Air vent for an ink supply cartridge in a thermal ink-jet printe

Details Air vent for an ink supply cartridge in a thermal ink-jet printe Air vent for an ink supply cartridge in a thermal ink-jet printe

1992-05-19

1994-02-22

Fuller, Benjamin R.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 2175

Patent

active

052892123

ABSTRACT:
A cartridge for supplying liquid ink to a thermal ink-jet printing apparatus includes a chamber having a ventilation port and an outlet port. A medium occupies at least a portion of the chamber, for retaining liquid ink therein at a predetermined back pressure. An open-ended conduit defines a passageway extending from the ventilation port to a portion of the chamber substantially devoid of liquid ink, to prevent leakage of liquid ink from the cartridge.

REFERENCES:
patent: 4390574 (1983-06-01), Wood
patent: 4463359 (1984-07-01), Ayata et al.
patent: 4638337 (1987-01-01), Torpey et al.
patent: 4771295 (1988-09-01), Baker et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 4791438 (1988-12-01), Hanson et al.
patent: 4806032 (1989-02-01), Gragg et al.
patent: 4929969 (1990-05-01), Morris
patent: 5182581 (1993-01-01), Kashimura et al.
patent: 5216450 (1993-06-01), Koitabashi et al.
"Plotter Print Module"; IBM Technical Disclosure Bulletin; vol. 32, No. 2; Jul. 1989; p. 439.
Diconix (TM) 701 Ink Supply Cartridge.

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