| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermal recording body which is high in recording density, excellent in plasticizer resistance of a recording part and excellent in heat resistant ground fogging properties under high-temperature conditions.SOLUTION: There is provided a thermal recording body which has a thermal recording layer containing at least a leuco dye and a color developer on a support medium and contains a specific urea-urethane compound such as 4,4'-bis[(4-methyl-3-phenoxycarbonylaminophenyl)ureide]diphenylsulfone and N-[2-(3-phenylureide)phenyl]benzenesulfonamide as the color developer. The content of the specific urea-urethane compound is preferable to be 0.03 to 2.5 pts.mass based on 1 pt.mass of N-[2-(3-phenylureide)phenyl]benzenesulfonamide. |
