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    Magnetic head for perpendicular recording and fabrication process
    22.
    发明授权
    Magnetic head for perpendicular recording and fabrication process 有权
    用于垂直记录和制造过程的磁头

    公开(公告)号：US07639452B2

    公开(公告)日：2009-12-29

    申请号：US11370504

    申请日：2006-03-07

    申请人： Masafumi Mochizuki ,  Isao Nunokawa

    发明人： Masafumi Mochizuki ,  Isao Nunokawa

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3163 ,  Y10T29/49032

    摘要： Embodiments of the invention provide an easy-to-fabricate magnetic head which can generate a high magnetic field without eliminating adjacent tracks even if a skew angle is created. In one embodiment, a structure which comprises a pole tip of main pole exposed on the air bearing surface, a part which is recessed from the air bearing surface and having a tapered face at leading side against the air bearing surface, and a magnetic material connected thereto is adopted for the main pole.

    摘要翻译： 本发明的实施例提供了一种易于制造的磁头，即使产生偏斜角，也可以产生高磁场而不消除相邻轨迹。 在一个实施例中，包括暴露在空气轴承表面上的主极极极端部的结构，从空气轴承表面凹陷并且在前侧抵靠空气轴承表面具有锥形面的部分，以及连接有磁性材料的磁性材料 主杆采用。

    METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC RECORDING HEAD
    23.
    发明申请
    METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC RECORDING HEAD 有权
    一种完整的磁记录头的制造方法

    公开(公告)号：US20090313811A1

    公开(公告)日：2009-12-24

    申请号：US12487306

    申请日：2009-06-18

    申请人： Toshio Takahashi ,  Akihiro Nanba ,  Masafumi Mochizuki

    发明人： Toshio Takahashi ,  Akihiro Nanba ,  Masafumi Mochizuki

    IPC分类号： H04R31/00

    CPC分类号： G11B5/1278 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3173 ,  G11B5/3967 ,  Y10T29/49036 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/4906

    摘要： In a manufacturing process of a head slider according to one embodiment, a flare point height of a main pole is estimated according to the following procedure. Magnetic field intensity is measured by a sensor, and a maximum point of the magnetic field is assumed as a center of the main pole. The measurement is moved from the center point along a Z direction, such that a measurement value corresponds to a reference value. An attenuation rate (a gradient) of a measurement value of magnetic field intensity to displacement in the Z direction of the measurement point is calculated and normalized with the measurement value, and plotted with respect to the measurement value itself. The gradient is compared to a gradient in a database of samples being separately prepared, each sample having known flare point height, allowing an estimation of the flare point height of the said sample from the comparison.

    摘要翻译： 在根据一个实施例的磁头滑块的制造过程中，根据以下过程来估计主极的耀斑高度。 磁场强度由传感器测量，磁场的最大点被认为是主极的中心。 测量从中心点沿Z方向移动，使得测量值对应于参考值。 计算测量点的Z方向的磁场强度测量值与位移的衰减率（梯度），并用测量值对其进行归一化，并相对于测量值本身绘制。 将梯度与分别制备的样品的数据库中的梯度进行比较，每个样品具有已知的光斑高度，允许从比较中估计所述样品的耀斑高度。

    Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle
    24.
    发明授权
    Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle 失效
    具有可调节机构的磁盘装置，用于补偿具有偏航角的偏离跟踪位置的写入或加热元件

    公开(公告)号：US07545595B2

    公开(公告)日：2009-06-09

    申请号：US11354912

    申请日：2006-02-16

    申请人： Takehiko Hamaguchi ,  Atsushi Nakamura ,  Yasutaka Nishida ,  Masafumi Mochizuki ,  Hideki Sawaguchi

    发明人： Takehiko Hamaguchi ,  Atsushi Nakamura ,  Yasutaka Nishida ,  Masafumi Mochizuki ,  Hideki Sawaguchi

    IPC分类号： G11B5/02

    CPC分类号： G11B5/6005 ,  G11B5/012 ,  G11B5/105 ,  G11B5/127 ,  G11B5/1272 ,  G11B5/2654 ,  G11B5/4886 ,  G11B5/56 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally heat the disk; a write element in the head to apply a magnetic field to the disk; and means for selecting at least one heat element from the plural heat elements, wherein the means for selecting the heat element selects at least one heat element from the plural heat elements so as to bring a center line of an area heated by the heat element and a center line of the position of the magnetic field generated by the write element into approximate correspondence, in correspondence with a relative angle between the head and a direction of movement of the disk.

    摘要翻译： 一种磁盘装置，包括：磁盘，其将数据作为磁性信息保存在磁记录膜上; 执行写入和读取磁信息的头部; 旋转致动器，用于沿着盘的径向方向移动头部; 头部中的多个热元件以局部加热盘; 磁头中的一个写元件将磁场施加到磁盘上; 以及用于从所述多个加热元件中选择至少一个加热元件的装置，其中用于选择所述加热元件的装置从所述多个加热元件中选择至少一个加热元件，以使得由所述加热元件加热的区域的中心线，以及 由写入元件产生的磁场的位置的中心线对应于磁头与磁盘的移动方向之间的相对角度相对应。

    Magnetic head and magnetic disk storage apparatus mounting the head
    27.
    发明授权
    Magnetic head and magnetic disk storage apparatus mounting the head 失效
    安装磁头的磁头和磁盘存储装置

    公开(公告)号：US07426092B2

    公开(公告)日：2008-09-16

    申请号：US11173730

    申请日：2005-06-30

    申请人： Hiroshi Fukui ,  Masafumi Mochizuki ,  Kaori Suzuki

    发明人： Hiroshi Fukui ,  Masafumi Mochizuki ,  Kaori Suzuki

    IPC分类号： G11B5/127

    CPC分类号： G11B5/127

    摘要： Embodiments of the invention provide a magnetic head which prevents data on a recording medium from being erased even when a stray field is applied. In one embodiment, an auxiliary pole is sandwiched between a stray-field shield composed of a magnetic layer recessed from the air bearing surface and a main pole. The stray-field shield may be formed on the leading side of the auxiliary pole. A face of the stray-field shield on a medium side may be recessed from an air-bearing-surface of the magnetic head.

    摘要翻译： 本发明的实施例提供一种磁头，即使当施加杂散场时也防止记录介质上的数据被擦除。 在一个实施例中，辅助极被夹在由空气支承表面凹入的磁性层和主极之间的杂散场屏蔽之间。 杂散场屏蔽可以形成在辅助极的前导侧。 介质侧的杂散屏蔽层的表面可以从磁头的空气轴承表面凹入。

    Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it
    28.
    发明申请
    Thin film perpendicular magnetic recording head, their fabrication process and magnetic disk drive using it 失效
    薄膜垂直磁记录头，其制造工艺和使用它的磁盘驱动器

    公开(公告)号：US20070217066A1

    公开(公告)日：2007-09-20

    申请号：US11802297

    申请日：2007-05-22

    申请人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

    发明人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3906 ,  G11B5/1278

    摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe (oersted), while also modified to suppress remanent magnetic fields occurring immediately after writing operation. In a perpendicular magnetic head comprising a main pole, a return path for supplying a magnetic flux to that main pole, and an conductive coil for excitation of the main pole and return path, the main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer, the low saturation flux density layer has a thickness within 0.5 to 5 nanometers, the high saturation flux density layer has a thickness from 10 to 50 nanometers for suppressing remanent magnetization and preventing erasing after writing by utilizing a closed magnetic domain structure in the pole.

    摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生超过10kOe（奥斯特）的高磁记录场，同时还被修改以抑制写入后立即发生的残留磁场 操作。 在包括主极，用于向该主极提供磁通的返回路径和用于激励主极返回路径的导电线圈的垂直磁头中，主极的极宽为200纳米以下， 以及由高饱和磁通密度层和低饱和磁通密度层组成的磁性层，低饱和磁通密度层的厚度在0.5〜5纳米之间，高饱和磁通密度层的厚度为10〜50纳米， 通过利用极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。

    Magnetic head for perpendicular recording including a main pole having a pole tip with three tapered sides
    30.
    发明授权
    Magnetic head for perpendicular recording including a main pole having a pole tip with three tapered sides 失效
    用于垂直记录的磁头，包括具有三个锥形侧面的极尖的主极

    公开(公告)号：US07038881B2

    公开(公告)日：2006-05-02

    申请号：US10648344

    申请日：2003-08-27

    申请人： Kenchi Ito ,  Yoshiaki Kawato ,  Masafumi Mochizuki

    发明人： Kenchi Ito ,  Yoshiaki Kawato ,  Masafumi Mochizuki

    IPC分类号： G11B5/187 ,  G11B5/39

    CPC分类号： G11B5/012 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/4886 ,  G11B2005/0029 ,  Y10T29/49052

    摘要： The invention provides a magnetic head for perpendicular recording capable of recording with high linear recording density and high track density, and a magnetic disk drive incorporating the same. In order to achieve this, one or more sides of the main pole of the magnetic head for perpendicular recording except for the trailing side are formed in a taper with an appropriate angle against the tip surface of the main pole, and the yoke whose widest principal plane is in parallel to the tip surface is provided on the bottom of the main pole.Thereby, the invention achieves the magnetic head for perpendicular recording that generates a sufficiently high magnetic field, and assumes a sharp gradient of magnetic field on the trailing side. By incorporating this magnetic head, a magnetic disk drive capable of handling high linear recording density can be produced.

    摘要翻译： 本发明提供一种用于能够以高线性记录密度和高轨道密度进行记录的垂直记录磁头和包含该磁头的磁盘驱动器。 为了实现这一点，用于垂直记录的磁头的主极的除了后侧之外的一个或多个侧面以相对于主极的尖端表面具有适当角度的锥形形成，并且最主要的轭 平面与顶表面平行设置在主极的底部。 因此，本发明实现了用于垂直记录的磁头，其产生足够高的磁场，并且在后侧呈现尖锐的磁场梯度。 通过并入该磁头，可以产生能够处理高线性记录密度的磁盘驱动器。