Ink-jet cartridge venting

Details Ink-jet cartridge venting Ink-jet cartridge venting

1994-11-22

1997-08-26

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347 29, B41J 2175, B41J 2165

Patent

active

056615108

ABSTRACT:
A cartridge for an ink-jet printer includes a nozzle plate having nozzles therein. A region around the nozzles is sealed when a maintenance cap is moved into contact with a surface of the cartridge surrounding the nozzle plate. Vent passages are provided in the cartridge body for venting the sealed region to the atmosphere. The vent passages are formed as grooves in a surface of the cartridge body, the open sides of the grooves being closed by an adhesive preform which attaches a tab circuit to the surface. One end of each passage vents to the atmosphere at a second surface of the cartridge body underneath a portion of the tab circuit which is not adhesively attached to the second surface. A second end of each vent passage extends into a region of the first surface that is not covered by the adhesive preform and tab circuit so that the vent passages communicate with the sealed region formed when the cap is moved into contact with the cartridge.

REFERENCES:
patent: 4847637 (1989-07-01), Watanabe et al.
patent: 5027134 (1991-06-01), Harmon et al.
patent: 5146243 (1992-09-01), English et al.
patent: 5155497 (1992-10-01), Martin et al.
patent: 5216449 (1993-06-01), English

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