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    • 7. 发明专利
    • THERMAL TRANSFER RECORDING MEDIUM
    • JPS62227694A
    • 1987-10-06
    • JP7232886
    • 1986-03-28
    • NITTO ELECTRIC IND CO
    • MASUTANI NOBORUFUJIMURA YASUOHOTTA YUJISAKAI ISOJI
    • B41M5/26B41M5/392
    • PURPOSE:To enable enhancement of a transparency and enlargement of a color reproduction area, by providing an ink layer in which a coloring material having naphthol azo group or chlorophenyl azo group is dispersed in a wax of paraffin series by using a surface-active agent of nitrogen-containing series. CONSTITUTION:An ink layer is made of, particularly, a material in which a coloring material having naphthol azo group or chlorophenyl azo group is dispersed in a wax of paraffin series by using a surface-active agent of nitrogen- containing series. In the aforesaid ink layer, because a good affinity between a coloring material having naphthol azo group or chlorophenyl azo group and a surface-active agent or nitrogen-containing series results in a remarkably good dispersion of the coloring material in the wax of paraffin series, the transparency is enhanced to a great extent, and moreover, since the transparency curve is nearing an ideal spectrum, a wide color reproduction area is realized. The coloring material of naphthol azo group series such as oxyethylene alkylamine or/and polyoxyethylene alkylamine is effectively used.