Thermal transfer medium

Details Thermal transfer medium Thermal transfer medium

1995-01-31

1997-01-28

Hess, B. Hamilton

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

4283044, 4284231, 4284244, 428484, 428913, 428914, B41M 526, B41M 534

Patent

active

055976417

ABSTRACT:
A thermal transfer medium is disclosed which is useful in a method for forming a color image by selectively melt-transferring at least two of a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer onto a receptor having a microporous surface layer. The thermal transfer medium includes a foundation having thereon a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer, a non-transferable undercoat layer being provided between the foundation and the respective ink layers, each of the ink layers comprising a coloring agent and a vehicle comprising a wax as a major ingredient, each of the ink layers having a melt viscosity of 20 to 200 cps/90 .degree. C., the undercoat layer comprising a resin exhibiting a strong adhesion to a wax. The thermal transfer medium gives highly fine color images excellent in gradation quality and color reproducibility on the basis of subtractive color mixture of yellow, magenta and cyan.

REFERENCES:
patent: 5064807 (1991-11-01), Yoshida et al.

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