| 摘要 |
A thermosensitive recording material comprising a substrate and a thermosensitive coloring layer, formed thereon, which comprises a leuco dye; at least one color developer selected from the group consisting of 1,5-bis(4-hydroxyphenylthio)-3-oxapentane and 1,7-bis(4-hydroxyphenylthio)-3,5-dioxapentane; and an isocyanuric acid derivative of the formula (I): <IMAGE> (I) wherein R1, R3, R4 and R5 independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms, provided that at least either R1 or R3 represents an alkyl group having 1 to 4 carbon atoms; and R2 represents -CnH2nOH in which n is an integer of 0 to 4.
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