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1. 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。

2. 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.

3. 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。

4. 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。

5. 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。

6. 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。

7. 发明申请

US20050201018A1 Magnetic head, head suspension assembly and magnetic disk apparatus 有权
标题翻译：磁头，头悬挂组件和磁盘设备
公开(公告)号：US20050201018A1
公开(公告)日：2005-09-15
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： G11B5/39 , G11B5/127 , G11B5/33
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。

8. 发明授权

US07548400B2 Thin-film magnetic head comprising bias layers having a large length in track width direction 失效
标题翻译：薄膜磁头包括在磁道宽度方向上具有大长度的偏置层
公开(公告)号：US07548400B2
公开(公告)日：2009-06-16
申请号：US11066763
申请日：2005-02-28
申请人： Takeo Kagami , Noriaki Kasahara , Kazuki Sato , Takayasu Kanaya
发明人： Takeo Kagami , Noriaki Kasahara , Kazuki Sato , Takayasu Kanaya
IPC分类号： G11B5/33
CPC分类号： G11B5/398 , B82Y25/00 , G01R33/093 , G01R33/098 , G11B5/3932 , G11B2005/0008
摘要： The thin-film magnetic head of the present invention comprises an MR sensor wherein a first ferromagnetic layer in which a magnetization direction is fixed with respect to external magnetic fields, a non-magnetic intermediate layer, and a second ferromagnetic layer in which a magnetization direction changes with respect to the external magnetic fields are stacked, and wherein a sense current flows substantially parallel to the stacked layer surface. The thin-film magnetic head comprises a pair of bias layers for exerting a bias magnetic field upon the MR sensor; the bias layers extending substantially symmetrically from two sides of the MR sensor in a direction of track width of a recording medium, each bias layer being connected with the MR sensor over a length which is substantially the same as the MR sensor in a direction perpendicular to the air bearing surface; and each bias layer having a shape which is contained within an imaginary rectangle which has its long sides along the air bearing surface in the direction of the track width of the recording medium and its short sides in the direction perpendicular to the air bearing surface and which contacts the short side of the imaginary rectangle which is opposite the short side which contacts the MR sensor. The thin-film magnetic head further comprises a pair of lead layers for supplying the sense current to the MR sensor each extending from the air bearing surface to cover at least a portion of each of the bias layers.
摘要翻译：本发明的薄膜磁头包括MR传感器，其中磁化方向相对于外部磁场固定的第一铁磁层，非磁性中间层和第二铁磁层，其中磁化方向相对于外部磁场的变化被堆叠，并且其中感测电流基本上平行于堆叠的层表面流动。薄膜磁头包括用于在MR传感器上施加偏置磁场的一对偏置层; 偏置层在MR传感器的两侧沿着记录介质的磁道宽度的方向基本上对称地延伸，每个偏置层在与MR传感器垂直的方向上与MR传感器基本相同的长度上与MR传感器连接空气轴承表面; 并且每个偏置层具有包含在假想矩形内的形状，该假想矩形具有沿着记录介质的轨道宽度的空气轴承表面的长边，并且在垂直于空气轴承表面的方向上具有短边，接触与MR传感器接触的短边相反的假想矩形的短边。薄膜磁头还包括一对引导层，用于向MR传感器提供感测电流，每个引导层从空气支承表面延伸以覆盖每个偏置层的至少一部分。

9. 发明申请

US20080291582A1 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US20080291582A1
公开(公告)日：2008-11-27
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/10
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

10. 发明授权

US07843667B2 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US07843667B2
公开(公告)日：2010-11-30
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

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