Liquid ejection head and image forming apparatus

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

2009-01-22

2011-11-08

Mruk, Geoffrey (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S070000

Reexamination Certificate

active

08052248

ABSTRACT:
Disclosed is a liquid ejection head that includes a flow path member having provided therein plural liquid chambers respectively in communication with plural nozzles that eject a liquid droplet and are arranged side by side; a vibration plate member that forms at least a part of wall surfaces of the liquid chambers; plural piezoelectric element columns that deform the vibration plate member at positions corresponding to the liquid chambers; a supporting column that corresponds to a partition wall sandwiched between the liquid chambers; and a base member on which the plural piezoelectric element columns and the supporting column are arranged. The supporting column is arranged so as to be sandwiched between a group of two or more of the consecutive piezoelectric element columns in a nozzle arrangement direction.

REFERENCES:
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patent: 6729716 (2004-05-01), Eguchi et al.
patent: 7264338 (2007-09-01), Ogata et al.
patent: 2004/0109047 (2004-06-01), Tobita et al.
patent: 2001-270116 (2001-10-01), None
patent: 3454833 (2003-07-01), None
patent: 2004-160941 (2004-06-01), None
patent: 2005-34997 (2005-02-01), None
patent: 2007-69545 (2007-03-01), None
patent: 2007-210310 (2007-08-01), None

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