Liquid discharging head and image forming apparatus...

Details Liquid discharging head and image forming apparatus... Liquid discharging head and image forming apparatus...

2008-05-29

2011-10-25

Mruk, Geoffrey (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S068000, C347S072000

Reexamination Certificate

active

08042918

ABSTRACT:
A liquid discharging head includes a piezoelectric actuator configured to displace a vibration plate to cause a nozzle to discharge a liquid drop from a liquid chamber. The piezoelectric actuator includes at least three piezoelectric elements aligned in a line. Each of the at least three piezoelectric elements includes a plurality of piezoelectric element columns and a groove. The plurality of piezoelectric element columns is aligned in a direction in which the at least three piezoelectric elements are aligned. The groove is provided between adjacent piezoelectric element columns. At least one of the at least three piezoelectric elements has a pitch between adjacent piezoelectric element columns that is different from a pitch between adjacent piezoelectric element columns of at least one other piezoelectric element of the at least three piezoelectric elements.

REFERENCES:
patent: 5907340 (1999-05-01), Katakura et al.
patent: 2002/0017142 (2002-02-01), Kitahara
patent: 2007/0291084 (2007-12-01), Hayashi
patent: 8-118642 (1996-05-01), None
patent: 8-127126 (1996-05-01), None
patent: 8-142325 (1996-06-01), None
patent: 10-157148 (1998-06-01), None
patent: 2003-266711 (2003-09-01), None
patent: 2006-175845 (2006-07-01), None

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