| abstract |
The present invention provides a heat-sensitive recording material having excellent color developability, image portion storage stability, and blank paper portion storage stability. A colorless or light leuco dye is used as a color developing substance, and 4-allyloxy-4'-hydroxydiphenyl sulfone and N- (p-toluenesulfonyl) -N '-(3-p-toluene are used as a color developing substance. A thermosensitive recording material comprising a thermosensitive coloring layer containing sulfonyloxyphenyl) urea in a mass ratio of 25:75 to 70:30 on a support. [Selection figure] None |