| 摘要 |
PROBLEM TO BE SOLVED: To provide the superior hot stamp recording properties and improve water resistance by containing casein and epoxy modified silicone oil in a heat- sensitive recording layer. SOLUTION: Casein and epoxy improved silicone oil are used combinedly in a heat-sensitive recording layer. The usage of casein is approximately 3-50wt.% to the total solid amount of the heat-sensitive layer, preferably approximately 5-30wt.%, and the usage of epoxy modified silicone oil is 0.01-5.0wt.%, preferably 0.02-2.0wt.%. Epoxy groups of approximately 0.1-20 molar % are introduced into side chains and terminals of polysiloxane such as dimethyl polysiloxane, diethyl polysiloxane or diphenyl polysiloxane in epoxy modified silicone oil. Particularly a coated surface is uniformized by emulsifying the average particle diameter to 10μm or less by an emulsifier. |
