Heat-developable color light-sensitive material

Details Heat-developable color light-sensitive material Heat-developable color light-sensitive material

1990-05-25

1991-09-24

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430203, 430216, 430219, 430607, 430617, 430955, G03C 554, G03C 134

Patent

active

050513486

ABSTRACT:
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): ##STR1## wherein the total number of carbon atoms included in R.sup.1 and R.sup.2 is at least 10, and R.sup.1 and R.sup.2 each represents a group represented by formula (III) or formula (IV): ##STR2## wherein R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15, R.sup.16, R.sup.17 and R.sup.18 each represents a substituent, provided that R.sup.1 and R.sup.2 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 R.sup.14 and R.sup.18, the Hammett's constants (.sigma..sub.m value) of R.sup.15 and R.sup.17, and the Hammett'constant (.sigma..sub.p value) of R.sup.16 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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