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    Optical information recording medium having protective layer
    2.
    发明授权
    Optical information recording medium having protective layer 失效
    具有保护层的光学信息记录介质

    公开(公告)号：US4920359A

    公开(公告)日：1990-04-24

    申请号：US376213

    申请日：1989-07-03

    申请人： Yuji Arai ,  Emiko Hamada ,  Yuaki Shin ,  Takashi Ishiguro

    发明人： Yuji Arai ,  Emiko Hamada ,  Yuaki Shin ,  Takashi Ishiguro

    IPC分类号： B41M5/26 ,  G11B7/24 ,  G11B7/254 ,  G11B7/257

    CPC分类号： G11B7/2575 ,  G11B7/2542 ,  G11B2007/24312 ,  G11B2007/24316 ,  G11B7/246 ,  G11B7/2472 ,  G11B7/248 ,  G11B7/249 ,  G11B7/252 ,  G11B7/2534 ,  Y10S430/146 ,  Y10S430/151

    摘要： An optical information recording medium comprising a substrate, an optical recording layer formed over the surface of the substrate, and a protective layer covering the optical recording layer. The protective layer incorporates an antireflection means, such as a laser beam absorbing means, a laser beam scattering means or a laser beam transmitting means, for preventing the reflection of a laser beam applied to the optical recording layer.An optical information recording medium of a second embodiment of the present invention, comprises a substrate, an optical recording layer formed over the surface of the substrate, a protective layer covering the optical recording layer, and a buffer layer interposed between the optical recording layer and the protective layer. At least one of the protective layer or the buffer layer incorporates at least one antireflection means, such as a laser beam absorbing means, a laser beam scattering means and a laser beam transmitting means, for preventing the reflection of a laser beam. The buffer layer facilitates precisely forming recording bits in the optical recording layer by locally deforming the optical recording layer by a laser beam.

    Optical information recording medium
    4.
    发明授权
    Optical information recording medium 失效
    光信息记录介质

    公开(公告)号：US5090009A

    公开(公告)日：1992-02-18

    申请号：US340528

    申请日：1989-04-14

    申请人： Emiko Hamada ,  Yuji Arai ,  Yuaki Shin ,  Takashi Ishiguro

    发明人： Emiko Hamada ,  Yuji Arai ,  Yuaki Shin ,  Takashi Ishiguro

    IPC分类号： G11B7/0045 ,  G11B7/24

    CPC分类号： G11B7/24 ,  G11B7/00452

    摘要： An optical information recording medium comprising a light transmitting substrate, a light absorptive layer overlaying the substrate to absorb a laser beam and a light reflective layer overlaying the light absorptive layer, wherein an optical parameter represented by .rho.=n.sub.abs d.sub.abs /.lambda. where n.sub.abs is the real part of the complex refractive index of the light absorptive layer, d.sub.abs is the thickness of the light absorptive layer and .lambda. is the wavelength of a reading laser beam, is 0.05.ltoreq..rho..ltoreq.0.6, and the imaginary part k.sub.abs of the complex refractive index of the light absorptive layer is at most 0.3.

    Method of making an optical information recording substrate
    7.
    发明授权
    Method of making an optical information recording substrate 失效
    制造光学信息记录基板的方法

    公开(公告)号：US5498509A

    公开(公告)日：1996-03-12

    申请号：US338178

    申请日：1994-11-09

    申请人： Yuaki Shin ,  Takashi Ishiguro ,  Emiko Hamada ,  Keiichi Kagawa

    发明人： Yuaki Shin ,  Takashi Ishiguro ,  Emiko Hamada ,  Keiichi Kagawa

    IPC分类号： G11B7/24 ,  G11B7/26 ,  G11B23/38

    CPC分类号： G11B23/38 ,  G11B7/24 ,  G11B7/26 ,  Y10S430/146

    摘要： An optical information recording substrate and method of producing the substrate, the substrate having a legible matter formed in a groove area thereof or a pit array area thereof, wherein the legible matter includes a plurality of grooves or pit arrays being partially different in the breadth or depth thereof. The grooves or arrays may be partially dislocated in the radial direction of the optical information recording substrate from a predetermined track. The visually legible matter may include a plurality of laser generated pit arrays wherein remaining portions of the legible matter have a plurality of continuous grooves formed therein. The legible matter may also include a plurality of continuous grooves wherein remaining portions of the legible matter includes a plurality of laser generated pit arrays formed therein.

    摘要翻译： 一种光学信息记录基板及其制造方法，该基板具有形成在其凹槽区域中的可读物质或其凹坑阵列区域，其中该可读物质包括多个在宽度上部分不同的凹槽或凹坑阵列， 的深度。 凹槽或阵列可以沿着光学信息记录基板的径向方向从预定轨迹部分脱位。 视觉清晰的物质可以包括多个激光产生的凹坑阵列，其中可读物质的剩余部分在其中形成有多个连续凹槽。 清晰的物质还可以包括多个连续凹槽，其中可读物质的剩余部分包括其中形成的多个激光产生的凹坑阵列。

    Optical information recording substrate and method of making thereof
    8.
    发明授权
    Optical information recording substrate and method of making thereof 失效
    光学信息记录基板及其制造方法

    公开(公告)号：US5398231A

    公开(公告)日：1995-03-14

    申请号：US792591

    申请日：1991-11-15

    申请人： Yuaki Shin ,  Takashi Ishiguro ,  Emiko Hamada ,  Keiichi Kagawa

    发明人： Yuaki Shin ,  Takashi Ishiguro ,  Emiko Hamada ,  Keiichi Kagawa

    IPC分类号： G11B7/24 ,  G11B7/26 ,  G11B23/38 ,  G06K19/06

    CPC分类号： G11B23/38 ,  G11B7/24 ,  G11B7/26 ,  Y10S430/146

    摘要： An optical information recording substrate having a legible matter formed in a groove area thereof or a pit array area thereof, wherein the legible matter includes a plurality of grooves or pit arrays being partially different in the breadth or depth thereof. The grooves or arrays may be partially dislocated in the radial direction of the optical information recording substrate from a predetermined track. The visually legible matter may include a plurality of laser generated pit arrays wherein remaining portions of the legible matter have a plurality of continuous grooves formed therein. The legible matter may also include a plurality of continuous grooves wherein remaining portions of the legible matter includes a plurality of laser generated pit arrays formed therein.

    摘要翻译： 一种光学信息记录基板，其具有形成在其凹槽区域中的可读物质或其凹坑阵列区域，其中所述可读物质包括在其宽度或深度上部分不同的多个凹槽或凹坑阵列。 凹槽或阵列可以沿着光学信息记录基板的径向方向从预定轨迹部分脱位。 视觉清晰的物质可以包括多个激光产生的凹坑阵列，其中可读物质的剩余部分在其中形成有多个连续凹槽。 清晰的物质还可以包括多个连续凹槽，其中可读物质的剩余部分包括其中形成的多个激光产生的凹坑阵列。