Color correction head

Details Color correction head Color correction head

1986-02-20

1987-03-31

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 35, G03B 2732, G03B 2752

Patent

active

046539026

ABSTRACT:
In a photographic color correction head filters are movable across a light path by DC motors. The motors drive cams via high reduction gearboxes and the filters are carried on supports urged against the cams by springs. The filters remain in their selected position when the motors are switched off due to internal friction in the gearboxes.

REFERENCES:
patent: 2217405 (1940-10-01), Hanna et al.
patent: 2518947 (1950-08-01), Simmon
patent: 2921499 (1960-01-01), Weisglass et al.
patent: 3800070 (1974-03-01), Barbieri
patent: 3883243 (1975-05-01), Weisglass et al.
patent: 4319834 (1982-03-01), Terrill
patent: 4375918 (1983-03-01), Isono et al.

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