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    • 1. 发明申请
    • Optical information recording medium and manufacture method thereof
    • 光信息记录介质及其制造方法
    • US20060146685A1
    • 2006-07-06
    • US10567356
    • 2004-08-05
    • Ken'ichi NagataKenichi NishiuchiHideki KitauraHideo KusadaNoboru YamadaShinya Abe
    • Ken'ichi NagataKenichi NishiuchiHideki KitauraHideo KusadaNoboru YamadaShinya Abe
    • G11B7/24
    • G11B7/261G11B7/24076G11B7/266
    • 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.
    • 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。
    • 2. 发明授权
    • Optical information recording medium and manufacture method thereof
    • 光信息记录介质及其制造方法
    • US07540006B2
    • 2009-05-26
    • US10567356
    • 2004-08-05
    • Ken'ichi NagataKenichi NishiuchiHideki KitauraHideo KusadaNoboru YamadaShinya Abe
    • Ken'ichi NagataKenichi NishiuchiHideki KitauraHideo KusadaNoboru YamadaShinya Abe
    • G11B7/24
    • G11B7/261G11B7/24076G11B7/266
    • 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.
    • 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。
    • 5. 发明授权
    • Optical information recording medium and its recording and reproducing method
    • 光信息记录介质及其记录和再现方法
    • US06388984B2
    • 2002-05-14
    • US09140296
    • 1998-08-25
    • Hideki KitauraNoboru YamadaKen'ichi NagataKenichi NishiuchiShigeaki Furukawa
    • Hideki KitauraNoboru YamadaKen'ichi NagataKenichi NishiuchiShigeaki Furukawa
    • G11B724
    • G11B7/00718G11B7/24G11B7/24079
    • 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.
    • 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。