Ink jet cartridge with membrane valve

Details Ink jet cartridge with membrane valve Ink jet cartridge with membrane valve

1996-12-06

2000-01-04

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

06010211&

ABSTRACT:
An ink cartridge for an ink jet printer has a housing containing an ink storage space. An upper portion of the ink storage space is closed off by a cup-shaped membrane. A pressure reduction valve is built into a housing bottom. The storage space communicates via the pressure reduction valve with a chamber which has an opening sealed by a rubber plug. During installation of the cartridge in the print head, the rubber plug is pierced by a hollow needle so that ink may pass from the chamber to the print head. The reduction valve ensures a predetermined underpressure in chamber. This facilitates reliable operation of the print head, even with fluctuating ambient temperature, and provides efficient space utilization within the housing.

REFERENCES:
patent: 4253103 (1981-02-01), Heinzl et al.
patent: 5359356 (1994-10-01), Ecklund
patent: 5524606 (1996-06-01), Le Strat
patent: 5746724 (1998-05-01), Powles et al.

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