Information recording disk
    4.
    发明授权
    Information recording disk 失效
    信息记录盘

    公开(公告)号:US5265086A

    公开(公告)日:1993-11-23

    申请号:US927542

    申请日:1992-07-29

    IPC分类号: G11B7/24 G11B23/00 G11B3/70

    CPC分类号: G11B7/24 G11B23/0035

    摘要: An information recording disk formed from two substrates with a stepped central opening for receiving a hub within the stepped recess of at least one of the substrates is provided. In one embodiment, the central aperture of the first substrate is larger than the central aperture of the second substrate to form the stepped recess. In another embodiment, at least one substrate has a stepped surface defining a central aperture and a hub structure is mounted within this stepped recess to reduce overall thickness of the disk.

    摘要翻译: 提供了一种信息记录盘,其由具有台阶中心开口的两个基板形成,用于在至少一个基板的台阶凹槽内容纳轮毂。 在一个实施例中,第一基板的中心孔径大于第二基板的中心孔径以形成台阶凹槽。 在另一个实施例中,至少一个基板具有限定中心孔的台阶表面,并且毂结构安装在该阶梯形凹槽内以减小盘的整体厚度。