Ink jet printer cartridge with inertially-driven air evacuation

Details Ink jet printer cartridge with inertially-driven air evacuation Ink jet printer cartridge with inertially-driven air evacuation

1998-05-28

2000-09-12

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

061167266

ABSTRACT:
An ink jet print cartridge with a body defining an ink chamber and an air outlet. A movable inertia element is connected to the body, and a compressor element is connected to the inertia element and the air outlet. When the pen is accelerated in a selected direction, such as along the carriage path of a printer during printing, the resulting motion of the inertia element operates the compressor to pump a small amount of air from the chamber. To avoid excessive pumping, which may expel ink unintentionally after the air has been expelled, a buoyant ink level detector in the cartridge may prevent air pumping when the ink is above a preselected level.

REFERENCES:
patent: 4788556 (1988-11-01), Hoisington et al.
patent: 5138332 (1992-08-01), Carlotta
patent: 5341162 (1994-08-01), Hermanson et al.
patent: 5394181 (1995-02-01), Braun
patent: 5621444 (1997-04-01), Beeson
patent: 5677718 (1997-10-01), Crawford et al.
patent: 5701148 (1997-12-01), Moynihan et al.
patent: 5812155 (1998-09-01), Seccombe

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