HEAT SENSITIVE RECORDING BODY

PROBLEM TO BE SOLVED: To provide a heat sensitive recording body, high in sensitivity of color development, good in resistance to heat, not producing powder due to aging, restrained in the deterioration of coloring density upon printing after preserving a part whereat color is not developed yet for a long period of time and prevented in the generation of adhesion of scum or sticking. SOLUTION: A heat sensitive recording body is provided with an intermediate layer and a heat sensitive color developing layer, containing the principal constituents of colorless or thin colored basic colorless dye and organic color developing agent, which are provided on a bearer. In such a heat sensitive recording body, the intermediate layer contains hollow polymer grain, having an opening unit obtained by cutting a part of hollow polymer particle, and a heat sensitive color developing layer contains 4-hydroxy-4'-n- propoxydiphenylsulfone and the derivative of sulfone amide shown by a formula (in the formula, Z shows the lower alkyl group having 1-6C or electron attractive group, (n) is an integer of 0-2).