Device for correcting positive film for photocomposition

Details Device for correcting positive film for photocomposition Device for correcting positive film for photocomposition

1976-06-21

1977-08-23

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 45, 355 77, G03B 1328, G03B 2732, G03B 2752

Patent

active

040436608

ABSTRACT:
A device for correcting positive film for photocomposition using a photographic method which comprises first projecting an original film onto a final film with the defective area rendered unexposed, then projecting the correct replacement material onto the unexposed portion of the final film, both projection methods using an optical system with a movable mirror.

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patent: 2740324 (1956-04-01), Cahill
patent: 2744443 (1956-05-01), Higonnet et al.
patent: 2752818 (1956-07-01), Gehring
patent: 3185026 (1965-05-01), Carlson et al.
patent: 3315561 (1967-04-01), Garcia Boutigue
patent: 3438708 (1969-04-01), Thorne-Thomsen
patent: 3642370 (1972-02-01), Meredith et al.
patent: 3802773 (1974-04-01), Schneider
patent: 3890045 (1975-06-01), Bernstein et al.

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