公开(公告)号：US07142392B2

公开(公告)日：2006-11-28

申请号：US11002498

申请日：2004-12-03

申请人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

发明人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

IPC分类号： G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996

摘要： A thin film head having reading part and recording part having an upper magnetic pole front end layer and a lower magnetic pole having a lower magnetic main layer, a lower magnetic pole front end portion on the lower magnetic main layer, and a projection step portion on the lower magnetic pole front end portion. The upper magnetic pole front end layer has a magnetic pole expansion position and a length from an air bearing surface to the magnetic pole expansion position is less than a length from the air bearing surface to gap depth position of the lower magnetic pole front end portion.

摘要翻译： 具有读取部分的薄膜头和具有上磁极前端层的记录部分和具有下磁性主层的下磁极，下磁性主体层上的下磁极前端部分和在下磁性主体层上的突出台阶部分 下磁极前端部分。 上磁极前端层具有磁极膨胀位置，从空气支承面到磁极伸长位置的长度小于从下侧磁极前端部的空气轴承面到间隙深度位置的长度。

公开(公告)号：US07142391B2

公开(公告)日：2006-11-28

申请号：US09943507

申请日：2001-08-31

申请人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

发明人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

IPC分类号： G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996

摘要： A lower magnetic pole front end portion is provided on a lower magnetic pole main layer, and then, an upper magnetic pole front end portion or an upper magnetic pole front end layer is formed on the flat surface so as to enhance the track width accuracy of thin film head. The height of the lower magnetic pole front end portion is increased so as to enhance the magnetic field intensity. A projection step portion having a width larger than that of the upper magnetic pole front end layer is provided on the lower magnetic pole front end portion. The unnecessary medium in-plane magnetic field can be thus reduced in the off-track position. The respective parts of the head are corrected, thereby realizing a high recording magnetic field intensity exceeding 716 kA/m (9000Oe).

摘要翻译： 下磁极前端部设置在下磁极主层上，然后在平面上形成上磁极前端部或上磁极前端层，以提高轨道宽度精度 薄膜头。 下磁极前端部的高度增加，从而提高磁场强度。 具有比上磁极前端层宽的宽度的突出台阶部分设置在下磁极前端部分上。 因此，在离轨位置上可以减少不必要的介质平面内磁场。 头部的各部分被校正，从而实现超过716kA / m（9000Oe）的高记录磁场强度。

公开(公告)号：US07042677B2

公开(公告)日：2006-05-09

申请号：US10666876

申请日：2003-09-18

申请人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Nobuo Yoshida

发明人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Nobuo Yoshida

IPC分类号： G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/332 ,  G11B5/3967 ,  G11B2005/3996

摘要： A protrusion 24 having a width Lpfw equal to or somewhat larger than a track width Tw and protruding to the air bearing surface is provided on a lower magnetic pole 5 or lower magnetic pole front end layer 19. The lower magnetic pole 5 or the lower magnetic pole front end layer 19 other than the protrusion is retracted by Lpfd from the air bearing surface 15. With the constitution, since the upper end surface 23 of the lower magnetic pole 5 or the lower magnetic pole to end layer 19 that generates the leakage magnetic fields in the off-track portions is not exposed to the air bearing surface 15, the leakage magnetic fields Hxz in the off-track portions can be decreased greatly.

摘要翻译： 在下磁极5或下磁极前端层19上设置有宽度Lpfw等于或略大于磁道宽度Tw并突出到空气轴承表面的突起24。 除了突起之外的下磁极5或下磁极前端层19从空气轴承表面15缩回Lpfd。 利用该结构，由于在偏离磁道部分中产生泄漏磁场的下磁极5的上端面23或下磁极至端层19不暴露于空气轴承表面15，因此泄漏磁 离轨部分的场Hxz可以大大降低。

公开(公告)号：US06791795B2

公开(公告)日：2004-09-14

申请号：US10219283

申请日：2002-08-16

申请人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

发明人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

IPC分类号： G11B5147

CPC分类号： G11B5/313 ,  G11B5/3109 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/3967 ,  Y10S977/934 ,  Y10S977/935

摘要： A lower magnetic pole front end layer is formed on a lower magnetic pole main layer, and a lower magnetic pole projection layer, a recording gap layer and an upper magnetic pole front end layer each having substantially the same planar shape are formed on a planar surface of the lower magnetic pole front end layer. Trimming of a lower electrode is not necessary, and track width accuracy can be drastically improved because a resist frame is formed on the planar surface. A length of the upper magnetic pole front end layer from an air bearing surface to a head rear direction is greater than a length of the lower magnetic pole front end layer, and the rear end portion of the lower magnetic pole front end layer substantially defines a gap depth.

摘要翻译： 在下磁极主层上形成下磁极前端层，在平面上形成有各自具有大致相同的平面形状的下磁极投影层，记录间隙层和上磁极前端层 的下磁极前端层。 不需要修整下电极，并且由于在平坦表面上形成抗蚀剂框架，所以可以显着提高轨道宽度精度。 上磁极前端层从空气轴承表面到头后方的长度大于下磁极前端层的长度，下磁极前端层的后端部分基本上限定为 间隙深度。

公开(公告)号：US20050078412A1

公开(公告)日：2005-04-14

申请号：US11002498

申请日：2004-12-03

申请人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

发明人： Shigekazu Ohtomo ,  Moriaki Fuyama ,  Nobuo Yoshida ,  Hiroshi Fukui

IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/33 ,  G11B5/39 ,  G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996

摘要： A thin film head having reading part and recording part having an upper magnetic pole front end layer and a lower magnetic pole having a lower magnetic main layer, a lower magnetic pole front end portion on the lower magnetic main layer, and a projection step portion on the lower magnetic pole front end portion. The upper magnetic pole front end layer has a magnetic pole expansion position and a length from an air bearing surface to the magnetic pole expansion position is less than a length from the air bearing surface to gap depth position of the lower magnetic pole front end portion.

摘要翻译： 具有读取部分的薄膜头和具有上磁极前端层的记录部分和具有下磁性主层的下磁极，下磁性主体层上的下磁极前端部分和在下磁性主体层上的突出台阶部分 下磁极前端部分。 上磁极前端层具有磁极膨胀位置，从空气支承面到磁极伸长位置的长度小于从下侧磁极前端部的空气轴承面到间隙深度位置的长度。

公开(公告)号：US07310203B2

公开(公告)日：2007-12-18

申请号：US10237860

申请日：2002-09-10

申请人： Nobuo Yoshida ,  Ichiro Oodake ,  Moriaki Fuyama ,  Kazue Kudo ,  Kimitoshi Etoh ,  Shigekazu Ohtomo ,  Hiroshi Fukui

发明人： Nobuo Yoshida ,  Ichiro Oodake ,  Moriaki Fuyama ,  Kazue Kudo ,  Kimitoshi Etoh ,  Shigekazu Ohtomo ,  Hiroshi Fukui

IPC分类号： G11B5/47

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  Y10T29/49046

摘要： There is provided a thin film magnetic head, with letting a distance of a portion, where a width of a track portion in an upper magnetic pole changes, from a flying plane from a medium be Ly, and letting a distance of a portion, where a distance between right and left of a surface portion in a lower magnetic pole in a track width direction is wider than the width of the upper magnetic pole in the track width direction, from the flying plane from a medium be Tp, by creating a thin film magnetic head that is equipped with a recording head that has a relation of Tp≦Ly, it becomes possible to reduce a needless leakage magnetic field in the track width direction with securing magnetic field strength.

摘要翻译： 提供了一种薄膜磁头，其中使上部磁极中的轨道部分的宽度从介质的飞行平面改变的部分的距离为Ly，并且使一部分的距离在其中 在轨道宽度方向上的下磁极中的表面部分的左右之间的距离比通过轨道宽度方向上的上磁极的宽度，从介质的飞行平面变为Tp，通过产生薄的 配备有具有Tp <= Ly关系的记录头的胶片磁头，可以确保磁场强度而减小轨道宽度方向上不必要的泄漏磁场。

公开(公告)号：US07821737B2

公开(公告)日：2010-10-26

申请号：US11486802

申请日：2006-07-14

申请人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Toshimi Yokoyama

发明人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Toshimi Yokoyama

IPC分类号： G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967

摘要： Embodiments of the invention provide a thin film magnetic head suitable for high density recording having a small erase band ΔE and a small fringe magnetic field, and a large recording magnetic field. In one embodiment, a width LW of a lower magnetic pole piece protuberance of a leading side magnetic pole piece, at a face in contact with a write gap layer, is made smaller than a width TW of an upper magnetic pole piece front layer of a trailing side magnetic pole piece, at a face in contact with the write gap layer, and the width of the lower magnetic pole piece protuberance adjacent to the write gap layer is made larger, in a direction from the write gap layer.

摘要翻译： 本发明的实施例提供一种适用于高密度记录的薄膜磁头，其具有小的擦除带＆Dgr; E和小的边缘磁场以及大的记录磁场。 在一个实施例中，使前侧磁极片的下磁极片突起在与写间隙层接触的面处的宽度LW小于上述磁极片前层的宽度TW 在与写入间隙层接触的面处的后侧磁极片和与写入间隙层相邻的下部磁极片突起的宽度在从写入间隙层的方向上变大。

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。

公开(公告)号：US20070019326A1

公开(公告)日：2007-01-25

申请号：US11486802

申请日：2006-07-14

申请人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Toshimi Yokoyama

发明人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Toshimi Yokoyama

IPC分类号： G11B5/147

CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967

摘要： Embodiments of the invention provide a thin film magnetic head suitable for high density recording having a small erase band ΔE and a small fringe magnetic field, and a large recording magnetic field. In one embodiment,a width LW of a lower magnetic pole piece protuberance of a leading side magnetic pole piece, at a face in contact with a write gap layer, is made smaller than a width TW of an upper magnetic pole piece front layer of a trailing side magnetic pole piece, at a face in contact with the write gap layer, and the width of the lower magnetic pole piece protuberance adjacent to the write gap layer is made larger, in a direction from the write gap layer.

摘要翻译： 本发明的实施例提供一种适用于具有较小擦除带DeltaE和小条纹磁场以及大的记录磁场的高密度记录的薄膜磁头。 在一个实施例中，使前侧磁极片的下磁极片突起在与写间隙层接触的面处的宽度LW小于上述磁极片前层的宽度TW 在与写入间隙层接触的面处的后侧磁极片和与写入间隙层相邻的下部磁极片突起的宽度在从写入间隙层的方向上变大。

公开(公告)号：US20120121982A1

公开(公告)日：2012-05-17

申请号：US13387242

申请日：2010-07-29

申请人： Yukinari Harimoto ,  Hiroshi Fukui ,  Takakazu Hino

发明人： Yukinari Harimoto ,  Hiroshi Fukui ,  Takakazu Hino

IPC分类号： H01M4/134 ,  H01M4/60 ,  H01B1/04 ,  B82Y30/00

CPC分类号： H01M4/587 ,  H01G11/02 ,  H01G11/24 ,  H01G11/32 ,  H01G11/38 ,  H01G11/44 ,  H01G11/86 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/386 ,  H01M10/052 ,  Y02E60/13

摘要： An electrode active material comprising a silicon-containing carbon-based composite material obtained by: preparing a cured product of (A) a silicon-free organic compound having a crosslinkable group, and (B) a silicon-containing compound capable of crosslinking the component (A); and baking the cured product in an inert gas or in a vacuum at 300 to 1,500° C.; an electrode comprising the electrode active material; and an electricity storage device comprising the electrode. The electrode active material has high reversible capacity and stable charge and discharge cycle characteristics, has little electrical potential loss when lithium is discharged, and furthermore, can be manufactured via a simple manufacturing process. Therefore, an electrode active material that is particularly suitable for an electrode of a lithium secondary battery can be provided, and an electricity storage device having an electrode comprising the electrode active material can also be provided.

摘要翻译： 一种含有含硅碳基复合材料的电极活性材料，其特征在于：制备（A）具有交联性基团的无硅有机化合物的固化物，和（B）能够使成分交联的含硅化合物 （一个）; 并在惰性气体中或在300〜1500℃的真空中烘烤固化物。 包含所述电极活性材料的电极; 以及包括所述电极的蓄电装置。 电极活性物质具有高的可逆容量和稳定的充放电循环特性，当锂排出时电位损失小，此外，可以通过简单的制造工艺制造。 因此，可以提供特别适用于锂二次电池的电极的电极活性材料，并且还可以提供具有包含电极活性材料的电极的蓄电装置。