Process for the preparation of photographic color copies from co

Details Process for the preparation of photographic color copies from co Process for the preparation of photographic color copies from co

1991-01-15

1992-01-14

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 77, G03B 2780, G03B 2732

Patent

active

050814869

ABSTRACT:
Process wherein the slope of linear segments of color density curves of color copy material are affected in a controlled manner by homogeneous supplemental exposures. The quantities of light required for the supplemental exposures are determined by the analysis of the spectral density values of the copy master and by comparison with the color density curves of the copy material.

REFERENCES:
patent: 4092067 (1978-05-01), Grossmann
patent: 4101216 (1978-07-01), Grossmann
patent: 4279505 (1981-07-01), Ursprung et al.
patent: 4577961 (1986-03-01), Terashita
patent: 4681427 (1987-07-01), Plummer
patent: 4707120 (1987-11-01), Yamamoto
patent: 4783684 (1988-11-01), Rauh
patent: 4806986 (1989-02-01), Tokuda
patent: 4951084 (1990-08-01), von Stein et al.
patent: 4975737 (1990-12-01), Murooka et al.
Japanese Patent Document No. JP-A-60 182433, Sep. 1985.
European Search Report RS 85763 CH, Aug. 1990.

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