Heat-sensitive recording composition
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsYousuke Toda, Kousuke Shibagaki, Kyohei Miyanaga
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Abstract
The present invention provides a heat-sensitive recording material which has improved thermal responsiveness and improved stability of the print part and the background in comparison to conventional heat-sensitive recording materials that contain a non-phenolic compound as a color developer. The present invention provides a heat-sensitive recording composition which contains a color former, a color developer and a stabilizer, wherein: N-[2-(3-phenylureido)phenyl] benzenesulfonamide or N-(p-toluenesulfonyl)-N′-(3-p-toluenesulfonyloxyphenyl) urea is contained as the color developer, and 1,3-diphenyl urea is contained as the stabilizer.
Claims9
A heat-sensitive recording material comprising:
- a support;
- and
- a heat-sensitive recording layer on the support, wherein the heat-sensitive recording layer is made of a heat-sensitive recording composition comprising a color former, a color developer, and a stabilizer, wherein the composition comprises N-[2-(3-phenylureido)phenyl] benzenesulfonamide or N-(p-toluenesulfonyl)-N′-(3-p-toluenesulfonyloxyphenyl)urea as the color developer, and 1,3-diphenylurea as the stabilizer, 3-dibutylamino-6-methyl-7-anilinofluoran as the color former, and wherein a mass ratio of a content of the color developer to a content of the 1,3-diphenylurea is 3:2 to 3:1.
Dependencies are inferred from the claim text.