| abstract |
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising: n (a) a photosensitive silver halide; n (b) a non-photosensitive, reducible source of silver; n (c) a reducing agent for the non-photosensitive reducible silver source; and n (d) a binder; n wherein the reducing agent is a hydrazide redox-dye-releasing compound of the general formulae: ##STR1## wherein: D represents the chromophore of a thermally mobile dye; X represents a single bond or a divalent linking group; R 1 and R 2 independently represent an organic group; and n≧1. |