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    OPTICAL RECORDING MEDIUM
    3.
    发明公开
    OPTICAL RECORDING MEDIUM 失效
    OPTISCHER AUFZEICHNUNGMEDIUM

    公开(公告)号：EP1017045A1

    公开(公告)日：2000-07-05

    申请号：EP98912730.3

    申请日：1998-04-08

    申请人： Sony Corporation

    发明人： TAMURA, Shinichiro, Sony Corporation

    IPC分类号： G11B7/24 ,  B41M5/26

    CPC分类号： G11B7/252 ,  G11B7/245 ,  G11B7/246 ,  G11B7/2472 ,  G11B7/248 ,  G11B7/249 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2595 ,  G11B2007/24612 ,  Y10S428/913 ,  Y10T428/21 ,  Y10T428/31678

    摘要： An optical recording medium having a structure that a recording layer containing organic coloring matter and a reflecting layer are sequentially formed on a light-transmissive substrate thereof so that an information signal is recorded/reproduced when the optical recording medium is irradiated with a laser beam made incident on the light-transmissive substrate, the optical recording medium incorporating: a light absorbing layer which is formed more adjacent to an incident point of the laser beam as compared with the reflecting layer, through which the laser beam passes and which absorbs light in an absorption wavelength region for the recording layer. Photo-deterioration of the recording layer composed of organic coloring matter occurs owing to a portion of natural light which has the wavelength which exists in the absorbing wavelength region for the organic coloring matter. In the optical recording medium having the above-mentioned light absorbing layer, natural light made incident on the reflecting layer is shielded by the reflecting layer. Therefore, the recording layer is not irradiated with natural light. A portion of light of natural light made incident on the substrate which has the wavelength which exists in the absorbing wavelength region for the organic coloring matter is absorbed by the light absorbing layer and, therefore, attenuated. As a result, the quantity of light with which the recording layer is irradiated can be reduced.

    摘要翻译： 具有以下结构的光学记录介质：具有有机色素和反射层的记录层依次形成在其透光性基板上，使得当光记录介质被照射激光束时记录/再现信息信号 入射到透光性基板上，光记录介质包括：与反射层相比形成为更靠近激光束的入射点的光吸收层，激光束通过该光吸收层，并且吸收层 用于记录层的吸收波长区域。 由有机色素的吸收波长区域中存在的波长的自然光的一部分发生由有机色素组成的记录层的光劣化。 在具有上述光吸收层的光记录介质中，入射到反射层上的自然光被反射层遮蔽。 因此，记录层不被自然光照射。 入射到具有存在于有机色素的吸收波长区域中的波长的基板上的自然光的一部分被光吸收层吸收，因此被衰减。 结果，可以减少记录层照射的光量。