Ink jet recording apparatus

Details Ink jet recording apparatus Ink jet recording apparatus

2008-05-06

2008-05-06

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S010000, C347S011000, C347S012000, C347S013000, C347S069000

Reexamination Certificate

active

07367658

ABSTRACT:
An ink jet recording apparatus comprises an ink jet recording head in which a volume of a pressure chamber is caused to vary by deflecting actuators according to drive signals applied between an electrode relative to a pressure chamber from which ink is ejected and actuators relative to two pressure chambers sandwiching the former, and a drive signal generator that generates drive signals for operating the recording head in the four time-divisional drive method. The drive signal generator simultaneously supplies drive signals so that magnitudes of deflections of the outmost actuators14fand14iamong four actuators disposed close around the pressure chamber9gfrom which ink is not to be ejected at a timing when the ink ejection therefrom is enabled in the time divisional driving operation become substantially equal to magnitudes of deflections of the outmost actuators14band14eamong four actuators close around pressure chamber9cfrom which ink is caused to be ejected, to electrodes relative to the outmost pressure chambers9fand9hamong three pressure chambers closely disposed with the center on the pressure chamber9g. Thus, variations in velocity and volume between ink droplets ejected that are caused due to cross-talk between pressure chambers can be reduced.

REFERENCES:
patent: 5400064 (1995-03-01), Pies et al.
patent: 5444467 (1995-08-01), Stortz
patent: 5767871 (1998-06-01), Imai
patent: 2005/0099452 (2005-05-01), Kusunoki
patent: 2000-255055 (2000-09-01), None

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