Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1987-04-06
1988-05-17
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
346 11, G01D 1516
Patent
active
047454148
ABSTRACT:
An ink jet recorder is provided with a recovery device for preventing unsatisfactory ink discharge of a recording head, the recovery device being provided with ink suction means having a cap covering an ink discharge port, a vent valve for opening and closing the interior of the cap with respect to the atmosphere and a suction pump for producing a negative pressure in the cap, and wiping means having a cleaning blade adapted to be advanced and retracted relative to the ink discharge port. The cleaning blade is protruded when a motor effecting the sequence operation of the ink suction means revolves in one direction, and is stopped at its retracted position when the motor revolves in the opposite drection. A method of operating such ink jet recorder is characterized by operating the recovery device in one cycle sequence comprising the steps of bringing the cap into intimate contact with the ink discharge port, closing the vent valve, operating the suction pump, opening the vent valve, restoring the suction pump to its initial state, operating the suction pump, restoring the suction pump to its initial state, closing the vent valve, spacing the cap apart from the surface of the ink discharge port, opening the vent valve, and restoring the suction pump to its initial state.
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Nagoshi Shigeyasu
Ohnishi Toshiyuki
Okamura Shigeru
Canon Kabushiki Kaisha
Hartary Joseph W.
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