Patent ID: 7153812

Claim:
A heat-sensitive recording material comprising, on a support, at least a heat-sensitive recording layer and a protective layer in that order, wherein the protective layer contains an acetylene glycol derivative represented by the following formula (1) in an amount of 2% or more by mass of solid content in the protective layer, a water-insoluble dispersion in an amount of 5% or more by mass of the solid content in the protective layer, and a water-insoluble organic material in a form of an emulsion in an amount of 5% or more by mass of the solid content in the protective layer: wherein in formula (1), R 1 to R 4 each independently represent a hydrogen atom, a branched, linear or cyclic substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms; R 5 to R 8 each independently represent a hydrogen atom or a methyl group; and n and m each independently represent an integer of 0 to 50, and wherein: (i) the water-insoluble dispersion comprises an inorganic pigment having a 50%-volume-average particle size of 0.10 to 5.00 μm, and the inorganic pigment is coated with at least one selected from the group consisting of higher fatty acids, metal salts of higher fatty acids, and higher alcohols; and/or (ii) the water-insoluble organic material comprises a lubricant which is in liquid form at ordinary temperature and the lubricant is selected from the group consisting of silicone oil, liquid paraffin and lanolin.