Printhead with sub-ejection pulse for non-firing nozzles

Details Printhead with sub-ejection pulse for non-firing nozzles Printhead with sub-ejection pulse for non-firing nozzles

2006-10-10

2010-12-07

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S009000, C347S014000, C347S019000

Reexamination Certificate

active

07845747

ABSTRACT:
A printhead IC comprising: an array of nozzles; and, drive circuitry for receiving print data and sending drive pulses to the nozzles in accordance with the print data; wherein, the drive pulses consist of ejection pulses with sufficient energy to eject printing fluid from the nozzles designated to fire at that time, and sub-ejection pulses with insufficient energy to eject printing fluid from the nozzles not designated to fire at that time.

REFERENCES:
patent: 6120125 (2000-09-01), Kim
patent: 6375299 (2002-04-01), Foster et al.
patent: 7001007 (2006-02-01), Silverbrook
patent: 7419250 (2008-09-01), Silverbrook
patent: 2003/0202085 (2003-10-01), Rother
patent: 2005/0275676 (2005-12-01), Parish et al.
patent: 2006/0209146 (2006-09-01), Reeves
patent: 2006/0221112 (2006-10-01), Ito
patent: 0174751 (1988-11-01), None
patent: WO 99/08875 (1999-02-01), None

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