FIELD OF DISCLOSURE
[0001] The disclosure relates to a liquid cartridge in combination with a printer including
an attachment section to which the liquid cartridge is removably attached.
BACKGROUND
[0002] There has been known a system including an ink cartridge and an inkjet recording
apparatus, for example, as disclosed in Japanese Patent Application Publication No.
2013-49164. The inkjet recording apparatus includes an attachment section to which the ink cartridge
is removably attached. The attachment section includes a coil spring, a lock member,
and an electrical contact. The ink cartridge includes an engagement portion and an
IC board. The ink cartridge is inserted into the attachment section against basing
force of the coil spring acting in a direction in which the ink cartridge is removed.
The engagement portion has an engagement surface configured to receive the basing
force. The engagement surface of the ink cartridge engages with the lock member of
the attachment section, thereby holding the ink cartridge in a fully attached position
in the attachment section against the biasing force.
[0003] The IC board of the ink cartridge has memory mounted thereon. The memory stores information
indicating, for example, ink color, ink materials, and an amount of ink stored in
the ink cartridge. The IC board has an electrode formed thereon. The electrode is
configured to electrically connect to the memory. When the ink cartridge is in the
fully attached position, the electrode electrically connects to the contact of the
attachment section, thereby allowing the inkjet recording apparatus to read out the
information stored in the memory. When the ink cartridge is in the fully attached
position, the electrode and the contact need to be positioned accurately to establish
reliable electrical contact therebetween.
SUMMARY
[0004] In the above-described system, the ink cartridge is held in the fully attached position
in the attachment section using the engagement portion, which is a separate member
from the electrode of the IC board. In this configuration, the position of the engagement
portion when the ink cartridge is in the fully position and the position of the electrode
on the IC board may affect the positioning of the electrode of the ink cartridge relative
to the contact of the attachment section.
[0005] In view of the foregoing, one or more aspects of the disclosure provide a liquid
cartridge that may position an electrode of the liquid cartridge with accuracy.
[0006] According to the present invention, there is provided a liquid cartridge which may
be provided in combination with a printer having an attachment section to which the
liquid cartridge is configured to be inserted in an insertion direction crossing a
gravitational direction. The liquid cartridge is configured to be removed in a removal
direction opposite to the insertion direction. The liquid cartridge is configured
to be inserted into an attachment section of the printer in the insertion direction
against an urging force acting in the removal direction. The liquid cartridge comprises
a chamber storing liquid, a liquid outflow path provided with an outlet facing frontward
in the insertion direction in a first posture of the liquid cartridge, the liquid
outflow path extending from the chamber to the outlet in the insertion direction,
a circuit board disposed rearward relative to the outlet in the insertion direction,
a first surface configured to contact with an electrical contact of the attachment
section , the first surface facing at least upwardly in the first posture, and a second
surface configured to contact with the electrical contact of the attachment section
, the second surface facing at least rearwardly in the first posture. The liquid cartridge
is configured to move between the first posture and a second posture in which the
second surface is spaced apart from the electrical contact of the attachment section
in the gravitational direction. The circuit board includes at least one of the first
surface and the second surface.
[0007] According to one or more aspects of the disclosure, the circuit board includes at
least one of the first surface and the second surface. When the liquid cartridge is
in the first posture, the first surface facing upward and the second surface facing
rearward both contact the electrical contact, thereby establishing electrical connection
between the circuit board and the electrical contact, and holding of the liquid cartridge
in the first posture in the attachment section against the urging or biasing force
acting in a rearward direction. This configuration may improve accuracy of positioning
of the circuit board relative to the electrical contact.
[0008] According to one or more aspects of the disclosure, the first surface facing upward
and the second surface facing rearward both contact the electrical contact, thereby
positioning the liquid cartridge in the gravitational direction and the insertion
direction. This configuration may achieve accurate positioning of the circuit board
relative to the electrical contact in the gravitational direction and the insertion
direction.
[0009] The circuit board may include the second surface.
[0010] According to one or more aspects of the disclosure, the circuit board may be positioned
relative to the electrical contact in the insertion direction with reference to the
second surface of the circuit board. This configuration may achieve accurate positioning
of the circuit board relative to the electrical contact in the insertion direction.
[0011] The circuit board may include the first surface.
[0012] According to one or more aspects of the disclosure, the circuit board may be positioned
relative to the electrical contact in the gravitational direction with reference to
the first surface of the circuit board. This configuration may achieve accurate positioning
of the circuit board relative to the electrical contact in the gravitational direction.
[0013] The first surface of the circuit board may move upward toward the electrical contact,
during the movement of the liquid cartridge from the second posture to the first posture.
[0014] The circuit board may include the first surface and the second surface.
[0015] According to one or more aspects of the disclosure, when the liquid cartridge is
in the first posture, the second surface may contact the electrical contact, thereby
positioning the circuit board relative to the attachment section in the insertion
direction, and the first surface may contact the electrical contact, thereby positioning
the circuit board relative to the attachment section in the gravitational direction.
[0016] The first surface may be disposed rearward relative to the second surface and connected
with the second surface.
[0017] According to one or more aspects of the disclosure, the electrical contact may contact
the circuit board at two locations, one of which is at the first surface and the other
one of which is at the second surface. This configuration may stabilize electrical
contact between the electrical contact and the circuit board. For example, if dust
is attached to one of the first surface and the second surface, the other one of the
first surface and the second surface may electrically connect to the electrical contact.
[0018] The second surface may be orthogonal to the insertion direction in the first posture.
[0019] According to one or more aspects of the disclosure, the second surface is orthogonal
to the removal direction of the liquid cartridge opposite to the insertion direction.
In other words, the second surface faces rearward directly. This configuration may
reduce such a possibility that the liquid cartridge held in position in the attachment
section comes out of the attachment section, as compared with the configuration of
a liquid cartridge having a second surface that is not orthogonal to the removal direction
in a state in which the liquid cartridge is in the first posture.
[0020] The first surface may be orthogonal to the gravitational direction in the first posture.
[0021] According to one or more aspects of the disclosure, the first surface is orthogonal
to the gravitational direction. In other words, the first surface faces upwardly directly.
This configuration may achieve high accuracy of positioning between the circuit board
and the attachment section in the gravitational direction, as compared with the configuration
of a liquid cartridge having a first surface that is not orthogonal to the gravitational
direction in a state in which the liquid cartridge is in the first posture.
[0022] The liquid cartridge may further comprise a sealing member disposed in the liquid
outflow path and configured to, when a liquid supply pipe of the attachment section
is disposed in the liquid outflow path through the outlet, seal the outlet by contacting
an outer peripheral surface of the liquid supply pipe.
[0023] The liquid cartridge may be configured to pivot between the first posture and the
second posture about a contact portion between the seal member and the liquid supply
tube.
[0024] According to one or more aspects of the disclosure, the liquid cartridge may pivot
between the first posture and the second posture with simple configuration.
[0025] The circuit board may have flexibility and each of the first surface and the second
surface may include an electrode.
[0026] The circuit board may include a first rigid board (61), a second rigid board (62),
and a flexible board (63) having an electrode (65) supported on the first rigid board
(61) and the second rigid board (62).
[0027] The first surface may be flat.
[0028] According to one or more aspects of the disclosure, the liquid cartridge in the first
posture contacts the electrical contact, and is positioned in the gravitational direction.
The flat first surface may provide the liquid cartridge with higher positioning accuracy
in the gravitational direction.
[0029] The liquid cartridge may further comprise a casing that includes: a front wall; a
rear wall spaced apart from the front wall in the removal direction opposite the insertion
direction; a top wall extending between the front wall and the rear wall and disposed
upward of the chamber; and a bottom wall spaced apart from the top wall and disposed
below the chamber. The chamber may be disposed between the front wall and the rear
wall; and the circuit board may be disposed on the top wall. The liquid outflow path
may be disposed closer to the bottom wall than to the top wall.
[0030] One of the first surface and the second surface may be disposed on the circuit board
and the other of the first surface and second surface is formed on the casing made
of resin.
[0031] The first surface may be inclined relative to the top wall in the first posture and
a front portion of the first surface may be disposed downward relative to a rear portion
of the first surface.
[0032] According to one or more aspects of the disclosure, the first surface is inclined
relative to the upper wall. If dust is attached to the first surface, the dusts may
fall down along the inclined surface. This may prevent poor contact between the electrical
contact and the first surface.
[0033] The first surface may be inclined such that a front portion thereof is disposed downward
relative to or below a rear portion thereof, and includes a component facing frontward.
In this configuration, the electrical contact may contact the first surface during
the attachment of the liquid cartridge to the attachment section, which may prevent
the liquid cartridge from moving further toward the front.
[0034] The second surface may be inclined relative to the top wall in the first posture
and a front portion of the second surface may be disposed upward relative to a rear
portion of the second surface.
[0035] According to one or more aspects of the disclosure, the second surface is inclined
relative to the upper wall. If dust is attached to the second surface, the dust may
fall down along the inclined surface. This may prevent poor contact between the electrical
contact and the second surface.
[0036] According to still another aspect, the present disclosure can also be embodied as
a liquid cartridge in combination with a printer (30) configured to be inserted into
an attachment section (110) of a printer (10) in an insertion direction crossing a
gravitational direction against an urging force acting in a removal direction opposite
to the insertion direction, wherein the liquid cartridge (30) comprises a chamber
(32,33) storing liquid, a liquid outflow path (35) provided with an outlet facing
frontward in the insertion direction in a first posture of the liquid cartridge, the
liquid outflow path extending from the chamber (32,33) to the outlet (71) in the insertion
direction, a circuit board (64) disposed rearward relative to the outlet (71) in the
insertion direction, the circuit board (64) disposed rearward of a rear end of the
liquid outflow path (35), and a contact surface (64E) facing at least rearward and
configured to contact with an electrical contact (106) of the attachment section (110)
in the first posture and the liquid cartridge (30) is configured to move between the
first posture and a second posture in which the contact surface (64E) is located below
the electrical contact (106) of the attachment section (110) and does not contact
the electrical contact (106) of the attachment section (110); and the circuit board
(34) includes the contact surface (64E).
[0037] According to one or more aspects of the disclosure, when the liquid cartridge is
in the first posture, the contact surface contacts the electrical contact, thereby
holding the liquid cartridge in position in the first posture.
[0038] According to one or more aspects of the disclosure, the circuit board includes the
contact surface. The contact surface contacts the electrical contact, thereby establishing
electrical connection between the circuit board and the electrical contact and holding
of the liquid cartridge in the first posture in the attachment section against the
urging or biasing force acting in a rearward direction. This configuration may improve
accuracy of positioning of the circuit board relative to the electrical contact.
[0039] According to one or more aspects of the disclosure, the liquid cartridge is configured
to move between the first posture and the second posture. When the liquid cartridge
is in the first posture, the contact surface is located higher than when the liquid
cartridge is in the second posture. In this configuration, the contact surface moves
upward toward the electrical contact as the liquid cartridge from the second posture
to the first posture. The liquid cartridge may be readily positioned in the insertion
direction by the contact between the contact surface and the electrical contact. Further,
the contact surface contacts the electrical contact, thereby establishing electrical
connection between the circuit board and the electrical contact, and holding of the
liquid cartridge in position. This configuration may achieve accurate positioning
of the circuit board relative to the electrical contact.
[0040] The present invention also provides use of the liquid cartridge with the printer
having the attachment section.
BRIEF DESCRIPTION OF THE DRAWINGS
[0041]
Fig. 1 is a vertical cross-sectional diagram conceptually illustrating an internal
configuration of a printer including a cartridge-attachment section configured to
removably receive an ink cartridge in an illustrative embodiment according to one
or more aspects of the disclosure.
Fig. 2 is a perspective view of the cartridge-attachment section.
Fig. 3 is a vertical cross-sectional view of the ink cartridge attached to the cartridge-attachment
section in a first posture.
Fig. 4 is a perspective front view of the ink cartridge in an upright orientation.
Fig. 5 is a perspective rear view of the ink cartridge in the upright orientation.
Fig. 6A is a left side view of the ink cartridge in the upright orientation.
Fig. 6B is a rear view of the ink cartridge in the upright orientation.
Fig. 7 is a cross-sectional view of the ink cartridge taken along the line VII-VII
of Fig. 6B.
Fig. 8 is a vertical cross-sectional view of the ink cartridge attached to the cartridge-attachment
section in a second posture.
Fig. 9 is a flowchart illustrating steps of a process, in an illustrative embodiment
according to one or more aspect of the disclosure, performed to determine whether
the ink cartridge is attached to the cartridge-attachment section.
Fig. 10 is a flowchart illustrating steps of a process, in an illustrative embodiment
according to one or more aspect of the disclosure, performed to determine whether
the ink cartridge is attached to the cartridge-attachment section.
Fig. 11 is a vertical cross-sectional view of an ink cartridge, in a first modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 12 is a vertical cross-sectional view of an ink cartridge, in a second modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 13 is a vertical cross-sectional view of an ink cartridge, in a second modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 14 is a vertical cross-sectional view of an ink cartridge, in a third modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 15 is a vertical cross-sectional view of an ink cartridge, in a fourth modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 16 is a vertical cross-sectional view of an ink cartridge, in a fourth modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 17 is a vertical cross-sectional view of an ink cartridge, in a modification
according to one or more aspects of the disclosure, attached to the cartridge-attachment
section in the first posture.
Fig. 18 is a perspective view of an ink cartridge in a modification according to one
or more aspects of the disclosure, the ink cartridge shown in the upright orientation.
Fig. 19 is a vertical cross-sectional view of the ink cartridge of Fig. 18 attached
to the cartridge-attachment section in the first posture.
DETAILED DESCRIPTION
[0042] Referring to the accompanying drawings, an illustrative embodiment of the disclosure
will now be described. The illustrative embodiment described below is merely an example,
and various changes, arrangements and modifications may be applied therein without
departing from the scope of the disclosure.
[Overview of Printer 10]
[0043] As depicted in Fig. 1, a printer 10 is configured to record an image based on an
inkjet recording method, by selectively ejecting ink droplets onto a sheet. The printer
10 includes a controller 1, a recording head 21, an ink-supplying device 100, and
ink tubes 20 connecting the recording head 21 to the ink-supplying device 100. The
ink-supplying device 100 includes a cartridge-attachment section 110 (an example of
an attachment section). The cartridge-attachment section 110 is configured to receive
ink cartridges 30 (an example of liquid cartridges). The cartridge-attachment section
110 has a surface having an opening 112. The ink cartridges 30 can be inserted into
and removed from the cartridge-attachment section 110 through the opening 112.
[0044] Each ink cartridge 30 stores ink (an example of liquid) for use in the printer 10.
As will be described in detail below, the ink cartridge 30 includes, as depicted in
Figs. 4-7, a casing 31, an ink supply portion 34, an IC board 64 (an example of a
circuit board) including four electrodes 65, and a light blocking plate 67. Each ink
cartridge 30 is connected to the recording head 21 through a respective one of the
ink tubes 20 when the ink cartridge 30 has been fully attached to the cartridge-attachment
section 110. The recording head 21 includes sub-tanks 28 each configured to temporarily
store ink supplied from a corresponding ink cartridge 30 through a corresponding ink
tube 20. The recording head 21 includes nozzles 29 through which ink supplied from
the sub-tanks 28 is selectively ejected, in accordance with the inkjet recording method.
In one example, the recording head 21 includes a head control board (not depicted),
and piezoelectric elements 29A. Each of the piezoelectric elements 29A corresponds
to a respective one of the nozzles 29. The head control board selectively applies
drive voltages to the piezoelectric elements 29A, to eject ink selectively from the
nozzles 29. In this way, the recording head 21 consumes ink stored in the ink cartridges
30 that have been attached to the cartridge-attachment section 110.
[0045] The printer 10 includes a sheet tray 15, a sheet feeding roller 23, a conveying path
24, a pair of conveying rollers 25, a platen 26, a pair of discharge rollers 27, and
a discharge tray 16. A sheet is fed from the sheet tray 15 by the sheet feeding roller
23 to the conveying path 24, and then conveyed by the conveying rollers 25 over the
platen 26. The recording head 21 ejects ink onto the sheet being conveyed over the
platen 26, thereby recording an image on the sheet. The sheet that has passed the
platen 26 is discharged by the discharge rollers 27 onto the discharge tray 16.
[Ink-Supply Device 100]
[0046] As depicted in Fig. 1, the ink-supplying device 100 is disposed in printer 10. The
ink-supplying device 100 includes the cartridge-attachment section 110 to which the
ink cartridges 30 are attached. Fig. 1 illustrates the ink cartridge 30 that has been
completely or fully attached to the cartridge-attachment section 110. The ink cartridge
30 is fully attached to the cartridge-attachment section 110 in a fully attached posture
(e.g., a first posture). In the disclosure, a direction in which the ink cartridge
30 is inserted into the cartridge-attachment section 110 (e.g., an insertion direction)
is defined as a frontward direction 51. In the illustrative embodiment, the insertion
direction is orthogonal to a gravitational direction. A direction in which the ink
cartridge 30 is removed from the cartridge-attachment section 110 (e.g., a removal
direction) is defined as a rearward direction 52. The rearward direction 52 is opposite
to the frontward direction 51. In the illustrative embodiment, the frontward direction
51 and the rearward direction 52 are orthogonal to the gravitational direction and
parallel to a horizontal plane containing horizontal directions orthogonal to the
gravitational direction. A direction coincident with the gravitational direction is
defined as a downward direction 53. A direction opposite to the downward direction
53 or the gravitational direction is defined as an upward direction 54. A direction
orthogonal to the frontward direction 51 and the downward direction 53 is defined
as a rightward direction 55 or a leftward direction 56. Further, the frontward direction
51 and the rearward direction 52 may be collectively referred to as a "front-rear
direction". The upward direction 54 and the downward direction 53 may be collectively
referred to as an "up-down direction". The rightward direction 55 and the leftward
direction 56 may be collectively referred to as a "right-left direction".
[Cartridge-Attachment Section 110]
[0047] As depicted in Fig. 1 through Fig. 3, the cartridge-attachment section 110 includes
a cartridge holder 101, and four needles 102 (an example of liquid supply pipes),
four tanks 103, four rods 125, four optical sensors 113, a shaft 145, four sets of
electrical contacts 106, a cover 114 and a cover sensor 118. The cartridge-attachment
section 110 is configured to receive four ink cartridges 30, each containing different
one of cyan, magenta, yellow, and black ink.
[Cartridge Holder 101]
[0048] As depicted in Fig. 2, the cartridge holder 101 has a box-like shape defining an
interior space therein. The cartridge holder 101 includes a top wall, a bottom wall,
an end wall, a right wall, and a left wall. The top wall defines the upper end of
the interior space. The bottom wall defines the lower end of the interior space. The
end wall defines the front end of the interior space and connects the top wall and
the bottom wall. Each of the right wall and the left wall defines a respective one
of right and left side ends of the interior space and connects the top wall and the
bottom wall. The cartridge holder 101 has the opening 112 opposite to the end wall
of the cartridge holder 101 in the front-rear direction.
[0049] The interior space is divided by three plates 104 into four individual spaces 111,
each elongated in the up-down direction. The ink cartridge 30 can be inserted into
and removed from the individual space 111 of the cartridge holder 101 through the
opening 112. The cartridge holder 101 has guide grooves 109 formed at the bottom wall.
During insertion, a lower end portion of the ink cartridge 30 is guided by a corresponding
one of the guide grooves 109 along the front-rear direction. Each of the four ink
needles 102, the four optical sensors 113, the four rods 125, and the four sets of
the electrical contacts 106 is disposed in the interior space of the cartridge holder
101 in correspondence with a respective one of the individual spaces 111 configured
to receive the ink cartridges 30.
[Cover 114]
[0050] The cover 114 is configured to open and close the opening 112 of the cartridge holder
101. The cover 114 is pivotally attached to the cartridge holder 101 about a shaft
(not depicted) disposed near a lower end of the cartridge holder 101. The shaft extends
in the right-left direction. The cover 114 is configured to pivotally move between
a closed position, as depicted in Fig. 1, in which the opening 112 is closed, and
an open position in which the opening 112 is open. When the cover 114 pivots from
the closed position toward the open position, an upper end of the cover 114 pivotally
moves rearward. When the cover 114 is in the open position, a user is allowed to attach
or remove the ink cartridge 30 to or from the cartridge holder 101 through the opening
112. When the cover 114 is in the closed position, the user is not allowed to attach
or remove the ink cartridge 30 to or from the cartridge holder 101.
[Needles 102]
[0051] As depicted in Figs. 2 and 3, each of the needles 102 is formed of a resin into a
hollow tubular shape. The needle 102 is disposed at a lower portion of the end wall
of the cartridge holder 101, e.g., at a position corresponding to the ink supply portion
34 of the ink cartridge 30 when attached to the cartridge-attachment section 110.
The needle 102 protrudes in the removal direction relative to the end wall of the
cartridge holder 101.
[0052] The needle 102 has a distal end, a base end, and an interior space 102A. Each of
the distal end and the base end of the needle 102 has an opening. The distal end of
the needle 102 is coupled directly or indirectly to the corresponding ink tube 20
(refer to Fig. 1). The interior space 102A of the needle 102 communicates with the
recording head 21 and a corresponding one of the tanks 103, through the interior space
of a corresponding ink tube 20.
[0053] As depicted in Figs. 2 and 3, the needle 102 is surrounded by a cylindrical guide
portion 105 that protrudes in the removal direction relative to the end wall of the
cartridge holder 101. The needle 102 is located at a diametrical center of the guide
portion 105.
[0054] The needle 102 may have a flat distal end, or a pointed or sharp distal end. The
guide portion 105 may be formed into any shape, provided that the guide portion 105
can allow the insertion of the ink cartridge 30 in the insertion direction. The guide
portion 105 may not necessarily be disposed at the cartridge-attachment section 110.
[Electrical Contacts 106]
[0055] As depicted in Fig. 3, the four sets of electrical contacts 106 are disposed at the
top wall of the cartridge holder 101. Each set has four electrical contacts 106 and
is disposed at a respective one of the individual spaces 111 (refer to Fig. 2).
[0056] Each electrical contact 106 is located to the rear of the needle 102. The electrical
contact 106 protrudes downward from the top wall of the cartridge holder 101 toward
the interior space 111. The electrical contact 106 is formed of a plate-like material
having electrical conductivity and elasticity, and can be upwardly elastically deformable.
Although not illustrated in detail in the drawings, the four electrical contacts 106
in each individual space 111 are arranged in the right-left direction with a space
therebetween.
[0057] Each electrical contact 106 is electrically connected to the controller 1 (refer
to Fig. 1) of the printer 10. The controller 1 includes, for example, a CPU, a ROM,
and a RAM. When the electrical contacts 106 contact the corresponding electrodes 65
and establish electrically connection with the electrodes 65, a voltage Vc may be
applied to the electrodes 65; the electrodes 65 may be grounded; or power may be supplied
to the electrodes 65. Establishment of electrical connection between the electrical
contacts 106 and the corresponding electrodes 65 may allow the controller 1 to read
data stored in memory of an IC of the ink cartridge 30 and to write data into the
memory of the IC.
[Rods 125]
[0058] As depicted in Fig. 3, the rods 125 (one of which is shown in Fig. 3) are disposed
at the end wall of the cartridge holder 101 above the needles 102. Each rod 125 protrudes
rearward from the end wall of the cartridge holder 101. The rod 125 has a cylindrical
shape. The interaction between the ink cartridge 30 and the rod 125 will be described
below.
[Optical Sensors 113]
[0059] As depicted in Fig. 3, the optical sensors 113 (one of which is shown in Fig. 3)
are disposed at the top wall of the cartridge holder 101 to the rear of the rods 125
but to the front of the electrical contacts 106. Each optical sensor 113 includes
a light-emitting element and a light-receiving element. The light-emitting element
and the light-receiving element are spaced from each other in the right-left direction.
When the ink cartridge 30 is fully attached to the cartridge-attachment section 110,
the light blocking plate 67 (refer to Fig. 4) of the ink cartridge 30 is located between
the light-emitting element and the light-receiving element. In other words, the light-emitting
element and the light-receiving element oppose each other while sandwiching therebetween
the light blocking plate 67 of the ink cartridge 30 that is in the fully attached
posture.
[0060] The optical sensor 113 is configured to output, to the controller 1, signals based
on whether the light emitted from the light-emitting element in the right-left direction
is received by the light-receiving element. For example, the optical sensor 113 outputs
a low level signal to the controller 1 when the light emitted from the light-emitting
element is not received by the light-receiving element (e.g., when the intensity of
the light received by the light-receiving element is less than a predetermined intensity).
On the other hand, the optical sensor 113 outputs a high level signal to the controller
1 when the light emitted from the light-emitting element is received by the light-receiving
element (e.g., when the intensity of the light received by the light-receiving element
is equal to or greater than the predetermined intensity).
[Cover Sensor 118]
[0061] The cover sensor 118 is disposed at an upper portion of the cartridge holder 101.
The cover sensor 118 is configured to detect whether the cover 114 contacts the cover
sensor 118. When the cover 114 is in a closed position, an upper portion of the cover
114 contacts the cover sensor 118, so that the cover sensor 118 may output a first
signal to the controller 1. When the cover 114 is not in the closed position or the
open position, the cover 114 is in a position away from the sensor cover 118, so that
the sensor cover 118 may output a second signal that is different from the first signal,
to the controller 1.
[Shaft 145]
[0062] As depicted in Fig. 3, the shaft 145 is disposed at a portion of the cartridge holder
101 near its top wall and near the opening 112. The shaft 145 extends in the right-left
direction of the cartridge holder 101 across the four individual spaces 111. The shaft
145 is located to the rear of the electrical contacts 106. For example, the shaft
145 is formed of metal into a cylindrical shape. Each left and right end of the shaft
145 is fixed to a respective one of the left and right walls of the cartridge holder
101, so that the shaft 145 may not move or rotate relative to the cartridge holder
101.
[Tanks 103]
[0063] As depicted in Fig. 1, the tanks 103 (one of which is depicted in Fig. 1) are disposed
to the front of the cartridge holder 101. Each tank 103 has a box shape, and is configured
to store ink therein. The tank 103 has a port 124 at an upper portion thereof. The
port 124 may allow an interior space of the tank 103 to communication with the atmosphere.
The interior space of the tank 103 communicates with the interior space 102A of the
needle 102, so that ink flowing out of the ink cartridge 30 may be stored in the tank
103 via the needle 102. The ink stored in the interior space of the tank 103 is supplied
to the recording head 21 through the ink tube 20 connected to the tank 103.
[Ink Cartridges 30]
[0064] As depicted in Figs. 4-6, the ink cartridge 30 is a container storing ink therein.
The ink cartridge 30 is shown in an upright orientation in Figs. 4-6. The upright
orientation is defined as an orientation of the ink cartridge 30 in which the ink
cartridge 30 is insertable to the cartridge-attachment section 110 in a direction
crossing to the gravitational direction. The upright orientation corresponds to the
first posture or the fully attached posture of the ink cartridge 30 as depicted in
Fig. 1. In the following description, "top/upper", "bottom/lower", "front", "rear",
"right", and "left" may be used to define the various parts or components of the ink
cartridge 30, in conjunction with the upright orientation of the ink cartridge 30.
When the ink cartridge 30 is in the upright orientation, the downward direction corresponds
to the gravitational direction; the upward direction is opposite to the gravitational
direction; the right-left direction corresponds to a width direction of the ink cartridge
30; the up-down direction corresponds to a height direction of the ink cartridge 30;
and the front-rear direction corresponds to a depth direction of the ink cartridge
30. In the illustrative embodiment, the front-rear direction corresponds to the insertion
direction or the removal direction in which the ink cartridge 30 is inserted into
or removed from the cartridge-attachment section 110.
[0065] The ink cartridge 30 includes the casing 31 having a substantially rectangular parallelepiped
shape. In the illustrative embodiment, the casing 31 includes a lower case 31L and
an upper cover 31U. The lower case 31L includes a first chamber 32 and a second chamber
33 (refer to Fig. 7), each storing ink therein. The upper cover 31U is located above
the lower case 31L and engages with the lower case 31L. The upper cover 31U includes
an air valve chamber 36.
[0066] The casing 31 has a generally flat box shape having a width in the right-left direction,
a height in the up-down direction, and a depth in the front-rear direction, in which
the width is less than each of the height and the depth.
[0067] The casing 31 includes a front wall 40, a rear wall 41, a top wall 39, a bottom wall
42, and side walls 37 and 38. Each of the front wall 40 and the rear wall 41 extends
in the width direction and the height direction. Each of the top wall 39 and the bottom
wall 42 extends in the width direction and the depth direction. Each of the side walls
37 and 38 extends in the depth direction and the height direction.
[0068] In the illustrative embodiment, a direction from the rear wall 41 toward the front
wall 40 corresponds to the frontward direction 51; a direction from the front wall
40 toward the rear wall 41 corresponds to the rearward direction 52; a direction from
the top wall 39 toward the bottom wall 42 corresponds to the downward direction 53;
a direction from the bottom wall 42 toward the top wall 39 corresponds to the upward
direction 54; a direction from the side wall 38 toward the side wall 37 corresponds
to the rightward direction 55; and a direction from the side wall 37 toward the side
wall 38 corresponds to the leftward direction 56. Each of the front wall 40, the rear
wall 41, the bottom wall 42, the top wall 39, the side walls 37 and 38 has a surface
that partially defines outer surfaces of the casing 31. The outer surfaces of the
casing 31 may be defined by a front surface of the front wall 40; a rear surface of
the rear wall 41; a lower surface of the bottom wall 42; an upper surface of the top
wall 39; a right surface of the side wall 37; and a left surface of the side wall
38. The front surface of the front wall 40 faces frontward; the rear surface of the
rear wall 41 faces rearward; the lower surface of the bottom wall 42 faces downward;
the upper surface of the top wall 39 faces upward; the right surface of the side wall
37 faces rightward; and the left surface of the side wall 38 faces leftward.
[0069] As depicted in Fig. 7, the front wall 40 is spaced from the rear wall 41 in the front-rear
direction across the first chamber 32 and the air valve chamber 36. The top wall 39
is spaced from the bottom wall 42 in the up-down direction across the first chamber
32, the second chamber 33, and the air valve chamber 36. The side walls 37 and 38
are spaced from each other in the right-left direction with the first chamber 32,
the second chamber 33, and the air valve chamber 36 interposed therebetween.
[0070] Each of the top wall 39 and the bottom wall 42 extends in the front-rear direction
between the front wall 40 and the rear wall 41. Each of the side walls 37 and 38 extends
in the front-rear direction between the front wall 40 and the rear wall 41, and in
the up-down direction between the top wall 39 and the bottom wall 42.
[0071] Each of the front wall 40, the rear wall 41, the top wall 39, the bottom wall 42,
and the side walls 37 and 38 defines a portion of at least one of the first chamber
32, the second chamber 33, and the air valve chamber 36.
[0072] At least a portion of the casing 31, e.g., the rear wall 41 of the lower case 31L,
is translucent or transparent, so that a liquid surface of ink stored in the first
chamber 32 and the second chamber 33 may be seen from the outside of the casing 31.
[0073] In the illustrative embodiment, the lower case 31L and the upper cover 31U constitute
the casing 31. In another embodiment, a single member may constitute a casing 31.
In yet another embodiment, telescoping inner and outer cases may constitute a casing
31. The inner case may define a chamber therein. The outer case may define an outer
wall of the casing and may receive the inner case.
[0074] As depicted in Figs. 5 and 6, the rear surface of the rear wall 41 includes an upper
portion 41U and a lower portion 41L. The upper portion 41U is located above the lower
portion 41L. The lower portion 41L is located closer to the front surface of the casing
31 than the upper portion 41U. Each of the upper portion 41U and the lower portion
41L is flat. The upper portion 41U and the lower portion 41L intersect with each other,
forming an angle therebetween, which is not a right angle. The lower portion 41L is
inclined relative to the up-down direction such that the lower portion 41L extends
closer to the front wall 40 as it extends closer to the bottom wall 42.
[0075] The lower surface of the bottom wall 42 is angled relative to the front-rear direction
such that a front end of the bottom wall 42 is located lower than its rear end. The
lower surface of the bottom wall 42 may be angled at, for example, 2-4 degrees, relative
to the horizontal direction. The rear end of the bottom wall 42 is connected to the
lower end of the lower portion 41L of the rear wall 41.
[0076] The casing 31 further includes a lower sub-wall 48 and a front sub-wall 49. The lower
sub-wall 48 is located above the bottom wall 42. The lower sub-wall 48 extends rearward
continuously from the lower end of the front wall 40. The lower sub-wall 48 has a
front end located to the front of a front end of the ink supply portion 34, and a
rear end located to the rear of the front end of the ink supply portion 34. The front
sub-wall 49 connects to the lower sub-wall 48 and the bottom wall 42. The ink supply
portion 34 is located below the lower sub-wall 48 but above the bottom wall 42, and
extends frontward through the front sub-wall 49. The front end of the lower sub-wall
48 may be located at any position, e.g., to the rear of the front end of the ink supply
portion 34.
[0077] Each of the front wall, the rear wall, the top wall, the bottom wall, and the side
walls of the ink cartridge 30 need not be configured as one wall. For example, in
the illustrative embodiment, the front sub-wall 49 and a front sub-wall 95 (to be
described below) constitute a front wall of the ink cartridge 30, together with the
front wall 40, and the lower sub-wall 48 constitutes a lower wall of the ink cartridge
30, together with the bottom wall 42. Upper sub-walls 91A and 91B (to be described
in detail below with reference to Fig. 6) constitute an upper wall of the ink cartridge
30, together with the top wall 39.
[0078] In the ink cartridge 30, the front surface of the front wall 40, the rear surface
of the rear wall 41, the upper surface of the top wall 39, the lower surface of the
bottom wall 42, the right surface of the side wall 37, and the left surface of the
side wall 38, each need not be configured as one flat surface.
[0079] The front surface of the front wall 40 can be any surface(s) that can be seen when
the ink cartridge 30 in the upright orientation is viewed from its front side, and
is/are positioned to the front of a center of the ink cartridge 30 in the front-rear
direction. In the illustrative embodiment, a front surface of the front sub-wall 49,
which connects the bottom wall 42 and the lower sub-wall 48, and the front surface
of the front wall 40, which connects the lower sub-wall 48 and the top wall 39, constitute
a front surface of a front wall of the ink cartridge 30. The ink cartridge 30 may
not necessarily include the lower sub-wall 48. In other words, the front surface of
the front wall 40 of the ink cartridge 30 may be one continuous or flat surface that
connects the top wall 39 and the bottom wall 42.
[0080] The rear surface of the rear wall 41 can be any surface(s) that can be seen when
the ink cartridge 30 in the upright orientation is viewed from its rear side, and
is/are positioned to the rear of the center of the ink cartridge 30 in the front-rear
direction.
[0081] The top surface of the top wall 39 can be any surface(s) that can be seen when the
ink cartridge 30 in the upright orientation is viewed from above, and is/are positioned
above a center of the ink cartridge 30 in the up-down direction.
[0082] The bottom surface of the bottom wall 42 can be any surface(s) that can be seen when
the ink cartridge 30 in the upright orientation is viewed from below, and is/are positioned
below the center of the ink cartridge 3 in the up-down direction.
[0083] The right surface of the side wall 37 can be any surface(s) that can be seen when
the ink cartridge 30 in the upright orientation is viewed from its right side, and
is/are positioned to the right of a center of the ink cartridge 30 in the right-left
direction.
[0084] The left surface of the side wall 38 can be any surface(s) that can be seen when
the ink cartridge 30 in the upright orientation is viewed from its left side, and
is/are positioned to the left of the center of the ink cartridge 30 in the right-left
direction.
[Protruding Portion 43 and Operation Portion 90]
[0085] As depicted in Figs. 4-6, the ink cartridge 30 further includes a protruding portion
43 and an operation portion 90 that are disposed at the top wall 39 of the casing
31. The operation portion 90 is located behind the protruding portion 43.
[0086] The protruding portion 43 extends along the front-rear direction. The protruding
portion 43 includes a horizontal surface 154 and a sloping surface 155. The horizontal
surface 154 extends along the right-left direction and the front-rear direction. The
sloping surface 155 is disposed in front of the horizontal surface 154 contiguous
with the horizontal surface 154. The sloping surface 155 faces upward and frontward.
The sloping surface 155 is angled at, for example, 15-25 degrees, relative to the
horizontal direction. The sloping surface 155 is located to the rear of the IC board
64 (to be described in detail below).
[0087] The casing 31 includes a front upper sub-wall 91B and a rear upper sub-wall 91A.
The front upper sub-wall 91B is disposed to the front of the top wall 39 and below
a central portion of the top wall 39 in the front-rear direction. The rear upper sub-wall
91A is disposed to the rear of the top wall 39 and below the central portion of the
top wall 39 in the front-rear direction. The rear upper sub-wall 91A is located below
the operation portion 90 with a space therebetween. A portion of the operation portion
90 protrudes upward from the top wall 39 to substantially the same height as the protruding
portion 43. Another portion of the operation portion 90 (which serves as an operation
surface 92) extends rearward and downward, and is shaped like a flat plate. Disposed
between the operation portion 90 and the rear upper sub-wall 91A is a rib 94 that
is continuous with the operation portion 90 and the rear upper sub-wall 91A. The rib
94 extends rearward. The rib 94 has a dimension in the right-left direction smaller
than a dimension of each of the operation portion 90 and the rear upper sub-wall 91A
in the right-left direction.
[0088] The operation portion 90 includes the operation surface 92 facing upward and rearward.
The operation surface 92 overlaps with the rear upper sub-wall 91A when the ink cartridge
30 is viewed from above. In other words, an imaginary plane extending in the up-down
direction and the right-left direction includes the operation surface 92 and the rear
upper sub-wall 91A.
[0089] The operation surface 92 includes a plurality of ridges 93 spaced from one another
in the front-rear direction. The ridges 93 help a user to visually recognize the operation
surface 92. The ridges 93 may provide the operation surface 92 to a non-slip gripping
surface when the user operates or touches the operation surface 92 with his/her finger.
[0090] The operation surface 92 can be seen when the ink cartridge 30 is viewed from above
and from the rear. The operation surface 92 may be operated by a user to remove, from
the cartridge-attachment section 110, the ink cartridge 30 in the first posture. The
operation portion 90 is fixed to the casing 31, for example, by being integrally molded
with the casing 31, so that operation portion 90 may not move or pivot relative to
the casing 31. Accordingly, a force applied by the user to the operation surface 92
may be transmitted directly to the casing 31 without changing its direction.
[Protruding Portion 83]
[0091] As depicted in Figs. 4-6, the ink cartridge 30 further includes a protruding portion
83 disposed at the upper surface of the top wall 39 of the casing 31 in front of the
protruding portion 43. The protruding portion 83 extends along the front-rear direction.
In the illustrative embodiment, the protruding portion 83 is contiguous with the protruding
portion 43. In another embodiment, the protruding portion 83 may be spaced apart from
the protruding portion 43 in the front-rear direction.
[0092] As depicted in Figs. 4-6, the protruding portion 83 includes a recessed portion 82
recessed downward. The recessed portion 82 is defined by a front end surface 82A,
a rear end surface 82B, and a bottom surface 82C. The front end surface 82A is orthogonal
to the front-rear direction and faces rearward. The front end surface 82A defines
a front end of the recessed portion 82. The rear end surface 82B is orthogonal to
the front-rear direction and faces frontward. The rear end surface 82B defines a rear
end of the recessed portion 82. The bottom surface 82C is orthogonal to the up-down
direction and faces upward. The bottom surface 82C defines a bottom end of the recessed
portion 82. A front end of the bottom surface 82C connects to a lower end of the front
end surface 82A and a rear end of the bottom surface 82C connects to a lower end of
the rear end surface 82B.
[Light Blocking Plate 67]
[0093] As depicted in Figs. 4-6, the light blocking plate 67 is disposed at the upper surface
of the top wall 39. The light blocking plate 67 protrudes upward and extends in the
front-rear direction. The light blocking plate 67 is located to the front of the protruding
portion 83. The light blocking plate 67 is located to the front of and below the IC
board 64. In the illustrative embodiment, the light blocking plate 67 is a resin-made
or plastic plate including, for example, light-absorbing coloring material (e.g.,
black pigment). In another embodiment, the light blocking plate 67 may be configured
by attaching a material that does not transmit light, such as aluminum foil, to a
side surface of a plate that can transmit light
[0094] The light blocking plate 67 of the ink cartridge 30 in the first posture is configured
to block the light output from the optical sensor 113 (e.g., from the light-emitting
element toward the light-receiving element) and traveling in the right-left direction.
For example, when the light emitted from the light-emitting element of the optical
sensor 113 is incident on the light blocking plate 67 before arriving at the light-receiving
element, the intensity of the light received at the light-receiving element is less
than a predetermined intensity, and may be, for example, zero (0). The light blocking
plate 67 may block or attenuate the light emitted from the light-emitting element
toward the light-receiving element. The light blocking plate 67 may alter a traveling
direction of light.
[Air Communication Opening 96]
[0095] As depicted in Fig. 4, the front sub-wall 95 has an air communication port 96 formed
therein. The front sub-wall 95 extends upward from a rear end of the front upper sub-wall
91B, and includes a surface facing frontward. The air communication port 96 is located
above the center of the casing 31 in the up-down direction. The air communication
port 96 has a generally circular shape. The air communication port 96 has an inside
diameter that is greater than an outside diameter of the rod 125 (refer to Fig. 3)
of the cartridge-attachment section 110.
[IC Board 64]
[0096] As depicted in Figs. 4-6, the ink cartridge 30 includes the IC board 64 (an example
of a circuit board). The IC board 64 is disposed closer to the top wall 39 than the
bottom wall 42 of the ink cartridge 30 in the upright orientation. In the illustrative
embodiment, the IC board 64 is located in the recessed portion 82 of the protruding
portion 83. As depicted in Fig. 7, the IC board 64 is located to the rear of an ink
supply port 71 (an example of an outlet, described below), an ink valve chamber 35
(described below), and the light blocking plate 67. In other words, the IC board 64
is located closer to the rear wall 41 in the front-rear direction, than the ink supply
port 71, the ink valve chamber 35, and the light blocking plate 67.
[0097] The IC board 64 includes a flexible substrate, an IC, and a plurality of electrodes
65. In one example, the IC board 64 includes a flexible substrate of an insulating
material, such as a thin plastic film, on which the IC and the electrodes 65 are mounted.
The IC is connected to the electrodes 65.
[0098] The IC board 64 is positioned in the recessed portion 82 on the front end surface
82A and the bottom surface 82C of the recessed portion 82. The IC board 64 is attached,
for example, by photo-curable resin, to the front end surface 82A and the bottom surface
82C while bending at a boundary between the front end surface 82A and the bottom surface
82C. In another embodiment, the IC board 64 may be attached by an adhesive other than
photo-curable resin, or by other methods, such as by using fastening members.
[0099] The IC board 64 attached to the front end surface 82A and the bottom surface 82C
includes a first surface 64A and a second surface 64B that are defined by an outer
surface of the substrate of the IC board 64 and outer surfaces of the electrodes 65.
The first surface 64A faces a direction opposite a direction that a surface of the
IC board 64 attached to the bottom surface 82C faces. The first surface 64A is parallel
to the bottom surface 82C and faces upward. The second surface 64B faces a direction
opposite a direction that a surface of the IC board 64 attached to the front end surface
82A faces. The second surface 64B is parallel to the front end surface 82A and faces
rearward. The first surface 64A is continuous with the second surface 64B and located
to the rear of the second surface 64B.
[0100] Each of the electrodes 65 is electrically connected to the IC. Each of the electrodes
65 is exposed to an exterior of the ink cartridge 30 on the first surface 64A and
the second surface 64B. The electrodes 65 are spaced apart from each other in the
right-left direction. The electrodes 65 extend over the first surface 64A and the
second surface 64B. A portion of each electrode 65 located in the first surface 64A
extends along the front-rear direction, while another portion of the electrode 65
located in the second surface 64B extends along the up-down direction.
[0101] As depicted in Fig. 3, when the ink cartridge 30 is in the first posture in the cartridge-attachment
section 110, the electrodes 65 of the IC board 64 are electrically connected to the
corresponding electrical contacts 106. In one example, a portion of each electrode
65 formed in the first surface 64A contacts a corresponding electrical contact 106
from below, and another portion of the electrode 65 formed in the first surface 64B
contacts the electrical contact 106 from the front.
[Internal Configuration of Casing 31]
[0102] As depicted in Fig. 7, the casing 31 has the first chamber 32, the second chamber
33, the ink valve chamber 35, and the air valve chamber 36 that are formed therein.
The first chamber 32, the second chamber 33, and the air valve chamber 36 are, each,
an example of an liquid chamber. The ink valve chamber 35 is an example of a liquid
outflow path. The first chamber 32, the second chamber 33, the ink valve chamber 35,
and the air valve chamber 36 can hold ink therein. The first chamber 32 and the air
valve chamber 36 are partitioned by a partition wall 44. The first chamber 32 and
the second chamber 33 are partitioned by a lower wall 45. Each of the partition wall
44 and the lower wall 45 extends in the front-rear direction and the right-left direction.
The partition wall 44 and the lower wall 45 oppose to each other in the up-down direction.
[0103] The first chamber 32 is enclosed by a lower surface of the partition wall 44, an
upper surface of the lower wall 45, an inner surface (e.g., a rear surface) of the
front wall 40, an inner surface (e.g., a front surface) of the rear wall 41, and an
inner surface (e.g., a left surface) of the side wall 37 and an inner surface (e.g.,
a right surface) of the side wall 38. The lower surface of the partition wall 44 and
the upper surface of the lower wall 45 define upper and lower edges of the first chamber
32, respectively. The inner surfaces of the front wall 40, the rear wall 41, and the
side walls 37 and 38 define front, rear, and side edges of the first chamber 32, respectively.
The partition wall 44 has a through-hole 46 formed therein. The first chamber 32 and
the air valve chamber 36 communicate with each other via the through-hole 46. The
valve chamber (35) extending from the second chamber (33) to the outlet (71) in the
insertion direction
[0104] The second chamber 33 is located below the first chamber 32. The second chamber 33
has a smaller volumetric capacity than the first chamber 32.
[0105] The second ink chamber 33 and the ink valve chamber 35 are partitioned by a partitioning
wall 50. The second chamber 33 is enclosed by a lower surface of the lower wall 45,
an upper surface of the bottom wall 42, a rear surface of the partition wall 50, the
inner surface of the rear wall 41, the inner surface of the side wall 37, and the
inner surface of the side wall 38. The lower surface of the lower wall 45 and the
upper surface of the bottom wall 42 define upper and lower edges of the second chamber
33, respectively. The rear surface of the partition wall 50, the inner surface of
the rear wall 41, and the inner surfaces of the side walls 37 and 38 define front,
rear, and side edges of the second chamber 33, respectively. The second chamber 33
communicates with the first chamber 32, via a communication port (not depicted) formed
in the lower wall 45. The partition wall 50 has a through-hole 99 (an example of a
rear end of the liquid outflow path) formed therein. The second chamber 33 communicates
with the ink valve chamber 35 via the through-hole 99.
[0106] Within the air valve chamber 36, a valve 97 and a coil spring 98 are disposed. The
air valve chamber 36 can communicate with an exterior of the ink cartridge 30, via
the air communication port 96 formed in the front sub-wall 95. The valve 97 is configured
to move between a closed position and an open position. At the closed position, the
value 97 closes the air communication port 96. At the open position, the value 97
is located away from the air communication port 96. The coil spring 98 is expandable
and contractible in the front-rear direction, and is configured to bias the valve
97 frontward toward the air communication port 96. A member for sealing the air communication
port 96 is not limited to the valve 97, but may include, for example, a removable
label. The label may be removably affixed to the front sub-wall 95 to seal the air
communication port 96.
[0107] The ink supply portion 34 is disposed at the front sub-wall 49. The ink supply portion
34 has a cylindrical outer shape. The ink supply portion 34 includes a tubular portion
75 having an open front end, and a packing 76 (an example of a sealing member) having
the ink supply port 71. The tubular portion 75 protrudes frontward relative to the
front sub-wall 49. The tubular portion 75 defines an interior space therein that serves
as the ink valve chamber 35. The ink valve chamber 35 is a space extending along the
front-rear direction when the ink cartridge 30 is in the upright orientation. The
ink valve chamber 35 communicates with the second chamber 33, via the through-hole
99 located behind the ink valve chamber 35. The ink valve chamber (35) is disposed
closer to the bottom wall (42) than to the top wall (41). The front end of the tubular
portion 75 is open to an exterior of the ink cartridge 30. In other words, the ink
valve chamber 35 brings the second chamber 33 into communication with the exterior
of the ink cartridge 30. The ink valve chamber 35 extends frontward, allowing ink
in the second chamber 33 to flow in the frontward direction 51 toward the exterior
of the ink cartridge 30. The packing 76 is disposed at a front end portion of the
tubular portion 75 or the ink valve chamber 35. The packing 76 will be described in
more detail below.
[0108] Within the ink valve chamber 35, a valve 77 and a coil spring 78 are disposed. The
valve 77 is configured to move along the front-rear direction to open and close the
ink supply port 71 (an example of an outlet) formed through a central portion of the
packing 76. The coil spring 78 is configured to bias the valve 77 frontward. The valve
77 closes the ink supply port 71 of the packing 76 when external forces are not applied
to the valve 77.
[0109] The packing 76 is a disk-shaped member having a through-hole formed at a central
portion thereof. The packing 76 is formed of elastic material, such as rubber or elastomer.
The through-hole extending through the central portion of the packing 76 in the front-rear
direction has a tubular-shaped inner peripheral surface that defines the ink supply
port 71. In other words, the packing 76 is disposed around a peripheral edge of the
ink supply port 71. The ink supply port 71 has an inside diameter, that is slightly
smaller than an outside diameter of the needle 102. The ink supply port 71 allows
the interior space of the tubular portion 75 (the ink valve chamber 35) to communicate
with the exterior of the ink cartridge 30 therethrough. In other words, the ink valve
chamber 35 brings the second chamber 33 into communication with the exterior of the
ink cartridge 30, through the ink supply port 71 that opens to the front.
[0110] The ink supply port 71 may be closed by a film, instead of the valve 77. In this
configuration, the ink supply port 71 may be provided at a front end of the tubular
portion 75, not at the packing 76. Alternatively, the ink supply port 71 may be formed
by piercing the needle 102 into a sealing member which is made of an elastic resin,
and may be closed by an elasticity of the sealing member as the needle 102 is removed
from the sealing member. The ink supply portion 34 need not be provided as a cylindrical
member. For example, the front wall 40 of the casing 31 may have a through-hole extending
therethrough in the front-rear direction. The front wall 40 having the through-hole
may partially define an ink supply portion 34.
[Attachment and Removal of Ink Cartridge 30 to/from Cartridge-Attachment Section 110]
[0111] Attachment of the ink cartridge 30 to the cartridge-attachment section 110 will now
be described.
[0112] In the ink cartridge 30 prior to attachment to the cartridge-attachment section 110,
the valve 77 closes the ink supply port 71 of the packing 76, as depicted in Fig.
7, preventing flow of ink to the exterior of the ink cartridge 30 through the ink
valve chamber 35. Further, the valve 97 closes the air communication port 96, preventing
the first chamber 32 from communicating with the atmosphere.
[0113] The ink cartridge 30 is inserted in the upright orientation into the cartridge holder
101 through the opening 112 (refer to Fig. 2) of the cartridge-attachment section
110. The upper portion 41U of the rear wall 41 of the casing 31 is located to the
rear of the lower portion 41L. In other words, the upper portion 41U is located closer
to a user than the lower portion 41L. The user may push the upper portion 41U frontward
to insert the ink cartridge 30 into the cartridge holder 101 of the cartridge-attachment
section 110. A lower portion of the ink cartridge 30 may enter the guide groove 109
(refer to Fig. 2) located at a lower portion of the cartridge holder 101.
[0114] As the ink cartridge 30 is being inserted into the cartridge holder 101, the ink
supply portion 34 moves relative to the cartridge holder 101 into a space defined
by the cylindrical guide portion 105 in the individual space 111. When the ink supply
portion 34 is located in the space defined by the guide portion 105, the rod 125 is
located in the air communication port 96, and the light blocking plate 67 (refer to
Fig. 7) is located between the light-emitting element and the light-receiving element
of the optical sensor 113.
[0115] As the ink cartridge 30 is further being inserted into the cartridge holder 101 to
a position near its end wall, as depicted in Fig. 8, the needle 102 enters the ink
valve chamber 35 through the ink supply port 71, moving the valve 77 rearward away
from the packing 76 against the biasing force of the coil spring 78. As a result,
the needle 102 is coupled to the ink supply portion 34, and the interior space 102A
of the needle 102 is brought into communication with the ink valve chamber 35 in the
ink supply portion 34. The ink stored in the ink valve chamber 35 may flow into the
interior space 102A. When the needle 102 is located in the ink valve chamber 35, an
inner peripheral surface of the packing 76 defining the ink supply port 71 contacts
an outer peripheral surface of the needle 102. In one example, the inner peripheral
surface of the packing 76 fluid-tightly contacts the outer peripheral surface of the
needle 102 in a circumferential direction of the packing 76. As the ink cartridge
30 moves in the insertion direction, the rod 125, which has entered the air communication
port 96 and contacts the valve 97, moves the valve 97 rearward away from the air communication
port 96 against the biasing force of the coil spring 98. As a result, the first chamber
32 is brought into communication with the atmosphere, via the through-hole 46, the
air valve chamber 36, and the air communication port 96.
[0116] During the insertion of the ink cartridge 30 into the cartridge holder 101, the ink
cartridge 30 may be applied with biasing forces of the compressed coil springs 78
and 98 acting in the rearward direction 52.
[0117] The protruding portion 43 moves below the shaft 145 and the sloping surface 155 may
slidingly contact the shaft 145 during the insertion of the ink cartridge 30 into
the cartridge holder 101. At this time, the needle 102 may enter the ink valve chamber
35, and the outer peripheral surface of the needle 102 may contact the inner peripheral
surface of the packing 76.
[0118] The ink cartridge 30 may also be applied with a rotational moment acting in counterclockwise
in Fig. 8, since the user pushes the upper portion 41U of the rear wall 41. Against
the rotational moment, the contact between the sloping surface 155 and the shaft 145
may generate a rotation moment that causes the ink cartridge 30 to pivot about a center
C of the ink supply port 71 of the packing 76 into which the needle 102 is inserted.
The center C of the ink supply port 71 serves as a pivot center of the ink cartridge
30. In one example, during the movement of the ink cartridge 30 in the insertion direction,
the sloping surface 155 passes underneath the shaft 145. At this time, the needle
102 is in contact with the inner peripheral surface of the packing 76, so that the
ink cartridge 30 may pivot clockwise about the center C of the ink supply port 71
in the packing 76. Although the position of the pivot center of the ink cartridge
30 varies depending on the shape of the needle 102 and the shape of the ink supply
port 71, the pivot center in the illustrative embodiment is the center of a portion
at which the needle 102 contacts the inner peripheral surface of the tubular ink supply
portion 34 (e.g., the inner peripheral surface of the packing 76 defining the ink
supply port 71). The posture of the ink cartridge 30 that has thus pivoted clockwise
about the pivot center (e.g., the posture illustrated in Fig. 8) is referred to as
a second posture. When the ink cartridge 30 is in the second posture, the electrical
contacts 106 are separated or spaced from the first surface 64A in up-down direction.
[0119] The bottom wall 42 of the casing 31 is angled relative to the front-rear direction.
This configuration provides a space between the bottom wall 42 and the bottom wall
of the cartridge holder 101 defining the guide groove 109. This space allows for the
above-described clockwise pivotal movement of the ink cartridge 30. Further, the outside
diameter of the rod 125 is smaller than the inside diameter of the air communication
port 96. This configuration provides a space between the rod 125 and the air communication
port 96. This space also allows for the above-described clockwise pivotal movement
of the ink cartridge 30. In other words, the rod 125 and the air communication port
96 are not positioned relative to each other in the vertical or the up-down direction.
The lower surface of the bottom wall 42 of the ink cartridge 30 need not be angled
relative to the front-rear direction. For example, the ink cartridge 30 may include
a stepped bottom wall 42 in which a rear end portion of the stepped bottom wall 42
is located higher than a front end portion of the stepped bottom wall 42, to provide
a space between the stepped bottom wall 42 and the bottom wall of the cartridge holder
101 defining the guide groove 109.
[0120] When the ink cartridge 30 is in the second posture, a space is also provided between
the electrodes 65 of the IC board 64 and the corresponding electrical contacts 106
in the up-down direction. That is, in the second posture of the ink cartridge 30 resulting
from the clockwise pivotal movement, the electrodes 65 and the electrical contacts
106 are separated or spaced from each other in the up-down direction. In other words,
the first surface 64A and the second surface 64B of the IC board 64 of the ink cartridge
30 that is in the second posture, are located below the electrical contacts 106 without
contacting the electrical contacts 106.
[0121] As the ink cartridge 30, which is in the second posture, is further inserted in
the frontward direction 51 against the biasing forces of the coil springs 78 and 98
acting in the rear direction 52, each of the sloping surface 155 and the horizontal
surface 154 of the protruding portion 43 moves frontward beyond the shaft 145, reaching
a position closer to the end wall of the cartridge holder 101 than the shaft 145,
as depicted in Fig. 8.
[0122] The ink cartridge 30 may be applied with the rotational moment acting in the counterclockwise
direction in Fig. 8 due to user's action of pushing the upper portion 41U of the rear
wall 41. In a state where the sloping surface 155 and the horizontal surface 154 no
longer contacts the shaft 145, the ink cartridge 30 is caused to pivot in the counterclockwise
direction in Fig. 8 about the pivot center, which is the center C of the ink supply
port 71 of the packing 76 through which the needle 102 is inserted. During the counterclockwise
pivotal movement, the ink cartridge 30 may receive reaction forces of the coil springs
78 and 98. The counterclockwise pivotal movement of the ink cartridge 30 causes the
first surface 64A of the IC board 64 to contact the electrical contacts 106 from below
as depicted in Fig. 3, thereby positioning the IC board 64 relative to the electrical
contacts 106 in the up-down direction.
[0123] At this time, the second surface 64B of the IC board 64 faces rearward and opposes
the electrical contacts 106. When the user stops pushing the ink cartridge 30 in the
frontward direction 51, the ink cartridge 30 may be moved rearward by the biasing
forces of the coil springs 78 and 98. The rearward movement of the ink cartridge 30
causes the second surface 64B, which faces rearward and opposes the electrical contacts
106, to contact the electrical contacts 106 from the front. This contact between the
second surface 64B and the electrical contacts 106 may restrict the ink cartridge
30 from moving further rearward. Positioning of the IC board 64 relative to the electrical
contacts 106 in the front-rear direction may thus be achieved by the contact between
the second surface 64B and the electrical contacts 106.
[0124] The IC board 64 is thus positioned in the up-down direction and the front-rear direction.
As a result, the ink cartridge 30 may be held in position in the cartridge-attachment
section 110. The posture of the ink cartridge 30 illustrated in Fig. 3 is referred
to as a first posture. Thus, attachment of the ink cartridge 30 to the cartridge-attachment
section 110 completes.
[0125] When the ink cartridge 30 is in the first posture, the first surface 64A is orthogonal
to the up-down direction, and extends in the front-rear direction and the right-left
direction. When the ink cartridge 30 is in the first posture, the second surface 64B
is orthogonal to the front-rear direction, and extends in the up-down direction and
the right-left direction.
[0126] The ink cartridge 30, when held in the cartridge holder 101, is configured to pivot
between the first posture and the second posture about the pivot center (e.g., the
center C).
[0127] When the ink cartridge 30 is in the first posture, the light blocking plate 67 is
located between the light-emitting element and the light-receiving element of the
optical sensor 113, thereby blocking the light from the light-emitting element toward
the light-receiving element.
[0128] For removing the ink cartridge 30 from the cartridge-attachment section 110, the
user may push the operation surface 92 down. In the first posture of the ink cartridge
30, the operation surface 92 faces upward and rearward, so that, when the user operates
the operation surface 92, a force acting downward and frontward is applied to the
ink cartridge 30, thereby pivoting the ink cartridge 30 clockwise in Fig. 3 about
the center C of the ink supply port 71. In this state, as depicted in Fig. 8, the
second surface 64B of the IC board 64 is located below the lower ends of the electrical
contacts 106, and the protruding portion 43 is located below the shaft 145. That is,
the ink cartridge 30 is moved from the first posture to the second posture. The ink
cartridge 30 may be moved rearward relative to the cartridge-attachment section 110
due to the biasing forces of the coil springs 78 and 98, out of the cartridge-attachment
section 110.
[Determination as to Whether Ink Cartridge 30 is Attached to Cartridge-Attachment
Section 110]
[0129] Referring to flowcharts depicted in Figs. 9 and 10, determination as to whether the
ink cartridge 30 is attached to the cartridge-attachment section 110 will be described
below. Processes depicted in Figs. 9 and 10 may be executed by the CPU of the controller
1, for example, by reading out programs stored in the ROM, or may be executed by a
hardware circuit of the controller 1. The order in which the processes are performed
may be changed as desired without departing from the scope of the invention.
The flowchart depicted in Fig. 9 will now be described.
[0130] A user may pivot the cover 114, which closes the opening 112 of the cartridge holder
101, from the closed position to the open position, to install or attach, for example,
the ink cartridge 30, to the cartridge-attachment section 110. Based on the movement
of the cover 114 from the closed position to the open position, a signal output from
the cover sensor 118 will change from the first signal to the second signal. Based
on the change in the signals output from the cover sensor 118, the controller 1 (refer
to Fig. 1) determines that the cover 114 is not in the closed position (e.g., is in
the open position) (S100: No). The controller 1 repeats step S100 until the cover
114 is closed (e.g., placed in the closed position). After attaching an ink cartridge
(e.g., the ink cartridge 30 or a different type of an ink cartridge) to the cartridge-attachment
section 110, the user may pivot the cover 114 from the open position to the closed
position. As the cover 114 reaches the closed position, a signal output from the cover
sensor 118 will change from the second signal to the first signal. Based on the change
in the signals output from the cover sensor 118, the controller 1 determines that
the cover 114 is in the closed position (S100: Yes). Based on no change in the signal
output from the cover sensor 118, the controller 1 determines that the cover 114 is
in the open position (S100: No).
[0131] Based on the controller 1 determining in S100 that the cover 114 is in the closed
position, the controller 1 determines whether data is readable from the IC board 64
of the ink cartridge (S110). When the electrical contacts 106 are in contact and electrically
connected with the IC board 64, the controller 1 can read data from the IC board 64.
When the electrical contacts 106 do not contact the IC board 64, the controller 1
cannot read data from the IC board 64. Based on the controller 1 determining that
data is not readable from the IC board 64 (S110: No), the controller 1 determines
that the cartridge-attachment section 110 has not received an ink cartridge (S120).
In such case, the controller 1 may cause a display (not depicted) provided at a casing
of the printer 10 to display a message, and/or a speaker (not depicted) of the printer
10 to issue sounds, e.g., buzzer, thereby notifying the user that no ink cartridge
is attached to the cartridge-attachment section 110.
[0132] Based on the controller 1 determining that data is readable from the IC board 64
(S110: Yes), the controller 1 determines whether a signal output from the optical
sensor 113 to the controller 1 is at a high level or low level. The optical sensor
113 is configured to output to the controller 1 a low level signal when the light
blocking plate 67 is located between the light-emitting element and the light-receiving
element of the optical sensor 113, and a high level signal when the light blocking
plate 67 is not located between the light-emitting element and the light-receiving
element.
[0133] Based on the controller 1 determining that the signal output from the optical sensor
113 to the controller 1 is at the high level (S130: High), the controller 1 determines
that the cartridge-attachment section 110 has received a type of an ink cartridge
different from the ink cartridge 30 (S140). In such case, the controller 1 may cause
the display (not depicted) of the printer 10 to display a message, and/or the speaker
(not depicted) of the printer 10 to issue sounds, e.g., buzzer, thereby notifying
the user that a different type of an ink cartridge is attached to the cartridge-attachment
section 110.
[0134] Based on the controller 1 determining that the signal output from the optical sensor
113 to the controller 1 is at the low level (S130: Low), the controller 1 determines
that the cartridge-attachment section 110 has received the ink cartridge 30 (S150).
[0135] In the flowchart of Fig. 9, the controller 1 determines whether the cartridge-attachment
section 110 has received an ink cartridge, based on whether data is readable from
the IC board 64, and subsequently determines whether the ink cartridge received in
the cartridge-attachment section 110 is the ink cartridge 30, based on the level of
a signal output from the optical sensor 113.
[0136] In another example, the controller 1 may determine whether the cartridge-attachment
section 110 has received an ink cartridge, based on levels of signals output from
the optical sensor 113, and subsequently determines whether the ink cartridge received
in the cartridge-attachment section 110 is the ink cartridge 30, based on whether
data is readable from the IC board 64. Such example will now be described in detail
below referring to the flowchart of Fig. 10.
[0137] As depicted in Fig. 10, similar to step S100 of Fig. 9, the controller 1 determines
in S200, whether the cover 114, which has moved to the open position, is moved to
the closed position, based on the change in signals output from the cover sensor 118.
Based on the controller 1 determining in S200 that the cover 114 is moved to the closed
position (S200: Yes), the controller 1 determines whether a signal output from the
optical sensor 113 to the controller 1 is at the high level or the low level (S210).
[0138] Based on the controller 1 determining that the signal output from the optical sensor
113 to the controller 1 is at the high level (S210: High), the controller 1 determines
that the cartridge-attachment section 110 has not received an ink cartridge (S220).
In such case, similar to step S120 in Fig. 9, the controller 1 may cause the display
(not depicted) of the printer 10 to display a message, and/or the speaker (not depicted)
of the printer 10 to issue sounds, e.g., buzzer, thereby notifying the user that no
ink cartridge is attached to the cartridge-attachment section 110.
[0139] Based on the controller 1 determining that the signal output from the optical sensor
113 to the controller 1 is at the low level (S210: Low), the controller 1 subsequently
determines whether data is readable from an IC board of the ink cartridge (S230).
[0140] When the controller 1 determines that data is not readable the IC board of the ink
cartridge (S230: No), the controller 1 determines that the cartridge-attachment section
110 has received a type of an ink cartridge different from the ink cartridge 30 (S240).
In such case, similar to step S140 in Fig. 9, the controller 1 controls relevant components
(e.g., the display and/or the speaker) to provide the user with such a notification
that a different type of an ink cartridge is attached to the cartridge-attachment
section 110.
[0141] When the controller 1 determines that data is readable from the IC board 64 (S230:
Yes), the controller 1 determines that the cartridge-attachment section 110 has received
the ink cartridge 30 (S250).
[Effects of Illustrative Embodiment]
[0142] In the illustrative embodiment, when the ink cartridge 30 is in the first posture,
the second surface 64B contacts the electrical contacts 106, thereby holding the ink
cartridge 30 in the first posture.
[0143] In the illustrative embodiment, the IC board 64 includes at least one of the first
surface 64A and the second surface 64B. When the ink cartridge 30 is in the first
posture, the first surface 64A facing upward, and the second surface 64B facing rearward
may both contact the electrical contacts 106, thereby establishing electrical connection
between the IC board 64 and the electrical contacts 106, and holding the ink cartridge
30 in the first posture relative to the cartridge-attachment section 110 against the
biasing force acting in the rearward direction 52. The establishment of electrical
connection between the IC board 64 and the electrical contacts 106 and the positioning
of the ink cartridge 30 relative to the cartridge-attachment section 110 may thus
be achieved by the contact between the electrical contacts 106 and the first and second
surfaces 64A and 64B. Accordingly, the IC board 64 may be positioned with accuracy
relative to the electrical contacts 106.
[0144] In the illustrative embodiment, the ink cartridge 30 is configured to pivot between
the first posture and the second posture. The first surface 64A of the ink cartridge
30 in the first posture is located higher than the second surface 64B of the ink cartridge
30 in the second posture. A direction in which the first surface 64A moves during
the movement of the ink cartridge 30 from the second posture to the first posture
is toward the electrical contacts 106. The first surface 64A may be readily brought
into contact with the electrical contacts 106 when the ink cartridge 30 pivots from
the second posture to the first posture and the ink cartridge 30 may thus be positioned
in the up-down direction readily.
[0145] In the illustrative embodiment, when the ink cartridge 30 is in the first posture,
the IC board 64 may contact with a respective one of the electrical contacts 106 at
two locations, thereby positioning the IC board 64. More specifically, the second
surface 64B contacts a set of electrical contacts 106 from the front, thereby positioning
the IC board 64 in the front-rear direction, and the first surface 64A contacts the
set of the electrical contacts 106 from below, thereby positioning the IC board 64
in the up-down direction.
[0146] In the illustrative embodiment, the electrical contact 106 contacts the corresponding
electrode 65 of the IC board 64 at two locations, thereby stabilizing electrical contact
between the electrical contact 106 and the electrode 65. For example, if dust and/or
foreign materials are attached to a portion of the electrode 65 located on one of
the first surface 64A and the second surface 64B, another portion of the electrode
65 located on the other one of the first surface 64A and the second surface 64B can
electrically connect to the electrical contact 106.
[0147] In the illustrative embodiment, the second surface 64B is orthogonal to the front-rear
direction. This configuration may reduce such a possibility that the ink cartridge
30 held in position in the cartridge-attachment section 110 comes out of the section
110, as compared with the configuration of an ink cartridge 30 having a second surface
64B that is not orthogonal to the front-rear direction in a state in which the ink
cartridge 30 is in the first posture.
[0148] In the illustrative embodiment, the first surface 64A is orthogonal to the up-down
direction. With this configuration, the IC board 64 may be positioned in the up-down
direction with higher accuracy, as compared with an ink cartridge 30 having a first
surface 64A that is not orthogonal to the up-down direction in a state in which the
ink cartridge 30 is in the first posture.
[0149] In the illustrative embodiment, the ink cartridge 30 is configured to pivot between
the first posture and the second posture about a contact portion between the packing
76 and the needle 102. The ink cartridge 30 can pivot between the first posture and
the second posture with simple configuration.
[First Modification]
[0150] In the illustrative embodiment, when the ink cartridge 30 is in the first posture,
the first surface 64A is orthogonal to the up-down direction and the second surface
64B is orthogonal to the front-rear direction. In another embodiment, when the ink
cartridge 30 is in the first posture, the first surface 64A may face upward (e.g.,
face in a direction including an upward component) but not orthogonal to the up-down
direction; and the second surface 64B may face rearward (e.g., face in a direction
including a rearward component) but not orthogonal to the front-rear direction.
[0151] For example, the protruding portion 83 may have such a recessed portion 82 as depicted
in Fig. 11. The recessed portion 82 is defined by a first inclined surface 82D and
a second inclined surface 82E. The first inclined surface 82D faces frontward and
upward and a front end of the first inclined surface 82D is continuous with the second
inclined surface 82E. The second inclined surface 82E faces rearward and upward. The
IC board 64 may be attached to the first inclined surface 82D and the second inclined
surface 82E. The IC board 64 attached to the first inclined surface 82D and the second
inclined surface 82E includes a first surface 64A and a second surface 64B. The first
surface 64A faces a direction opposite a direction that a surface of the IC board
64 attached to the first inclined surface 82D faces. The second surface 64B faces
a direction opposite a direction that a surface of the IC board 64 attached to the
second inclined surface 82E faces.
[0152] When the ink cartridge 30 is in the first posture as depicted in Fig. 11, the first
surface 64A contacts the electrical contacts 106 obliquely from the rear and below
and the second surface 64B contacts the electrical contacts 106 obliquely from the
front and below .
[Second Modification]
[0153] In the illustrative embodiment and the first modification, the IC board 64 includes
the first surface 64A and the second surface 64B, each configured to contact the electrical
contacts 106. In another embodiment, the IC board 64 may include at least one of the
first surface and the second surface. For example, one of the first surface and the
second surface may be disposed at the IC board 64, while the other one of the first
surface and the second surface may be disposed at a surface of the ink cartridge 30
different from surfaces of the IC board 64 (e.g., a surface defining the recessed
portion 82).
[0154] For example, as depicted in Fig. 12, the IC board 64 may be attached to the first
inclined surface 82D of the recessed portion 82 but not attached to the second inclined
surface 82E. When the ink cartridge 30 is in the first posture, the electrical contacts
106 may contact an upper surface 64C of the IC board 64 (facing frontward and upward)
and the second inclined surface 82E of the recessed portion 82. In this configuration,
the upper surface 64C of the IC board 64 is an example of the first surface and the
second inclined surface 82E of the recessed portion 82 is an example of the second
surface.
[0155] For example, as depicted in Fig. 13, the IC board 64 may be attached to the second
inclined surface 82E of the recessed portion 82 but not attached to the first inclined
surface 82D. When the ink cartridge 30 is in the first posture, the electrical contacts
106 may contact an upper surface 64D of the IC board 64 (facing rearward and upward)
and the first inclined surface 82D of the recessed portion 82. In this configuration,
the first inclined surface 82D of the recessed portion 82 is an example of the first
surface and the upper surface 64D of the IC board 64 is an example of the second surface.
[0156] In the second modification, the IC board 64 may be disposed without bending. Accordingly,
the IC board 64 may not necessarily be a flexible board, but may be, for example,
a rigid glass-epoxy board.
[0157] In the configuration depicted in Fig. 12, the electrical contacts 106 located in
the recessed portion 82, each contact the ink cartridge 30 at two locations. One of
the locations is at the second inclined surface 82E and the other one of the locations
is at the upper surface 64C of the IC board 64. The second inclined surface 82E and
the upper surface 64C are arranged in the front-rear direction. With this configuration,
the IC board 64 may be positioned relative to the electrical contacts 106 with higher
accuracy, as compared with a configuration in which each electrical contact 106 contacts
the IC board 64 of the ink cartridge 30 at one location.
[0158] In the configuration depicted in Fig. 13, the IC board 64 (e.g., the upper surface
64D) contacts the electrical contact 106, thereby establishing electrical connection
between the IC board 64 and the electrical contact 106 and holding of the ink cartridge
30 in position. In this way, establishment of the electrical connection and the holding
of the ink cartridge 30 may be achieved by the contact between the upper surface 64D
of the IC board 64 and the electrical contact 106 at one location. This configuration
may achieve accurate positioning of the IC board 64 relative to the electrical contacts
106.
[Third Modification]
[0159] The IC board 64 may be a combination of a flexible board and a rigid board. For example,
as depicted in Fig. 14, the IC board 64 includes a first board 61 and a second board
62 that are rigid boards, and a third board 63 that is a flexible board. Each of the
first board 61, the second board 62, and third board 63 includes electrodes 65. Portions
of the third board 63 having the electrodes 65 may be partially attached to the first
board 61 and the second board 62. Another portion of the third board 63 may be disposed
between a first surface 64A and a second surface 64B while bending or curving. The
first surface 64A may be a surface of the first board 61 having the electrodes 65.
The second surface 64B may be a surface of the second board 62 having the electrodes
65.
[0160] The IC board 64 may include a connecting member, such as a lead wire, instead of
the third board 63. The electrodes 65 of each board 61, 62 may be electrically connected
by the connecting member. In the configurations in which the first board 61 and the
second board 62 are electrically connected by the third board 63 or by the connecting
member, the first surface 64A and the second surface 64B may be separated. In other
words, the first surface 64A and the second surface 64B may not necessarily be continuous.
[Fourth Modification]
[0161] In the illustrative embodiment and the first, second and third modifications, each
of the electrical contacts 106 contacts the ink cartridge 30 in the first posture
at two locations (e.g., at the first surface and the second surface of the ink cartridge
30).
[0162] Alternatively, each of the electrical contacts 106 may contact the ink cartridge
30 in the first posture at one location.
[0163] For example, as depicted in Figs. 15 and 16, the IC board 64 may be attached to the
ink cartridge 30 such that a rear surface 64E (an example of a contact surface) of
the IC board 64 faces rearward. When the ink cartridge 30 is in the first posture,
the rear surface 64E contacts a particular portion of the electrical contact 106 from
the front. Other portion of the electrical contact 106 than the particular portion
may not necessarily contact the ink cartridge 30.
[0164] In the examples depicted in Figs. 15 and 16, the cartridge-attachment section 110
includes a positioning surface 107 disposed at a portion near the top wall of the
cartridge holder 101 between the set of the electrical contacts 106 and the shaft
145. The protruding portion 83 of the ink cartridge 30 includes a contact surface
84 disposed to the rear of the IC board 64. The contact surface 84 faces upward. When
the ink cartridge 30 has been attached to the cartridge-attachment section 110, the
contact surface 84 contacts the positioning surface 107, thereby positioning the ink
cartridge 30 in the up-down direction.
[0165] When the ink cartridge 30 is in the first posture, the rear surface 64E may or may
not be orthogonal to the front-rear direction as depicted in Figs. 15 and 16, respectively.
An ink cartridge 30 depicted in Fig. 16 includes, at its upper surface, a stepped
portion having a slope surface on which the IC board 64 is disposed. The slope surface
is an inclined surface facing upward and rearward. In the fourth modification, the
IC board 64 may be disposed without bending. Accordingly, the IC board 64 may not
necessarily be a flexible board similar to the second modification.
[0166] In the fourth modification, when the ink cartridge 30 is in the first posture, the
rear surface 64E contacts the electrical contact 106 from the front. This configuration
may restrict the movement of the ink cartridge 30 in the front-rear direction against
the biasing forces of the coil springs 78 and 98 acting in the removal direction,
thereby holding the ink cartridge 30 in the first posture.
[0167] In the fourth modification, the ink cartridge 30 is configured to pivot between
the first posture and the second posture in the cartridge holder 101. The contact
surface 84 of the ink cartridge 30 in the second posture is located lower than the
contact surface 84 of the ink cartridge 30 in the first posture. When the ink cartridge
30 pivots from the second posture to the first posture, the contact surface 84 moves
toward the positioning surface 107. By bringing the contact surface 84 into contact
with the positioning surface 107, the ink cartridge 30 may be positioned in the up-down
direction readily.
[0168] In the fourth modification, the IC board 64 includes the rear surface 64E. The rear
surface 64E may contact the electrical contacts 106, thereby establishing electrical
connection between the IC board 64 and the electrical contacts 106, and holding the
ink cartridge 30 in position. The IC board 64 may thus be positioned with accuracy
relative to the electrical contacts 106.
[0169] In an example of the fourth modification as depicted in Fig. 15, the rear surface
64E is orthogonal to the front-rear direction, e.g., the removal direction of the
ink cartridge 30. This configuration may reduce such a possibility that the ink cartridge
30 held in position in the cartridge-attachment section 110 comes out of the section
110, as compared with the configuration of the ink cartridge 30 as depicted in Fig.
16, that is, the rear surface 64E is not orthogonal to the front-rear direction in
a state in which the ink cartridge 30 is in the first posture.
[Other Modifications]
[0170] In the illustrative embodiment and the modifications, the casing 31 includes the
protruding portion 83. In another embodiment, the casing 31 may not include the protruding
portion 83. In this configuration, for example, the top wall 39 of the casing 31 may
have the recessed portion 82 formed at an upper surface thereof.
[0171] In the illustrative embodiment, the ink cartridge 30 includes the recessed portion
82. In another embodiment, the ink cartridge 30 may not include the recessed portion
82. For example, as depicted in Fig. 17, the protruding portion 83 of the ink cartridge
30 may include a protrusion 68 protruding upward from an upper surface thereof. The
protrusion 68 includes a rear surface 68A. The top wall 39 may include an upper surface
39A extending rearward from a lower end of the rear surface 68A. The IC board 64 may
be attached to the rear surface 68A and the upper surface 39A. When the ink cartridge
30 is in the first posture, the electrical contacts 106 may contact a first surface
64F and a second surface 64G of the IC board 64. The first surface 64F faces a direction
opposite a direction that a surface of the IC board 64 attached to the upper surface
39A faces. The first surface 64F faces upward. The second surface 64G faces a direction
opposite a direction that a surface of the IC board 64 attached to the rear surface
68A faces. The second surface 64G faces rearward.
[0172] The ink cartridge 30 may have configurations other than those described above in
the illustrative embodiment and the modifications, provided that the ink cartridge
30 is configured to pivot between the first posture and the second posture in the
cartridge holder 101. For example, an ink cartridge 30 may be configured as depicted
in Fig. 18. The ink cartridge 30 depicted in Fig. 18 includes a casing 31 having a
generally rectangular parallelepiped outer shape. The casing 31 has an ink chamber
32 formed therein. The ink cartridge 30 depicted in Fig. 18 does not include the light
blocking plate 67, the protruding portion 83, the protruding portion 43, or the operation
portion 90. Similar to the illustrative embodiment, the IC board 64 includes the first
surface 64A that is orthogonal to the up-down direction and faces upward, and the
second surface 64B that is orthogonal to the front-rear direction and faces rearward.
The ink cartridge 30 depicted in Fig. 18 includes a protrusion 69 that protrudes from
an upper surface thereof in the upward direction 54 that is orthogonal to the front-rear
direction. A portion of the IC board 64 is attached to the protrusion 69. As described
in conjunction with the modification, the first surface 64A may not necessarily be
orthogonal to the up-down direction, and the second surface 64B may not necessarily
be orthogonal to the front-rear direction. In another modification, a recessed or
stepped portion formed at the upper surface of an ink cartridge 30 may define the
first surface 64A and the second surface 64B.
[0173] The ink cartridge 30 depicted in Fig. 18 does not include the coil springs 78 or
98. In other words, the ink cartridge 30 is not limited to such an ink cartridge configured
to be inserted into the cartridge-attachment section 110 against the biasing force
acting in the rearward direction 52.
[0174] The ink cartridge 30 depicted in Fig. 18 does not include the valve 97. The ink cartridge
30 depicted in Fig. 18 may have an air communication port 96, for example, at an upper
surface thereof. The air communication port 96 may be sealed by, for example, a removable
label 73. The label 73 sealing the air communication port 96 may be removed before
the ink cartridge 30 is attached to the cartridge-attachment section 110.
[0175] The ink cartridge 30 depicted in Fig. 18 does not include the valve 77. The ink cartridge
30 depicted in Fig. 18 may include an ink supply portion 35 having a packing 76 at
a front end portion thereof. The packing 76 has an ink supply port 71 formed at a
central portion thereof. The ink supply port 71 is sealed by a removable label 72.
[0176] During the insertion of the ink cartridge 30 into the cartridge-attachment section
110, the needle 102 located at the cartridge-attachment section 110 pierces through
the label 72 into the ink supply port 71 as depicted in Fig. 19, thereby allowing
ink in an interior space 32 of the ink cartridge 30 to flow to the interior space
102A of the needle 102. The outer peripheral surface of the needle 102 fluid-tightly
contacts an inner peripheral surface of the packing 76 defining the ink supply port
71 while elastically deforming the packing 76. This configuration may prevent or reduce
ink leakage through a space between the needle 102 and the packing 76.
[0177] In a state in which the ink cartridge 30 has been attached to the cartridge-attachment
section 110 as depicted in Fig. 19, the electrical contacts 106 disposed at the cartridge-attachment
section 110 contact the first surface 64A and the second surface 64B.
[0178] In the illustrative embodiment, the electrical contacts 106 have elasticity. In another
embodiment, the electrical contacts 106 may not necessarily have elasticity.
[0179] In the illustrative embodiment, ink serves as an example of liquid. However, the
liquid of the disclosure is not limited to ink. For example, a liquid cartridge may
store pretreatment liquid that is ejected onto a sheet prior to ink during printing.
Alternatively, a liquid cartridge may store cleaning water for cleaning the recording
head 21.