PURPOSE: To furnish a heat-sensitive transfer film making it possible to improve a sticking phenomenon at the time of heat-sensitive transfer and to make efficient the heat-sensitive transfer by a thermal printer, by a construction wherein a coat containing an acryl-silicone graft polymer is provided on the surface of the heat-sensitive transfer film whereon it contacts with a heating head.

CONSTITUTION: A coating containing an acryl-silicon graft polymer is applied and dried on the surface of a heat transfer film whereon it contacts with a heating head, so as to provide a coat thereon. A polymer of acrylic ester or methacrylate ester can be mentioned as a component of an acrylic chain of the acryl-silicon graft polymer, and a substance having an alkyl polysiloxane structure, such as dimethyl polysiloxane, can be mentioned as a component of a silicon chain. Although the copolymerization ratio between the acrylic component and the silicon component is not defined in particular, the more ratio of the acrylic component is advisable in terms of the hardness of a coat and the adhesion thereof, and concretely, a coat in the ratio of about 6W9.5:4W0.5 is preferable.