Process of producing master carrier for magnetic transfer
    11.
    发明授权
    Process of producing master carrier for magnetic transfer 失效
    制造磁性转移主载体的工艺

    公开(公告)号:US07294251B2

    公开(公告)日:2007-11-13

    申请号:US10916527

    申请日:2004-08-12

    IPC分类号: C25D1/00

    摘要: A process for producing a master carrier contains steps of: forming a desired pattern on a support to form a resist pattern support; forming a first ferromagnetic thin film on the resist pattern support by a vacuum film forming method; forming a third ferromagnetic thick film on the first ferromagnetic thin film by an electroplating; and peeling the support from the resist pattern support provided with the first ferromagnetic thin film and the third ferromagnetic thick film.

    摘要翻译: 用于制造主载体的方法包括以下步骤:在载体上形成所需的图案以形成抗蚀剂图案载体; 通过真空成膜法在抗蚀剂图案载体上形成第一铁磁薄膜; 通过电镀在第一铁磁薄膜上形成第三铁磁厚膜; 以及从设置有第一铁磁性薄膜和第三铁磁性厚膜的抗蚀剂图案支持体剥离支撑体。

    Method for producing magnetic recording medium
    12.
    发明授权
    Method for producing magnetic recording medium 失效
    磁记录介质的制造方法

    公开(公告)号:US06207223B1

    公开(公告)日:2001-03-27

    申请号:US09357988

    申请日:1999-07-21

    IPC分类号: B05D136

    CPC分类号: G11B5/84 G11B5/848

    摘要: In a method for producing a multilayer magnetic recording medium having at least three coating layers on a side of a magnetic recording layer side, the at least three coating layers are formed on the magnetic layer side at least two times dividedly.

    摘要翻译: 在制造在磁记录层一侧具有至少三个涂层的多层磁记录介质的方法中,至少三层涂层在磁层一侧形成至少两次。

    Magnetic transfer master disk, its manufacturing method and magnetic transfer method
    14.
    发明授权
    Magnetic transfer master disk, its manufacturing method and magnetic transfer method 失效
    磁传输主盘,其制造方法和磁转移方式

    公开(公告)号:US07674535B2

    公开(公告)日:2010-03-09

    申请号:US11347326

    申请日:2006-02-06

    IPC分类号: G11B5/66 G11B5/851 G11B5/858

    CPC分类号: G11B5/865 G11B5/82 G11B5/855

    摘要: The present invention provides a magnetic transfer master disk comprising: a master substrate formed by a metal plate, on a surface of which a protruding and recessed pattern corresponding to transfer information is transferred by electroforming, the metal plate being composed of two or more electroforming layers that are different from each other in crystal orientation; and a magnetic layer formed on the protruding and recessed pattern of the master substrate in order to eliminate warpage and distortion of the master disk even if the close contact pressure is increased during transferring magnetic information such as format information to a magnetic disk used in a hard disk device and the like.

    摘要翻译: 本发明提供一种磁转移母盘,包括:由金属板形成的母基板,其表面上通过电铸转印对应于转印信息的突出和凹陷图案,所述金属板由两个或更多个电铸层 在晶体取向上彼此不同; 以及形成在母板的突出和凹陷图案上的磁性层,以便消除主盘的翘曲和变形,即使在将诸如格式信息的磁信息转移到硬盘中使用的磁盘中时,即使接近压力增加 盘装置等。

    Method of manufacturing master disk for magnetic transfer, master disk for magnetic transfer, and magnetic recording medium
    15.
    发明申请
    Method of manufacturing master disk for magnetic transfer, master disk for magnetic transfer, and magnetic recording medium 审中-公开
    用于磁转移的母盘的制造方法,用于磁性转印的母盘和磁记录介质

    公开(公告)号:US20060216550A1

    公开(公告)日:2006-09-28

    申请号:US11385702

    申请日:2006-03-22

    申请人: Seiji Kasahara

    发明人: Seiji Kasahara

    IPC分类号: G11B5/64 B05D5/12

    CPC分类号: G11B5/865 G11B5/82

    摘要: The present invention provides a method of manufacturing a master disk for magnetic transfer, comprising the steps of: forming a metal plate having a predetermined thickness on an original plate having a concavo-convex pattern corresponding to information to be transferred; stamping the metal plate separated from the original plate to form a center opening and a circular rim, thereby providing a master substrate; and depositing a magnetic layer on the concavo-convex pattern of the master substrate, wherein a region at the upper edge of the center opening where a roll off occurs when the center opening of the master substrate is formed by stamping is defined as a center-opening roll-off region, a predetermined range of center-opening buffer region is provided outside of the center-opening roll-off region, and the concavo-convex pattern is formed outside of the center-opening buffer region.

    摘要翻译: 本发明提供一种制造用于磁转移的母盘的方法,包括以下步骤:在具有对应于要传送的信息的凹凸图案的原版上形成具有预定厚度的金属板; 冲压与原版分离的金属板,形成中心开口和圆形边缘,从而提供主基板; 并且在母基板的凹凸图案上沉积磁性层,其中当通过冲压形成母版基板的中心开口时,在中心开口的上边缘处发生滚落的区域被定义为中心开口, 开口滚降区域,中心开口缓冲区域的预定范围设置在中心开口滚降区域的外侧,并且凹凸图案形成在中心开口缓冲区域的外部。

    Magnetic recording medium
    16.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US06652953B2

    公开(公告)日:2003-11-25

    申请号:US09358552

    申请日:1999-07-22

    IPC分类号: G11B564

    摘要: A magnetic recording medium includes a support, and a single magnetic layer having a thickness of 0.3 &mgr;m or less, which contains nonmagnetic particles. In the magnetic medium, the thickness of the single magnetic layer is equal to or larger than an average particle diameter of the nonmagnetic particles.

    摘要翻译: 磁记录介质包括载体和厚度为0.3μm或更小的含有非磁性颗粒的单个磁性层。 在磁性介质中,单个磁性层的厚度等于或大于非磁性颗粒的平均粒径。