Photocopying – Contact printing – Light boxes
Patent
1990-01-30
1991-08-20
Grimley, A. T.
Photocopying
Contact printing
Light boxes
271 11, 271107, 271256, 355204, 355308, 355309, G03G 2100
Patent
active
050418793
ABSTRACT:
A sheet supplying device for supplying an uppermost sheet of a stack of sheets in a sheet cassette used in an image forming apparatus includes suction cups movable into and out of contact with the uppermost sheet in the sheet cassette, an evacuator for developing a vacuum in the suction cups to enable the suction cups to attract the uppermost sheet, a moving member for upwardly and downwardly moving the suction cups to pick up the sheet from the sheet cassette, a sheet feeding member for feeding the sheet from the moving member along a sheet feed path, and a control system for judging on the basis of a detection signal from each sensor for detecting an image forming error provided in the image forming apparatus whether the error occurs during the sheet supplying operation, and when judging that the image forming error occurs during a sheet supplying operation, the control unit ceasing the sheet supplying operation and controlling the driving of at least one of the suction cups, the evacuator, moving member and the sheet feeding member so that at least one of those members carries out a predetermined operation selected from the series of operations to be performed by at least one of the members.
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Akao Michitoshi
Hayashi Takayuki
Kimura Hiroaki
Nakata Takashi
Sakakibara Kenji
Brother Kogyo Kabushiki Kaisha
Grimley A. T.
Hoffman Sandra L.
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