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1. 发明公开

EP0457278A2 Magnetoresistance effect type thin film magnetic head 失效
标题翻译： Magnetowiderstandseffekt-Dünnfilmmagnetkopf。
公开(公告)号：EP0457278A2
公开(公告)日：1991-11-21
申请号：EP91107797.2
申请日：1991-05-14
申请人： SONY CORPORATION
发明人： Shibata, Takuji, c/o Sony Magnetic Products, Inc. , Suyama, Hideo, c/o Sony Magnetic Products, Inc.
IPC分类号： G11B5/39 , G11B5/11
CPC分类号： G11B5/3903 , G11B5/11
摘要： Head (21) comprising an MR element (25) with electrodes (27A,27B) provided at a fore end and a rear end thereof in the direction to confront a magnetic recording medium (14), wherein the electrode (27A) at the fore end of such MR element is electrically connected to a shielding magnetic layer (29) to thereby eliminate any electrical instability at the fore end of the MR element (25), 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 (28) having a great capacity and disposed in the proximity of the MR element (25), and a second conductor (33) 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 (V SS1 ,V SS2 ) 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（21），其包括具有电极（27A，27B）的MR元件（25），该电极设置在面对磁记录介质（14）的方向上的前端和后端，其中，这种MR元件前端的电极（27A）电连接到屏蔽磁性层（29），从而消除MR元件（25）前端的任何电不稳定性，从而避免了重放模式下的特性不稳定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的第一导体（28）并设置在MR元件（25）附近，以及具有小于第一导体的容量的第二导体（33），并连接到 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。

2. 发明授权

EP0457278B1 Magnetoresistance effect type thin film magnetic head 失效
标题翻译：磁阻效应薄膜磁头
公开(公告)号：EP0457278B1
公开(公告)日：1996-07-17
申请号：EP91107797.2
申请日：1991-05-14
申请人： SONY CORPORATION
发明人： Shibata, Takuji, c/o Sony Magnetic Products, Inc. , Suyama, Hideo, c/o Sony Magnetic Products, Inc.
IPC分类号： G11B5/39 , G11B5/11
CPC分类号： G11B5/3903 , G11B5/11

3. 发明公开

EP0457278A3 Magnetoresistance effect type thin film magnetic head 失效
标题翻译：磁阻效应型薄膜磁头
公开(公告)号：EP0457278A3
公开(公告)日：1992-08-05
申请号：EP91107797.2
申请日：1991-05-14
申请人： SONY CORPORATION
发明人： Shibata, Takuji, c/o Sony Magnetic Products, Inc. , Suyama, Hideo, c/o Sony Magnetic Products, Inc.
IPC分类号： G11B5/39 , G11B5/11
CPC分类号： G11B5/3903 , G11B5/11
摘要： Head (21) comprising an MR element (25) with electrodes (27A,27B) provided at a fore end and a rear end thereof in the direction to confront a magnetic recording medium (14), wherein the electrode (27A) at the fore end of such MR element is electrically connected to a shielding magnetic layer (29) to thereby eliminate any electrical instability at the fore end of the MR element (25), 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 (28) having a great capacity and disposed in the proximity of the MR element (25), and a second conductor (33) 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 (V SS1 ,V SS2 ) 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.

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