Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1992-03-30
1993-08-17
Baxter, Janet C.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430506, 430567, 430569, 430637, G03C 1035, G03C 146
Patent
active
052368173
ABSTRACT:
A multicolor photographic element capable of forming a viewable reversal dye image is disclosed comprising a support and, coated on the support, a blue recording yellow dye image forming layer unit, a green recording magenta dye image forming layer unit, and a red recording cyan dye image forming layer unit, each of the dye image forming layer units containing at least one silver halide emulsion layer comprised of a vehicle and silver halide grains having (1) a halide content of from 0 to 5 mole percent chloride, from 0.1 to 20 mole percent iodide, and from 80 to 99.9 mole percent bromide, based on total silver. At least one of the silver halide emulsion layers in one of the layer units positioned to receive exposing radiation prior to at least one of the green or red recording layer units is a tabular grain emulsion layer in which a polyalkylene oxide block copolymer is present selected to allow the preparation of tabular grains having a mean thickness of less than 0.3 .mu.m and a mean tabularity of greater than 25, accounting for greater than 97 percent of the total projected area of grains having an equivalent circular diameter of at least 0.2 .mu.m.
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Research Disclosure, vol. 232, Aug. 1983, Item 23212.
Baloga John D.
Cohen Jacob I.
DEMauriac Richard A.
Hawks, III George H.
Kam-Ng Mamie
Baxter Janet C.
Eastman Kodak Company
Thomas Carl O.
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