| abstract |
A heat developable light-sensitive material comprising a support and a heat developable light-sensitive layer formed thereon can produce images of high density and less fog in a short period of time and has excellent aging stability. The light-sensitive material contains as a base precursor at least one compound selected from the group consisting of compounds represented by formula [I]: <IMAGE> [I] wherein R1 and R2 individually represent hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, aralkyl, heterocyclic group, or -CO2M wherein M represents hydrogen, alkali metal or H.Bx, and R1 and R2 can be joined together to form a ring; R3 represents hydrogen atom, alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, or heterocyclic group; x is equal to 1 when B represents a monoacidic base and equal to 1/2 when B represents a diacidic base; and C* represents an asymmetric carbon atom. |