Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Patent
1995-04-20
1997-01-14
Bobb, Alrick
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
347 93, B41J 2175
Patent
active
055944833
ABSTRACT:
A thermal ink-jet pen cartridge including an ink reservoir for maintaining ink under negative pressure. The ink reservoir is coupled to the printhead via a discharge port. To prevent air bubbles from entering the reservoir via the discharge port and printhead after ink is expelled via the thermal process, a check valve is placed in the fluid path between the ink reservoir and the printhead at the discharge port. The check valve is a mesh having a very small mesh opening sufficient to prevent air bubbles from passing through under normal pressures. The check valve also serves the function of a particulate filter to prevent contamination of the printhead by particles from the ink reservoir.
REFERENCES:
patent: 4095237 (1978-06-01), Amberntsson
patent: 4149172 (1979-04-01), Heinzl et al.
patent: 4183031 (1980-01-01), Kyser et al.
patent: 4272773 (1981-06-01), Halasz
patent: 4422084 (1983-12-01), Saito
patent: 4571599 (1986-02-01), Rezanka
patent: 4673955 (1987-06-01), Ameyama et al.
patent: 4714937 (1987-12-01), Kaplinsky
patent: 4931811 (1990-06-01), Cowger et al.
patent: 5040002 (1991-08-01), Pollacek et al.
patent: 5155502 (1992-10-01), Kimura et al.
patent: 5280300 (1994-01-01), Fong et al.
patent: 5426459 (1995-06-01), Kaplinsky
patent: 5464578 (1995-11-01), Salter et al.
Kaplinsky George T.
Swanson David W.
Bobb Alrick
Hallacher Craig A.
Hewlett--Packard Company
LandOfFree
Ink-jet cartridge with ink filtration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink-jet cartridge with ink filtration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink-jet cartridge with ink filtration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1391861