摘要:
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising:
(a) a photosensitive silver halide; (b) a non-photosensitive, reducible source of silver; (c) a reducing agent for the non-photosensitive reducible silver source; and (d) a binder; wherein the reducing agent is a hydrazide redox-dye-releasing compound of the general formulae:
R 1 -[-C(O)-NH-NH-SO 2 -X-D] n or [D-X-C(O)-NH-NH-SO 2 -] n -R 2
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.
摘要:
A photothermographic element comprising a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer comprising: (a) a photosensitive silver halide; (b) a non-photosensitive, reducible source of silver; (c) a reducing agent for the non-photosensitive reducible silver source; and (d) a binder; wherein the reducing agent is a hydrazide redox-dye-releasing compound of the general formulae: R 1 -[-C(O)-NH-NH-SO 2 -X-D] n or [D-X-C(O)-NH-NH-SO 2 -] n -R 2 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.