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    Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same
    1.
    发明授权
    Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same 失效
    具有凹部的磁头，以及包括该磁头的磁记录和再现装置

    公开(公告)号：US07483243B2

    公开(公告)日：2009-01-27

    申请号：US11252913

    申请日：2005-10-17

    申请人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Kaori Suzuki

    发明人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Kaori Suzuki

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278

    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, a magnetic head includes a perpendicular write head having a main pole and an auxiliary pole; and a read head having a lower shield, an upper shield and a magneto-resistive element formed between the lower shield and the upper shield. At least one of the auxiliary pole, lower shield and upper shield has a recessed portion, whose height in an element height direction is lower than the height of edges thereof in a track width direction, on a surface opposite to the air bearing surface.

    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，磁头包括具有主极和辅助极的垂直写入头; 以及具有下屏蔽，上屏蔽和形成在下屏蔽和上屏蔽之间的磁阻元件的读头。 辅助杆，下护罩和上护罩中的至少一个在与空气轴承表面相对的表面上具有在元件高度方向上的高度低于轨道宽度方向上的边缘的高度的凹部。

    Magnetic head and magnetic disk storage apparatus mounting the head
    5.
    发明申请
    Magnetic head and magnetic disk storage apparatus mounting the head 有权
    安装磁头的磁头和磁盘存储装置

    公开(公告)号：US20070188921A1

    公开(公告)日：2007-08-16

    申请号：US11707804

    申请日：2007-02-15

    申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

    发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3163

    摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the effective track width can be decreased without reducing the write-field intensity and a variation of the track width can be decreased. A main pole consists of a pole tip having a part which provides the write track-width and a yoke part recessed from the air beating surface in the element height direction, and the pole tip consists of a pole tip at the trailing side where the width in the track-width direction is large and a pole tip at the leading side where the width in the track width direction is small. Moreover, the throat height of the pole tip at the trailing side is made greater than the throat height of the pole tip at the leading side.

    摘要翻译： 根据本发明的实施例提供一种磁头，其中可以在不降低写入场强度的情况下降低有效磁道宽度的扩大，并且可以减小磁道宽度的变化。 主极包括具有提供写入轨道宽度的部分的极尖和在元件高度方向上从空气打浆表面凹陷的轭部，并且极尖由在后侧的极尖组成，其中宽度 在轨道宽度方向上较大，并且在轨道宽度方向上的宽度小的前端的极尖。 此外，使尾端在后侧的喉部高度大于前端的极尖的喉部高度。

    Magnetic head and magnetic disk storage apparatus mounting the head
    6.
    发明授权
    Magnetic head and magnetic disk storage apparatus mounting the head 有权
    安装磁头的磁头和磁盘存储装置

    公开(公告)号：US07848053B2

    公开(公告)日：2010-12-07

    申请号：US11707804

    申请日：2007-02-15

    申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

    发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3163

    摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the effective track width can be decreased without reducing the write-field intensity and a variation of the track width can be decreased. A main pole consists of a pole tip having a part which provides the write track-width and a yoke part recessed from the air beating surface in the element height direction, and the pole tip consists of a pole tip at the trailing side where the width in the track-width direction is large and a pole tip at the leading side where the width in the track width direction is small. Moreover, the throat height of the pole tip at the trailing side is made greater than the throat height of the pole tip at the leading side.

    摘要翻译： 根据本发明的实施例提供一种磁头，其中可以在不降低写入场强度的情况下降低有效磁道宽度的扩大，并且可以减小磁道宽度的变化。 主极包括具有提供写入轨道宽度的部分的极尖和在元件高度方向上从空气打浆表面凹陷的轭部，并且极尖由在后侧的极尖组成，其中宽度 在轨道宽度方向上较大，并且在轨道宽度方向上的宽度小的前端的极尖。 此外，使尾端在后侧的喉部高度大于前端的极尖的喉部高度。

    Magnetic head and magnetic disk storage apparatus mounting the head
    7.
    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。

    Magnetic head and magnetic disk storage apparatus mounting the head
    8.
    发明申请
    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：US20060002018A1

    公开(公告)日：2006-01-05

    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。

    Perpendicular magnetic recording head for high frequency drive
    10.
    发明授权
    Perpendicular magnetic recording head for high frequency drive 失效
    垂直磁记录头用于高频驱动

    公开(公告)号：US07646564B2

    公开(公告)日：2010-01-12

    申请号：US11371609

    申请日：2006-03-08

    申请人： Yoji Maruyama ,  Hideki Zaitsu ,  Ichiro Ohdake ,  Kazue Kudo ,  Masafumi Mochizuki

    发明人： Yoji Maruyama ,  Hideki Zaitsu ,  Ichiro Ohdake ,  Kazue Kudo ,  Masafumi Mochizuki

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

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

    摘要： Embodiments of the invention provide a perpendicular magnetic head with a narrow track and excellent high frequency characteristics. In one embodiment, a recording magnetic head includes coil conductors and magnetic pole pieces putting the same therebetween, in which a main magnetic pole piece is formed into a planar structure and a magnetic film connected with the main magnetic pole piece in a magnetic coupling relation is curved in the direction of the film thickness. Further, a shield material disposed near the main magnetic pole piece is made of a material of higher resistance than that of the material for the read shield.

    摘要翻译： 本发明的实施例提供一种具有窄轨迹和优异的高频特性的垂直磁头。 在一个实施例中，记录磁头包括线圈导体和放置在其间的磁极片，其中主磁极片形成为平面结构，并且与主磁极片以磁耦合关系连接的磁膜为 在膜厚度方向上弯曲。 此外，设置在主磁极片附近的屏蔽材料由比用于读屏蔽材料的电阻高的材料制成。