Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-01-29
2010-11-23
Feggins, K. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
07837305
ABSTRACT:
A piezoelectric element includes a pressure chamber member that has an opening communicating with a nozzle, a vibrating plate that is disposed on the pressure chamber member so as to cover the opening, a lower electrode that is disposed on the vibrating plate, a piezoelectric body that is disposed on the lower electrode, an upper electrode that is disposed on the piezoelectric body and in a region opposed to the opening, and a lead electrode that is disposed on the piezoelectric body, that extends from the upper electrode, and that has a width smaller than that of the upper electrode. The piezoelectric body includes a groove portion that is disposed in a predetermined region along an edge portion of the opening and an inactive region (piezoelectric inactive region) that is a region other than the groove portion, that is disposed along the edge portion of the opening, and that does not substantially serve as a piezoelectric element. The lead electrode is disposed in the piezoelectric inactive region.
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Fujii Eiji
Hara Shintarou
Horio Hideaki
Sadamatsu Kazumi
Watanabe Osamu
Feggins K.
Greenblum & Bernstein P.L.C.
Panasonic Corporation
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