Thermal bend actuated inkjet with pre-heat mode

Details Thermal bend actuated inkjet with pre-heat mode Thermal bend actuated inkjet with pre-heat mode

2005-07-12

2005-07-12

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S057000, C347S014000

Reexamination Certificate

active

06916087

ABSTRACT:
An inkjet printhead with thermal bend actuators for ejecting ink from the nozzle apertures and drive circuitry for operating each thermal bend actuator in a normal mode wherein drive signals to the actuator ejects ink from the chamber, or a pre-heat mode wherein drive signals to the actuator heats ink in the chamber but does not eject ink from the chamber. The invention uses the drive signal to the bend actuator to generate heat to raise the temperature of the ink in the chamber, but controls the signal so that the actuator will not respond in a manner that will eject ink. After a brief pre-heat cycle, the drive circuitry can switch to normal operating mode and the bend actuators will eject ink for printing. With the ink temperature and viscosity within normal operating range, the print quality is not compromised.

REFERENCES:
patent: 4528571 (1985-07-01), Sweet
patent: 4568817 (1986-02-01), Leng et al.
patent: 4580147 (1986-04-01), DeYoung et al.
patent: 4612554 (1986-09-01), Poleshuk
patent: 4695854 (1987-09-01), Cruz-Uribe
patent: 4736212 (1988-04-01), Oda et al.
patent: 4994826 (1991-02-01), Tellier
patent: 5109234 (1992-04-01), Otis et al.
patent: 5408257 (1995-04-01), Hiramatsu et al.
patent: 5477256 (1995-12-01), Loyd et al.
patent: 5489927 (1996-02-01), Harmon
patent: 5555461 (1996-09-01), Ackerman
patent: 5600358 (1997-02-01), Baldwin et al.
patent: 5666141 (1997-09-01), Matoba et al.
patent: 5781212 (1998-07-01), Burr et al.
patent: 5812159 (1998-09-01), Anagnostopoulos et al.
patent: 5815173 (1998-09-01), Silverbrook
patent: 5907341 (1999-05-01), Miyazawa
patent: 5920331 (1999-07-01), Silverbrook
patent: 5975687 (1999-11-01), Powers
patent: 6003971 (1999-12-01), Hanks et al.
patent: 6234619 (2001-05-01), Kiritake
patent: 6239821 (2001-05-01), Silverbrook
patent: 6508546 (2003-01-01), Silverbrook
patent: 57472 (1982-08-01), None
patent: 367303 (1990-05-01), None
patent: 649745 (1998-01-01), None
patent: 771665 (2000-08-01), None
patent: WO 96/32273 (1996-10-01), None
patent: WO 00/64680 (2000-11-01), None
U.S. Appl. No. 10/291,472, filed Jul. 31, 2003, Silverbrook.
U.S. Appl. No. 09/425,191, filed Oct. 19, 1999, Silverbrook.

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