| 摘要 |
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 (i) a silver salt oxidizing agent and (ii) a reducing agent which is a 2,6-dichloro or 2,6-dibromo-4-sulfonamidophenol such as the corresponding benzenesulfonamidophenol, 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 combination. The combination can be in a diffusion transfer, photothermographic element.
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