| 摘要 |
PROBLEM TO BE SOLVED: To make color development density high, eliminate skin color development due to solvent and prevent the occurrence of color fading or color elimination in a recording picture unit by containing a dye precursor, a specified aminobenzen sulfonamide derivative, a specified multi-value phenolic compound and a high-class aliphatic acid metallic salt in a recording layer. SOLUTION: A recording layer, containing at least one kind of aminobenzen sulfonamide derivative, shown by a formula I, at least one kind of multi-value phenolic compound, shown by a formula II, and high-class aliphatic acid metallic salt, is formed on the supporting body of a heat sensitive recording body. In the formulas, X means the atom of oxygen or the atom of sulfur, R means non-replaced or replaced phenyl group, naphthyl group, alalkyl group, alkyl group having the number of carbon of 1-6, cycloalkyl group having the number of carbon of 3-6 of low-class alkenyl group having the number of carbon of 2-6. Z means low-class alkyl group having the number of carbon of 1-6 and shows electron attracting property. (n) is an integer of 0-4, (p) is an integer of 1-5. Provided, n+p>=5. |
