Color copying method and apparatus

Details Color copying method and apparatus Color copying method and apparatus

1987-11-20

1988-11-08

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 77, G03B 2772, G03B 2776, G03B 2732

Patent

active

047836849

ABSTRACT:
A color copier has a first station for scanning a colored original in each of the primary colors so as to measure the proportions of such colors in the original. The measurements are sent to a computer which calculates the exposure time in each primary color for reproduction of the original. The copier further has a second station for reproducing the original on any one of several different color copy materials. The spectral sensitivities of the copy materials differ for any given primary color so that the copy materials define a family of sensitivity curves in each primary color. An illuminating device is movable between the two stations and generates the light used for scanning as well as for copying. Thus, the scanning light and copy light have the same spectral composition. The illuminating device carries a separate source of light in each primary color and the emission spectrum of each source projects no higher than the lowest curve of the family of sensitivity curves for the corresponding color.

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patent: 4566786 (1986-01-01), Fursich et al.
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