Heat-sensitive and heat-transferable recording sheet
First Claim
1. A heat-sensitive and heat transferable recording sheet comprising a substrate, a heat-sensitive, color-forming layer provided on the front side of said substrate and a heat-transferable layer provided on the back side of said substrate, wherein the heat-transferable layer is composed essentially of an electron-donating colorless dye, an electon-accepting compound, a low-melting substance and a desensitizer which is a surfactant selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants and ampholytic surfactants, the amount of desensitizer being 0.05 to 5% by weight based on the total solid of the heat-transferable layer, the amount of the low-melting substance being 25% to 75% by weight based on the total solid of the heat-transferable layer.
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Accused Products
Abstract
In a heat-sensitive and heat-transferable recording sheet comprising a substrate, a heat-sensitive, color-forming layer provided on the front side of said substrate and a heat-transferable layer provided on the back side of said substrate, background fogging can be prevented by allowing the heat-transferable layer to be composed essentially of an electron-donating colorless dye, an electron-accepting compound, a low-melting substance and a desensitizer.
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Citations
10 Claims
- 1. A heat-sensitive and heat transferable recording sheet comprising a substrate, a heat-sensitive, color-forming layer provided on the front side of said substrate and a heat-transferable layer provided on the back side of said substrate, wherein the heat-transferable layer is composed essentially of an electron-donating colorless dye, an electon-accepting compound, a low-melting substance and a desensitizer which is a surfactant selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants and ampholytic surfactants, the amount of desensitizer being 0.05 to 5% by weight based on the total solid of the heat-transferable layer, the amount of the low-melting substance being 25% to 75% by weight based on the total solid of the heat-transferable layer.
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10. A heat-sensitive and heat-transferable recording sheet comprising a substrate, a heat-sensitive, color-forming layer provided on the front side of said substrate and a heat-transferable layer provided on the back side of said substrate, wherein the heat-transferable layer is composed essentially of an electron-donating colorless dye, an electron-accepting compound, a low-melting substance and a desensitizer, there being provided a pressure-sensitive ink layer on selected necessary places of the heat-transferable layer, the ink layer being composed essentially of an electron donating color former, an electron-accepting color developer and a wax and at least either of the color former and the color developer being contained in microcapsules.
Specification