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    REWRITABLE OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD
    2.
    发明公开
    REWRITABLE OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD 有权
    可重写光记录介质的方法光记录

    公开(公告)号：EP1475784A4

    公开(公告)日：2012-03-14

    申请号：EP03705130

    申请日：2003-02-13

    申请人： MITSUBISHI KAGAKU MEDIA CO LTD

    发明人： OHNO TAKASHI ,  KUBO MASAE ,  HORIE MICHIKAZU ,  MIZUNO MASAAKI ,  HOSHINO HIROYUKI ,  OKAMURO AKIO

    IPC分类号： G11B7/24 ,  G11B7/0045 ,  G11B7/006 ,  G11B7/125 ,  G11B7/26

    CPC分类号： G11B7/243 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/0062 ,  G11B7/126 ,  G11B7/24 ,  G11B7/259 ,  G11B7/26 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10T428/21

    摘要： The present invention provides CD-RW which makes high velocity recording at a level of at least 24-times velocity possible, rewritable DVD which makes high velocity recording at a level of at least 6-times velocity possible, and a recording method therefor, while maintaining interchangeability with conventional CD-RW standards and rewritable DVD standards. A rewritable optical recording medium comprising a substrate and a phase-change type recording layer, wherein a portion in a crystalline state corresponds to an unrecorded or erased state, and a portion in an amorphous state correspond to a recorded state, to record EFM modulated information by forming amorphous marks by irradiating the recording layer with a recording laser beam, and wherein recording is carried out by irradiating a recording laser beam having a wavelength of about 780 nm through an optical system having a numerical aperture NA of 0.5 or 0.55, at 24-times velocity or 32-times velocity of the reference velocity, where the reference velocity (1-time velocity) is a linear velocity of from 1.2 m/s to 1.4 m/s, modulation m11 of record signals is from 60% to 80%, the top value Rtop of the reflectivity of the high pattern is from 15% to 25%, and jitters are at most 35 nsec.

    OPTICAL RECORDING MEDIUM
    5.
    发明公开
    OPTICAL RECORDING MEDIUM 有权
    OPTISCHES AUFZEICHNUNGSMEDIUM

    公开(公告)号：EP1973111A4

    公开(公告)日：2009-09-09

    申请号：EP07706622

    申请日：2007-01-11

    申请人： MITSUBISHI KAGAKU MEDIA CO LTD

    发明人： HORIE MICHIKAZU ,  KIYONO KENJIROU ,  KUBO MASAE

    IPC分类号： G11B7/254 ,  G11B7/24 ,  G11B7/244 ,  G11B7/246 ,  G11B7/2467 ,  G11B7/249 ,  G11B7/2492 ,  G11B7/257 ,  G11B7/2578 ,  G11B7/258 ,  G11B7/259

    CPC分类号： G11B7/2467 ,  G11B7/2492 ,  G11B7/2578 ,  G11B7/259 ,  G11B2007/24612 ,  G11B2007/25706 ,  Y10T428/21

    摘要： Provided is an extremely high-density optical recording medium with excellent jitter characteristics and good recording/reproducing characteristics. An optical recording medium 20 comprises a substrate 21 with a guide groove formed therein, a layer 23 with a light reflection function, a recording layer 22 comprising a dye as a main component with a light absorption function for a wavelength of recording/reproducing light in an unrecorded state, and a cover layer 24 capable of transmitting the recording/reproducing light incident to the recording layer 22, in the order mentioned; an interlayer 30 containing at least one element selected from the group consisting of Ta, Nb, V, W, Mo, Cr and Ti, is provided between the layer 23 with the light reflection function and the recording layer 22.

    摘要翻译： 本发明提供具有优异的抖动特性和良好的记录再现特性的非常高密度的光记录介质。 本发明提供一种光记录介质，其特征在于，具备：具有导光槽的基板;具有光反射功能的层;以含有吸收光的功能的色素作为主要成分的记录层; 以未记录状态记录再现光波长，以及覆盖层（24），该覆盖层（24）能够透过以按照顺序记录入射到记录层（22）的再现光。 在具有光反射功能的层（23）和记录层（22）之间设置含有选自Ta，Nb，V，W，Mo，Cr和Ti中的至少一种元素的中间层（30） ）。