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1. 发明授权

US5792546A Magneto-resistive head and method of producing the same 失效
标题翻译：磁阻头及其制造方法
公开(公告)号：US5792546A
公开(公告)日：1998-08-11
申请号：US289204
申请日：1994-08-12
申请人： Michiaki Kanamine , Hitoshi Kanai , Junichi Kane , Junzo Toda , Yuji Uehara
发明人： Michiaki Kanamine , Hitoshi Kanai , Junichi Kane , Junzo Toda , Yuji Uehara
IPC分类号： G11B5/31 , G11B5/39 , G11B5/66
CPC分类号： G11B5/3932 , G11B5/3903 , G11B5/3912 , G11B5/3967 , G11B5/3163 , Y10S428/90 , Y10T428/1171 , Y10T428/24942 , Y10T428/2495
摘要： A magneto-resistive head is provided with a substrate, a lower shield layer made of a Fe-system magnetic material and provided above the substrate, and a non-magnetic insulator layer provided above the lower shield layer. The non-magnetic insulator layer has a function of suppressing deterioration of surface roughness of the lower shield layer when subjected to an annealing process under a magnetic field in order to improve magnetic characteristics of the lower shield layer to desired magnetic characteristics.
摘要翻译：磁阻头设置有基板，由Fe系磁性材料制成并设置在基板上方的下屏蔽层，以及设置在下屏蔽层上方的非磁性绝缘体层。非磁性绝缘体层具有在磁场下进行退火处理时抑制下屏蔽层的表面粗糙度劣化的功能，以便将下屏蔽层的磁特性改善为期望的磁特性。

2. 发明授权

US06493197B2 Magneto-resistance effect type head and information reproducing apparatus 失效
标题翻译：垂直偏置底层和磁阻效应型头
公开(公告)号：US06493197B2
公开(公告)日：2002-12-10
申请号：US09955358
申请日：2001-09-18
申请人： Junichi Ito , Michiaki Kanamine , Hitoshi Kanai
发明人： Junichi Ito , Michiaki Kanamine , Hitoshi Kanai
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/3113 , G11B5/3903 , G11B5/3932 , G11B2005/3996
摘要： The present invention provides a magneto-resistance effect type head for reproducing, with a high sensitivity, information recorded at a high recording density on a recording medium while inhibiting occurrence of the Barkhausen noise, including a magneto-resistance effect element comprised of a multi-layer film containing a free magnetic layer having its magnetization direction changing in correspondence with an external magnetic field, an insulating film, a non-magnetic underlying layer formed on the insulating film, and one pair of magnetic domain-wall control layers formed on the underlying layer in its in-face direction with a predetermined spacing therebetween, for inhibiting movement of magnetic domain wall of the free magnetic layer, in such a configuration that the free magnetic layer has its both ends directly stacked on the pair of the magnetic domain-wall control layers and also has its middle part directly stacked on the underlying layer.
摘要翻译：本发明提供了一种用于以高灵敏度将以高记录密度记录在信息记录介质上的信息同时抑制巴克豪森噪声的发生的磁阻效应型磁头，包括由多声道组成的磁阻效应元件，其包含其磁化方向与外部磁场相对应地变化的自由磁性层，绝缘膜，形成在绝缘膜上的非磁性下层，以及形成在底层上的一对磁畴壁控制层层之间以预定的间隔在其面内方向上，用于抑制自由磁性层的磁畴壁的移动，使得自由磁性层的两端直接堆叠在一对磁畴壁上控制层并且其中间部分直接堆叠在下层上。

3. 发明授权

US5187628A Thin film magnetic head having magnetic anisotropy with in-plane and perpendicular components 失效
标题翻译：具有平面和平面构件的磁性异相薄膜薄膜磁头
公开(公告)号：US5187628A
公开(公告)日：1993-02-16
申请号：US765742
申请日：1991-09-26
申请人： Hitoshi Kanai , Michiaki Kanamine , Kazuo Kobayashi
发明人： Hitoshi Kanai , Michiaki Kanamine , Kazuo Kobayashi
IPC分类号： G11B5/31
CPC分类号： G11B5/3113
摘要： A magnetic head of the invention comprises a substrate, upper and lower magnetic films forming a magnetic circuit on the substrate, the magnetic circuit having a narrow portion in width and forming a gap at the end of the magnetic circuit for interacting with a recording medium, and a coil surrounding the magnetic circuit and buried in an insulation layer between the upper and lower magnetic films. The magnetic head of the invention is characterized in that the magnetic films further comprise a magnetic anisotropy having components of an in-plane (parallel to the magnetic film surface) magnetic anisotropy Hp and a perpendicular (vertical to the magnetic film surface) magnetic anisotropy Hv, and the perpendicular magnetic anisotropy Hv is given to the magnetic film by anyone among utilization of an inverse magnetostriction effect, an induced magnetic anisotropy and a crystalline magnetic anisotropy.

4. 发明授权

US06605414B2 Method for manufacturing magnetoresistance head 失效
标题翻译：磁阻头制造方法
公开(公告)号：US06605414B2
公开(公告)日：2003-08-12
申请号：US09439724
申请日：1999-11-12
申请人： Keiji Watanabe , Koji Nozaki , Miwa Igarashi , Yoko Kuramitsu , Ei Yano , Takahisa Namiki , Hiroshi Shirataki , Keita Ohtsuka , Michiaki Kanamine , Yuji Uehara
发明人： Keiji Watanabe , Koji Nozaki , Miwa Igarashi , Yoko Kuramitsu , Ei Yano , Takahisa Namiki , Hiroshi Shirataki , Keita Ohtsuka , Michiaki Kanamine , Yuji Uehara
IPC分类号： G03F730
CPC分类号： G11B5/3903 , G11B5/3116 , G11B5/3163 , G11B5/3906 , G11B5/398 , Y10S438/911
摘要： A method for manufacturing a magnetoresistance head of the present invention comprises the steps of forming an organic film on a multilayered film constituting a magnetoresistance device, forming an upper film formed of resist or inorganic film on the organic film, patterning the organic film and the upper film, cutting into edges of the organic film patterns from edges of the upper film patterns inwardly to such an extent that particles of the thin film being formed on the upper film and the multilayered film do not contact to side portions of the organic film patterns.
摘要翻译：本发明的磁电阻头的制造方法包括以下步骤：在构成磁阻器件的多层膜上形成有机膜，在有机膜上形成由抗蚀剂或无机膜形成的上层膜，使有机膜和上层薄膜，从上部膜图案的边缘向内切割成有机膜图案的边缘，使得形成在上部膜和多层膜上的薄膜的颗粒不与有机膜图案的侧部接触。

5. 发明授权

US6052261A Method for manufacturing magnetoresistance head 失效
公开(公告)号：US6052261A
公开(公告)日：2000-04-18
申请号：US669610
申请日：1996-06-24
申请人： Keiji Watanabe , Koji Nozaki , Miwa Igarashi , Yoko Kuramitsu , Ei Yano , Takahisa Namiki , Hiroshi Shirataki , Keita Ohtsuka , Michiaki Kanamine , Yuji Uehara
发明人： Keiji Watanabe , Koji Nozaki , Miwa Igarashi , Yoko Kuramitsu , Ei Yano , Takahisa Namiki , Hiroshi Shirataki , Keita Ohtsuka , Michiaki Kanamine , Yuji Uehara
IPC分类号： G11B5/31 , G11B5/39 , G11B5/127
CPC分类号： G11B5/3903 , G11B5/3906 , G11B5/3116 , G11B5/3163 , G11B5/398 , Y10S438/911
摘要： A method for manufacturing a magnetoresistance head of the present invention comprises the steps of forming an organic film on a multilayered film constituting a magnetoresistance device, forming an upper film formed of resist or inorganic film on the organic film, patterning the organic film and the upper film, cutting into edges of the organic film patterns from edges of the upper film patterns inwardly to such an extent that particles of the thin film being formed on the upper film and the multilayered film do not contact to side portions of the organic film patterns.

6. 发明授权

US6104575A Planar thin-film magnetic head and manufacturing method therefor 失效
标题翻译：平面薄膜磁头及其制造方法
公开(公告)号：US6104575A
公开(公告)日：2000-08-15
申请号：US17432
申请日：1998-02-02
申请人： Yukinori Ikegawa , Michiaki Kanamine
发明人： Yukinori Ikegawa , Michiaki Kanamine
IPC分类号： G11B5/31 , G11B5/60 , G11B5/147
CPC分类号： G11B5/3183 , G11B5/3106 , G11B5/6005
摘要： A planar thin-film magnetic head including a lower magnetic pole having a first end portion and a second end portion, and an upper magnetic pole having a first end portion magnetically joined to the first end portion of the lower magnetic pole and a second end portion. A gap is defined between the second end portion of the lower magnetic pole and the second end portion of the upper magnetic pole. The thin-film magnetic head further includes a coil having a center positioned in the vicinity of the gap and spirally formed so as to pass between the upper magnetic pole and the lower magnetic pole. The coil is embedded in an insulating layer.
摘要翻译：一种平面薄膜磁头，包括具有第一端部和第二端部的下磁极，以及具有磁性地接合到下磁极的第一端部的第一端部的上磁极和第二端部。在下磁极的第二端部和上磁极的第二端部之间限定间隙。薄膜磁头还包括具有位于间隙附近的中心并螺旋地形成以便在上磁极和下磁极之间通过的线圈。线圈嵌入绝缘层。

7. 发明授权

US06700758B2 Magnetoresistive effect type of head, manufacturing method of magnetoresistive effect type of head, and information reproducing system 失效
标题翻译：磁阻效应类型的头，磁阻效应类型的头的制造方法和信息再现系统
公开(公告)号：US06700758B2
公开(公告)日：2004-03-02
申请号：US10007888
申请日：2001-11-13
申请人： Junichi Hashimoto , Michiaki Kanamine , Takahiro Imamura , Kenichi Aoshima
发明人： Junichi Hashimoto , Michiaki Kanamine , Takahiro Imamura , Kenichi Aoshima
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3113 , G11B5/3903 , G11B2005/3996
摘要： A magnetoresistive head reproduces information recorded on a recording medium with high recording density, suppressing generation of Barkhausen noise. A magnetoresistive effect element in the head is a flat multi-layer film in which a free magnetic layer is set to a lowest layer. The head also includes a non-magnetic substrate, an insulating layer contacting a center portion of a lower surface of a substrate side of the free magnetic layer, and a pair of electrode layers. The electrode layers are formed with the insulating layer in between, contacting both edge portions of the free magnetic layer. The electrodes are formed with the same surface height as the surface height of the insulating layer. A pair of magnetic wall control layers suppress movement of a magnetic wall of the free magnetic layer.
摘要翻译：磁阻头再现记录在具有高记录密度的记录介质上的信息，抑制了巴克豪森噪声的产生。头部中的磁阻效应元件是其中将自由磁性层设置为最低层的平坦多层膜。头部还包括非磁性基板，与自由磁性层的基板侧的下表面的中心部分接触的绝缘层和一对电极层。电极层之间形成有绝缘层，接触自由磁性层的两个边缘部分。电极形成与绝缘层的表面高度相同的表面高度。一对磁性壁控制层抑制自由磁性层的磁性壁的运动。

8. 发明授权

US4974110A Thin film magnetic head for perpendicular recording and reproducing 失效
标题翻译：用于垂直记录和再现的薄膜磁头
公开(公告)号：US4974110A
公开(公告)日：1990-11-27
申请号：US361181
申请日：1989-06-05
申请人： Michiaki Kanamine , Takao Koshikawa
发明人： Michiaki Kanamine , Takao Koshikawa
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/1278
摘要： A thin film magnetic head for perpendicularly recording and reproducing is disclosed. The magnetic head comprises a main magnetic pole of a thin film, a spiral coil of an electrically conductive film disposed on one side of the main magnetic pole, a first auxiliary magnetic pole of a thin film covering the coil, and a second auxiliary magnetic pole disposed on the other side of the main magnetic pole, forming a substrate or being formed on a non-magnetic substrate. The distributed magnetic leakage path between the main magnetic pole and the second auxiliary magnetic pole plays an important role in the present invention. When the second auxiliary magnetic pole is properly arranged, the magnetic flux flowing through two magnetic paths and interlinking the coil, are cancelled by each other and edge noise due to magnetic flux generated at the second auxiliarly magnetic pole by a magnetic transition of the recording medium is minimized. The low edge noise characteristic enhances the recording and reproducing efficiency of the thin film magnetic head.
摘要翻译：公开了用于垂直记录和再现的薄膜磁头。磁头包括薄膜的主磁极，设置在主磁极一侧的导电膜的螺旋线圈，覆盖线圈的薄膜的第一辅助磁极和第二辅助磁极设置在主磁极的另一侧，形成基板或形成在非磁性基板上。主磁极和第二辅助磁极之间的分布式磁泄漏路径在本发明中起重要作用。当适当地布置第二辅助磁极时，流过两个磁路并使线圈互相连接的磁通被彼此抵消，并且由于记录介质的磁转变而在第二辅助磁极产生的磁通产生的边缘噪声被最小化。低边缘噪声特性增强了薄膜磁头的记录和再现效率。

9. 发明授权

US5894389A Thin-film Magnetic head having a narrow core width and process for its production 失效
标题翻译：薄磁芯磁芯具有窄的磁芯宽度及其制造工艺
公开(公告)号：US5894389A
公开(公告)日：1999-04-13
申请号：US957092
申请日：1997-10-24
申请人： Michiaki Kanamine
发明人： Michiaki Kanamine
IPC分类号： G11B5/31 , G11B5/187
CPC分类号： G11B5/3116 , G11B5/313 , G11B5/3163 , Y10T29/49048
摘要： A recess with a slanted wall is provided on a substrate, a magnetic yoke layer is formed so that the end of the magnetic yoke layer covers the slanted wall, and the recess is filled with a filling layer. Flat working is performed until a portion of the substrate is removed so that the magnetic yoke layer appears on the flat worked surface of the substrate, and the width of the magnetic yoke layer appearing on the top flat surface is almost determined by the thickness of the magnetic yoke layer, which defines the width of a core of a magnetic head. Thus, a narrow core width of a magnetic head is provided.
摘要翻译：具有倾斜壁的凹部设置在基板上，形成磁轭层，使得磁轭层的端部覆盖倾斜壁，并且凹部填充有填充层。进行平面加工直到基板的一部分被去除，使得磁轭层出现在基板的平坦加工表面上，并且出现在顶部平坦表面上的磁轭层的宽度几乎取决于磁轭层，其限定磁头的磁芯的宽度。因此，提供磁头的窄的磁心宽度。

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