Patent ID: 6875726

Claim:
A heat-sensitive recording material which comprises (a) a support (S), (b2) a heat-sensitive recording layer (TG) containing an electron-donating compound and an electron-accepting compound and formed on at least one side of the support (S) and an adhesive layer (EB) comprising an electron beam-cured resin and formed on the heat-sensitive recording layer (TG), or (b3) an adhesive layer (EB) comprising an electron beam-cured resin and formed on at least one side of the support (S) and a heat-sensitive recording layer (TG) containing an electron-donating compound and an electron-accepting compound and formed on the adhesive layer (EB); and (c) a protective layer (OC) comprising a water-soluble resin and/or a water-dispersible resin, and optionally, (d) an intermediate layer (ML) comprising a water-soluble resin and/or a water-dispersible resin and formed between the heat-sensitive recording layer (TG) and the adhesive layer (EB), the protective layer (OC) being the outermost layer provided by being formed on a smooth-surfaced substrate and removing the smooth-surfaced substrate, the smooth-surfaced substrate being 0.05 to 0.20 μm in root-mean-square average of roughness (JIS B0601-1982) as determined by an interference microscope (JIS B 0652-1973 ), the protective layer surface having a distinctness of image (according to JIS K 7105-1981) of at least 75% (slit width 2 mm), and the adhesive layer containing a pigment having an average particle size of 0.2 to 3 μm.