Abstract: Disclosed is a heat-sensitive recording material comprising (a) a transparent film, (b) a heat-sensitive recording layer formed on one side of the transparent film, and containing an electron-donating compound, an electron-accepting compound, and a binder, (c) a protective layer formed on the heat-sensitive recording layer, and containing an aqueous resin as a primary component; and (d) a backside layer formed on the other side of the transparent film, and containing a pigment and a binder; the heat-sensitive recording material containing in the backside layer spherical resin particles having a mean volume particle diameter of 2 to 15 ?m in an amount of 0.2 to 5.0 mass % of the backside layer.

Abstract: Disclosed is a heat-sensitive recording material comprising (a) a transparent film, (b) a heat-sensitive recording layer formed on one side of the transparent film, and containing an electron-donating compound, an electron-accepting compound, and a binder, (c) a protective layer formed on the heat-sensitive recording layer, and containing an aqueous resin as a primary component; and (d) a backside layer formed on the other side of the transparent film, and containing a pigment and a binder; the heat-sensitive recording material containing in the backside layer spherical resin particles having a mean volume particle diameter of 2 to 15 ?m in an amount of 0.2 to 5.0 mass % of the backside layer.

Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive coloring layer formed on the support, wherein the heat-sensitive coloring layer contains either composite particles in which a leuco dye is contained in solid resin particles or microcapsules in which a leuco dye and a hydrophobic organic solvent are contained, the heat-sensitive coloring layer optionally contains other leuco dye which forms a color different from the color formed by the leuco dye contained in the composite particles or in the microcapsules, and the developer is N-p-toluenesulfonyl-N′-3-(p-toluenesulfonyloxy)phenylurea.

Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive coloring layer formed on the support, wherein

Abstract: An improved pressure sensitive recording sheet capable of causing an improved color development which comprises a substrate and a layer containing microcapsules each containing an electron-donative chromogenic material and a hydrophobic medium containing benzyl toluene being formed on the substrate.The pressure sensitive recording sheet exhibits an excellent color-developing property and provides clear color images of high density.

Abstract: A microcapsule-containing ink composition for flexographic printing containing microcapsules, an adhesive and an ink medium, the composition being characterized in that the adhesive includes a polymer composed of a methacrylate or acrylate singly or as its main component and having an average molecular weight of 3000 to 50,000.

Abstract: In a microencapsulation process which comprises polycondensating a hydrophilic melamine-formaldehyde resin type precondensate in water or in a hydrophilic medium containing an emulsifier to form capsule wall film around a hydrophobic core material to obtain microcapsules, the process which is characterized in that the emulsifier is a copolymer of (1) an unsaturated monobasic acid monomer of at least 80 mole %, (2) a hydrophobic monomer and (3) a hydrophilic monomer other than a carboxylic acid.