| 摘要 |
PURPOSE:To obtain a thermosensitive recording material which is stable significantly with respect to light and heat by arranging sodium erythorbate into a thermal layer in a thermal recording material which is provided with the thermal recording layer having a colorless or light-color leuco dye and acid substance allowing the leuco dye to form color when heated as color forming component. CONSTITUTION:In a thermal recording material which has leuco dye and acid substance allowing the dye to form color when heated, sodium erythorbate is contained into a thermal layer. The sodium erythorbate herein used is known as oxidation inhibitor for foods and also water-soluble. Therefore, this substance can be adsorbed on the surface of particles of the thermal layer generally produced by applying and drying a water paint on a support and provides a more effective prevention of decoloring due to light and thermal oxidation as compared with the non-water-soluble oxidation inhibitor ordinarily used for plastic fiber, petroleum product and the like. |
