Photocopying – Contact printing – Light boxes
Patent
1990-11-09
1992-03-24
Grimley, A. T.
Photocopying
Contact printing
Light boxes
271265, 355308, G03G 2100
Patent
active
050992910
ABSTRACT:
An image forming apparatus which has a contact glass, an original transporting part for transporting a sheet of original onto the contact glass, an optical exposure system for scanning the sheet of original placed on the contact glass by reciprocating movement below the contact glass, an image forming part for forming an image of the original obtained by the optical exposure system on a recording sheet, and a part for supplying the recording sheet to the image forming part. The original transporting part comprises an original storing part for storing sheets of original; means for transporting a sheet of original from the original storing part onto the contact glass; means for detecting the passage of the sheet of original, provided in the sheet transporting means; and means for outputting an original-exchange completion signal to the image forming apparatus after the passage detecting means detects the passage of the sheet of original and before the sheet transporting means positions the sheet of original onto a predetermined portion of said contact glass. The recording-sheet supply part comprises means for judging whether a next sheet of original to be transported to the contact glass exists; means for transporting a recording sheet to the image forming part; and means for controlling the transporting means whereby the recording sheet transporting means is begun before the optical exposure system starts to return, if a next sheet of original exists.
REFERENCES:
patent: 4332462 (1982-06-01), Yagasaki et al.
patent: 4939554 (1990-07-01), Hirabayashi et al.
Fujioka Tadashi
Tsuji Hiroyuki
Ujino Koji
Yamada Masami
Yoshioka Yoshiki
Grimley A. T.
Horgen Christopher
Mita Industrial Co. Ltd.
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