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    • 57. 发明授权
    • Optical data recording medium
    • 光学数据记录介质
    • US06697324B2
    • 2004-02-24
    • US10107973
    • 2002-03-27
    • Hideharu TajimaNobuyuki Takamori
    • Hideharu TajimaNobuyuki Takamori
    • G11B724
    • G11B7/2542G11B7/2403G11B7/24067G11B7/2533G11B7/2534G11B7/2585G11B2007/24304G11B2007/2571G11B2007/25713
    • This invention is an optical data recording medium having a substrate protective film for effectively suppressing deformation (warpage) associated with change in environmental humidity. The optical data recording medium includes a transparent substrate, a thin film layer formed on one surface of the transparent substrate, a thin film protective film formed of a resin as a main component on the thin film layer, and a substrate protective film formed of a resin as a main component on the other surface of the transparent substrate than the thin film protective film, in which the thin film layer is a single layer film or a multi-layer film including at least one of a dielectric film, a recording film and a reflective film, and the substrate protective film has a coefficient of humidity expansion that is larger than a coefficient of humidity expansion of the thin film protective film.
    • 本发明是一种具有用于有效抑制与环境湿度变化相关的变形(翘曲))的基板保护膜的光学数据记录介质。 光学数据记录介质包括透明基板,在透明基板的一个表面上形成的薄膜层,在薄膜层上由树脂作为主要成分形成的薄膜保护膜,以及由 树脂作为主要成分在透明基板的另一个表面上比薄膜保护膜,其中薄膜层是单层膜或多层膜,其包括电介质膜,记录膜和 反射膜,并且所述基板保护膜具有比所述薄膜保护膜的湿度膨胀系数大的湿度膨胀系数。