G - Physics – 03 – C
Patent
G - Physics
03
C
96/219, 96/99
G03C 1/34 (2006.01) G03C 1/498 (2006.01) G03C 7/30 (2006.01)
Patent
CA 1104863
Abstract of the Disclosure A photographic material, especially a photothermo- graphic material, for producing a dye-enhanced silver image comprising, in reactive association, (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of a certain 3-amino-1,2,4-mercaptotriazole derivative with (ii) a phenylenediamine or aminophenol silver halide developing agent, (c) a compound that contains a coupling moiety and which forms a dye upon reaction with the oxidized form of the developing agent, such as upon heating the element to a temperature above about 80°C, (d) a binder, and (e) an antifoggant concentration of a thiazoline thione antifoggant, provides developed dye-enhanced silver images without the need for processing solutions or baths and provides reduced fog upon processing. An image can be developed in this material by merely heating the material to moderately elevated temperatures. Other addenda employed in heat developable photographic materials, such as sensitizing dyes, can be employed with the photographic materials described. - 1 -
285105
Eastman Kodak Company
Gowling Lafleur Henderson Llp
LandOfFree
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