| 摘要 |
<p>A heat developable photographic element for producing a dye enhanced silver image comprises, in reactive association, (a) photosensitive silver halide, (b) an image-forming combination comprising (i) an organic silver salt oxidizing agent, with (ii) an organic reducing agent, (c) a resorcinol, dye-forming coupler that forms a dye with the oxidized form of the reducing agent and (d) a binder. After imagewise exposure, a dye enhanced silver image can be produced in such a material by merely heating the material. The combination of the described organic silver salt oxidizing agent with the organic reducing agent and the resorcinol, dye-forming coupler can be useful in a thermographic material. Other addenda employed in heat developable photographic materials, such as sensitizing dyes, can be useful with the heat developable materials containing the resorcinol, dye-forming coupler.</p> |
