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    Optical data recording disc with protrusion between clamping area and center hole
    6.
    发明授权
    Optical data recording disc with protrusion between clamping area and center hole 有权
    光学数据记录盘在夹紧区域和中心孔之间具有突起

    公开(公告)号：US07761888B2

    公开(公告)日：2010-07-20

    申请号：US12068871

    申请日：2008-02-12

    申请人： Kazuhiro Hayashi ,  Eiji Ohno ,  Masanari Mohri

    发明人： Kazuhiro Hayashi ,  Eiji Ohno ,  Masanari Mohri

    IPC分类号： G11B33/14 ,  G11B7/254

    CPC分类号： G11B23/0035 ,  B29C45/263 ,  B29C2045/2661 ,  B29C2045/2667 ,  B29D17/005 ,  B29L2017/005 ,  G11B7/121 ,  G11B7/24003 ,  G11B7/24097 ,  G11B7/263 ,  G11B17/0284

    摘要： A disc-shaped optical data recording medium has a signal recording layer for reading and/or writing data using light, and a 10 μm to 200 μm thick transparent protective layer disposed over the signal recording layer. The optical data recording medium includes a protrusion projecting from a surface of the transparent protective layer on a light-incidence surface side to which light is emitted to the signal recording layer. The protrusion is disposed in an area between a center hole and a clamping area where the optical data recording medium is held when reading and/or writing data in the signal recording layer.

    摘要翻译： 盘形光学数据记录介质具有用于使用光读取和/或写入数据的信号记录层和设置在信号记录层上的10μm至200μm厚的透明保护层。 光学数据记录介质包括在光入射表面侧上从透明保护层的表面突出的突起，光入射表面侧向信号记录层发射光。 当在信号记录层中读取和/或写入数据时，突出部设置在中心孔和保持光学数据记录介质的夹紧区域之间的区域中。

    Optical disc and method of protecting same
    8.
    发明申请
    Optical disc and method of protecting same 审中-公开

    公开(公告)号：US20070237063A1

    公开(公告)日：2007-10-11

    申请号：US11707267

    申请日：2007-02-16

    申请人： Todd Kuchman

    发明人： Todd Kuchman

    IPC分类号： G11B7/254

    CPC分类号： G11B7/24097 ,  G11B7/24003 ,  G11B7/254 ,  G11B23/0021 ,  G11B23/0035

    摘要： An optical disc for storage and retrieval of digital data, and a system and method for protecting the optical disc is disclosed. The optical disc has projections or embossments on one or both surfaces. When the optical disc is placed on a substantially flat surface such as a tabletop or a desktop, the projections act as pedestals that elevate the optical disc above the flat surface. The resulting gap or clearance helps prevent damage to the optical disc caused by contaminants on the flat surface or by defects in the flat surface. The projections are sized to provide adequate clearance between the disc and the flat surface, while minimizing interference between the projections and components of optical disc readers and drives. The optical disc may also include one or more depressions that are sized and configured to receive projections from another disc, which facilitates stacking of the optical discs.

    Optical information recording medium and method of manufacturing the same
    10.
    发明申请
    Optical information recording medium and method of manufacturing the same 失效
    光信息记录介质及其制造方法

    公开(公告)号：US20050196575A1

    公开(公告)日：2005-09-08

    申请号：US11071725

    申请日：2005-03-03

    申请人： Eiji Kariyada

    发明人： Eiji Kariyada

    IPC分类号： G11B7/254 ,  G11B7/243 ,  G11B7/257 ,  G11B7/26 ,  B32B3/02

    CPC分类号： G11B7/257 ,  G11B7/243 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/25711 ,  Y10T428/21

    摘要： An optical information recording medium includes an oxide/nitride dielectric film that shows a film forming rate higher than that of SiON film and hence is adapted to mass production. The recording medium shows little change in the reflectivity after a long environment test. A first dielectric layer made of ZnS—SiO2, an oxide/nitride dielectric layer made of silicon-nickel oxide/nitride, a second dielectric layer made of ZnS—SiO2, a first interface layer made of GeN, a recording layer made of Ge2Sb2Te5, a second interface layer made of GeN, a third dielectric layer made of ZnS—SiO2 and a reflection layer are laid sequentially on a transparent substrate in the above mentioned order. The oxide/nitride dielectric layer is formed by reactive sputtering in a mixed gas atmosphere containing Ar gas, O2 gas and N2 gas. The refractive index of the oxide/nitride dielectric layer is made lower than that of the first dielectric layer and that of the second dielectric layer and the light absorption coefficient of the recording layer is made lower in an amorphous state than in a crystalline state.

    摘要翻译： 光学信息记录介质包括氧化物/氮化物电介质膜，该氧化物/氮化物电介质膜的成膜速率高于SiON膜，因此适合批量生产。 在长时间的环境试验后，记录介质的反射率几乎没有变化。 由ZnS-SiO 2构成的第一电介质层，由硅 - 氧化镍/氮化物制成的氧化物/氮化物电介质层，由ZnS-SiO 2 ，由GeN制成的第一界面层，由Ge 2 Sb 2 Te 5制成的记录层，由GeN制成的第二界面层， 按照上述顺序将由ZnS-SiO 2 N制成的第三电介质层和反射层依次放置在透明基板上。 氧化物/氮化物电介质层通过反应性溅射在含有Ar气体，O 2气体和N 2气体的混合气体气氛中形成。 使得氧化物/氮化物电介质层的折射率低于第一电介质层的折射率，第二介电层的折射率和记录层的光吸收系数在非晶状态下比在结晶状态下低。