Additive color printing method and apparatus

Details Additive color printing method and apparatus Additive color printing method and apparatus

1976-07-09

1977-09-27

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 77, G03B 2778, G03B 2732

Patent

active

040508080

ABSTRACT:
Illumination for printing, including that reflected from a color negative, is sensed as to spectral content by a plurality of light-responsive sensors of mutually-exclusive spectral characteristics. That response is employed to control the spectral characteristic of the illumination for printing, as may be desired. The illumination for printing is homogeneously integrated as to intensity and spectral content prior to impinging upon the color negative by a hollow housing having both specularly and non-specularly reflective surfaces.

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patent: 3322025 (1967-05-01), Dauser
patent: 3359424 (1967-12-01), Dreyfoos
patent: 3492070 (1970-01-01), Zahn
patent: 3647296 (1972-03-01), Long
patent: 3672768 (1972-06-01), Schaub et al.
patent: 3819275 (1974-06-01), Aimi et al.
patent: 3887279 (1975-06-01), Rubin
patent: 3927938 (1975-12-01), Seigenji

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