| 摘要 |
PROBLEM TO BE SOLVED: To improve storage stability of a recording image and to especially improve plasticizer resistance and water resistance by providing a heat-sensitive color developing layer contg. a leuco dye and a developer comprising a specified phenolic compd. as main ingredients on a substrate and forming a heat-sensitive recording material. SOLUTION: A heat-sensitive color developing layer contg. a leuco dye and a developer for developing color of the leuco dye by heating is provided on a substrate to form a heat-sensitive recording material. In this case, as the developer, a compd. of formula I (wherein R is a hydrocarbon group or a hydrogen atom; X is a hydrocarbon group, an alkoxy group, a halogen atom or a hydrogen atom; n is an integer of 1-3; m is an integer of 0-2; and p is an integer of 0-2) is used or a phenolic compd. of formula II (wherein R is a hydrocarbon group or a hydrogen atom; X is a hydrocarbon group, an alkoxy group, a halogen atom or a hydrogen atom; n is an integer of 1-3; m is an integer of 0-2; and p is an integer of 1-11) may be used and those compd. wherein R is hydrogen atom are pref. from color developing characteristics. |
