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    Optical information recording medium and its recording and reproducing method
    2.
    发明授权
    Optical information recording medium and its recording and reproducing method 失效
    光信息记录介质及其记录和再现方法

    公开(公告)号：US06388984B2

    公开(公告)日：2002-05-14

    申请号：US09140296

    申请日：1998-08-25

    申请人： Hideki Kitaura ,  Noboru Yamada ,  Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Shigeaki Furukawa

    发明人： Hideki Kitaura ,  Noboru Yamada ,  Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Shigeaki Furukawa

    IPC分类号： G11B724

    CPC分类号： G11B7/00718 ,  G11B7/24 ,  G11B7/24079

    摘要： A reflectance increasing type optical information recording medium in which the crosstalk is inhibited in the land and groove recording. This optical information recording medium comprises a substrate having a groove and a land provided between adjacent grooves and a recording layer that is provided on the substrate and that changes the reflectance by irradiation with light beams. In this recording medium, the reflectance after recording is greater than the reflectance before recording. Moreover, the depth D of the groove is set to be in the range of &lgr;/8n to 3&lgr;/8n, where the wavelength of the light beam is &lgr; and the refractive index of the substrate is n. And the difference, &Dgr;&phgr;=&phgr;1−&phgr;0, between the phase &phgr;1 of the reflected light after recording and the phase &phgr;0 of the reflected light before recording is in the range of (−0.1+2 m) &pgr; to (0.1+2 m) &pgr;, where m is an integer.

    摘要翻译： 反射率增加型光信息记录介质，其中在纹间和凹槽记录中阻止串扰。 该光学信息记录介质包括具有沟槽和设置在相邻沟槽之间的焊盘的衬底和设置在衬底上并通过照射光束来改变反射率的记录层。 在该记录介质中，记录后的反射率大于记录前的反射率。 此外，凹槽的深度D设定在lambd / 8n至3lambd / 8n的范围内，其中光束的波长为羔羊，并且基板的折射率为n。 并且记录后的反射光的相位phi1与记录前的反射光的相位phi0之间的差值DELTAphi = phi1-phi0在（-0.1 + 2m）pi到（0.1 +2μm）的范围内 pi，其中m是整数。

    Optical information recording medium and method of manufacturing thereof, manufacturing apparatus, recording/reproducing method, and recording/reproducing apparatus
    3.
    发明授权
    Optical information recording medium and method of manufacturing thereof, manufacturing apparatus, recording/reproducing method, and recording/reproducing apparatus 有权
    光信息记录介质及其制造方法，制造装置，记录/再现方法和记录/再现装置

    公开(公告)号：US07423957B2

    公开(公告)日：2008-09-09

    申请号：US10912093

    申请日：2004-08-06

    申请人： Hideo Kusada ,  Ken'ichi Nagata ,  Hideki Kitaura ,  Kenichi Nishiuchi ,  Noboru Yamada ,  Rie Kojima

    发明人： Hideo Kusada ,  Ken'ichi Nagata ,  Hideki Kitaura ,  Kenichi Nishiuchi ,  Noboru Yamada ,  Rie Kojima

    IPC分类号： G11B7/24

    CPC分类号： G11B7/266 ,  C23C14/08 ,  C23C14/205 ,  C23C14/542 ,  C23C14/568 ,  G11B7/24038

    摘要： The present invention provides an optical information recording medium of excellent signal quality in high density recording onto a semitransparent information layer, its manufacturing method and a manufacturing apparatus. The optical information recording medium of the present invention includes at least a semitransparent information layer disposed between a circular transparent substrate and a protective substrate, in which the information layer has spiral grooves for guiding a light beam, and also includes a recording film capable of recording/reproducing information thereon/therefrom by changing at least in two states detectable optically by irradiation of the light beam from the transparent substrate side, and the difference in film thickness of slope portions of the inner circumferential side and outer circumferential side of the groove is within ±10% in the entire region for recording/reproducing information.

    摘要翻译： 本发明提供一种在半透明信息层的高密度记录中具有优异的信号质量的光学信息记录介质，其制造方法和制造装置。 本发明的光信息记录介质至少包括设置在圆形透明基板和保护基板之间的半透明信息层，其中信息层具有用于引导光束的螺旋槽，并且还包括能够记录的记录膜 通过至少通过从透明基板侧照射光束可以光学检测的两个状态来改变其上的信息，并且凹槽的内周侧和外周侧的斜坡部分的膜厚差在 整个区域的记录/再现信息为±10％。

    Optical information recording medium and manufacture method thereof
    4.
    发明申请
    Optical information recording medium and manufacture method thereof 失效
    光信息记录介质及其制造方法

    公开(公告)号：US20060146685A1

    公开(公告)日：2006-07-06

    申请号：US10567356

    申请日：2004-08-05

    申请人： Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Hideki Kitaura ,  Hideo Kusada ,  Noboru Yamada ,  Shinya Abe

    发明人： Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Hideki Kitaura ,  Hideo Kusada ,  Noboru Yamada ,  Shinya Abe

    IPC分类号： G11B7/24

    CPC分类号： G11B7/261 ,  G11B7/24076 ,  G11B7/266

    摘要： An optical information recording medium is provided which has favorable signal quality even in high density recording using a translucent information layer. The optical information recording medium includes one or more information layers including a recording layer for recording/reproducing an information signal by irradiation with a laser light, and a separating layer or a protective substrate on which a first information layer of the information layer on the irradiation face side is formed, the separating layer or the protective substrate having a guide groove spirally or concentrically formed on the surface, and the respective inclined planes on the inner perimeter side and the outer perimeter side of the guide groove having inclined angles α and β with respect to the bottom face of the guide groove. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles α and β are different. The information layer has roughly agreeing thicknesses in the inclined face portion on the inner perimeter side and in the inclined face portion on the outer perimeter side in the dissymmetric region.

    摘要翻译： 提供一种光信息记录介质，即使在使用半透明信息层的高密度记录中也具有良好的信号质量。 光信息记录介质包括一个或多个信息层，包括用于通过照射激光来记录/再现信息信号的记录层;以及分离层或保护基板，信息层的第一信息层在其上被照射 形成面侧，分离层或保护基板具有在表面上螺旋状或同心地形成的引导槽，并且导向槽的内周侧和外周侧上的相应倾斜面具有倾斜角α和β， 相对于导槽的底面。 引导槽在倾斜角α和β不同的半径方向上具有一个或多个非对称区域。 信息层在不对称区域的内周侧和外周侧的倾斜面部分中的倾斜面部分具有粗略一致的厚度。

    Optical information recording medium and manufacture method thereof
    6.
    发明授权
    Optical information recording medium and manufacture method thereof 失效
    光信息记录介质及其制造方法

    公开(公告)号：US07540006B2

    公开(公告)日：2009-05-26

    申请号：US10567356

    申请日：2004-08-05

    申请人： Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Hideki Kitaura ,  Hideo Kusada ,  Noboru Yamada ,  Shinya Abe

    发明人： Ken'ichi Nagata ,  Kenichi Nishiuchi ,  Hideki Kitaura ,  Hideo Kusada ,  Noboru Yamada ,  Shinya Abe

    IPC分类号： G11B7/24

    CPC分类号： G11B7/261 ,  G11B7/24076 ,  G11B7/266

    摘要： An optical information recording medium includes one or more information layers including a recording layer for recording/reproducing an information signal by irradiation with a laser light, and a seperating layer or a protective substate on which a first information layer of the information layer on the irradiation face side is formed. The seperating layer or the protective substrate having a guide groove spirally or concentrically formed on the surface, and the respective inclined planes on the inner perimeter side and the outer perimeter side of the guide groove having inclined angles α and β with respect to the bottom face of the guide groove. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles α and β are different. The information layer has roughly agreeing thicknesses in the inclined face portion on the inner and outer perimeter sides in the dissymmetric region.

    摘要翻译： 光信息记录介质包括一个或多个信息层，包括用于通过照射激光来记录/再现信息信号的记录层;以及分离层或保护子区，信息层的第一信息层在其上照射 正面形成。 分离层或保护基板具有螺旋地或同心地形成在表面上的引导槽，并且引导槽的内周侧和外周侧上的相应倾斜平面相对于底面具有α和β倾斜角 的导槽。 引导槽在倾斜角α和β不同的半径方向上具有一个或多个非对称区域。 信息层在不对称区域中的内周侧和外周侧上的倾斜面部中具有粗略一致的厚度。