Patent ID: 6586170
Filing Date: 2003-07-01
Classification: G03C

Abstract:
A thermographic recording element having at least one image forming layer, said element comprising an organic silver salt, a reducing agent, and at least one of substituted alkene derivatives of formula (14): wherein W is an electron attractive group; D is an electron donative group selected from the group consisting of hydroxy groups, salts of hydroxy groups, mercapto groups, salts of mercapto groups, alkoxy groups, alkylthio groups, arylthio groups, amino groups, alkylamino groups, arylamino groups and phenyl groups having an electron donative group as a substituent; H is hydrogen; and two of said W groups form a cyclic structure which is substituted or unsubstituted and is selected from the group consisting of saturated carbocyclic, unsaturated carbocyclic, saturated heterocyclic, unsaturated heterocyclic and cyclic ketone, and wherein said W groups may have substituents.