| abstract |
PROBLEM TO BE SOLVED: To provide a heat-sensitive recording material which has little change in recording sensitivity due to moisture change, in particular, a decrease in recording sensitivity in a low-humidity environment, and which is excellent in moisture-preserving storage of recorded parts and heat-resistant background fogging of unrecorded parts. is there. In a heat-sensitive recording material having a heat-sensitive recording layer containing a leuco dye, a colorant and an adhesive on at least one surface of a support, 4- (n-octyl) is used as a colorant in the heat-sensitive recording layer. Oxycarbonylamino) A salicylic acid zinc salt and 3,3′-diallyl-4,4′-dihydroxydiphenyl sulfone are contained, and a leuco dye is used in the form of composite particles formed by a hydrophobic resin. . [Selection figure] None |