A thermosensitive recording material having high whiteness and resistance to color formation under high temperature, high humidity conditions has a thermosensitive colored image-forming layer formed on a substrate sheet and includes a dye precursor, a binder and a color developing agent including a compound of the formula (I) and optionally a compound of the formula (V).
1
R
1
, R
3
=unsubstituted or methyl or chlorine-substituted aryl group, R
2
=at least C
3
divalent organic group, R
4
=at least C
3
alkyl, aralkyl or aryloxyalkyl group.
具有高白度和耐高温高湿条件下色彩形成的热敏记录材料,在基材片上形成了热敏着色成像层,包括
染料前体、粘合剂和颜色发展剂,其中包括式(I)的化合物和可选的式(V)的化合物。1R1、R3=未取代或甲基或
氯取代的芳基基团,R2=至少C3的二价有机基团,R4=至少C3的烷基、芳基烷基或芳氧基烷基团。