Patent ID: 7846870
Filing Date: 2010-12-07
Classification: B41M

Abstract:
1. A heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer, the heat-sensitive recording layer containing a leuco dye, a developer, and a copolymer resin emulsion, the copolymer resin emulsion comprising a copolymer resin, the copolymer resin (1) containing (I) (meth)acrylonitrile, and (ii) one or more vinyl monomers copolymerizable with (meth)acrylonitrile, (2) having a solubility parameter of 12.0 or higher, and (3) having a glass transition temperature exceeding 30° C. but equal to or less than 100° C., wherein the above mentioned vinyl monomers (ii) include at least a carboxyl group-containing vinyl monomer, and said at least a carboxyl group-containing vinyl monomer is 1 to 10 mass % of the total mass of the copolymer resin.