| 摘要 |
PURPOSE:To improve a sticking phenomenon at the time of heat transfer, by a method wherein a coating material comprising and alkoxysilane hydrolyzate as a main constituent is applied to the surface of a thermal transfer film which surface is brought into contact with a thermal head, and the applied coating material is hardened so that the coated film has a specified thickness. CONSTITUTION:A coating material comprising an alkoxysilane hydrolyzate as a main constituent is applied to abase film, and is hardened, preferably, by heating in the presence of acetic acid, sodium acetate or the like. The hardening treatment is usually conducted at an atmospheric temperature of 60-150 deg.C for a period of time of 10sec-1min, depending on the thickness of the coated film. Since the hardened coated film has a high hardness, it is liable to crack or peel off if it is too thick. Therefore, the amount of the coating material applied is adjusted so that the coated film has a coating weight of not more than 2g/m<2>. When colloidal silica is jointly used, elasticity of the coated film after hardening is enhanced so that the coated film is less liable to crack. In the heat transfer film thus obtained, the sticking phenomenon is prevented from occurring, and the coated film will not peel off. |
