Photocopying – Including fiber optics
Patent
1985-10-03
1987-10-06
Braun, Fred L.
Photocopying
Including fiber optics
271 31, 271245, 271265, 355 14SH, G03G 2100, B65H 506
Patent
active
046979115
ABSTRACT:
An electrostatic copying apparatus conveys a copying paper sheet through a copying paper conveying passage thereby to form an image on one surface of the sheet, selectively introduces it into a copying paper returning passage, returns it to a copying paper re-sending device through the returning passage, and again feeds it into the paper conveying passage from the re-sending device so as to form an image on the other surface of the paper sheet. The paper re-sending device includes a copying paper receiving stand for receiving copying paper sheets and a delivery device disposed above the receiving stand. The delivery device is selectively maintained in a non-operating state in which it moves away from the copying paper received on the receiving stand, a first operating state in which it acts relatively weakly on the copying paper received on the receiving stand, and a second operating state at which it acts relatively strongly on the copying paper received on the receiving stand. A mechanism prevents feeding of papers in the superposed state, and a copying paper detecting mechanism, applicable to various types of electrostatic copying apparatus, permits effective detection of the arrival of a copying paper at the paper re-sending device.
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Kajita Hiroshi
Uehara Yoshiyuki
Ujino Koji
Braun Fred L.
Mita Industrial Co. Ltd.
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