Provided is a thermal recording material that is excellent in thermal
response and retainability of an image portion and which generates fewer
residues adhering to the thermal head of a thermal printer.The thermal
recording material having a thermal recording layer comprising a
generally colorless or light-colored electron-donating dye precursor and
an electron-accepting developer that reacts under heat to cause said dye
precursor to form a color, said thermal recording layer containing a
specific diphenylsulfone derivative, a specific amide derivative and a
specific fluorane derivative, wherein the weight ratio of the specific
diphenylsulfone derivative above and the specific amide derivative above
is 2/1 to 1/2.