| 摘要 |
A heat-developable color light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder, a dye providing compound capable of releasing or forming a diffusible dye in correspondence or counter-correspondence to a reaction in which silver halide is reduced to silver, a basic metal salt compound which is sparingly soluble in water, and at least one acid precursor compound represented by formula (I) or formula (II): <IMAGE> (I) <IMAGE> (II) wherein the total number of carbon atoms included in R1 and R2 is at least 10, and R1 and R2 each represents a group represented by formula (III) or formula (IV): <IMAGE> (III) <IMAGE> (IV) wherein R11, R12, R13, R14, R15, R16, R17 and R18 each represents a substituent, provided that R1 and R2 are selected such that the sum of the aliphatic Taft's constants ( sigma * value) of the substituents represented by formula (III), the Taft's constants ( sigma -value) of R14 and R18, the Hammett's constants ( sigma m value) of R15 and R17, and the Hammett'constant ( sigma p value) of R16 is 0 or more. The heat-developable color light-sensitive material is excellent in preservability before imagewise exposure and provides color images having a high maximum density and a low level of stain.
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