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(11) | EP 0 985 535 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Ink jet recording head and ink jet recording apparatus comprising the same |
(57) An ink jet recording head comprises a nozzle forming member (16) provided with a
plurality of nozzle orifices (15) for jetting ink, a channel forming substrate (10)
provided with a plurality of pressure generating chambers (12) communicated with the
associated nozzle orifices (15), one face of which is bonded to the nozzle forming
member (16), a plurality of piezoelectric elements (70) provided on an face of the
channel forming substrate (10) which is opposed to the face bonded to the nozzle forming
substrate (16) for causing pressure change to occur in the associated pressure generating
chambers (12), and a reservoir forming member (20) bonded to the face of the channel
forming substrate (10) on which the piezoelectric elements (70) are provided, the
reservoir forming member (20) having a reservoir section (21) forming at least a part
of a reservoir communicated with the pressure generating chambers (12) for supplying
ink thereto and a piezoelectric element holding section (24) for defining a space
in an area facing the piezoelectric elements (70) such an extent that motion of the
respective piezoelectric elements (70) is exhibited while sealing the space hermetically. |