Multi-usable thermal transfer ink sheet

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, wherein the multi-transferable ink layer is a layer containing 5 to 40% by weight of a copolymer of ethylene with another vinyl monomer, 10 to 40% by weight of a softening agent and 30 to 60% by weight of a pigment, and the overcoat is a layer containing 50 to 90% by weight of a copolymer of ethylene with another vinyl monomer and 0 to 50% by weight of a pigment, the melt viscosity measured at 100.degree. C. of the overcoat is not less than 2,900 poises and the difference between the melt viscosity measured at 100.degree. C. of the overcoat and the melt viscosity measured at 100.degree. C. of the ink layer is not less than 1,000 poises.