| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-sensitive recording material devised to improve sensitivity of a heat-sensitive sheet by using a developer having a high thermal sensitivity. SOLUTION: The heat-sensitive recording material comprises at least a leuco dye and a developer of the leuco dye. As the developer, 4,4'-dihydroxy-3,3',5,5'- tetramethyldiphenyl-methane is blended. |
