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    Optical recording medium its manufacturing method and injection molding apparatus
    4.
    发明授权
    Optical recording medium its manufacturing method and injection molding apparatus 失效
    光记录媒体其制造方法和注塑设备

    公开(公告)号：US07224665B2

    公开(公告)日：2007-05-29

    申请号：US10182173

    申请日：2001-11-28

    申请人： Minoru Kikuchi ,  Akio Koshita ,  Jun Nakano

    发明人： Minoru Kikuchi ,  Akio Koshita ,  Jun Nakano

    IPC分类号： G11B3/70

    CPC分类号： G11B7/263 ,  B29C45/263 ,  B29C45/2632 ,  B29D17/005 ,  G11B7/24047 ,  G11B23/0035

    摘要： In an optical disc in which an information signal is recorded/reproduced by irradiating a laser beam to a disc substrate 1 in which an information signal portion 1c has been provided on one principal plane from the side where the information signal portion 1c exists, a clamp reference surface 3a is set to the information signal portion 1c side of a replica substrate 1a constructing the optical disc. The clamp reference surface 3a is set to a flat surface and a thickness of the replica substrate 1a in a clamping area 3 is set to be larger than that of the convex-shaped replica substrate 1a in an information recording area 4. The replica substrate 1a in which a periphery of a center hole 1b is thicker than the information recording area 4 is used.

    摘要翻译： 在通过将激光束照射到信息信号部分1c已经从信息信号部分1c存在的一侧在一个主平面上提供信息信号部分1c的光盘基板1来记录/再生信息信号的光盘中， 钳位参考表面3a被设置在构成光盘的复制基板1a的信息信号部分1c侧。 将夹具基准面3a设定为平坦面，夹持区域3中的复制基板1a的厚度设定为大于信息记录区域4中的凸形复制基板1a的厚度。 使用其中中心孔1b的周边比信息记录区域4厚的复制基板1a。

    Disk substrate and optical disk
    6.
    发明申请
    Disk substrate and optical disk 审中-公开
    磁盘基板和光盘

    公开(公告)号：US20060120264A1

    公开(公告)日：2006-06-08

    申请号：US10534536

    申请日：2003-10-20

    申请人： Yoshihito Fukushima ,  Jun Nakano ,  Shin Masuhara ,  Akio Koshita

    发明人： Yoshihito Fukushima ,  Jun Nakano ,  Shin Masuhara ,  Akio Koshita

    IPC分类号： G11B7/24

    CPC分类号： G11B7/00736 ,  G11B7/0945 ,  G11B7/0953

    摘要： A data area to record and/or reproduce data and an eccentricity measuring area 14 in which a groove area formed with spiral grooves and a planer mirror area are spatially alternately arranged are provided for a disc substrate. A width of groove area formed in the eccentricity measuring area, a width of mirror area, and an interval between the grooves in the groove area are selected so that a conventional mechanical characteristics measuring apparatus can track a plurality of grooves formed in the groove area as if the grooves were a single groove.

    摘要翻译： 记录和/或再现数据的数据区域以及在空间上交替布置有形成有螺旋槽和平面镜面积的槽区域的偏心测量区域14设置用于盘基片。 选择在偏心测量区域中形成的沟槽区域的宽度，镜面积的宽度以及槽区域中的槽之间的间隔，使得常规的机械特性测量装置可以跟踪形成在槽区域中的多个槽 如果槽是单个槽。