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    • 4. 发明授权
    • Manufacturing method of magnetic recording medium, the magnetic recording medium, and magnetic recording and reproducing apparatus
    • 磁记录介质的制造方法,磁记录介质和磁记录和再现装置
    • US08277874B2
    • 2012-10-02
    • US12256148
    • 2008-10-22
    • Sanae ShimizuYuji Ito
    • Sanae ShimizuYuji Ito
    • G11B5/55
    • G11B5/855G11B5/66
    • A manufacturing method of a magnetic recording medium, the magnetic recording medium having a structure where plural magnetic recording areas and isolation areas in a magnetic recording layer are formed on a non-magnetic substrate, the isolation areas being configured to magnetically isolate the magnetic recording areas, the manufacturing method includes a step of forming the magnetic layer on the non-magnetic substrate, the magnetic layer being made of a hard magnetic material having a magnetic coercive force whereby magnetic recording is impossible; and a step of performing ion implantation partially at positions corresponding to the plural magnetic recording areas of the magnetic layer so that the magnetic recording areas are formed by reducing the magnetic coercive force in the positions of the ion implantation to a magnetic-recordable magnetic coercive force, and allowing the isolation areas to maintain the magnetic coercive force whereby magnetic recording is impossible.
    • 一种磁记录介质的制造方法,所述磁记录介质具有在非磁性基板上形成磁记录层中的多个磁记录区域和隔离区域的结构,所述隔离区域被配置为磁隔离磁记录区域 所述制造方法包括在所述非磁性基板上形成所述磁性层的步骤,所述磁性层由具有磁矫顽磁力的硬磁性材料制成,从而磁记录是不可能的; 以及在与磁性层的多个磁记录区域相对应的位置处部分地进行离子注入的步骤,使得通过将离子注入位置的磁矫顽力降低到磁记录磁矫顽力而形成磁记录区域 ,并且允许隔离区域保持磁矫顽力,从而磁记录是不可能的。
    • 5. 发明申请
    • MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM, THE MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
    • 磁记录介质的制造方法,磁记录介质和磁记录和再现装置
    • US20090244783A1
    • 2009-10-01
    • US12256148
    • 2008-10-22
    • Sanae ShimizuYuji Ito
    • Sanae ShimizuYuji Ito
    • G11B5/55G11B5/62
    • G11B5/855G11B5/66
    • A manufacturing method of a magnetic recording medium, the magnetic recording medium having a structure where plural magnetic recording areas and isolation areas in a magnetic recording layer are formed on a non-magnetic substrate, the isolation areas being configured to magnetically isolate the magnetic recording areas, the manufacturing method includes a step of forming the magnetic layer on the non-magnetic substrate, the magnetic layer being made of a hard magnetic material having a magnetic coercive force whereby magnetic recording is impossible; and a step of performing ion implantation partially at positions corresponding to the plural magnetic recording areas of the magnetic layer so that the magnetic recording areas are formed by reducing the magnetic coercive force in the positions of the ion implantation to a magnetic-recordable magnetic coercive force, and allowing the isolation areas to maintain the magnetic coercive force whereby magnetic recording is impossible.
    • 一种磁记录介质的制造方法,所述磁记录介质具有在非磁性基板上形成磁记录层中的多个磁记录区域和隔离区域的结构,所述隔离区域被配置为磁隔离磁记录区域 所述制造方法包括在所述非磁性基板上形成所述磁性层的步骤,所述磁性层由具有磁矫顽磁力的硬磁性材料制成,从而磁记录是不可能的; 以及在与磁性层的多个磁记录区域相对应的位置处部分地进行离子注入的步骤,使得通过将离子注入位置的磁矫顽力降低到磁记录磁矫顽力而形成磁记录区域 ,并且允许隔离区域保持磁矫顽力,从而磁记录是不可能的。
    • 8. 发明申请
    • MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM
    • 磁记录介质的制造方法
    • US20090244777A1
    • 2009-10-01
    • US12256097
    • 2008-10-22
    • Sanae ShimizuYuji Ito
    • Sanae ShimizuYuji Ito
    • G11B5/60G11B5/82B01J19/08
    • G11B5/82B82Y10/00G11B5/66G11B5/743G11B5/855
    • A disclosed method for manufacturing a magnetic recording medium includes a first step of forming a magnetic recording film on a non-magnetic substrate and a second step of forming, in the magnetic recording film, a magnetic recording region which is magnetically recordable and an isolation region which is magnetically non-recordable and includes a first isolation-region portion and a second isolation-region portion. The second step includes the sub-steps of performing first ion implantation on the magnetic recording film to form the first isolation-region portion along a boundary of the isolation region to be formed with the magnetic recording region to be formed; and performing second ion implantation on the magnetic recording film to form the second isolation-region portion in the surface of the isolation region to be formed.
    • 所公开的制造磁记录介质的方法包括在非磁性基板上形成磁记录膜的第一步骤和在磁记录膜中形成磁记录磁记录区和隔离区 其是磁性不可记录的并且包括第一隔离区域部分和第二隔离区域部分。 第二步包括在磁记录膜上进行第一离子注入以沿着要形成的磁记录区形成隔离区的边界的第一隔离区部分的子步骤; 以及在所述磁记录膜上进行第二离子注入,以形成所述隔离区的表面中的所述第二隔离区。