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    SUBSTRATE FOR A MAGNETIC DISC AND METHOD MANUFACTURING SAME
    2.
    发明专利
    SUBSTRATE FOR A MAGNETIC DISC AND METHOD MANUFACTURING SAME 未知

    公开(公告)号：DE3467947D1

    公开(公告)日：1988-01-14

    申请号：DE3467947

    申请日：1984-08-01

    Applicant: KAO CORP

    Inventor： KISHINE NOBUYUKI ,  IMAMURA TETSUYA ,  YAMAUCHI MICHIHIDE

    IPC: G11B5/62 ,  C04B35/52 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84

    Abstract: A substrate for magnetic discs, which are to be used as external storage in data processors, is formed from glass-like carbon materials by themselves or contained in a thermosetting resin matrix. The glass-like carbon materials have excellent thermal resistance, can be finished to a mirror-like surface, and have less surface defects than aluminum substrates. Magnetic materials can be adhered directly onto the surface of such substrates shaped in the form of a disc. The resulting disc has good hardness, is resistant to elevated temperatures, is less likely to deform, and is low in cost.

    MAGNETIC DISK CARTRIDGE
    3.
    发明专利
    MAGNETIC DISK CARTRIDGE 未知

    公开(公告)号：CA2048579A1

    公开(公告)日：1992-02-09

    申请号：CA2048579

    申请日：1991-08-07

    Applicant: KAO CORP

    Inventor： SAITO TADASHI ,  KISHINE NOBUYUKI ,  KANAI TAKAO ,  OKANO MIKO

    IPC: G11B23/033 ,  G11B23/50 ,  G11B5/82

    Abstract: A magnetic disk cartridge retains a rotational magnetic disk in a case through liners, which contact the associated surfaces of the disk and each have multiple long protrusions formed almost uniformly and almost in parallel to one another on the whole surface on the disk side. As the magnetic disk rotates, the angle of the disk surface contacting the long protrusions can gradually change, thus ensuring removal of dust from the disk. In addition, this structure can reduce the frictional resistance between the liner's surface and magnetic disk, which contributes to faster rotation of the disk.

    5.
    发明专利
    未知

    公开(公告)号：DE3627824A1

    公开(公告)日：1987-03-12

    申请号：DE3627824

    申请日：1986-08-16

    Applicant: KAO CORP

    Inventor： KISHINE NOBUYUKI ,  HIRAKURA MEGUMU ,  IMAMURA TETSUYA

    IPC: G11B23/033 ,  G11B33/04 ,  G11B23/03 ,  B65D85/57

    Abstract: This invention provides an inexpensive structure for a protecting jacket for rotatable magnetic recording media which has a dimension sufficient to cover openings on the jacket and is provided as a sheet adhered to the jacket to cover said openings and prevent entry of dust.

    MAGNETIC DISK JACKET
    6.
    发明专利
    MAGNETIC DISK JACKET 未知

    公开(公告)号：CA2038447A1

    公开(公告)日：1991-09-29

    申请号：CA2038447

    申请日：1991-03-25

    Applicant: KAO CORP

    Inventor： IKEDA HIROSHI ,  KISHINE NOBUYUKI ,  OTANI TSUYOSHI ,  NIINOMI MASAHIKO

    IPC: G11B23/02 ,  G11B23/033 ,  G11B23/50

    Abstract: In a magnetic disk jacket including a liner partly welded to the inner surface of a case and adapted to clean the surface of a magnetic disk, the liner contains 0.001 to 0.05g of a polydimethylsiloxane derivative having a viscosity of from 50 to 3000 cSt at 25.degree.C and having a polyether group or both polyether group and epoxy group in a molecule per 1 g of the liner.

    7.
    发明专利
    未知

    公开(公告)号：FR2586852B1

    公开(公告)日：1989-12-22

    申请号：FR8612316

    申请日：1986-09-02

    Applicant: KAO CORP

    Inventor： KISHINE NOBUYUKI ,  HIRAKURA MEGUMU ,  IMAMURA TETSUYA

    IPC: G11B23/033 ,  G11B33/04

    Abstract: This invention provides an inexpensive structure for a protecting jacket for rotatable magnetic recording media which has a dimension sufficient to cover openings on the jacket and is provided as a sheet adhered to the jacket to cover said openings and prevent entry of dust.

    9.
    发明专利
    未知

    公开(公告)号：FR2586852A1

    公开(公告)日：1987-03-06

    申请号：FR8612316

    申请日：1986-09-02

    Applicant: KAO CORP

    Inventor： KISHINE NOBUYUKI ,  HIRAKURA MEGUMU ,  IMAMURA TETSUYA

    IPC: G11B23/033 ,  G11B33/04

    Abstract: This invention provides an inexpensive structure for a protecting jacket for rotatable magnetic recording media which has a dimension sufficient to cover openings on the jacket and is provided as a sheet adhered to the jacket to cover said openings and prevent entry of dust.

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