Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1994-04-18
1997-04-29
Barlow, Jr., John E.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 30, B41J 2165
Patent
active
056253850
ABSTRACT:
An color ink jet recording apparatus with a plural recording heads, comprises: a plural caps corresponding to the recording heads; a plural cap opening/closing drive units; a single negative pressure suction unit communicating with the respective caps through ink suction passages; a plural passage communicate/interrupt units for communicating or interrupting the respective ink suction passages; a plural air open/interrupt units; a capping control unit for controlling each passage communicate and interrupt unit to communicate the ink suction passage corresponding to the recording head to be capped and controlling the corresponding air open/interrupt unit to open the corresponding air opening passage, and in this state, for controlling the corresponding cap opening/closing drive unit to cover the nozzle surface of the recording head to be capped with its corresponding cap; and jet performance recovery control unit, after the nozzle surface of the recording head to be capped is covered by the capping control unit, for controlling the air open/interrupt unit to interrupt the air opening passage and controlling the passage communicate/interrupt unit to interrupt the ink suction passages corresponding to other recording heads than the recording head whose jet performance is to be recovered, and for controlling the negative pressure suction unit.
REFERENCES:
patent: 4952947 (1990-08-01), Kyoshima
patent: 5018884 (1991-05-01), Hirano et al.
patent: 5086305 (1992-02-01), Terasawa
Barlow Jr. John E.
Fuji 'Xerox Co., Ltd.
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