Apparatus for selecting originals for copying on the basis of im

Details Apparatus for selecting originals for copying on the basis of im Apparatus for selecting originals for copying on the basis of im

1973-09-07

1976-09-21

Gonzales, John

Photocopying

Projection printing and copying cameras

355 41, 355133, 356203, G03B 2700

Patent

active

039815790

ABSTRACT:
The density of neighboring portions of each of a plurality of successive originals is monitored. An original is copied only if the original is comprised of at least one pair of monitored neighboring portions differing from each other in density by an amount exceeding a reference value.

REFERENCES:
patent: 3520609 (1970-07-01), Lion
patent: 3635555 (1972-01-01), Kurahashi
patent: 3690765 (1972-09-01), Rickard
patent: 3709613 (1973-01-01), Zahn
patent: 3734611 (1973-05-01), Knapp et al.
patent: 3743416 (1973-07-01), Widmer et al.

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