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    PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE SUITABLE FOR HIGH-DENSITY MAGNETIC RECORDING
    1.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING DEVICE SUITABLE FOR HIGH-DENSITY MAGNETIC RECORDING 有权
    适用于高密度磁记录的全磁记录磁头和磁记录装置

    公开(公告)号：US20110002063A1

    公开(公告)日：2011-01-06

    申请号：US12827999

    申请日：2010-06-30

    申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

    发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Tetsuya Okai ,  Hiromi Shiina ,  Kazue Kudo

    IPC分类号： G11B21/02 ,  G11B5/33

    CPC分类号： G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    摘要： According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole having a trailing side and two lateral sides, a magnetic shield near the trailing side and both lateral sides of the main magnetic pole, the magnetic shield comprising: a first soft magnetic film with a relatively high saturation flux density positioned facing depthwise from a floating surface side thereof, a second soft magnetic film with a relatively low saturation flux density, and a first non-magnetic film. The head also includes a non-magnetic film interposed between the magnetic shield and the main magnetic pole, a first magnetic film magnetically coupled to the magnetic shield and the main magnetic pole on a side opposite a floating surface side thereof, and a coil surrounding a magnetic circuit, the magnetic circuit comprising the main magnetic pole and the first magnetic film. Other systems and methods are also described.

    摘要翻译： 根据一个实施例，垂直磁记录头包括具有后侧和两个侧面的主磁极，靠近主磁极的后侧和两侧的磁屏蔽，磁屏蔽包括：第一软磁 具有从其浮动表面侧朝向深度方向定位的相对较高的饱和磁通密度的膜，具有相对低的饱和磁通密度的第二软磁膜和第一非磁性膜。 头部还包括插入在磁屏蔽和主磁极之间的非磁性膜，磁性地耦合到磁屏蔽的第一磁性膜和与其浮动表面侧相对的一侧的主磁极，以及围绕 所述磁路包括所述主磁极和所述第一磁性膜。 还描述了其它系统和方法。

    Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the same
    4.
    发明授权
    Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the same 失效
    用于减小浮体表面上取出和写入单元的投影的磁头，以及使用其的磁记录/回收装置

    公开(公告)号：US07064925B2

    公开(公告)日：2006-06-20

    申请号：US10656582

    申请日：2003-09-05

    申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Takashi Kawabe ,  Makoto Morijiri ,  Hiroshi Fukui

    发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Takashi Kawabe ,  Makoto Morijiri ,  Hiroshi Fukui

    IPC分类号： G11B5/39 ,  G11B5/187

    CPC分类号： G11B5/3136 ,  G11B5/3106 ,  G11B5/6005

    摘要： A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in response to the electric signal, and a first protective film formed on the retrieving unit. A second protective film is formed on the first protective film. The coefficient of linear expansion of the second protective film is reduced in comparison with that of the first protective film. Furthermore, the first protective film is an alumina film; in contrast, the second protective film is a film made of an alumina film containing silicon oxide therein.

    摘要翻译： 磁头包括用于将从记录介质输出的磁信息转换为电信号的检索单元，具有电磁转换功能的写入单元，用于响应于电信号将磁信息写入记录介质中;以及第一保护 在检索单元上形成的胶片。 在第一保护膜上形成第二保护膜。 与第一保护膜相比，第二保护膜的线膨胀系数降低。 此外，第一保护膜是氧化铝膜; 相反，第二保护膜是由其中含有氧化硅的氧化铝膜制成的膜。

    Magnetic head and method of manufacturing the same
    6.
    发明申请
    Magnetic head and method of manufacturing the same 有权
    磁头及其制造方法

    公开(公告)号：US20080198507A1

    公开(公告)日：2008-08-21

    申请号：US12070155

    申请日：2008-02-15

    申请人： Yoji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

    发明人： Yoji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

    IPC分类号： G11B5/17

    CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    摘要： Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films called side shields are separately disposed through a nonmagnetic film on both sides of the main pole. The air bearing surface side end of the first soft magnetic film is provided to recede from the air bearing surface. The first soft magnetic film and the main pole are formed in the same layer. A second soft magnetic film called a trailing shield is provided above the main pole on the air bearing surface side via a nonmagnetic film.

    摘要翻译： 本发明的实施例有助于抑制垂直记录头的主极的写入场的扩展，并且实现高质量的写入操作。 根据一个实施例，写入头的主极延伸到空气轴承表面或中等的表面，并且具有横截面的倒梯形。 称为侧屏的第一软磁膜通过主极两侧的非磁性膜分开设置。 第一软磁性膜的空气轴承面侧端设置为从空气轴承面退回。 第一软磁膜和主极形成在同一层中。 被称为后挡板的第二软磁膜通过非磁性膜设置在空气支承面侧的主极上方。

    Thin film magnetic head
    7.
    发明授权
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：US07061726B2

    公开(公告)日：2006-06-13

    申请号：US10667232

    申请日：2003-09-18

    申请人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Sunao Yonekawa ,  Yoji Maruyama ,  Tadayuki Iwakura

    发明人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Sunao Yonekawa ,  Yoji Maruyama ,  Tadayuki Iwakura

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3916

    摘要： A magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less is used for forming at least one of a lower shield or an upper shield. A laminated film comprising a layer of the magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less, and an 80 wt % NiFe alloy layer, is used for forming at least one of the lower shield and the upper shield. Thus, the thin film magnetic head having reduced after-record noise and reduced thermal protrusion can be obtained.

    摘要翻译： 使用具有11.5×10 -6 / K或更小的热膨胀系数低的磁性材料来形成下屏蔽或上屏蔽中的至少一个。 使用包含具有11.5×10 -6 / K以下的低热膨胀系数的磁性材料层和80重量％的NiFe合金层的层叠膜，以形成至少一个 的下屏蔽和上屏蔽。 因此，可以获得具有降低的记录后噪声和降低的热突起的薄膜磁头。

    Magnetic write head
    8.
    发明申请
    Magnetic write head 失效
    磁写头

    公开(公告)号：US20050122622A1

    公开(公告)日：2005-06-09

    申请号：US10956976

    申请日：2004-09-30

    申请人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

    发明人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

    IPC分类号： G11B5/31 ,  G11B5/147

    CPC分类号： G11B5/147

    摘要： In one embodiment, a thin-film magnetic head with a write head has a lower core member made of a soft magnetic film, a planar upper core member made of a soft magnetic film, and a coil conductor positioned between the lower and upper core members. The rear end is equipped with a magnetic body, which at least magnetically joins the lower and upper core members. A magnetic pole piece is in contact with the lower core member and positioned toward an air bearing surface, which faces a recording medium. A first nonmagnetic film is provided between a pedestal magnetic pole piece and upper core member. The write head is structured so that the first nonmagnetic film constitutes a write gap. A second nonmagnetic film is provided above or below the first nonmagnetic film. The edge of the second nonmagnetic film is retracted from the air bearing surface. The upper core member's flare point is positioned toward the air bearing surface rather than the edge of the second nonmagnetic film.

    摘要翻译： 在一个实施例中，具有写头的薄膜磁头具有由软磁膜制成的下芯构件，由软磁膜制成的平面上芯构件和位于下芯体和上芯体之间的线圈导体 。 后端配备有至少磁性地连接下部和上部芯部构件的磁性体。 磁极片与下芯部件接触并朝向面向记录介质的空气轴承表面定位。 第一非磁性膜设置在基座磁极片和上芯部件之间。 写头被构造成使得第一非磁性膜构成写入间隙。 在第一非磁性膜的上方或下方设置第二非磁性膜。 第二非磁性膜的边缘从空气支承表面缩回。 上芯体的扩口位于空气轴承表面而不是第二非磁性膜的边缘。

    Main pole structure coupled with trailing gap for perpendicular recording
    10.
    发明授权
    Main pole structure coupled with trailing gap for perpendicular recording 失效
    主杆结构与垂直记录的拖尾间隙相结合

    公开(公告)号：US07551395B2

    公开(公告)日：2009-06-23

    申请号：US11492378

    申请日：2006-07-24

    申请人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

    发明人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146

    摘要： A magnetic head with a narrow track width angle and of excellent mass productivity is provided for attaining a large capacity magnetic disk drive. In an embodiment, a perpendicular recording magnetic head includes: a first non-magnetic film and a first soft magnetic film stacked on the trailing side of a main magnetic pole piece for constituting a gap film; a second non-magnetic layer in contact with the end face of the first non-magnetic layer on both sides of the main magnetic pole piece; a third soft magnetic film in contact with the second non-magnetic layer on both sides of the main magnetic pole piece; and a second soft magnetic film in contact with the first soft magnetic film and the third soft magnetic film on the trailing side of the main magnetic pole.

    摘要翻译： 为了获得大容量磁盘驱动器，提供了具有窄轨道宽度角和优异的批量生产率的磁头。 在一个实施例中，垂直记录磁头包括：第一非磁性膜和第一软磁膜，堆叠在用于构成间隙膜的主磁极片的后侧; 与主磁极片两侧的第一非磁性层的端面接触的第二非磁性层; 与主磁极片两侧的第二非磁性层接触的第三软磁性膜; 以及与主磁极的后侧上的第一软磁膜和第三软磁膜接触的第二软磁膜。