Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1990-09-28
1991-07-30
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 77, G03B 2786, G03B 2732
Patent
active
050363514
ABSTRACT:
A exposure control process and a photographic color copying apparatus make possible the optimal adaptation of the evaluation of a copy master to the varying spectral sensitivities of different copy materials, without having to change the measuring filters. The measuring light components of each of the basic colors are detected by a wavelength selective detection device in at least two closely adjacent spectral ranges and the resultant measured values combined into prevailing color extract values.
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Frick Beat
Kraft Walter
Gretag Systems
Wintercorn Richard A.
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