Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1990-11-05
1992-06-09
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346140R, B41J 205
Patent
active
051211300
ABSTRACT:
In a printhead assembly for a thermal ink jet printer there are a plurality of printheads mounted on a common heat sink, together with a heater and temperature controller for maintaining temperature of the printheads at an appropriate operating level. To prevent overheating of a printhead during periods of heavy use, the ink supply paths carrying ink to the printheads pass through, and receive heat from, the heat sink. The ink in each supply path then passes to the respective printhead via a tank, the position of which relative to the printhead establishes the ink pressure at the printhead discharge orifices. The tank is vented so that any air separating out from the ink can be removed. Capping means is provided to cap the ink discharge orifices when the printhead is idle and to prime/clean the printhead when required.
REFERENCES:
patent: 4454518 (1984-06-01), Bangs
patent: 4463359 (1984-07-01), Ayata et al.
patent: 4499478 (1985-02-01), Matsufuji
patent: 4543591 (1985-09-01), Terasawa
patent: 4577203 (1986-03-01), Kawamura
patent: 4600931 (1986-07-01), Terasawa
patent: 4658272 (1987-04-01), Toganoh
patent: 4692777 (1987-09-01), Hasumi
patent: 4727378 (1988-02-01), Le et al.
patent: 4734719 (1988-03-01), Suzuki
patent: 4739340 (1988-04-01), Terasawa
patent: 4853717 (1989-08-01), Harmon et al.
patent: 4896172 (1990-01-01), Nozawa
patent: 4929963 (1990-05-01), Balazar
patent: 4980702 (1990-12-01), Kneezez
patent: 5017941 (1991-05-01), Drake
Hempel George O.
Hermanson Herman A.
Markham Roger G.
Chittum Robert A.
Hartary Joseph W.
Xerox Corporation
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