Heat transfer sheet

A heat transfer sheet for heat-sensitive printing by means of thermal heads, comprising a base film, a hot melt ink layer formed on one surface of said base film, and a mat layer interposed between the base film and the ink layer,

• said hot melt ink layer comprising an ink composition having a melt viscosity of from 10 cps to 60 cps at 100.degree. C. thereby to effect filling of the printed areas of a transferable paper during printing.

A heat transfer sheet for heat-sensitive printing by means of thermal heads, comprising a base film, an antisticking layer formed on the thermal head-contacting surface of said base film, and a hot melt ink layer formed on the opposite surface of said base film,

• said antisticking layer comprising a composition selected from the group consisting of (a) compositions containing (i) a first thermoplastic resin having an OH or COOH group, selected from the group consisting of acrylpolyol, urethane having an OH group, a vinyl chloride-vinyl acetate copolymer, and polyesterpolyol, (ii) a compound having at least 2 amino groups, diisocyanate or triisocyanate, (iii) a second thermoplastic resin consisting of vinylidene fluoride-ethylene tetrafluoride copolymer, and (iv) a material which acts as a heat releasing agent or lubricant, wherein (i), (ii), (iii) and (iv) are different, and
• (b) compositions containing (i) a silicone-modified resin selected from the group consisting of silicone-modified acrylic resin, silicone-modified polyester resin, and silicone-modified urethane resin, and (ii) a heat releasing agent or lubricant,
• said hot melt ink layer comprising an ink composition having a melt viscosity of from 10 cps to 60 cps at 100.degree. C. thereby to effect filling of the printed areas of a transferable paper during printing.