THERMAL RECORDING MATERIAL

摘要

A thermal recording material which has high sensitivity in color development and a high whiteness of the background and is excellent in image retention and heat resistance. The thermal recording material contains a dihydroxydiphenyl sulfone compound represented by general formula (I) as an organic color developer and 3-di-n-pentylamino-6-methyl-7-anilinofluoran as a colorless basic dye. (In the formula, R1 and R2 each represents C1-8 alkyl, alkenyl, or halogeno; and p and q each is an integer of 0 to 3.)