Tri-color additive color printing head and enlarger

Details Tri-color additive color printing head and enlarger Tri-color additive color printing head and enlarger

1984-05-02

1985-11-19

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 35, 355 71, G03B 2732, G03B 2752

Patent

active

045538328

ABSTRACT:
A single light source illuminates an additive filter holder having three color filters of equal area arranged beside each other in a plane. Two filters are rectangular and lie within a rectangular whose diagonal defines a circle. The third filter has identical halves to opposite sides of the rectangular major sides within the circle. Color is adjusted by sliding screens over the filters.

REFERENCES:
patent: 2780155 (1957-02-01), Debrie
patent: 3684371 (1972-08-01), Weisglass et al.

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