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    Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof
    2.
    发明授权
    Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof 有权
    具有使用磁化反转场的梯度的人造图案结构的磁性介质及其使用方法

    公开(公告)号：US08169728B2

    公开(公告)日：2012-05-01

    申请号：US12630728

    申请日：2009-12-03

    申请人： Hiroaki Nemoto ,  Hiroyuki Suzuki ,  Masae Suzuki, legal representative ,  Miki Hara ,  Yoshio Suzuki

    发明人： Hiroaki Nemoto ,  Hiroyuki Suzuki ,  Miki Hara ,  Yoshio Suzuki

    IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/82

    CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/59616 ,  G11B5/743 ,  G11B5/855

    摘要： To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the pattern dot. Each pattern dot has a structure in which a plurality of parts having different magnetization reversal fields are bonded with exchange interaction in the in-plane direction of a medium, substrate. The positional relationship between the parts having different magnetization reversal fields is substantially coincident between the adjacent pattern dots, which are arranged to have a gradient of magnetization reversal field in a track direction or track transverse direction. Further, the recording is performed by adapting a gradient of recording magnetic field to the gradient of magnetization reversal field. Other methods and systems are described as well.

    摘要翻译： 通过抑制作用在图形点之间的磁静电相互作用在记录处理上并且扩大用于记录同步定时滞后或跟踪图案点上的重合失调的余量的影响，避免了记录错误的发生。 每个图案点具有其中具有不同磁化反转场的多个部分在介质，衬底的面内方向上以交换相互作用结合的结构。 具有不同的磁化反转场的部分之间的位置关系在相邻的图形点之间基本一致，相邻的图形点被布置成在轨道方向或轨道横向方向上具有磁化反转场的梯度。 此外，通过使记录磁场的梯度适应于磁化反转场的梯度来进行记录。 还描述了其他方法和系统。

    MAGNETIC MEDIUM HAVING AN ARTIFICIAL PATTERN STRUCTURE USING A GRADIENT OF A MAGNETIZATION REVERSAL FIELD AND A METHOD OF USE THEREOF
    3.
    发明申请
    MAGNETIC MEDIUM HAVING AN ARTIFICIAL PATTERN STRUCTURE USING A GRADIENT OF A MAGNETIZATION REVERSAL FIELD AND A METHOD OF USE THEREOF 有权
    具有使用磁化反转场的梯度的人造图案结构的磁性介质及其使用方法

    公开(公告)号：US20100142084A1

    公开(公告)日：2010-06-10

    申请号：US12630728

    申请日：2009-12-03

    申请人： Hiroaki Nemoto ,  Hiroyuki Suzuki ,  Masae Suzuki ,  Miki Hara ,  Yoshio Suzuki

    发明人： Hiroaki Nemoto ,  Hiroyuki Suzuki ,  Masae Suzuki ,  Miki Hara ,  Yoshio Suzuki

    IPC分类号： G11B5/596 ,  G11B5/82

    CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/59616 ,  G11B5/743 ,  G11B5/855

    摘要： To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the pattern dot. Each pattern dot has a structure in which a plurality of parts having different magnetization reversal fields are bonded with exchange interaction in the in-plane direction of a medium, substrate. The positional relationship between the parts having different magnetization reversal Fields is substantially coincident between the adjacent pattern dots, which are arranged to have a gradient of magnetization reversal field in a track direction or track transverse direction. Further, the recording is performed by adapting a gradient of recording magnetic field to the gradient of magnetization reversal field. Other methods and systems are described as well.

    摘要翻译： 通过抑制作用在图形点之间的磁静电相互作用在记录处理上并且扩大用于记录同步定时滞后或跟踪图案点上的重合失调的余量的影响，避免了记录错误的发生。 每个图案点具有其中具有不同磁化反转场的多个部分在介质，衬底的面内方向上以交换相互作用结合的结构。 具有不同的磁化反转场的部分之间的位置关系在相邻的图案点之间基本上一致，相邻的图形点被布置成具有轨道方向或轨道横向方向上的磁化反转场的梯度。 此外，通过使记录磁场的梯度适应于磁化反转场的梯度来进行记录。 还描述了其他方法和系统。

    Thin film magnetic recording head with very narrow track width performing high density recording at high driving frequency
    7.
    发明授权
    Thin film magnetic recording head with very narrow track width performing high density recording at high driving frequency 失效
    具有非常窄轨道宽度的薄膜磁记录头在高驱动频率下执行高密度记录

    公开(公告)号：US06091582A

    公开(公告)日：2000-07-18

    申请号：US48985

    申请日：1998-03-27

    申请人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

    发明人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

    IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/147 ,  G11B5/23

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/313 ,  G11B5/3143 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

    摘要： A thin film magnetic head is providing for recording with less blur having a high recording magnetic field, for use in a recording/reproduction separation type magnetic head and a magnetic recording/reproducing apparatus. The thin film magnetic head, in which a gap film of a recording head and a magnetic film in contact with the gap film have the same track width, includes an upper magnetic film of the recording head and an upper shield film of a magnetic resistive film, each having a width wider than the track width, and a cross section parallel to the air bearing surface of the upper magnetic film is reduced at a position less than a gap depth from the air bearing surface. The thin film magnetic head has a coil conductor sandwiched by a first magnetic film and a fourth magnetic film, a second magnetic body magnetically connected to the first magnetic film, a third magnetic body magnetically connected to the fourth magnetic film, and a magnetic gap sandwiched by the second and third magnetic films, in which an insulating and non-magnetic single film in contact with the second and third magnetic films covers at least the first magnetic film.

    摘要翻译： 薄膜磁头提供用于具有高记录磁场的较少模糊的记录，用于记录/再现分离型磁头和磁记录/再现装置。 其中记录头的间隙膜和与间隙膜接触的磁性膜具有相同的轨道宽度的薄膜磁头包括记录头的上部磁性膜和磁性电阻膜的上部屏蔽膜 各自具有比轨道宽度宽的宽度，并且平行于上部磁性膜的空气支承表面的横截面在比空气轴承表面小于间隙深度的位置处减小。 薄膜磁头具有由第一磁性膜和第四磁性膜夹持的线圈导体，与第一磁性膜磁性连接的第二磁性体，与第四磁性膜磁性连接的第三磁性体和夹在 通过第二和第三磁性膜，其中与第二和第三磁性膜接触的绝缘和非磁性单膜至少覆盖第一磁性膜。