| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-sensitive recording body which is excellent in moisture resistance and heat resistance and has high recording sensitivity and high dot reproducibility.SOLUTION: There is provided a heat-sensitive recording body provided with a heat-sensitive recording layer containing at least a leuco dye, a sensitizer, a color developer, an antioxidant and an additive on a support, where the heat-sensitive recording layer contains 10 to 32 mass% of at least one of 1,2-bis(3-methylphenoxy)ethane or 1,2-diphenoxyethane as the sensitizer, 10 to 28 mas% of 2,4'-dihydroxydiphenylsulfone as the color developer, 0.1 to 10 mass% of 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane as the antioxidant and 3 to 15 mass% of α-{4-[(hydroxyphenyl)sulfonyl]phenyl}-ω-hydroxypoly(polymerization degree n=1 to 7)(oxyethyleneoxyethyleneoxy-p-phenylenesulfonyl-p-phenylene) as the additive, based on the total solid content of the heat-sensitive recording layer. |
