Method of controlling copying machine operation

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer

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Details

355 4, 355 14SH, 355 14TR, G03G 1516, G03G 1501

Patent

active

046627391

ABSTRACT:
In a copying apparatus which comprises a plurality of rotatable photosensitive members and an image transfer belt rotatably movable in synchronism with the photosensitive members and in which visible image formed on the photosensitive members are transferred onto a transfer paper carried by the transfer belt, a pair of sensors are arranged around the transfer belt which has a pair of marks thereon and an initiation and a termination of a preprocess are performed prior to a copying process on the basis of detections of these marks by the sensors.

REFERENCES:
patent: 4531828 (1985-07-01), Hoshino

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