Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1995-12-22
1998-05-05
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430502, 430505, 430543, 430567, 430570, 430572, 430584, 430599, 430600, 430642, G03C 146
Patent
active
057472300
ABSTRACT:
A photographic silver halide color print material comprising a support and yellow, magenta and cyan dye image forming layer units comprising at least one silver halide emulsion layer and at least one dye image-forming coupler which material contains a total silver halide coating weight less than 150 mg/m.sup.2 (as silver) and wherein the grain size (average volume in cubic microns) of the emulsion(s) is less than 1.0 (.mu.m).sup.3 in the yellow image forming unit and less than 0.125 (.mu.m).sup.3 in the magenta image forming unit and wherein each layer unit of the material has a dye image-forming efficiency (E) under conditions of use of above 30 where: ##EQU1## wherein the emulsion(s) of the cyan dye image forming layer unit have a silver coating weight less than 50 mg/m.sup.2, and an average grain size less than 0.064 (.mu.m).sup.3 and comprise means for increasing the speed of the cyan dye image forming unit emulsion(s) to a level sufficient to provide a cyan image having the desired neutral color balance relationship with the yellow and magenta images formed on exposure and processing.
REFERENCES:
patent: 3674490 (1972-07-01), Matejec
patent: 3989526 (1976-11-01), Bissonette
patent: 4022616 (1977-05-01), Barr et al.
patent: 4146397 (1979-03-01), Shimamura et al.
patent: 4471049 (1984-09-01), King et al.
patent: 4816290 (1989-03-01), Heki et al.
patent: 5063143 (1991-11-01), Hirose et al.
patent: 5591568 (1997-01-01), Bagchi et al.
Introduction to Photographic Theory, The Silver Halide Process, by B. H. Carroll, G. C. Higgins and T. H. James, John Wiley & Sons (1980, reprinted in 1986) pp. 27-32.
Research Disclosure, vol. 366, No. 03, Oct., 1994.
Bee John Arthur
Evans Gareth
Kempster John Kenneth Charles
Eastman Kodak Company
Letscher Geraldine
Rice Edith A.
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