Heat-developable light-sensitive materials

Details Heat-developable light-sensitive materials Heat-developable light-sensitive materials

G - Physics

03

C

96/124

G03C 1/34 (2006.01) G03C 1/498 (2006.01)

Patent

CA 1059812

ABSTRACT OF THE DISCLOSURE The present invention relates to a heat-developable light-sensitive material containing an improved light-sensitive silver halide catalyst and having an improved image stability to light after heat development with less heat fog. The invention comprises a support having therein or in one or more layers there- on (a) an organic silver salt, (b) a light-sensitive silver halide, and (c) a reducing agent, with the light-sensitive silver halide comprising the reaction product of a part of the organic silver salt and an N-halo compound represented by the following formula (I): Image wherein R1, R2, R3 and R4 each is a hydrogen atom; an alkyl group having 1 to 22 carbon atoms; a haloalkyl group having 1 to 22 carbon atoms; an amino group; a hydroxyalkyl group having 1 to 22 carbon atoms; an allyl group; a naphthyl group; a benzyl group; a Image group in which R5 is a hydrogen atom, a halogen atom, an alkyl group, an alkylthio group, an amino group or an alkylamino group; a benzyloxy group; an aryl group; a halo- aryl group; an alkylaryl group; an alkoxyaryl group; an -OR6 group in which R6 is a hydrogen atom, an alkyl group, an allyl group, an aryl group or an alkoxyaryl group; a Image group in which R7 and R8 each is a hydrogen atom, an alkyl group, an aryl group or an allyl group; a cyclohexyl group; a -CH2OR9 group in which R9 is a naphthyl group; or a -CH2R10 in which R10 is a morpholino group, a piperadino group or an alkylthio group; and X is a chlorine atom or a bromine atom.

231543

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