Optical index and method for cameras and film processing

Details Optical index and method for cameras and film processing Optical index and method for cameras and film processing

1974-09-03

1976-06-08

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Methods

354106, 355 39, G03B 2732

Patent

active

039618501

ABSTRACT:
A small miniature camera employs as a primary operating mechanism a spring biased shutter bellcrank which is arranged so one of its arms or pawls operates a pivoted shutter blade and cooperates with the other pawl to conrol the film advance mechanism to prevent double exposure. Also, the disposition of the pawls is such that one of them may be employed to trigger impulse operated flash cubes in timed relationship with the shutter opened by the other pawl. To avoid complex indexing mechanisms within such a camera an optical indexing feature is provided which employs a separate light path to the edge of a film strip that is controlled by the shutter to mark the developed film strip with a reference mark for subsequent automatic film processing procedures.

REFERENCES:
patent: 1364462 (1921-01-01), Stout
patent: 1420440 (1922-06-01), Moorhouse
patent: 2226364 (1940-12-01), Anthony
patent: 2947217 (1960-08-01), McWhirter
patent: 3202045 (1965-08-01), Arsenault et al.
patent: 3752578 (1973-08-01), Allan

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