Abstract: A multi-usable thermal transfer ink sheet including a foundation and a multi-transferable ink layer provided on the foundation, the ink layer containing a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g. The ink sheet enables multi-printing with ensuring a high print density.

Abstract: A multi-usable thermal transfer ink sheet wherein on a foundation is provided a thermal transfer ink layer which is tranferable in portions in terms of the thickness thereof. To realize multi-printing even in an indirect thermal transfer method, the multi-usable thermal transfer ink sheet is characterized in that the thermal transfer ink layer contains as main ingredients thereof a wax compound having a polar group, and a pigment.

Abstract: A multi-usable thermal transfer ink sheet comprising a foundation, a heat-meltable, multi-transferable ink layer provided on the foundation, and a heat-meltable overcoat provided on the ink layer, said overcoat having a greater cohesive force than that of said ink layer. A rough paper-adaptability and a resistance to receiving paper-staining are improved with ensuring a desired multi-printing property.

Abstract: A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4.times.10.sup.2 to 2.5.times.10.sup.3 g/10 min. at 190.degree. C. and containing a vehicle and 3.times.10 to 6.times.10% by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head. The multi-usable heat transfer ink ribbon, though the whole of the ink layer is transferable by incorporating into the ink layer no nontransferable material which hinders the transfer of the ink, can give printed images having the same clearness as that of the printed image obtained by the initial printing even after the ribbon is repeatedly used multiple times for printing.