Photocopying – Including fiber optics
Patent
1987-02-02
1988-08-09
Grimley, A. T.
Photocopying
Including fiber optics
355142, 355 14SH, 271227, 271259, G03G 1500, B65H 502
Patent
active
047631600
ABSTRACT:
An apparatus for handling an original in a copy machine comprises: feed rollers and a flat face belt for feeding a sheet original; feed-out rollers for feeding out the original after the exposure; two sensors for sensing the front edge and rear edge of the original; clutches and a drive motor for driving the feed and feed-out rollers and belt; and a control unit or a microcomputer. The two sensors output detection signals indicative of the front and rear edges of the original to the microcomputer, which computes the feed-out timing of the original and the feed timing of an original to be fed next in response to those signals, thereby controlling the feed operation of the original in accordance with the size of the original. Thus, the total copy time can be minimized and the original jam can be also promptly detected irrespective of the size of the original. When an original formed with punched holes is used, delay units or timers are further provided for inhibiting the sensing operation of the sensor for a predetermined period after the front edge of the original was sensed, thereby preventing a malfunction of the sensor.
REFERENCES:
patent: 4066255 (1978-01-01), Bradbury
patent: 4082263 (1978-04-01), Baumberger
patent: 4307957 (1981-12-01), Kitagawa et al.
patent: 4332462 (1982-06-01), Yagasaki et al.
patent: 4422751 (1983-12-01), Komiya et al.
patent: 4456369 (1984-06-01), Sato
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IBM Technical Disclosure Bulletin, vol. 24, No. 18, Jun. 1981, Kida, M., "Method for Ignoring a Punched Hole in Original Document".
Canon Kabushiki Kaisha
Grimley A. T.
Pendegrass J.
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