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    • 4. 发明公开
    • Optical recording medium
    • 光学记录介质
    • EP0179436A3
    • 1988-07-06
    • EP85113359
    • 1985-10-22
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Miyazaki, JinseiAndo, EijiYoshino, KimiakiMorimoto, Kazuhisa
    • G11B07/24
    • G11B7/244G11B7/2475G11B7/2531Y10S430/163
    • An optical recording medium is prepared by the use of spiropyrane whose molecular structure contains an alkyl chain having at least 10 more carbon atoms, and by the use of an LB film method or a spin coating method. This recording medium is of a structure wherein when irradiated with the UV, the spiropyrane is photo-isomerized to photomerocyane and, thereafter, when subsequently heated at 35 to 40°C for 15 minutes, a J-aggregate of the photomerocyane is formed in very stabilized form. When the recording medium is irradiated with light of wavelength of visible spectrum, the color is bleached with the information consequently recorded. The optical recording medium herein disclosed is rewritable and can retain the recorded information for 5,000 hours or more.
    • 通过使用分子结构含有至少10个以上碳原子的烷基链的螺吡喃并且通过使用LB膜方法或旋涂方法来制备光学记录介质。 该记录介质具有这样的结构,其中当用紫外线照射时,螺吡喃被光异构化为光偶氨基,并且此后当在35至40℃下加热15分钟时,光非氰基的J-聚集体形成 稳定的形式。 当用可见光谱波长的光照射记录介质时,颜色被随后记录的信息所漂白。 这里公开的光学记录介质是可重写的,并且可以将记录的信息保留5000小时或更多。