Heat-sensitive recording material

摘要

A heat-sensitive recording material having excellent lightfastness and raw stock storability is disclosed. The material includes a support and a heat-sensitive recording layer provided on the support, and the heat-sensitive recording layer contains a diazo compound and a coupler. The coupler contains at least one species of pyrazolone compounds represented by the following formula (1): <CHEM> wherein Ar represents a phenyl group, a naphthyl group, or an aromatic heterocyclic group, any one of which may have a substituent bonded to the nucleus, said substituent may be a halogen atom, a cyano group, a trifluoromethyl group, an alkyl group, an aryl group, an alkoxycarbonyl group, a carbamoyl group, or a sulfamoyl group; R<1> and R<2> independently represent an alkyl group, an alkenyl group, or an aryl group, or R<1> and R<2> may be linked to each other so as to form a heterocycle.