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    • 4. 发明授权
    • Heat transfer sheet
    • 传热片
    • US5418210A
    • 1995-05-23
    • US085915
    • 1993-07-06
    • Noritaka EgashiraMasashi NaritaHideo FujimuraYoshinori Nakamura
    • Noritaka EgashiraMasashi NaritaHideo FujimuraYoshinori Nakamura
    • B41M5/035B41M5/395B41M5/38
    • B41M5/395Y10S428/913Y10S428/914Y10T428/31551Y10T428/31768Y10T428/31935Y10T428/31971
    • A heat transfer sheet including a substrate film and a dye layer including a dye and a binder formed thereon, wherein the binder includes organic-solvent-soluble polymers having ester moieties and/or urethane moieties, prepared by modifying water-soluble natural and/or semisynthetic polymers by esterifying and/or urethanating an inner hydroxyl group thereof, and the dye includes a sublimable dye homogeneously dissolved in the binder. A heat transfer sheet is also disclosed which includes a substrate film, and a dye layer formed thereon, wherein the dye layer includes (i) a binder which is cellulose acetate having an acetylation rate of 2.4 or more and a total substitution rate of 2.7 or more, and (ii) a sublimable dye dissolved in the binder. The sublimable dye contained in the dye layer is not separated from the binder even when the heat transfer sheet is preserved for a long period of time. Furthermore, the heat transfer sheet can produce a high-density image even when only a small amount of thermal energy is applied thereto.
    • 一种传热片,其包括基材膜和包含染料和在其上形成的粘合剂的染料层,其中所述粘合剂包括具有酯部分和/或氨基甲酸酯部分的有机溶剂可溶性聚合物,其通过将水溶性天然和/或 半合成聚合物通过酯化和/或氨基甲酸酯化其内部羟基,并且染料包括均匀溶解在粘合剂中的可升华染料。 还公开了一种传热片,其包括基底膜和在其上形成的染料层,其中所述染料层包括(i)乙酰化速率为2.4或更高,总替代率为2.7的乙酸纤维素的粘合剂,或 和(ii)溶解在粘合剂中的升华性染料。 包含在染料层中的升华性染料即使在长时间保存传热片时也不会与粘合剂分离。 此外,即使仅向其施加少量的热能,传热片也可以产生高密度图像。