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    • 37. 发明授权
    • Thermal transfer ribbon with self generating silicone resin backcoat
    • 带有自产硅树脂背涂层的热转印带
    • US6077594A
    • 2000-06-20
    • US102326
    • 1998-06-22
    • Joseph D. Roth
    • Joseph D. Roth
    • B41J31/00B41M5/382B41M5/392B41M5/395B41M5/40B41M5/41B41M5/42B41M5/44B32B3/00
    • B41M5/443B41M5/392B41M5/395B41M2205/02B41M2205/06B41M2205/30B41M2205/36B41M5/41B41M5/423B41M5/44Y10T428/24893Y10T428/24901Y10T428/273Y10T428/2962
    • Thermal transfer ribbons derived from aqueous-based coating formulations which do not require the application of a separate backcoat to the substrate. Backcoatings are self-generated on the untreated side of the substrate when the untreated side of the substrate contacts a remote portion of the top surface of the thermal transfer layer. The thermal transfer ribbons which self-generate backcoats comprise a flexible substrate and a thermal transfer layer which contains a water-soluble silicone block copolymer with blocks of silicone resin and water-soluble polymer. The water-soluble silicone block copolymer migrates to the top surface of the thermal transfer layer and generates a backcoat on the opposite surface of the substrate when the ribbon is wound such that the untreated surface of the substrate contacts a remote portion of the top surface of the thermal transfer layer. Embodiments which incorporate both a water soluble silicone block copolymer and hydrophobic siloxane liquid or gum in the thermal transfer layer, for migration, are included.
    • 衍生自水性涂料配方的热转印带不需要对基材施加单独的背涂层。 当基材的未处理侧接触热转印层的顶表面的偏远部分时,背涂层在基材的未处理侧上自生成。 自发回涂层的热转印带包括柔性基材和热转印层,其中含有具有硅树脂嵌段和水溶性聚合物的水溶性硅氧烷嵌段共聚物。 水溶性硅氧烷嵌段共聚物迁移到热转移层的顶表面,并且当带被卷绕时,在衬底的相对表面上产生背涂层,使得衬底的未处理表面接触到衬底的顶表面的远侧部分 热转印层。 包括在热转印层中并入水溶性硅氧烷嵌段共聚物和疏水硅氧烷液体或胶的迁移用的实施方案。