Variable rate spring ink pressure regulator for a thermal ink je

Details Variable rate spring ink pressure regulator for a thermal ink je Variable rate spring ink pressure regulator for a thermal ink je

1992-08-12

1994-06-28

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

053251199

ABSTRACT:
An ink pressure regulator system disposed inside of a flexible ink bag reservoir for a replaceable or refillable computer driven printer ink cartridge comprises a pair of parallel piston plates and a spring system therebetween having a variable spring function relating force to displacement of the spring such that the regulator collapses to a substantially flat shape under decreasing amounts of added spring collapsing force as the plates approach each other to allow substantially complete evacuation of ink from the bag.

REFERENCES:
patent: 4412232 (1983-10-01), Weber et al.
patent: 4422084 (1983-12-01), Saito
patent: 4503443 (1985-03-01), Dagna et al.
patent: 4992802 (1991-02-01), Dion et al.

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