Liquid ejection head and image forming apparatus

Details Liquid ejection head and image forming apparatus Liquid ejection head and image forming apparatus

2005-09-29

2009-08-11

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S068000

Reexamination Certificate

active

07571985

ABSTRACT:
The liquid ejection head comprises: a nozzle surface on which a plurality of nozzles are arranged; a diaphragm on which a plurality of piezoelectric elements are arranged; a plurality of pressure chambers which are defined between the nozzle surface and the diaphragm, each of the plurality of pressure chambers applying pressure to liquid which is ejected from a corresponding one of the plurality of nozzles; a common liquid chamber which is defined on a side of the diaphragm opposite to a side of the diaphragm on which the plurality of pressure chambers are defined, the common liquid chamber communicating with each of the plurality of pressure chambers via a corresponding supply port, at least a portion of a surface of the common liquid chamber which contacts liquid being made as a thin layer; and a plurality of electrical wires which are formed in a direction substantially perpendicular to a surface of the diaphragm on which the piezoelectric elements are arranged, at least a portion of each of the electrical wires passing through the common liquid chamber.

REFERENCES:
patent: 6491384 (2002-12-01), Usui et al.
patent: 6616270 (2003-09-01), Miyata et al.
patent: 7264338 (2007-09-01), Ogata et al.
patent: 2003/0206218 (2003-11-01), Miyata et al.
patent: 9-226114 (1997-09-01), None
patent: 2000-127379 (2000-05-01), None
patent: 2001-179973 (2001-07-01), None
patent: 2002-234155 (2002-08-01), None
patent: 2003-39665 (2003-02-01), None
The English translation of the Kurashima reference (JP 2001179973), pp. 1-4.

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