| 摘要 |
PROBLEM TO BE SOLVED: To prevent a developed color image from being discolored by NOx by a method wherein a fluoran compound represented by a specified formula and a fluoran compound represented by another specified formula are included. SOLUTION: This pressure-sensitive recording material includes a fluoran compound represented by formula I and a fluoran compound represented by formula II. In formulae I and II, R<1> and R<2> are independently a 1-8C straight- chain or branched alkyl group, a 5-8C cycloalkyl group, a 1-8C alkoxyalkyl group or a p-tolyl group. Further, a ring may well be formed by binding R<1> and R<2> together. R<3> is hydrogen, or a 1-4C alkyl group. R<4> and R<5> are independently hydrogen, a 1-4C alkyl group or a phenyl group or a benzyl group which may be substituted by a halogen, under the condition that R<4> and R<5> are not simultaneously hydrogen. |
