Use of 2,6-dihalo-4-substituted sulfonamidophenol reducing...

Details Use of 2,6-dihalo-4-substituted sulfonamidophenol reducing... Use of 2,6-dihalo-4-substituted sulfonamidophenol reducing...

G - Physics

03

C

96/219, 96/24, 9

G03C 11/12 (2006.01) G03C 1/498 (2006.01)

Patent

CA 1078656

Abstract of the Disclosure In a photothermographic element, composition or process for producing developed images employing processing with heat, a combination comprising (a) photographic silver halide in association with (b) an oxidation-reduction image forming combination comprising (1) a silver salt oxidizing agent and (11) a reducing agent which is a 2,6-dichloro or 2,6-dibromo- 4-sulfonamidophenol such as the corresponding benzenesulfon- amidophenol, and (c) a four equivalent color-forming coupler, and (d) a polymeric binder, provides an image in color. After imagewise exposure of the photothermographic element or composition, a color image can be developed by heating the photothermographic element or composition containing this com- bination. The combination can be in a diffusion transfer, photothermographic element. - 1 -

264873

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