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1.发明授权Magnetic head to prevent undesired data erasure and magnetic disk storage having the same 失效磁头，以防止不必要的数据擦除和具有相同的磁盘存储公开(公告)号：US07542244B2
公开(公告)日：2009-06-02
申请号：US11252866
申请日：2005-10-17
IPC分类号： G11B5/127
CPC分类号： G11B5/1278
摘要： Embodiments of the invention provide a magnetic head (magnetic disk storage) which does not erase data on a recording medium even when a stray field is applied. In one embodiment, the head has a structure that d1
摘要翻译： 本发明的实施例提供一种磁头（磁盘存储），即使在施加杂散场时也不会在记录介质上擦除数据。 在一个实施例中，头部具有d1 =
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2.发明申请Magnetic head to prevent undesired data erasure and magnetic disk storage having the same 失效磁头，以防止不必要的数据擦除和具有相同的磁盘存储公开(公告)号：US20060082930A1
公开(公告)日：2006-04-20
申请号：US11252866
申请日：2005-10-17
CPC分类号： G11B5/1278
摘要： Embodiments of the invention provide a magnetic head (magnetic disk storage) which does not erase data on a recording medium even when a stray field is applied. In one embodiment, the head has a structure that d1
摘要翻译： 本发明的实施例提供一种磁头（磁盘存储），即使在施加杂散场时也不会在记录介质上擦除数据。 在一个实施例中，头部具有d1 =
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3.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。
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公开(公告)号：US07848053B2
公开(公告)日：2010-12-07
申请号：US11707804
申请日：2007-02-15
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。
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公开(公告)号：US20060082931A1
公开(公告)日：2006-04-20
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.
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公开(公告)号：US20070188921A1
公开(公告)日：2007-08-16
申请号：US11707804
申请日：2007-02-15
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。
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公开(公告)号：US07061726B2
公开(公告)日：2006-06-13
申请号：US10667232
申请日：2003-09-18
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。
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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。
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公开(公告)号：US20070211382A1
公开(公告)日：2007-09-13
申请号：US11707415
申请日：2007-02-15
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1872 , G11B5/3146
摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the write-field distribution in the track-width direction can be decreased without reducing the write-field intensity. A main pole includes a pole tip having a part which provides the write track-width and a yoke part recessed from the air bearing surface in the element height direction, the pole tip including at least two magnetic films having different track-width directions, and the throat height at the trailing side being made smaller than the throat height at the leading side.
摘要翻译： 根据本发明的实施例提供一种磁头，其中可以减小磁道宽度方向上的写入场分布的扩大，而不降低写入场强度。 主极包括具有提供写入轨道宽度的部分的磁极尖端和在元件高度方向上从空气轴承表面凹陷的磁轭部分，磁极末端包括具有不同轨道宽度方向的至少两个磁性膜，以及 在后侧的喉部高度小于前侧的喉部高度。
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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。
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