Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Patent
1998-06-11
1999-11-30
Le, N.
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
134500, B41J 217, F16K 3112
Patent
active
059929928
ABSTRACT:
A tower chamber of a thermal ink jet cartridge has an ink reservoir communicate therewith through a first passage, which is controlled by a spring biased valve. Ink exits from the tower chamber to nozzles in a printhead chip through a second passage. The valve has a pressure compliant bladder attached to its bottom surface in sealing relation therewith. A passage extends through the valve to provide continuous communication between the interior of the bladder and the reservoir. The bladder is formed of a material to continuously urge it to its relaxed state. When the back pressure in the tower chamber increases, ink flows into the bladder to expand it to fill the volume of the tower chamber. If an air bubble is trapped within the tower chamber, it will expand or shrink when subjected to a pressure variation and/or a temperature variation. The bladder will expand to fill the volume in the tower chamber when the air bubble shrinks and will contract when the air bubble expands so that the tower chamber accommodates the increased volume of the air bubble. The valve does not open to allow ink to flow into the tower chamber from the reservoir until after the bladder is fully expanded.
REFERENCES:
patent: 4270133 (1981-05-01), Shimazawa et al.
patent: 4677447 (1987-06-01), Nielsen
patent: 5039999 (1991-08-01), Winslow et al.
patent: 5270739 (1993-12-01), Kitani et al.
patent: 5426459 (1995-06-01), Kaplinsky
patent: 5479198 (1995-12-01), Kawano et al.
patent: 5505339 (1996-04-01), Cowger et al.
patent: 5515092 (1996-05-01), Swanson et al.
patent: 5519425 (1996-05-01), Dietl et al.
patent: 5537136 (1996-07-01), Brandon et al.
patent: 5555007 (1996-09-01), Ceschin et al.
patent: 5594483 (1997-01-01), Kaplinsky et al.
patent: 5600358 (1997-02-01), Baldwin et al.
patent: 5608437 (1997-03-01), Iwata et al.
Brady John A.
Le N.
Lexmark International Inc.
Nghiem Michael
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