摘要 |
PROBLEM TO BE SOLVED: To develop a heat sensitive recording material, with which a small ground fogging develops, which has a high sensitivity and which is excellent in the storage stability of a colored image. SOLUTION: In the heat sensitive recording material, which is formed by providing a heat sensitive color forming layer mainly including a normally colorless or light-colored color forming compound, a color developing compound, which forms color under heat in the color forming compound, and a sensitizer, a 5-hydroxyisophthalic acid is included as the color developing compound and a p-toluenesulfonic acid-β-phenoxy ethyl ester is included as the sensitizer. |