Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1990-05-10
1992-01-28
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346140R, B41J 2165
Patent
active
050847120
ABSTRACT:
A head tending apparatus for an ink jet printing system with at least one ink jet being disclosed. The apparatus includes a solvent supply system for spraying solvent on the faces of the ink jets and in the jet openings and a brush for scrubbing the ink jet faces during and immediately after the spraying process. Solvent vapors enter the jets and deprime the jets so that the ink remaining in the jets drains out of the jets back to the ink reservoir allowing solvent vapors to penetrate the jets to the reservoir. Resultantly, when the jets are next primed with ink, the jets are substantially free of air bubbles. Head tending is normally performed when the printer is shut down, or prior to the priming of the ink jets.
REFERENCES:
patent: 4296418 (1981-10-01), Yamazaki
patent: 4306245 (1981-12-01), Kasogayama
patent: 4540997 (1985-09-01), Biggs
patent: 4968994 (1990-11-01), Hock
Hock Allan G.
McMahon Kathryn
Sousa John G.
Winey Calvin M.
Hartary Joseph W.
Howtek, Inc.
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