| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-sensitive recording material which is excellent in image preservability, especially, image light fastness in the heat-sensitive recording material in which a heat-sensitive recording layer containing a diazonium salt compound and coupler compound is provided. SOLUTION: This heat-sensitive recording material is provided with the heat sensitive recording layer which contains at least the diazonium salt compound and the coupler compound causing a coupling reaction with the diazonium salt compound on a supporting body. In this material, the heat-sensitive layer contains compounds which are represented by a formula 1, wherein R1 , R2 and R3 are each independently an alkyl group, an aryl group, and an acyl group which may have substituents, and the R1 and R2 , R2 and R3 , and R3 and R1 each may form a ring. Furthermore, in the formula 1, it is desirable that at least one of the R1 , R2 and R3 is the aryl group. |
