Method and apparatus for venting an ink container

Details Method and apparatus for venting an ink container Method and apparatus for venting an ink container

1997-12-03

2000-06-13

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

060740507

ABSTRACT:
Disclosed is a replaceable ink container for providing ink to an ink-jet printing system. The ink container includes a pressure vessel for pressurizing ink. The ink container has a non-operating state and an operating state. Within the operating state, the pressure vessel has an internal gauge pressure maintained within an operating range so that pressurized ink is provided to the printing system. The ink container also includes a gas vent apparatus communicating between an inside surface of the pressure vessel and an outside atmosphere to allow continuous venting in both the operating and non-operating states. In one preferred embodiment the vent apparatus includes a porous member that is located between a pressurized region of the ink container and an outside atmosphere. This porous member provides a flow path for gas therethrough.

REFERENCES:
patent: 3371350 (1968-02-01), Sanderson et al.
patent: 4558326 (1985-12-01), Kimura et al.
patent: 4568954 (1986-02-01), Rosback
patent: 5233369 (1993-08-01), Carlotta et al.
patent: 5329294 (1994-07-01), Ontawar et al.
patent: 5515663 (1996-05-01), Allgeier et al.

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