Liquid ejector

Details Liquid ejector Liquid ejector

2011-04-12

2011-04-12

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07922305

ABSTRACT:
A liquid ejector including: a nozzle; a pressure chamber communicating, at one end thereof in a specific direction, with the nozzle; a liquid-store chamber; a restrictor through which the other end of the pressure chamber in the specific direction and the liquid-store chamber communicate with each other; and an actuator having a plurality of piezoelectric layers, a pair of electrode layers, and an active portion that is constituted by a portion of one of the plurality of piezoelectric layers, which portion is interposed between the pair of electrode layers, wherein the active portion is disposed at a position corresponding to the pressure chamber so as to extend in the specific direction, and has a shorter length than the pressure chamber in the specific direction, and wherein a center of the active portion in the specific direction is shifted toward the nozzle than a center of the pressure chamber in the specific direction.

REFERENCES:
patent: 5218376 (1993-06-01), Asai
patent: 5684520 (1997-11-01), Morikoshi et al.
patent: 6155673 (2000-12-01), Nakajima et al.
patent: 6488364 (2002-12-01), Nakajima et al.
patent: 7234789 (2007-06-01), Sekiguchi
patent: 4-10942 (1992-01-01), None
patent: 4220349 (1992-08-01), None
patent: 7-329292 (1995-12-01), None
patent: 2004-154962 (2004-06-01), None

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