Method for effecting registration for a copying apparatus

Details Method for effecting registration for a copying apparatus Method for effecting registration for a copying apparatus

1978-03-14

1980-03-11

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Methods

355 3SH, 355 8, 355 57, G03B 2732, G03G 1528

Patent

active

041926099

ABSTRACT:
The copying apparatus has a magnification ratio varying device, and a photosensitive member, in motion, is exposed to an optical image of an original, by slit exposing, to form an electrostatic latent image thereon. The scanning velocity of the original is effected in accordance with the selected magnification ratio. Registration of the forward or leading end of the image of an original with the leading end of a photosensitive sheet or a transfer-printing sheet is effected by delivering a copy sheet, such as a photosensitive sheet or a transfer-printing sheet, to the photosensitive member only after the lapse of a predetermined period of time following production of a detection signal by a detection device cooperable with the leading edge of the original. The predetermined period of time is varied in conformity to the selected magnification ratio.

REFERENCES:
patent: 3834805 (1974-09-01), Pichierri
patent: 4009957 (1977-03-01), Suzuki et al.
patent: 4026647 (1977-05-01), Kanno et al.
patent: 4033692 (1977-07-01), O'Connell

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