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

1981-11-06

1983-11-29

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3SH, 355 57, G03G 1522

Patent

active

044178069

ABSTRACT:
In copying apparatus having a magnification ratio varying device, wherein a photosensitive member in motion is exposed to an optical image of an original by slit exposing to form an electrostatic latent image thereon and the original scanning velocity is varied in accordance with the magnification ratio selected, it is necessary to effect registration of the forward end of the image of an original with the leading end of a photosensitive sheet or a transfer-printing sheet. The above-mentioned registration is effected by delivering a copy sheet after lapse of a predetermined period of time following the production of a detection signal by a detector, the above-mentioned predetermined period of time being varied in conformity with the selected one of magnification ratios.

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
patent: 4192609 (1980-03-01), Tani et al.
patent: 4217052 (1980-08-01), Tani et al.

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