| 摘要 |
PROBLEM TO BE SOLVED: To enhance a synthetic performance such as the color concentration, light resistance and antipolluting properties of a recorded matter and the storage stability or the like of a thermal transferring sheet by a method wherein a dyestuff includes as thermal transferring pyridone-azo-based dyestuff represented by a specified structural formula. SOLUTION: A dyestuff layer includes a thermal transferring pyridone-azo- based dyestuff represented by a formula. In the formula, R represents a total 4-6C substituted or non-substituted alkoxy alkyl group, X and Y represent respectively and independently a halogen atom atom selected from the group consisting of Br, F and Cl. Thus, by introdcing two or more halogen atoms, X and Y selected from the group consisting of Br, F and Cl in a benzene ring bound with an azo group and especially by introducing the total 4-6C alkoxy alkyl group R in the nitrogen atom on a pyridone-ring, the favorable performance of the storage stability of the thermal transferring sheet is revealed. The resultant dyestuff is excellent in the color density, light resistance and stain-proofing properties of a recorded matter and also in a total performance. |
