Barrier structure for thermal ink-jet printheads

Details Barrier structure for thermal ink-jet printheads Barrier structure for thermal ink-jet printheads

1987-06-02

1988-12-27

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 11, G01D 1518

Patent

active

047944102

ABSTRACT:
A three-sided barrier structure (22), comprising three walls (24a-c), is provided in conjunction with a resistor (10) used in a thermal ink-jet printhead. Placement of the structure less than about 25 .mu.m from the resistor results in longer resistor life and an improvement in the static bubble purging ability of the printhead.

REFERENCES:
patent: 4438191 (1984-03-01), Cloutier
patent: 4490728 (1984-12-01), Vaught
patent: 4502060 (1985-02-01), Rankin
patent: 4503444 (1985-03-01), Tacklind
patent: 4542389 (1985-09-01), Allen
patent: 4550326 (1985-10-01), Allen
patent: 4558333 (1985-12-01), Sugitani
patent: 4587534 (1986-05-01), Saito et al.
patent: 4590482 (1986-05-01), Hay
patent: 4611219 (1986-09-01), Sugitani
patent: 4675693 (1987-06-01), Yano
patent: 4723129 (1988-02-01), Endo
patent: 4725859 (1988-02-01), Shibata

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