Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-10-10
2006-10-10
Hsieh, Shih-wen (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S010000, C347S042000
Reexamination Certificate
active
07118186
ABSTRACT:
A printer includes a printer having a pagewidth inkjet printhead. Feedback lines from the printhead are coupled to a processor that controls the printhead. Signals conveyed on the feedback lines indicate parameters such as the temperature of the printhead, available printhead actuator voltage, actuator heater resistivity and actuator heater width. A firing pulse circuit processes the temperature and voltage signals on the feedback lines to generate firing pulses that are applied to the printhead. The firing pulse circuit includes sample and hold circuits and analog to digital converters that convert the temperature and voltage parameters to digital signals that are applied to a memory table. The memory table is loaded with values by the processor. The processor determines the memory table values on the basis of a user brightness setting, an ink viscosity curve, actuator heater resistivity, the actuator heater width and the voltage and resistivity signals. Consequently a pagewidth inkjet printer is provided with firing pulses that are dynamically adjusted according to the printhead's operating conditions.
REFERENCES:
patent: 5072235 (1991-12-01), Slowik et al.
patent: 5502469 (1996-03-01), Watanabe
patent: 5511206 (1996-04-01), Yasuda
patent: 5630063 (1997-05-01), McConnell
patent: 5754193 (1998-05-01), Elhatem
patent: 5781204 (1998-07-01), Kanematsu et al.
patent: 5867183 (1999-02-01), Cornell
patent: 5943069 (1999-08-01), Kamiyama et al.
patent: 5982395 (1999-11-01), Olson
patent: 6145065 (2000-11-01), Takahashi
patent: 6460964 (2002-10-01), Osborne
patent: 6493112 (2002-12-01), Arce
patent: 6547368 (2003-04-01), Silverbrook
patent: 6600573 (2003-07-01), Shaked
patent: 390202 (1990-10-01), None
patent: 842777 (1998-05-01), None
patent: WO 99/04368 (1999-01-01), None
Lapstun Paul
Silverbrook Kia
Walmsley Simon Robert
Hsieh Shih-wen
Silverbrook Research Pty Ltd
LandOfFree
Inkjet printhead feedback processing arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inkjet printhead feedback processing arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inkjet printhead feedback processing arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3692985