Patent ID: 6028029
Filing Date: 2000-02-22
Classification: B41M,G03C

Abstract:
A heat-sensitive recording material comprising a substrate, a heat-sensitive recording layer disposed on the substrate and a protective layer disposed on the heat-sensitive recording layer, wherein the protective layer comprises a pigment which contains particles having a volume average particle diameter of 0.300 .mu.m or less in a portion of 50% by volume of the total volume of the particles as measured by a laser diffraction method and which contains 3% or less of particles having a diameter of 1.0 .mu.m or more in a total amount of particles and the surface of the protective layer has a central line value Ra of a surface roughness of 0.3 .mu.m or less in a frequency component having a roughness pitch of 2 to 10 .mu.m of the surface roughness in of the surface roughness in the entire frequency range.