| abstract |
(57) [Summary] [Problem] To provide a heat-sensitive recording material having excellent image storability and excellent background stain resistance. SOLUTION: In a heat-sensitive recording medium provided on a support with a heat-sensitive coloring layer containing a colorless or light-colored basic colorless dye and an organic developer as main components, Contains 4'-bis {(2- (phenylcarbamoylamino) phenyl) sulfonylaminocarbonylamino} diphenylmethane or 4,4'-bis {(4- (phenylcarbamoylamino) phenyl) sulfonylaminocarbonylamino} diphenylmethane. |