Abstract: Provided is an image receptor for a thermal transfer ink, including a plastic film, and a coating layer which is formed on the plastic film and composed of a polyester resin of which glass transition point is 40.degree. to 6.0.degree. C., the amount of the coating layer when dried being 0.08 to 0.8 g/m.sup.2. This image receptor is adaptable for a tape printer and assures good fixing property and fastness of a printed image while exhibiting a satisfactory anti-blocking property when stored. Also provided is a thermal transfer ink sheet for forming a printed image on the image receptor, including a sequential lamination of a foundation, a release layer, a barrier layer composed of a polyester resin, and a colored layer containing 40 to 60% by weight of a polyester resin and 30 to 60% by weight of a coloring agent. This thermal transfer ink sheet is advantageously used to form on the above image receptor a printed image of good fixing property and fastness.

Abstract: A thermal transfer recording medium comprising a foundation and a thermal transfer ink layer provided thereon, said thermal transfer ink layer containing the particles of a silicone compound. The recording medium gives print images having excellent scratch or abrasion resistance without any deterioration in clearness of print image. The recording medium of self-correctable type gives print images which can be corrected clearly by a self-correction method.

Abstract: A recording medium for electrothermal transfer printing comprising a base film, an adhesiveness improving layer provided on one surface of the base film, an electrically resistive layer provided on the adhesiveness improving layer, and a heat-sensitive transfer ink layer provided on the other surface of the base film, said electrically resistive layer comprising a binder comprising a polyvinyl butyral resin as a main component, an electrically conductive powder and an inorganic metallic compound type flame retardant. The content of an electrically conductive powder such as a conductive carbon in the resistive layer can be increased to reduce the electric resistance of the resistive layer and problems such as peeling of the resistive layer can be prevented, and a satisfactory flame resistance can be obtained without increasing the resistivity of the resistive layer. Thus, the electrothermal transfer printing can be conducted satisfactorily without any dangerousness.