Color correcting device for color printing light source

Details Color correcting device for color printing light source Color correcting device for color printing light source

1982-06-01

1985-01-08

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 88, G03B 2780

Patent

active

044924577

ABSTRACT:
A color correcting device for a color printing light source comprising light receivers arranged so as to be able to receive a light from a light source having passed through light adjusting color filters and a servo-device which compares an output from the light receiver with a reference value and can determine the amount of entrance into the light path of the light adjusting color filter by the compared output, whereby the color of the light source can be always properly corrected without re-adjusting the reference value in spite of the dirtying or deterioration of the light adjusting color filters and the replacement or deterioration of the light source lamp.

REFERENCES:
patent: 3867029 (1975-02-01), Weinert
patent: 4192605 (1980-03-01), Fergg et al.
patent: 4408873 (1983-10-01), Labrum

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