| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a magnetic recording layer from peeling off, cracking, and fading colors, and avoid blocking between the magnetic recording layer and a thermal transfer receiving layer, and further improve the water resistance of the magnetic recording layer. <P>SOLUTION: The method of manufacturing a heat transfer magnetic recording sheet forms on the surface of a base sheet a magnetic recording layer containing water dispersion polyester resin having a glass transition temperature of 40-70°C at a ratio of 2-5 points against 10 points of a ferromagnetic material. On the other side of the base sheet, it forms a heat transfer receiving layer comprising polyester based urethane resin containing amorphous silica and a sulfone group and whose softening temperature is 130-140°C and whose lowest filming temperature is 0°C or lower, resin containing ethylene-unsaturated carboxylic acid whose minimum film forming temperature is 100-110°C, and resin containing alkali metal salt of ethylene-unsaturated carboxylic acid whose minimum film forming temperature is 70-90°C. This invention uses water dispersable polyester resin by dispersing in water soluble alcohol or in a solution obtained by mixing glycol and water. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
