Photocopying – Contact printing – Light boxes
Patent
1991-10-15
1993-03-09
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355309, 355326, G03G 1500, G03G 1501
Patent
active
051929775
ABSTRACT:
An image forming apparatus includes: an original circulation unit for feeding originals placed on an original mounting unit one by one to an exposure site and after the exposure, returning the original to the original mounting unit; a copying unit for copying an original image to a recording sheet through exposure of the original at the exposure site; a first transport unit for feeding the recording sheet to a copy site; a first control unit for performing the original circulation by the original circulation unit for a set number of times to obtain the set number of copies; a second transport unit for feeding a specific sheet for each circulation of the originals; and a second control unit for controlling the first and second transport units to pre-feed the recording sheet and the specific sheet to be next supplied during a copy operation; wherein the second control unit does not perform the pre-feed of the recording sheet and the specific sheet during the first circulation of the originals by the original circulation unit, performs the pre-feed of the recording sheet and controls the first and second transport units to pre-feed the specific sheet, during a copy operation for the second and succeeding circulations of the originals.
REFERENCES:
patent: 4126390 (1978-11-01), Connin
patent: 5079598 (1992-01-01), Kaneko et al.
Adachi Hideki
Honjo Takeshi
Kanazawa Toshiya
Kaneko Tokuharu
Miyata Masanori
Canon Kabushiki Kaisha
Pendegrass Joan H.
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