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1. 发明授权

US07436633B2 Thin-film magnetic head, head gimbal assembly and hard disk system 有权
标题翻译：薄膜磁头，磁头万向架组件和硬盘系统
公开(公告)号：US07436633B2
公开(公告)日：2008-10-14
申请号：US11205072
申请日：2005-08-17
申请人： Hiroshi Kiyono , Tetsuya Kuwashima , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Nozomu Hachisuka
发明人： Hiroshi Kiyono , Tetsuya Kuwashima , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Nozomu Hachisuka
IPC分类号： G11B5/245
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/31 , G11B5/3912 , G11B5/3967 , G11B5/4826 , G11B2005/3996
摘要： A parasitic capacity C4 generated between a slider substrate and the first shield layer with the first insulating layer as a capacity layer is made substantially equal to a parasitic capacity C2 occurring between a lower magnetic layer and the second shield layer with the third insulating layer as a capacity layer. Preferably, a connection is made between the lower magnetic layer and the slider substrate by a resistance of preferably 100 (Ω) or lower. Thus, it is possible to provide a thin-film magnetic head that can hold back deterioration in a reproducing device and the occurrence of errors due to crosstalk between a recording device and the reproducing device and extraneous noises.
摘要翻译：在第一绝缘层作为电容层的滑块基板与第一屏蔽层之间产生的寄生电容C 4大体上等于具有第三绝缘层的下磁层与第二屏蔽层之间的寄生电容C 2 作为容量层。优选地，通过优选100（Ω）或更低的电阻在下磁性层和滑块基板之间形成连接。因此，可以提供能够抑制再现装置中的劣化的薄膜磁头和由于记录装置与再现装置之间的串扰而引起的错误的发生以及无关的噪声。

2. 发明申请

US20060176618A1 Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus 有权
标题翻译：复合薄膜磁头，磁头组件和磁盘驱动装置
公开(公告)号：US20060176618A1
公开(公告)日：2006-08-10
申请号：US11348487
申请日：2006-02-07
申请人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
发明人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B2005/3996
摘要： A composite thin-film magnetic head includes a substrate; a first insulation layer laminated on the substrate; an MR read head element formed on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a direction perpendicular to a surface of the MR layer through the upper shield layer and the lower shield layer; a second insulation layer laminated on the MR read head element; an inductive write head element formed on the second insulation layer and provided with a lower magnetic pole layer, a recording gap layer, an upper magnetic pole layer whose end portion is opposed to an end portion of the lower magnetic pole layer through the recording gap layer and a write coil; and a nonmagnetic conductive layer electrically conducted with the lower shield layer and opposed to the substrate in order to increase substantially countered area between the lower shield layer and the substrate.
摘要翻译：复合薄膜磁头包括基板; 层叠在所述基板上的第一绝缘层; 形成在第一绝缘层上并具有下屏蔽层，上屏蔽层和MR层的MR读头元件，其中感测电流通过上屏蔽层沿垂直于MR层的表面的方向流动，下屏蔽层; 层叠在MR读取头元件上的第二绝缘层; 形成在第二绝缘层上并具有下磁极层的感应写头元件，记录间隙层，其上端部通过记录间隙层与下磁极层的端部相对的上磁极层和一个写入线圈; 以及与下屏蔽层电连接并与基板相对的非磁性导电层，以便增加下屏蔽层和基板之间的基本上反向的面积。

3. 发明授权

US07672084B2 Composite thin-film magnetic head with non-magnetic conductive layer electrically connected with lower pole layer to increase counter electrode area 有权
标题翻译：具有与下极层电连接的非磁性导电层的复合薄膜磁头增加对电极面积
公开(公告)号：US07672084B2
公开(公告)日：2010-03-02
申请号：US12427314
申请日：2009-04-21
申请人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
发明人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
IPC分类号： G11B5/265 , G11B5/31 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B2005/3996
摘要： Composite thin-film magnetic head includes a substrate; a first insulation layer on the substrate; an MR read head element on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer with a sense current flowing perpendicular to a surface of the MR layer though the upper and lower shield layers; a second insulation layer on the MR read head element; an inductive write head element on the second insulation layer and provided with a lower magnetic pole layer, a recording gap layer, an upper magnetic pole layer with end portion opposed to an end portion of the lower magnetic pole layer through the recording gap layer and a write coil; and a nonmagnetic conductive layer electrically conducted with the lower shield layer and opposed to the substrate to increase the electrode area between the lower shield layer and the substrate.
摘要翻译：复合薄膜磁头包括基板; 衬底上的第一绝缘层; 在第一绝缘层上设置MR读头元件，并且具有下屏蔽层，上屏蔽层和MR层，感测电流通过上下屏蔽层垂直于MR层的表面流动; MR读取头元件上的第二绝缘层; 第二绝缘层上的感应式写入头元件，设置有下磁极层，记录间隙层，具有通过记录间隙层与下磁极层的端部相对的端部的上磁极层，以及写线圈以及与下屏蔽层电连接并与基板相对的非磁性导电层，以增加下屏蔽层和基板之间的电极面积。

4. 发明申请

US20060082929A1 Thin-film magnetic head, head gimbal assembly and hard disk system 有权
标题翻译：薄膜磁头，磁头万向架组件和硬盘系统
公开(公告)号：US20060082929A1
公开(公告)日：2006-04-20
申请号：US11205072
申请日：2005-08-17
申请人： Hiroshi Kiyono , Tetsuya Kuwashima , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Nozomu Hachisuka
发明人： Hiroshi Kiyono , Tetsuya Kuwashima , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Nozomu Hachisuka
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/31 , G11B5/3912 , G11B5/3967 , G11B5/4826 , G11B2005/3996
摘要： A parasitic capacity C4 generated between a slider substrate and the first shield layer with the first insulating layer as a capacity layer is made substantially equal to a parasitic capacity C2 occurring between a lower magnetic layer and the second shield layer with the third insulating layer as a capacity layer. Preferably, a connection is made between the lower magnetic layer and the slider substrate by a resistance of preferably 100 (Ω) or lower. Thus, it is possible to provide a thin-film magnetic head that can hold back deterioration in a reproducing device and the occurrence of errors due to crosstalk between a recording device and the reproducing device and extraneous noises.
摘要翻译：在第一绝缘层作为电容层的滑块基板与第一屏蔽层之间产生的寄生电容C 4大体上等于具有第三绝缘层的下磁层与第二屏蔽层之间的寄生电容C 2 作为容量层。优选地，通过优选100（Ω）或更低的电阻在下磁性层和滑块基板之间形成连接。因此，可以提供能够抑制再现装置中的劣化的薄膜磁头和由于记录装置与再现装置之间的串扰而引起的错误的发生以及无关的噪声。

5. 发明授权

US07542245B2 Composite thin-film magnetic head with non-magnetic conductive layer to balance parasitic capacitances 有权
标题翻译：具有非磁性导电层的复合薄膜磁头，以平衡寄生电容
公开(公告)号：US07542245B2
公开(公告)日：2009-06-02
申请号：US11348487
申请日：2006-02-07
申请人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
发明人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
IPC分类号： G11B5/265 , G11B5/31 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B2005/3996
摘要： Composite thin-film magnetic head includes a substrate; a first insulation layer on the substrate; an MR read head element on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer with a sense current flowing perpendicular to a surface of the MR layer though the upper and lower shield layers; a second insulation layer on the MR read head element; an inductive write head element on the second insulation layer and provided with a lower magnetic pole layer, a recording gap layer, an upper magnetic pole layer with end portion opposed to an end portion of the lower magnetic pole layer through the recording gap layer and a write coil; and a nonmagnetic conductive layer electrically conducted with the lower shield layer and opposed to the substrate to increase the electrode area between the lower shield layer and the substrate.
摘要翻译：复合薄膜磁头包括基板; 衬底上的第一绝缘层; 在第一绝缘层上设置MR读头元件，并且具有下屏蔽层，上屏蔽层和MR层，感测电流通过上下屏蔽层垂直于MR层的表面流动; MR读取头元件上的第二绝缘层; 第二绝缘层上的感应式写入头元件，设置有下磁极层，记录间隙层，具有通过记录间隙层与下磁极层的端部相对的端部的上磁极层，以及写线圈以及与下屏蔽层电连接并与基板相对的非磁性导电层，以增加下屏蔽层和基板之间的电极面积。

6. 发明授权

US07398591B2 Manufacturing method of a thin-film magnetic head 有权
标题翻译：薄膜磁头的制造方法
公开(公告)号：US07398591B2
公开(公告)日：2008-07-15
申请号：US10971113
申请日：2004-10-25
申请人： Takeo Kagami , Takayasu Kanaya , Noriaki Kasahara , Kazuki Sato
发明人： Takeo Kagami , Takayasu Kanaya , Noriaki Kasahara , Kazuki Sato
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/332 , Y10T29/49043 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： The present invention relates to a manufacturing method of a thin-film magnetic head whereby re-deposition and an overlapped part in a region of a magnetoresistive effect multi-layered structure opposite to an air bearing surface can be removed and also a width of a free layer can be narrowed.
摘要翻译：薄膜磁头的制造方法技术领域本发明涉及一种薄膜磁头的制造方法，其中可以除去与空气轴承表面相对的磁阻效应多层结构的区域中的再沉积和重叠部分，层可以变窄。

7. 发明授权

US07190559B2 Thin-film magnetic head having the length of the pinned and antiferromagnetic layers greater than the width dimension thereof and/or the length of the free layer 有权
标题翻译：具有大于其宽度尺寸和/或自由层的长度的钉扎和反铁磁性层的长度的薄膜磁头
公开(公告)号：US07190559B2
公开(公告)日：2007-03-13
申请号：US10652517
申请日：2003-09-02
申请人： Takeo Kagami , Noriaki Kasahara
发明人： Takeo Kagami , Noriaki Kasahara
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3116 , G11B5/3163 , G11B5/3903 , G11B5/3909 , G11B5/3932 , G11B5/4806 , G11B2005/0008 , G11B2005/0016 , G11B2005/3996
摘要： In the thin-film magnetic head of the present invention, the length of each of a pinned layer and an antiferromagnetic layer in their contact area in the depth direction from a surface facing a medium is longer than the length of a free layer in the same direction. When the length of the pinned layer in the depth direction is set longer as such, the direction of magnetization of the pinned layer can be restrained from being tilted by disturbances. Also, the pinned layer and the antiferromagnetic layer have the same length in their contact area in the MR height direction, so that the pinned layer is in contact with the antiferromagnetic layer throughout its length in the MR height direction, thus raising the exchange coupling force, whereby the inclination in the direction of magnetization can be suppressed more effectively.
摘要翻译：在本发明的薄膜磁头中，从面向介质的表面的深度方向的接触面积中的被钉扎层和反铁磁性层的长度比同一层的自由层的长度长方向。当钉扎层的深度方向的长度设定得更长时，可以抑制被钉扎层的磁化方向被扰动倾斜。此外，钉扎层和反铁磁层在其MR高度方向上的接触面积上具有相同的长度，使得钉扎层在MR高度方向上的整个长度上与反铁磁层接触，从而提高交换耦合力从而能够更有效地抑制磁化方向的倾斜。

8. 发明授权

US07573675B2 Thin film magnetic head 有权
标题翻译：薄膜磁头
公开(公告)号：US07573675B2
公开(公告)日：2009-08-11
申请号：US11374167
申请日：2006-03-14
申请人： Naoki Ohta , Kazuki Sato , Noriaki Kasahara , Takeo Kagami
发明人： Naoki Ohta , Kazuki Sato , Noriaki Kasahara , Takeo Kagami
IPC分类号： G11B5/31
CPC分类号： G11B5/3932 , G11B5/3967
摘要： A thin film magnetic head has an air bearing surface and comprises magnetic shield layers, an MR element, bias-applying layers, and a hard magnetic layer. Each of the magnetic shield layers has an end face forming the air bearing surface, and an end face located opposite to the end face. The MR element is located between the magnetic shield layers and on the end face side. The bias-applying layers are located between the magnetic shield layers and are arranged to apply a bias magnetic field to the MR element. The hard magnetic layer is located between the magnetic shield layers and on the end face side. A height of the hard magnetic layer is larger than ⅓ and smaller than ½ of a height of each magnetic shield layer.
摘要翻译：薄膜磁头具有空气轴承表面并且包括磁屏蔽层，MR元件，偏置施加层和硬磁性层。每个磁屏蔽层具有形成空气轴承表面的端面和与端面相对的端面。 MR元件位于磁屏蔽层之间和端面侧。偏置施加层位于磁屏蔽层之间并被布置成向MR元件施加偏置磁场。硬磁性层位于磁屏蔽层之间和端面侧。硬磁性层的高度大于1/3且小于每个磁屏蔽层的高度的1/2。

9. 发明授权

US07489481B2 CCP Head having leads of substantially the same size and shape and not intervening between a shield layer and a MR element 有权
标题翻译： CCP头部具有基本上相同尺寸和形状的引线，并且不插入屏蔽层和MR元件之间
公开(公告)号：US07489481B2
公开(公告)日：2009-02-10
申请号：US11067643
申请日：2005-02-28
申请人： Kentaro Nagai , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Satoshi Miura
发明人： Kentaro Nagai , Takeo Kagami , Noriaki Kasahara , Naoki Ohta , Satoshi Miura
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3912 , B82Y10/00 , B82Y25/00 , G11B5/3909 , G11B2005/3996
摘要： A magnetic head is provided for further improving a correlation between the dynamic characteristics and static characteristics. A lower magnetic shield layer, a magneto-resistive layer, and an upper magnetic shield layer are laminated on a base in this order. A lower lead layer and an upper lead layer apply a sense current to the magneto-resistive layer in a direction substantially perpendicular to the film plane thereof through the magnetic shield layers. The lower magnetic shield layer and upper magnetic shield layer have their shapes and sizes which substantially exactly overlap each other, when viewed in a laminating direction. The lower lead layer is electrically connected to the lower magnetic shield layer. At least a portion of the lower lead layer closer to the lower magnetic shield layer is made of a non-magnetic conductive material. The upper lead layer is electrically connected to the upper magnetic shield layer. At least a portion of the upper lead layer closer to the upper magnetic shield layer is made of a non-magnetic conductive material.
摘要翻译：提供磁头用于进一步改善动态特性和静态特性之间的相关性。下部磁屏蔽层，磁阻层和上部磁屏蔽层依次层压在基座上。下引线层和上引线层通过磁屏蔽层在大致垂直于其膜平面的方向上向磁阻层施加感测电流。当从层叠方向观察时，下磁屏蔽层和上磁屏蔽层具有基本精确地彼此重叠的形状和尺寸。下引线层电连接到下磁屏蔽层。下引线层的更靠近下磁屏蔽层的至少一部分由非磁性导电材料制成。上引线层电连接到上磁屏蔽层。上导电层的至少一部分靠近上磁屏蔽层由非磁性导电材料制成。

10. 发明申请

US20060209470A1 Thin film magnetic head 有权
公开(公告)号：US20060209470A1
公开(公告)日：2006-09-21
申请号：US11374167
申请日：2006-03-14
申请人： Naoki Ohta , Kazuki Sato , Noriaki Kasahara , Takeo Kagami
发明人： Naoki Ohta , Kazuki Sato , Noriaki Kasahara , Takeo Kagami
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3932 , G11B5/3967
摘要： A thin film magnetic head has an air bearing surface and comprises magnetic shield layers, an MR element, bias-applying layers, and a hard magnetic layer. Each of the magnetic shield layers has an end face forming the air bearing surface, and an end face located opposite to the end face. The MR element is located between the magnetic shield layers and on the end face side. The bias-applying layers are located between the magnetic shield layers and are arranged to apply a bias magnetic field to the MR element. The hard magnetic layer is located between the magnetic shield layers and on the end face side. A height of the hard magnetic layer is larger than ⅓ and smaller than ½ of a height of each magnetic shield layer.

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