Printhead IC with non-ejection maintenance

Details Printhead IC with non-ejection maintenance Printhead IC with non-ejection maintenance

2011-01-25

2011-01-25

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S015000, C347S026000

Reexamination Certificate

active

07874633

ABSTRACT:
A printhead IC is provided having an ejection nozzle having a heater for heating printing fluid, and drive circuitry for generating print pulses and maintenance pulses for driving the heater of the ejection nozzle. The maintenance pulses have a series of sub-ejection pulses preceding a de-clog pulse. The print signals are generated to heat the heater to form a first vapor bubble in printing fluid that causes ejection of the printing fluid from the nozzle. The de-clog pulse is generated to have lower power and longer duration than the print pulses so as to heat the heaters to form a second vapor bubble in the printing fluid which does not cause ejection. The sub-ejection pulses are generated to have lower power than the print pulses and shorter duration than the de-clog pulse so as to heat the heater without sufficient energy to nucleate a vapor bubble in the printing fluid.

REFERENCES:
patent: 4982199 (1991-01-01), Dunn
patent: 5736995 (1998-04-01), Bohorquez et al.
patent: 5933584 (1999-08-01), Maniwa
patent: 6064838 (2000-05-01), Maruta et al.
patent: 6120125 (2000-09-01), Kim
patent: 6375299 (2002-04-01), Foster et al.
patent: 6698862 (2004-03-01), Choi et al.
patent: 2003/0202085 (2003-10-01), Rother
patent: 0174751 (1988-11-01), None
patent: WO 99/08875 (1999-02-01), None

Affiliated with

Also associated with

Rating

Printhead IC with non-ejection maintenance does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Printhead IC with non-ejection maintenance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printhead IC with non-ejection maintenance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2624388