Apparatus for providing ink to an ink-jet print head and for com

Details Apparatus for providing ink to an ink-jet print head and for com Apparatus for providing ink to an ink-jet print head and for com

1995-10-31

1999-02-16

Metjahic, Safet

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347 7, B41J 2175, B41J 2195

Patent

active

058725849

ABSTRACT:
Apparatus for providing ink to an ink-jet print head in a print cartridge at substantially constant pressure and for compensating for air within the print cartridge. A flexible bag is maintained at atmospheric pressure within the print cartridge and actuates a pressure regulator also within the print cartridge. By expanding and contracting, the bag compensates for changes in pressure and temperature that occur while the pressure regulator is shut and that affect air entrapped within the print cartridge.

REFERENCES:
patent: 4475116 (1984-10-01), Sickling et al.
patent: 4509062 (1985-04-01), Low et al.
patent: 4739347 (1988-04-01), Ishikawa et al.
patent: 5040001 (1991-08-01), Dunn et al.
patent: 5409134 (1995-04-01), Cowger et al.
patent: 5453772 (1995-09-01), Aono et al.
patent: 5623290 (1997-04-01), Iida et al.

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