Feeding and electrostatic holding originals in a copying machine

Details Feeding and electrostatic holding originals in a copying machine Feeding and electrostatic holding originals in a copying machine

1977-08-29

1978-09-12

Hix, L. T.

Photocopying

Projection printing and copying cameras

Detailed holder for original

361234, 271 3, 271DIG3, 271236, 271272, G03B 2762, B65H 908, B65H 1102

Patent

active

041133803

ABSTRACT:
An original to be copied is fed onto the copy table of the copying machine. The receipt of the original to be copied triggers the establishment of an electrostatic holding field which holds the original flat on the copy table during the exposure operation. Performance of the exposure operation triggers disestablishment of the electrostatic holding field. The polarity of the electrostatic holding field is successively reversed.

REFERENCES:
patent: 3448356 (1969-06-01), Testone
patent: 3480364 (1969-11-01), Barnett
patent: 3538829 (1970-11-01), Munnich et al.

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