| 摘要 |
PROBLEM TO BE SOLVED: To provide a transparent thermal recording material which brings about a pure-black color tone of a colored image particularly in a halftone in an environment of high temperature or high humidity and which is improved in the shelf stability of density. SOLUTION: A thermal recording material is formed by providing a thermal recording layer constituted of a colorless or high-colored leuco dye, a developer making the leuco dye colored in heating and a binder resin as an bonding agent on a transparent substrate, and by providing an adjacent layer containing a resin on at least one of the upper and lower sides of the thermal recording layer, as occasion demands. The present transparent thermal recording material is constituted by making the thermal recording layer contain the leuco dye to be colored in red, and also by making at least one of the thermal recording layer and the adjacent layer contain a polyvinyl butyral resin of which the degree of polymerization is 200-500. |
