Ink cartridge with an unfelted foam and method of printing using

Details Ink cartridge with an unfelted foam and method of printing using Ink cartridge with an unfelted foam and method of printing using

1996-04-22

1999-04-06

Lund, Valerie

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347100, B41J 2175

Patent

active

058925279

ABSTRACT:
The invention is directed to an ink cartridge for use in printing an ink on a print medium with an electronic printer. The ink cartridge includes an ink disposed therein having a viscosity of between approximately 1.5 and 10 centipoise. An ink cartridge has an unfelted foam therein. The foam carries the ink and has a plurality of pores disposed substantially in communication with each other. The pores have an effective porosity of between approximately 60 and 90 pores per inch. The ink cartridge further has a printhead assembly disposed in fluid communication with the foam. The foam has an effective porosity, dependent on the viscosity of the ink, wherein ink is allowed to flow from the foam to the printhead assembly during periods of operation, and is substantially prevented from flowing from the printhead assembly during periods of inoperation.

REFERENCES:
patent: 4771295 (1988-09-01), Barker et al.
patent: 4929969 (1990-05-01), Morris
patent: 4931811 (1990-06-01), Cowger et al.
patent: 5047790 (1991-09-01), Cowger et al.
patent: 5182581 (1993-01-01), Kashimura et al.
patent: 5448275 (1995-09-01), Fong
patent: 5467117 (1995-11-01), Evans
patent: 5477255 (1995-12-01), Huth

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