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1. 发明授权

US5875078A Magnetoresistance thin film magnetic head having reduced terminal count; and bias characteristics measuring method 失效
标题翻译：具有减少端子数的磁阻薄膜磁头; 和偏置特性测量方法
公开(公告)号：US5875078A
公开(公告)日：1999-02-23
申请号：US694182
申请日：1996-08-08
申请人： Hideo Suyama , Takuji Shibata , Norio Saito , Mamoru Sasaki , Akio Takada , Jin Sato , Shuichi Haga
发明人： Hideo Suyama , Takuji Shibata , Norio Saito , Mamoru Sasaki , Akio Takada , Jin Sato , Shuichi Haga
IPC分类号： G11B5/31 , G11B5/39 , G11B5/455
CPC分类号： G11B5/3903 , G11B5/3906 , G11B5/455 , G11B5/3945
摘要： In a magnetoresistance thin film magnetic head, a bias conductor and a magnetoresistive magnetic sensing section are electrically connected to each other in series. Further, the bias conductor (7) is formed in such a pattern as to have a width and distance from a magnetic recording medium facing surface which become larger as it is away from a portion transversing the magnetoresistive magnetic sensing section.
摘要翻译：在磁阻薄膜磁头中，偏置导体和磁阻磁感应部分串联电连接。此外，偏置导体（7）形成为具有与磁记录介质相对表面的宽度和距离的图案，该距离随着远离磁阻感测部分的部分而变大。

2. 发明授权

US5867350A Magneto-resistance effect head with insulated bias conductor embedded in shield groove 失效
标题翻译：具有绝缘偏置导体的磁阻效应头嵌入屏蔽槽
公开(公告)号：US5867350A
公开(公告)日：1999-02-02
申请号：US819322
申请日：1997-03-18
申请人： Shuichi Haga , Mamoru Sasaki , Hideo Suyama , Nobuhiro Sugawara , Akio Takada , Mikiya Kurosu , Chizuru Ohshima
发明人： Shuichi Haga , Mamoru Sasaki , Hideo Suyama , Nobuhiro Sugawara , Akio Takada , Mikiya Kurosu , Chizuru Ohshima
IPC分类号： G11B5/31 , G11B5/39 , G11B5/40 , G11B5/11
CPC分类号： G11B5/3903 , G11B5/313 , G11B5/40
摘要： A magneto-resistance effect magnetic head having a uniform bias distribution and adapted for avoiding shorting between a magneto-resistance device and a bias conductor wherein a magneto-resistance device 5 and a bias conductor 6 for applying a bias magnetic field to the magneto-resistance device 5 are interposed between a lower shielding magnetic member 1 and an upper shielding magnetic member 2. The bias conductor is embedded in a groove formed in the shielding magnetic member provided on the opposite side of forward and rear electrodes with respect to the magneto-resistance effect device.
摘要翻译：一种磁阻效应磁头，具有均匀的偏置分布并且适于避免在磁阻元件和偏置导体之间的短路，其中磁阻元件5和用于向磁阻施加偏置磁场的偏置导体6 装置5插入在下屏蔽磁性构件1和上屏蔽磁性构件2之间。偏置导体嵌入形成在屏蔽磁性构件中的槽中，该屏蔽磁性构件设置在前后电极的相对于磁阻的相反侧效果器。

3. 发明授权

US5272582A Magneto-resistance effect magnetic head with static electricity protection 失效
标题翻译：磁阻效应磁头具有静电保护功能
公开(公告)号：US5272582A
公开(公告)日：1993-12-21
申请号：US766503
申请日：1991-09-27
申请人： Takuji Shibata , Kenichiro Tsunewaki , Mamoru Sasaki , Hideo Suyama , Norio Saito
发明人： Takuji Shibata , Kenichiro Tsunewaki , Mamoru Sasaki , Hideo Suyama , Norio Saito
IPC分类号： G11B5/39 , G11B5/40
CPC分类号： G11B5/3903 , G11B5/40
摘要： A magneto-resistance effect type magnetic head incorporates a grounded conductive layer, a second thin film magnetic core and an MR sensing part, the conductive layer being located near the thin film magnetic core, the layer and the core being electrically connected. The conductive layer is further connected electrically to an electrode of the MR sensing part, the electrode facing an air bearing surface. This setup protects the MR sensing part from static electricity destruction, thus providing a magneto-resistance effect type magnetic head of high reliability.

4. 发明授权

US5270893A Specific core structure in a magneto-resistance head 失效
标题翻译：磁阻头中的具体核心结构
公开(公告)号：US5270893A
公开(公告)日：1993-12-14
申请号：US783166
申请日：1991-10-28
申请人： Mamoru Sasaki , Hideo Suyama , Takuji Shibata , Kenichiro Tsunewaki
发明人： Mamoru Sasaki , Hideo Suyama , Takuji Shibata , Kenichiro Tsunewaki
IPC分类号： G11B5/39 , C11B5/39 , C11B5/147
CPC分类号： G11B5/3903 , G11B5/3967
摘要： A magneto-resistance effect type thin film magnetic head which does not produce significant Barkhausen noises and has stabilized characteristics even where the track width is smaller than, for example, 10 .mu.m. The magnetic head comprises a base member, a lower layer thin film magnetic core and an upper layer thin film magnetic core layered on the base member in such a manner that a magnetic gap is formed between front ends thereof, the gap being open to an opposing face of the magnetic head which is in contact with or opposed to a magnetic record medium, and a magneto-resistance effect magnetic sensing section disposed in the magnetic gap between the lower and upper layer thin film magnetic cores. The front end of the lower layer thin film magnetic core which defines the magnetic gap has a width selected to be smaller than the width of the front end of the upper layer thin film magnetic core which defines the magnetic gap so as to define a track width of the magnetic gap.
摘要翻译：磁阻效应型薄膜磁头不产生明显的巴克豪森噪声，并且即使在轨道宽度小于例如10μm的情况下也具有稳定的特性。磁头包括基底部件，下层薄膜磁芯和层叠在基底部件上的上层薄膜磁芯，使得在其前端之间形成磁隙，间隙开放到相对的位置与磁记录介质接触或相对的磁头的表面，以及设置在下层和上层薄膜磁芯之间的磁隙中的磁阻效应磁感应部分。限定磁隙的下层薄膜磁芯的前端的宽度被选择为小于限定磁隙的上层薄膜磁芯的前端的宽度，以便限定磁道宽度的磁隙。

5. 发明授权

US5424890A Magnetoresistance effect type thin film head 失效
标题翻译：磁阻效应型薄膜头
公开(公告)号：US5424890A
公开(公告)日：1995-06-13
申请号：US295229
申请日：1994-08-24
申请人： Hideo Suyama , Tetsuo Sekiya , Munekatsu Fukuyama , Norio Saito , Takuji Shibata
发明人： Hideo Suyama , Tetsuo Sekiya , Munekatsu Fukuyama , Norio Saito , Takuji Shibata
IPC分类号： G11B5/39 , G11B5/40
CPC分类号： G11B5/39 , G11B5/40
摘要： A magnetoresistance effect type thin film head (A) constructed in a manner that a magnetoresistance effect element, that is, an MR element (1) is disposed perpendicularly to a head surface a, and among two electrodes (2a) and (2b) led out from both ends of the MR element (1), the one electrode (2a) is exposed to the head surface a but the other electrode (2b) is not exposed to the head surface a, wherein the one electrode (2a) exposed to the head surface a is connected to a ground voltage Vss, thereby decreasing the change in voltage difference between the electrode (2a) of the MR element (1) and a disc surface b to prevent the electrical breakdown of the thin film head (A).
摘要翻译：以磁致电阻效应元件即MR元件（1）垂直于磁头表面a设置的磁阻效应型薄膜磁头（A），以及在两个电极（2a）和（2b）之间引导的磁阻效应型薄膜磁头从MR元件（1）的两端出来，一个电极（2a）暴露于头表面a，而另一个电极（2b）不暴露于磁头表面a，其中一个电极（2a）暴露于头表面a连接到接地电压Vss，从而减小MR元件（1）的电极（2a）与盘表面b之间的电压差的变化，以防止薄膜头（A）的电击穿，。

6. 发明授权

US5247413A Magnetoresistance effect type thin film magnetic head with noise reducing electrode 失效
标题翻译：具有降噪电极的磁阻效应型薄膜磁头
公开(公告)号：US5247413A
公开(公告)日：1993-09-21
申请号：US11124
申请日：1993-01-29
申请人： Takuji Shibata , Hideo Suyama
发明人： Takuji Shibata , Hideo Suyama
IPC分类号： G11B5/11 , G11B5/39
CPC分类号： G11B5/3903 , G11B5/11
摘要： A magnetoresistance effect type thin film magnetic head comprising an MR element with electrodes provided at a fore end and a rear end thereof in the direction to confront a magnetic recording medium, wherein the electrode at the fore end of such MR element is electrically connected to a shielding magnetic layer to thereby eliminate any electrical instability at the fore end of the MR element, hence averting the characteristic instability in a playback mode while minimizing the unsteady generation of noise. The thin film magnetic head further comprises a first conductor having a great capacity and disposed in the proximity of the MR element, and a second conductor having a capacity smaller than that of the first conductor and connected to the fore-end electrode of the MR element. Such first and second conductors are connected to respective ground potentials independently of each other, thereby averting breakdown of the magnetic head that may otherwise be caused by the static charge generated due to the rotation of the magnetic recording medium during the operation.
摘要翻译：一种磁电阻效应型薄膜磁头，包括具有设置在其前端和后端的电极的MR元件，以面对磁记录介质的方向，其中该MR元件前端的电极电连接到屏蔽磁性层，从而消除MR元件前端的任何电不稳定性，从而避免重放模式中的特性不稳定性，同时最小化噪声的不稳定产生。薄膜磁头还包括具有大容量并且设置在MR元件附近的第一导体和具有小于第一导体的容量的第二导体，并且连接到MR元件的前端电极。这样的第一和第二导体彼此独立地连接到相应的接地电位，从而避免磁头的击穿，否则可能由于在操作期间磁记录介质的旋转而产生的静电产生。

7. 发明授权

US5671105A Magneto-resistive effect thin-film magnetic head 失效
标题翻译：磁阻效应薄膜磁头
公开(公告)号：US5671105A
公开(公告)日：1997-09-23
申请号：US563450
申请日：1995-11-28
申请人： Nobuhiro Sugawara , Hideo Suyama , Akio Takada
发明人： Nobuhiro Sugawara , Hideo Suyama , Akio Takada
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3922 , G11B2005/3996
摘要： A magneto-resistive effect thin-film magnetic head including a magnetic layer exhibiting a magneto-resistive effect, the magnetic layer having a longitudinal axis and two ends positioned at opposite ends of the longitudinal axis, and a flux guide layer of a high magnetic permeability soft magnetic material formed at an overlapping one end of the magnetic layer, the flux guide layer having two opposite ends longitudinally aligned with the longitudinal axis of the magnetic layer. On overlapping both ends of the flux guide layer, there are formed separate hard fills operating as permanent magnets.
摘要翻译：一种磁阻效应薄膜磁头，包括具有磁阻效应的磁性层，该磁性层具有纵向轴线和两端位于纵向轴线的相对端;以及磁导率层，其磁导率高形成在磁性层重叠的一端的软磁性材料，该磁通引导层具有与磁性层纵向对准的两个相对端。在磁通引导层的两端重叠时，形成作为永磁体工作的分开的硬填充物。

8. 发明授权

US4896235A Magnetic transducer head utilizing magnetoresistance effect 失效
标题翻译：磁传感器头采用磁阻效应
公开(公告)号：US4896235A
公开(公告)日：1990-01-23
申请号：US298299
申请日：1989-01-17
申请人： Hiroshi Takino , Shigeyoshi Imakoshi, deceased , Nobuhiro Terada , Norio Saito , Hideo Suyama , Kenichiro Tsunewaki
发明人： Hiroshi Takino , Shigeyoshi Imakoshi, deceased , Nobuhiro Terada , Norio Saito , Hideo Suyama , Kenichiro Tsunewaki
IPC分类号： G11B5/31 , G11B5/39
CPC分类号： G11B5/3925 , G11B5/3903 , G11B5/3941 , G11B5/3954 , G11B5/3961 , G11B5/3964 , G11B5/398 , G11B5/399 , G11B5/3156
摘要： A MR magnetic head with a sensing element which comprises a plurality of superposed magnetic layers which have a magnetoresistance effect in at least one and a nonmagnetic intermediate layer sandwiched between the magnetic layers, and a sensing current is fed so as to flow in the sensing element in the same direction as a signal magnetic field which is applied to the element. Each of the magnetic layers is formed so as to have an easy axis of magnetization which is substantially perpendicular to the signal magnetic field or to have an isotropic magnetic characteristic in the magnetic film plane, which eliminates Barkhausen noise.
摘要翻译：一种具有感测元件的MR磁头，其包括在夹在所述磁性层之间的至少一个磁阻效应和非磁性中间层中的多个重叠磁性层，并且馈送感测电流以在所述感测元件在与施加到元件的信号磁场相同的方向上。每个磁性层形成为具有基本上垂直于信号磁场的易磁化轴或者在磁性膜平面中具有各向同性磁特性，这消除了巴克豪森噪声。

9. 发明授权

US5982176A Geomagnetic direction sensor 失效
标题翻译：地磁方向传感器
公开(公告)号：US5982176A
公开(公告)日：1999-11-09
申请号：US411939
申请日：1995-03-28
申请人： Yoshihisa Kawamura , Kazuo Kurihara , Zenkichi Nakamura , Kietsu Iwabuchi , Toshio Aizawa , Hideo Suyama
发明人： Yoshihisa Kawamura , Kazuo Kurihara , Zenkichi Nakamura , Kietsu Iwabuchi , Toshio Aizawa , Hideo Suyama
IPC分类号： G01C17/30 , G01R33/02 , G01R33/09 , G01R33/06 , G01C17/28 , G01C17/32
CPC分类号： G01R33/09 , G01C17/30 , H01J2229/0038
摘要： A geomagnetic direction sensor has a plurality of magnetic cores for converging terrestrial magnetism arranged circumferentially with pre-set gaps, and magneto-resistive effect devices in the gaps so as to lie substantially at right angles to the direction of the magnetic field in the gaps. The geomagnetic direction sensor has at least a pair of magneto-resistive effect devices lying substantially at right angles to each other. The magnetic core is formed of a magnetic material having soft magnetic properties. The current is supplied to the excitation coils placed around the magnetic core for applying a bias magnetic field to the magneto-resistive effect devices. Another set of magneto-resistive effect devices are connected in series with the magneto-resistive effect devices arranged within the gap so as to be substantially parallel to the direction of the magnetic field.
摘要翻译：地磁方向传感器具有多个磁芯，用于会聚具有预先设定的间隙的周向布置的地磁，以及间隙中的磁阻效应器件，其基本上与间隙中的磁场方向成直角。地磁方向传感器具有至少一对基本上彼此成直角的磁阻效应装置。磁芯由具有软磁特性的磁性材料形成。电流被提供给放置在磁芯周围的激励线圈，用于向磁阻效应器件施加偏置磁场。另一组磁阻效应器件与布置在间隙内的磁阻效应器件串联连接，以便基本上平行于磁场的方向。

10. 发明授权

US4729048A Magnetic transducer combination with formatting, data, and servo heads 失效
标题翻译：磁性传感器与格式化，数据和伺服头组合
公开(公告)号：US4729048A
公开(公告)日：1988-03-01
申请号：US837810
申请日：1986-03-10
申请人： Shigeyoshi Imakoshi , Hideo Suyama , Hiroaki Yada , Toru Katakura , Tetsuo Sekiya , Masayuki Nakayama
发明人： Shigeyoshi Imakoshi , Hideo Suyama , Hiroaki Yada , Toru Katakura , Tetsuo Sekiya , Masayuki Nakayama
IPC分类号： G11B5/012 , G11B5/48 , G11B5/55 , G11B5/596
CPC分类号： G11B5/012 , G11B5/4886 , G11B5/5534 , G11B5/59633
摘要： A combination magnetic transducer head apparatus which can easily achieve initial formatting of data tracks of a rotating magnetic recording medium such as a hard disk without using a specific separate initial formatting system. The apparatus comprises a magnetic head for initial formatting, another magnetic head for servo control and a magnetic recording and playback head all mounted on a head slider. In the apparatus, at least one track is first recorded on a magnetic disk by the magnetic head for initial formatting and then another track is recorded by the magnetic recording and playback head while the first track is scanned by the magnetic head for servo control whereafter such a series of operations are repeated until completion of recording of all tracks required.
摘要翻译：一种组合磁换能器头装置，其可以容易地实现诸如硬盘的旋转磁记录介质的数据轨迹的初始格式化，而不使用特定的单独的初始格式化系统。该装置包括用于初始格式化的磁头，用于伺服控制的另一个磁头和全部安装在磁头滑块上的磁记录和重放头。在该设备中，首先通过磁头将至少一个磁道记录在磁盘上用于初始格式化，然后由磁记录和重放磁头记录另一个磁道，同时第一磁道由用于伺服控制的磁头扫描，重复一系列操作，直到完成所需的所有轨迹的记录。

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