To reduce the generation of first coat fog even when being used or stored under the high temperature environment by containing 1-phenoxy-2-(2- naphthoxy)ethane and/or 1,3-bis(2-naphthoxy)propane in a recording layer.
1-phenoxy-2-(2-naphthoxy)ethane and/or 1,3-bis(2-naphthoxy) propane is contained in a recording layer of a heat-sensitive recording body. A coloration agent is a diphenylsulfone derivative represented by the formula I. In the formula, R1 and R2 represent respectively C1-C4 alkyl, C2-C4 alkenyl, C1-C4 alcoxyl, benzyl oxy or halogen atom. (m) represents 0-2 integers, (n) represents 1-3 integers, and (p) and (q) represent respectively 0-2 integers. The generation of first coat fog is reduced when being exposed under the high temperature condition by the arrangement.
| JPH09142018 | THERMOSENSITIVE RECORDING MATERIAL |
| JPS57117995 | HEAT-SENSITIVE RECORDING MATERIAL |
FURUKAWA HIROYUKI
TSUCHIDA TETSUO
SAITO TORANOSUKE
ISHIBASHI TAKASHI
SANKO CHEMICAL CO LTD
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