Piezoelectric actuator and liquid-droplet jetting head

Details Piezoelectric actuator and liquid-droplet jetting head Piezoelectric actuator and liquid-droplet jetting head

2011-03-29

2011-03-29

Lepisto, Ryan (Department: 2883)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S020000, C347S040000, C347S041000, C347S047000, C347S048000, C347S068000, C347S071000

Reexamination Certificate

active

07914129

ABSTRACT:
A piezoelectric actuator includes a first ceramic sheet having individual inner-electrodes formed thereon, a second ceramic sheet having a common inner-electrode formed thereon, a third ceramic sheet having individual surface-electrodes formed thereon, and a fourth ceramic sheet having a plurality of connection electrodes connecting the individual surface-electrodes and the individual inner-electrodes respectively. The connection electrodes have first portions, second portions and third portions respectively, the first portions facing the individual surface-electrodes and arranged at a pitch in a row in a row-direction, the second portions facing the individual inner-electrodes and being arranged in the row-direction to be shifted with respect to the first portions by half the pitch respectively; and the third portions connecting the first portions and the second portions respectively. Accordingly, the electrodes can be made compact or arranged highly densely without lowering the conductance between the electrodes.

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patent: 2006-15539 (2006-01-01), None

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