| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-sensitive body of which the image keeping quality and the heat-resistant base color stability are improved. SOLUTION: For this heat-sensitive recording body, 4,4'-bis(4- phenylsulfamoylphenylureide)diphenyl methane is used as a color-developer. In this case, the compound has a sufficient color-developability to make a dye precursor develop a color. Also, compared to a phynol based color-developer or the like which has been conventionally used, the heat-sensitive recording body shows an excellent performance in the image keeping quality of a recorded part and the heat-resistant base color stability of a white paper part. |
