| 摘要 |
PURPOSE:To obtain a thermal recording material excellent in thermal response property and picture storability by adding bis(3-allyl-4-hydroxyphenyl)sulfone, together with a specific compound, to the thermal recording material. CONSTITUTION:Bis(3-allyl-4-hydroxyphenyl)sulfone as a developer, together with a compound of the formula, where R is a substituted or non-substituted aralkyl group, are added to a thermal recording material to obtain thermal recording materials which are excellent in thermal respondency and picture storability. The preferred amount of these compounds to be added is 5wt% or more for each on the basis of a dye precursor, more preferably 10-600wt%, and particularly preferably 20-500wt%. By adding a heat-meltable substance, e.g., stearic acid amide, N-hydroxymethyl stearic acid amide, etc., having a melting point of 80-160 deg., to the recording material, the thermal response property of the recording material can be more raised. |
