The present invention provides a heat-sensitive recording material
comprising a substrate; and at least two heat-sensitive recording layers
provided on the substrate, the heat-sensitive recording layers including
microcapsules encapsulating an electron-donating dye precursor, and an
electron-accepting compound, which reacts with the electron-donating dye
precursor to develop a color and is disposed outside of the
microcapsules, wherein the microcapsules include at least two kinds of
microcapsules having different glass transition temperatures. A
difference between each of the glass transition temperatures of the at
least two microcapsules having different glass transition temperatures is
preferably in a range from 20.degree. C. to 70.degree. C. According to
the invention, a heat-sensitive recording material, which is superior in
the reproduction of the gradation of an image and enables recording at
high density, is obtained.