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    Improved magnetic recording member
    62.
    发明公开
    Improved magnetic recording member 失效
    改进的磁记录会员

    公开(公告)号：EP0199271A3

    公开(公告)日：1987-10-14

    申请号：EP86105222

    申请日：1986-04-16

    Applicant: ALUMINIUM COMPANY OF AMERICA

    Inventor： Kampert, William P.

    IPC: G11B05/84 ,  G11B05/858

    CPC classification number: G11B5/84

    Abstract: Disclosed is a method of making an improved magnetic recording member comprising the steps of providing an aluminium base alloy member, anodizing the member to provide thereon an oxide coating having pores therein, and treating the coating to enlarge the pore size, the treating being controlled to maintain the individuality of the pores. A magnetically receptive material is deposited in the enlarged pores to provide a magnetic recording member having an increased dipole signal.

    Magnetic recording medium
    63.
    发明公开
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：EP0206115A3

    公开(公告)日：1987-05-27

    申请号：EP86107953

    申请日：1986-06-11

    Applicant: HITACHI, LTD.

    Inventor： Kokaku, Yuichi ,  Kitoh, Makoto ,  Honda, Yoshinori Hagiwara-sou 101

    IPC: G11B05/72 ,  G11B05/84

    CPC classification number: G11B5/725 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/30 ,  Y10T428/31678 ,  Y10T428/31721 ,  Y10T428/31786

    Abstract: Disclosed is a magnetic recording medium in which a magnetic layer of a ferromagnetic material, a layer of an organic material and a layer of carbon are formed on a substrate in this order. The magnetic recording medium has the benefit of remarkably extended life time because peeling and removing of the carbon protective layer can be prevented so that carbon can exerts its own lubricating action during the sliding contact of the magnetic recording medium with a magnetic head.

    Abstract translation: 本发明公开了一种磁记录介质，其中，铁磁材料的磁性层，有机材料层和碳层按此顺序形成在基板上。 由于可以防止碳保护层的剥离和去除，因此磁记录介质具有显着延长的使用寿命的优点，从而在磁记录介质与磁头滑动接触期间碳可以发挥其自身的润滑作用。

    Read-only magnetic recording media and process of making the same
    64.
    发明公开
    Read-only magnetic recording media and process of making the same 失效
    只读磁记录媒体及其制作方法

    公开(公告)号：EP0120990A3

    公开(公告)日：1987-02-04

    申请号：EP83111405

    申请日：1983-11-15

    Applicant: International Business Machines Corporation

    Inventor： Bishop, Ross W. ,  Moxley, Arthur Eugene

    IPC: H01F41/14 ,  G11B05/84

    CPC classification number: B82Y10/00 ,  G11B5/74 ,  G11B5/743 ,  G11B5/825 ,  G11B5/84 ,  H01F41/34

    Abstract: A method of making read-only magnetic recording media by the use of photolithographic/photoresist techniques, and the vacuum deposition of discrete bits of a high coercivity metal, followed by magnetization of said metal. A nonmagnetic substrate (11) is covered by a layer a photoresist (20) and a layer of high coercivity magnetic material (30). Selective light-pattern exposure of the resist, followed by layer removal procedures, cause the substrate to be covered by islands of hard magnetic material (10), in the pattern of a desired data track. The substrate is then subjected to the influence of a steady-state magnetic field in order to convert the metal islands into a read-only data pattern which can be read by a magnetic head. A floppy disk of this type is used to stress-test the head placement of floppy disk drives.

    Perpendicular magnetic recording medium, method for producing the same, and sputtering device
    66.
    发明公开
    Perpendicular magnetic recording medium, method for producing the same, and sputtering device 失效
    全息磁记录介质，其制造方法和溅射装置

    公开(公告)号：EP0093838A3

    公开(公告)日：1986-04-16

    申请号：EP83101484

    申请日：1983-02-16

    Applicant: TEIJIN LIMITED

    Inventor： Kadokura, Sadao ,  Honjo, Kazuhiko ,  Tomie, Takashi ,  Naoe, Masahiko

    IPC: G11B05/46 ,  G11B05/84 ,  H01F41/18 ,  C22C15/00

    CPC classification number: G11B5/851 ,  G11B5/66

    Abstract: A magnetic recording medium conventionally utilizes the in-plane magnetization mode, but recently the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which the C axis is oriented perpendicular to the layer surface, has been proposed. The known perpendicular magnetic recording medium is produced by means of RF sputtering and comprises a Permalloy layer, as layer of a low coercive-force material, between the nonmagnetic base and the hcp cobalt alloy layer. The perpendicular anisotropy attained by the present invention in very excellent and is superior to that of a perpendicular recording medium having no Permalloy layer because a Co-Ta alloy is used as the layer of a low coercive-force material.

    Disk carrier and plug
    70.
    发明公开
    Disk carrier and plug 失效
    磁盘卡和插头

    公开(公告)号：EP0177073A3

    公开(公告)日：1987-03-25

    申请号：EP85201331

    申请日：1985-08-20

    Applicant: Komag, Inc.

    Inventor： Allen, Ronald ,  Chen, Tu

    IPC: G11B05/84

    CPC classification number: G11B5/84

    Abstract: 57 A carrier is provided to hold a disk while magnetic material is plated simultaneously on the two surfaces of the disk. The carrier contains a first opening substantially the same diameter as the disk and a second opening formed about a center line offset from the center line of the first opening so as to form a recess around a portion of the edge of the first opening. The recess allows the disk to be mounted into the carrier by placing the disk in a portion of the first opening and in a portion of the recess without having the surface of the disk touching the surface of the recess. The disk is then lowered into the first opening while leaving the remainder of the carrier material adjacent the recess to block the flow of plasma and impurities from one side of the disk to the other during the coating of the surfaces of the disk with magnetic media. A plug is provided for placement in the center hole of the disk. The plug is in two portions, one of which contains a spring means for flexibly holding the two halves together during the coating of the disk with magnetic media so that thermal expansion of the disk during coating does not result in the plug rattling or coming loose from the disk. The plug also serves as a knob or handle by which the disk can be handled, carrier or mounted. A plurality of openings are provided in one carrier to allow both surfaces of a corresponding plurality of disks to be coated simul- i taneousty with magnetic media.

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