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    • 5. 发明授权
    • Optical recording medium
    • 光记录介质
    • US06278683B1
    • 2001-08-21
    • US09659756
    • 2000-09-11
    • Kozaburo Hayashi
    • Kozaburo Hayashi
    • G11B724
    • G11B7/2542G11B7/24G11B7/2534G11B7/2585G11B7/26
    • An optical recording medium is provided, in which there are few warps, and no corrosion in the recording film, even when the protective film of the optical recording medium is made thick. The optical recording medium includes a substrate 2, a recording film 3 formed on the substrate 2, and a protective film 4 formed on the recording film 3, and recording signals can be reproduced optically from the side of the protective film 4. The protective film 4 is a film obtained by curing with UV light irradiation a composition including a cationic polymerizable resin (A) and a cationic polymerization catalyst (B) at a ratio of 100:0.2 to 1.5 by weight. The protective film 4 has a thickness of 20 to 200 &mgr;m.
    • 即使当光记录介质的保护膜变厚时,也提供了一种光记录介质,其中几乎没有经纱,并且在记录膜中没有腐蚀。 光记录介质包括基板2,形成在基板2上的记录膜3和形成在记录膜3上的保护膜4,并且记录信号可以从保护膜4的侧面光学再现。保护膜 图4是通过紫外线照射将包含阳离子聚合性树脂(A)和阳离子聚合催化剂(B)的组合物以100:0.2〜1.5重量比固化而获得的膜。 保护膜4的厚度为20〜200μm。