| 摘要 |
PURPOSE:To prevent the extinction or fading of a developed color image due to a plasticizer by forming a thermal recording material by providing a thermal color forming layer based on color formable substance and color developing substance and containing a specific triazine compound on a support. CONSTITUTION:Color formable substance, developing substance, a triazine compound represented by formula I(wherein R1, R2 and R3 are hydrogen, a 1 - 5C alkyl group, a 1 - 5C alkoxy group, halogen or an aralkyl group and X is oxygen or sulfur), if necessary, a heat-meltable compound and other additives are respectively separately dispersed along with a binder and water using a ball mill and subsequently mixed to prepare a coating solution for a thermal color forming layer. This coating solution is applied to a support such as paper or a plastic sheet in a coating amount of 5 - 40g/m<2> and dried to obtain a thermal recording material having the thermal color forming layer formed thereto. |
