| 摘要 |
PROBLEM TO BE SOLVED: To obtain superior light fastness and prevent adhesion and sticking of scum by adding an ultraviolet ray absorbent to an undercoat layer and/or a heat-sensitive coloration layer, adding an ultraviolet ray-shutting agent to the heat-sensitive coloration layer and/or a protecting layer, and adding a fluorescent dye to the protecting layer. SOLUTION: An ultrasonic ray absorbent composed of a benzotriazol compound is regulated along with a binder and a filler thereby preparing an undercoat application solution. The application solution is applied and dried on a supporting body, whereby an undercoat layer is formed. A dye and a developer are mixed with a binder and a dispersion solution, and an additive is added, thereby obtaining an application solution. The application solution is applied and dried on the undercoat layer, thereby forming a heat-sensitive coloration layer. Moreover, a protecting layer application solution containing an ultraviolet ray-shutting agent of a baked substance of particles in a double layer structure in which an insoluble cerium compound is coated with unshaped silica, and a fluorescent dye, etc., is prepared, applied and dried on the heat-sensitive coloration layer, so that a protecting layer is formed. Accordingly, high light fastness is obtained and adhesion or sticking of scum is prevented, thus making the recording body look good as a white paper. |
