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    PERPENDICULAR MAGNETIC MEMORY MEDIUM, A MANUFACTURING METHOD THEREOF, AND A MAGNETIC MEMORY STORAGE
    3.
    发明申请
    PERPENDICULAR MAGNETIC MEMORY MEDIUM, A MANUFACTURING METHOD THEREOF, AND A MAGNETIC MEMORY STORAGE 审中-公开
    全能磁记忆介质，其制造方法和磁存储器存储

    公开(公告)号：US20090061106A1

    公开(公告)日：2009-03-05

    申请号：US12258798

    申请日：2008-10-27

    申请人： Nobutaka Ihara ,  Hiroyoshi Kodama ,  Takuya Uzumaki

    发明人： Nobutaka Ihara ,  Hiroyoshi Kodama ,  Takuya Uzumaki

    IPC分类号： G11B5/845

    CPC分类号： G11B5/84 ,  B22F2998/00 ,  G11B5/64 ,  B22F1/0018

    摘要： A perpendicular magnetic memory medium capable of high-density recording and reproducing consists of a soft magnetic lining layer (12), a non-magnetic middle layer (13), a recording layer (14) that is formed by arranging hard magnetic nanoparticles (17), an overcoat layer (15), and a lubricous layer (16), all of which are arranged on a substrate (11) in this sequence, wherein an average diameter of the nanoparticles ranges between 2 nm and 10 nm, a standard deviation of diameters of the nanoparticles is 10% or less of the average diameter of the nanoparticles, and an average interval of the nanoparticles is between 0.2 nm and 5 nm, and an magnetic easy axis of the recording layer 14 is perpendicular to a face of the substrate (11), such that high-density recording and reproducing is realized by the perpendicular magnetic medium.

    摘要翻译： 能够进行高密度记录和再现的垂直磁记录介质由软磁衬层（12），非磁性中间层（13），通过配置硬磁性纳米颗粒（17）形成的记录层（14）组成 ），外涂层（15）和润滑层（16），其全部以该顺序布置在基板（11）上，其中纳米颗粒的平均直径范围在2nm和10nm之间，标准偏差 纳米颗粒的直径的平均直径为10％以下，纳米颗粒的平均间隔为0.2nm〜5nm，记录层14的磁性容易轴垂直于 衬底（11），使得通过垂直磁介质实现高密度记录和再现。

    Nanoparticle for magnetic recording medium, magnetic recording medium using the same, and process for manufacturing magnetic recording medium
    4.
    发明申请
    Nanoparticle for magnetic recording medium, magnetic recording medium using the same, and process for manufacturing magnetic recording medium 审中-公开
    用于磁记录介质的纳米颗粒，使用其的磁记录介质以及用于制造磁记录介质的方法

    公开(公告)号：US20050260340A1

    公开(公告)日：2005-11-24

    申请号：US11154536

    申请日：2005-06-17

    申请人： Nobutaka Ihara ,  Hiroyoshi Kodama ,  Takuya Uzumaki

    发明人： Nobutaka Ihara ,  Hiroyoshi Kodama ,  Takuya Uzumaki

    IPC分类号： G11B5/70 ,  G11B5/706 ,  G11B5/712 ,  G11B5/714 ,  G11B5/845 ,  B05D5/12 ,  B32B5/16

    CPC分类号： G11B5/712 ,  G11B5/845 ,  Y10T428/2991

    摘要： The present invention aims to provide a magnetic recording medium improved in recording density, with maintaining various performances thereof, an efficient process for manufacturing the magnetic recording medium, and a nanoparticle for a magnetic recording medium sufficiently utilized therefor. The nanoparticle for a magnetic recording medium of the present invention has an organic compound capable of generating carbon adhering to the surface thereof, or 7 nm or less of a number average particle diameter thereof, or 0.1 or less of a particle distribution (distribution width (σ)/particle diameter (D)) thereof. The magnetic recording medium of the present invention has a recording layer containing the nanoparticle for a magnetic recording medium. The process for manufacturing a magnetic recording medium of the present invention includes a step of applying, onto a substrate and in a magnetic field, a nanoparticle dispersed liquid in which the nanoparticle for a magnetic recording medium is dispersed.

    摘要翻译： 本发明旨在提供一种提高记录密度的磁记录介质，保持其各种性能，制造磁记录介质的有效方法，以及用于其的磁记录介质用纳米颗粒。 本发明的磁记录介质的纳米粒子具有能够产生附着在其表面上的碳或其数均粒径为7nm以下的有机化合物，或0.1以下的粒子分布（分布宽度（ σ）/粒径（D））。 本发明的磁记录介质具有含有用于磁记录介质的纳米颗粒的记录层。 本发明的磁记录介质的制造方法包括在基板上和磁场中涂布分散有磁记录介质用纳米粒子的纳米粒子分散液的工序。

    MAGNETIC RECORDING/REPRODUCING APPARATUS AND METHOD OF MANUFACTURING THE SAME
    8.
    发明申请
    MAGNETIC RECORDING/REPRODUCING APPARATUS AND METHOD OF MANUFACTURING THE SAME 审中-公开
    磁记录/再现装置及其制造方法

    公开(公告)号：US20100097720A1

    公开(公告)日：2010-04-22

    申请号：US12553835

    申请日：2009-09-03

    申请人： Nobutaka Ihara ,  Hiroto Takeshita ,  Yuji Ito

    发明人： Nobutaka Ihara ,  Hiroto Takeshita ,  Yuji Ito

    IPC分类号： G11B5/187 ,  B05D5/12

    CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855 ,  G11B2005/0005

    摘要： According to one embodiment, a magnetic recording/reproducing apparatus includes a magnetic head and a magnetic recording medium. The magnetic recording medium includes a recording layer formed of a hard magnetic layer and a soft magnetic layer. The hard magnetic layer has a bit width corresponding to a length of a bit island in a radial direction of the magnetic recording medium. The soft magnetic layer is arranged on the hard magnetic layer. The soft magnetic layer has a width smaller than the bit width and is arranged at a position displaced in a direction away from an off-track portion of the leading edge of the magnetic head skewed at an angle.

    摘要翻译： 根据一个实施例，磁记录/再现装置包括磁头和磁记录介质。 磁记录介质包括由硬磁层和软磁层形成的记录层。 硬磁性层具有与磁记录介质的径向方向上的位岛的长度对应的位宽度。 软磁性层配置在硬磁性层上。 软磁性层的宽度小于位宽度，并配置在远离磁头的前缘的偏离磁道部分的方向偏移的位置。

    MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE
    9.
    发明申请
    MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
    磁记录介质和磁记录和再现装置

    公开(公告)号：US20090257148A1

    公开(公告)日：2009-10-15

    申请号：US12337206

    申请日：2008-12-17

    申请人： Nobutaka Ihara ,  Hiroto Takeshita

    发明人： Nobutaka Ihara ,  Hiroto Takeshita

    IPC分类号： G11B5/82

    CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82

    摘要： There is provided a magnetic recording medium which contains a substrate in the shape of a disk, and a plural of recording bit formed on the substrate, wherein a bottom face of the recording bit is disposed so as to face the substrate, a top face of the recording bit is disposed so as to correspond to the bottom face of the recording bit, and Twb is larger than Twt, where Twb indicates a width of the bottom face with respect to a radius direction of the magnetic recording medium, and Twt indicates a width of the top face with respect to the radius direction.

    摘要翻译： 提供了一种磁记录介质，其包含盘形状的基板和形成在基板上的多个记录钻头，其中记录钻头的底面以与基板相对的方式设置， 记录位被配置为与记录位的底面相对应，并且Twb大于Twt，其中Twb表示底面相对于磁记录介质的半径方向的宽度，Twt表示 顶面相对于半径方向的宽度。

    MAGNETIC RECORDING MEDIUM AND INFORMATION RECORDING DEVICE
    10.
    发明申请
    MAGNETIC RECORDING MEDIUM AND INFORMATION RECORDING DEVICE 审中-公开
    磁记录介质和信息记录装置

    公开(公告)号：US20090296279A1

    公开(公告)日：2009-12-03

    申请号：US12404131

    申请日：2009-03-13

    申请人： Nobutaka Ihara ,  Hiroto Takeshita ,  Yuji Ito

    发明人： Nobutaka Ihara ,  Hiroto Takeshita ,  Yuji Ito

    IPC分类号： G11B5/82

    CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

    摘要： A magnetic recording medium including: a substrate; plural information recording members that are formed of a hard magnetic material on the substrate, in each of which magnetization in a direction crossing the substrate is generated and, when the information recording members pass in a predetermined traveling direction in a magnetic field for information recording, the magnetization is directed to a direction corresponding to a direction of the magnetic field and information is recorded; and a high-permeability film that is placed on an edge on a front side of the information recording members in the traveling direction and has a magnetic permeability higher than a magnetic permeability of the information recording members.

    摘要翻译： 一种磁记录介质，包括：基板; 在基板上形成由硬磁性材料形成的多个信息记录部件，每个信息记录部件在与基板交叉的方向上产生磁化，并且当信息记录部件在用于信息记录的磁场中经过预定行进方向时， 磁化指向与磁场方向相对应的方向，并记录信息; 以及放置在信息记录部件的行进方向的前侧的边缘上并且具有比信息记录部件的磁导率高的磁导率的高磁导率膜。