| 摘要 |
PURPOSE:To ease the handling and to improve the thermal response by using a developer in which bisphenol-A and paraphenyl-phenol are combined with each other in the ratio 10:1-1:1 by weight. CONSTITUTION:A heat-sensitive layer the main components of which are leuco dyestuff, developer in which bisphenol-A and paraphenyl phenol are combined with each other in te ratio 10:1-1:1, and water soluble binder is formed on the base material to make up a high sensitive thermal recording material. For the leuco dyestuff, leuco bodies such as triphenyl methane system, fluoren system and phenothiazine system ones or the like are suitable. For the water soluble binder, polyvinyl alcohol, starch or its denatured substance, methyl cellulose can be used. Also white pigments such as talc, clay, silica and titanium oxide, wax and dispersant can be added to the thermal recording layer. |
