EP 0498291 A1 19920812 - Nozzle structures for bubblejet print devices.
Title (en)
Nozzle structures for bubblejet print devices.
Title (de)
Düsenstrukturen für Tintenstrahldrucker.
Title (fr)
Structures des éjecteurs pour imprimantes à jet d'encre.
Publication
Application
Priority
- AU 8999691 A 19911223
- AU PK437491 A 19910130
- AU PK473191 A 19910222
- AU PK473291 A 19910222
- AU PK473391 A 19910222
- AU PK473491 A 19910222
- AU PK473591 A 19910222
- AU PK473691 A 19910222
- AU PK473791 A 19910222
- AU PK473891 A 19910222
- AU PK473991 A 19910222
- AU PK474091 A 19910222
- AU PK474191 A 19910222
- AU PK474291 A 19910222
- AU PK474391 A 19910222
- AU PK474491 A 19910222
- AU PK474591 A 19910222
- AU PK474691 A 19910222
Abstract (en)
A bubblejet print device (100) is disclosed which is integrally formed having arrays (102,103,104,105) of nozzles (110) which form part of a passageway communicating between opposite surfaces of a semiconductor substrate (130). Each nozzle (110) has an integrally formed heater (120) which permits heating of ink (106) within the respective nozzle (110) for the ejection of an ink drop (108) therefrom. The heater (120) can provide a fault tolerant structure through the provision of a main heater (121,441) and a redundant heater (122,443) each of which can be separately energised from a corresponding electronic drive circuit (160,165). Several methods of manufacturing the device (100) using semiconductor fabrication techniques are also disclosed. A bubblejet print head (200) incorporating the device (100) can form part of an image reproducing apparatus (531,533,535,537) and is capable of printing full colour images at 400 dpi and monochrome images up to 1600 dpi. An ink drop size of about 3 picolitres is used for these image intensities. A thermal shunt (140) or diffuser (491) are used to transport heat away from the heater (120) to prevent formation of hot spots thereabout after the ejection of an ink drop (108). Electronic circuitry (310,302-305) is disclosed which is used to couple data to the device (100) to provide full width page printing using a stationary head (200) and a moving paper medium (220). <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/14 (2006.01); B41J 2/16 (2006.01); B41J 2/175 (2006.01)
CPC (source: EP)
B41J 2/1404 (2013.01); B41J 2/14056 (2013.01); B41J 2/14137 (2013.01); B41J 2/14145 (2013.01); B41J 2/1603 (2013.01); B41J 2/1623 (2013.01); B41J 2/1628 (2013.01); B41J 2/1629 (2013.01); B41J 2/1631 (2013.01); B41J 2/1632 (2013.01); B41J 2/1635 (2013.01); B41J 2/1642 (2013.01); B41J 2/1643 (2013.01); B41J 2/1645 (2013.01); B41J 2/17563 (2013.01); B41J 2002/1437 (2013.01); B41J 2202/11 (2013.01); B41J 2202/13 (2013.01)
Citation (search report)
- [A] EP 0244214 A1 19871104 - HEWLETT PACKARD CO [US]
- [A] EP 0321075 A2 19890621 - HEWLETT PACKARD CO [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 12, no. 466 (M-772)7 December 1988 & JP-A-63 191 644 ( SEIKO EPSON CORPORATION ) 9 August 1988
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0498291 A1 19920812; EP 0498291 B1 19960410; AT E136500 T1 19960415; AT E144741 T1 19961115; DE 69209684 D1 19960515; DE 69209684 T2 19961017
DOCDB simple family (application)
EP 92101474 A 19920129; AT 92101474 T 19920129; AT 92101476 T 19920129; DE 69209684 T 19920129