Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1976-09-09
1977-11-08
Griffin, Donald A.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 71, G03B 2776
Patent
active
040573451
ABSTRACT:
Three component beams are taken off three sides of a single filament light source, individually attenuated, colored in respective ones of the three additive primary colors red, blue and green and recombined to form three superimposed component images of the filament light source. The three superimposed images of the filament light source are positioned at the light source location for the printing camera. Adjacent the light source the three component beams pass through three apertures spaced from the source far enough to be located at a position where the light field is uniform. Three superimposed real images of these apertures are formed down-path of the superimposed images of the filament light source and coincident with the plane of the transparency to be printed. The three superimposed real images of the filament light source are first brought into exact register and then, independently thereof, the three superimposed real images of the aperture are brought into exact register, utilizing first and second independent adjustment expedients.
REFERENCES:
patent: 2411694 (1946-11-01), Place
patent: 3229569 (1966-01-01), Frost et al.
patent: 3482914 (1969-12-01), Misener
patent: 3510221 (1970-05-01), Berman
patent: 3533693 (1970-10-01), Balint
patent: 3640619 (1972-02-01), Huber
patent: 3649120 (1972-03-01), Pfeifer
patent: 3667841 (1972-06-01), Ross
patent: 3818216 (1974-06-01), Larraburu
Ehrenhaft Franz F.
Rosin Seymour
Anamorphic Ltd.
Griffin Donald A.
Striker Michael J.
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