Colour print material with variable gradation

Details Colour print material with variable gradation Colour print material with variable gradation

1994-11-01

1996-08-20

Letscher, Geraldine

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430506, 430508, 430544, 430957, 430555, 430557, 430944, G03C 146

Patent

active

055478182

ABSTRACT:
A color photographic print material with the usual three different sensitized silver halide emulsion layers and at least one silver halide emulsion layer containing no color coupler (control layer) with a spectral sensitization range outside the sensitization range of the image-producing layers, wherein the control layer contains a substance A, which, on negative development of the silver halide emulsion used in the control layer (control emulsion), releases a compound B which alters the gradation of the image-producing layers, is usable as a print material with variable gradation.

REFERENCES:
patent: 5021332 (1991-06-01), Bergthaller et al.
patent: 5035987 (1991-07-01), Odenwalder et al.
patent: 5051345 (1991-09-01), Haraga et al.
patent: 5057405 (1991-10-01), Shiba et al.
patent: 5270157 (1993-12-01), Bell et al.
patent: 5360703 (1994-11-01), Chang et al.
patent: 5372920 (1994-12-01), Edwards

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