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    • 109. 发明公开
    • THERMAL TRANSFER SHEET
    • 热转印纸
    • EP1958787A1
    • 2008-08-20
    • EP06834339.1
    • 2006-12-08
    • Dai Nippon Printing Co., Ltd.
    • YAMASHITA, HiroyukiISHIDA, TadahiroHIROSE, KeijiWATANABE, HirotakaKUWABARA, ToshikazuFUKUI, DaisukeITO, Hideo
    • B41M5/382
    • B41M5/44B41M5/42B41M5/426B41M2205/02B41M2205/06B41M2205/28B41M2205/38
    • It is an object of the present invention to provide a thermal transfer sheet which has a high transfer sensitivity in thermal transfer printing to obtain a high density print, has a high sharpness of thermal transfer images, can prevent an abnormal transfer in printing even after being stored at high temperature and high humidity, and can provide a sufficiently satis factory printed matter.
      The above object is achieved by a thermal transfer sheet comprising: a substrate; a heat resistant slip layer provided on one side of the substrate; an undercoat layer and a dye layer provided in that order on the other side of the substrate, wherein the undercoat layer is formed by applying and drying a coating liquid which contains, as main components, a water soluble self cross-linking resin and colloidal inorganic pigment ultrafine particles, and cross-linking polymerizing the water soluble self cross-linking resin, or wherein the undercoat layer is formed by using colloidal inorganic pigment ultrafine particles and a copolymer resin of vinyl pyrrolidone and vinyl acetate as main components.
    • 本发明的一个目的是提供一种热转印片材,其在热转印印刷中具有高转印灵敏度以获得高密度印刷,具有高热转印图像的清晰度,即使在印刷后也能够防止印刷中的异常转印 储存在高温高湿下,并能提供足够满意的工厂印刷品。 上述目的通过一种热转印片材来实现,该热转印片材包括:基材; 设置在衬底的一侧上的耐热滑层; 底涂层和染料层,其中底涂层通过涂布并干燥包含作为主要组分的水溶性自交联树脂和胶体无机物质的涂布液而形成 颜料超细颗粒和交联聚合水溶性自交联树脂,或其中底涂层是通过使用胶体无机颜料超细颗粒和乙烯基吡咯烷酮和乙酸乙烯酯的共聚物树脂作为主要组分形成的。