Photothermographic elements

Details Photothermographic elements Photothermographic elements

C - Chemistry, Metallurgy

07

D

96/99, 260/236.1

C07D 265/38 (2006.01) C07D 279/30 (2006.01) G03C 1/40 (2006.01) G03C 8/10 (2006.01) G03C 8/40 (2006.01)

Patent

CA 1314542

ABSTRACT PHOTOTHERMOGRAPHIC ELEMENTS A photothermographic element comprising a support bearing an image forming system comprising: (a) a photosensitive silver halide (b) an organic silver compound (c) a polymer binder and (d) a reducing agent for the organic silver compound, characterised in that the reducing agent comprises a redox-dye-releasing compound of the general formula: R - ? - A D in which: R represents an organic group which may be oxidatively cleaved to a thermally immobile form, A represents a bond or a divalent linking group having a chain consisting of up to 12 atoms, which is linked to the carbonyl group via a carbon atom or an oxygen atom, and D represents the chromophore of a thermally mobile dye.

603219

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