Patent ID: 6730462
Filing Date: 2004-05-04
Classification: G03C

Abstract:
A photothermographic element comprising a support having thereon at least one aqueous coatable light-sensitive imaging layer and at least one aqueous coatable light-absorbing layer comprising a barbituric acid arylidene filter dye and, in bleaching association therewith, an effective amount of a base precursor, wherein the barbituric acid arylidene filter dye is represented by the following formula: wherein D contains an aryl or heterocyclic moiety which may be substituted or fused; R represents hydrogen, a substituted or unsubstituted aryl, or a substituted or unsubstituted alkyl; and A is represented by the following structure: wherein R1 and R2 each individually represent a hydrogen, a substituted or unsubstituted alkyl; or a substituted or unsubstituted aryl, aralkyl, heterocyclic or cycloalkyl.