Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-02-17

2010-06-01

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S010000, C347S012000, C347S014000, C347S019000

Reexamination Certificate

active

07726759

ABSTRACT:
The image forming apparatus comprises: a liquid ejection head which has a plurality of nozzles and a plurality of pressure generating elements corresponding to the nozzles, and applies a drive signal to the pressure generating elements so as to eject recording liquid from the nozzles; a plurality of drive waveform generating circuits which generate the drive signal having waveform for driving the pressure generating elements; a plurality of dummy capacitive loads which are connected to the drive waveform generating circuits; and a circuit selection device which selects at least one of the drive waveform generating circuits for applying the drive signal to at least one of the pressure generating elements and the dummy capacitive loads.

REFERENCES:
patent: 6193346 (2001-02-01), Nakano
patent: 6357846 (2002-03-01), Kitahara
patent: 6619777 (2003-09-01), Chang
patent: 2002/0167560 (2002-11-01), Fujimori
patent: 2004/0125159 (2004-07-01), Usuda et al.
patent: 11-91143 (1999-04-01), None
patent: 11-221921 (1999-08-01), None
patent: 11-320872 (1999-11-01), None
patent: 2000-37867 (2000-02-01), None
patent: 2002-59543 (2002-02-01), None
patent: 2002-154207 (2002-05-01), None
patent: 2004-122120 (2004-04-01), None

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