Piezoelectric ink jet print head and method of making the same

Details Piezoelectric ink jet print head and method of making the same Piezoelectric ink jet print head and method of making the same

2005-11-15

2005-11-15

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06964472

ABSTRACT:
An ink jet print head includes a cavity plate having a plurality of nozzles and a plurality of pressure chambers communicating with the respective nozzles, and a plate-like piezoelectric actuator, in which piezoelectric sheets having a plurality of electrodes formed at positions with respect to the pressure chambers are stacked one after another. The piezoelectric actuator is bonded to the cavity plate so as to close the pressure chambers in the cavity plate. Each of the piezoelectric sheets has a thickness of between 5-40 μm, preferably between 15-30 μm. Surface electrodes, which electrically connect one of the electrodes, are provided at both end portions of a surface of the piezoelectric actuator, which is opposed to a surface to be bonded to the cavity plate. Protrusions having a thickness of the surface electrodes are provided between the surface electrodes on the surface of the piezoelectric actuator.

REFERENCES:
patent: 5265315 (1993-11-01), Hoisington et al.
patent: 5402159 (1995-03-01), Takahashi et al.
patent: 6074047 (2000-06-01), Hotomi et al.
patent: 6134761 (2000-10-01), Usui
patent: 10-166573 (1998-06-01), None
patent: 11-179906 (1999-07-01), None

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