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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
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。
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2.发明授权
公开(公告)号：US5995339A
公开(公告)日：1999-11-30
申请号：US791015
申请日：1997-01-27
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G11B5/3903 , G11B5/3919 , G11B5/3925 , G11B5/3967
摘要： A magnetoresistive head includes a magnetoresistive element set back from the front end face of the head confronting a record medium for converting changes in a signal magnetic field leaking out from the record track of the record medium into changes in resistance. The magnetoresistive element is connected to a pair of terminals and a sense region is defined between both the terminals. The magnetoresistive element is magnetically coupled to a front flux guide, one end of which is exposed in the front end face of the head, at the other end of the same. The front flux guide is virtually in the form of a rectangle elongated in the direction of the width of the record track of the record medium so as to exceed the sense region of the magnetoresistive element.
摘要翻译： 磁阻头包括从面对记录介质的头的前端面设置的磁阻元件，用于将从记录介质的记录轨道泄漏的信号磁场的变化转换成电阻变化。 磁阻元件连接到一对端子，并且两个端子之间限定感测区域。 磁阻元件磁耦合到前磁通引导件，其前端在头部的前端面暴露在前磁通引导件的另一端处。 前通量引导件实际上是在记录介质的记录轨道的宽度方向上延伸的矩形的形式，以便超过磁阻元件的感测区域。
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3.发明授权Method for protecting a magnetoresistive head from damage due to electrostatic discharge 失效用于保护头部免受静电放电伤害的方法和装置
公开(公告)号：US6046890A
公开(公告)日：2000-04-04
申请号：US7572
申请日：1998-01-15
申请人： Kenichiro Yamada , Yuji Uehara , Junzo Toda
发明人： Kenichiro Yamada , Yuji Uehara , Junzo Toda
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/40 , G11B2005/3996 , G11B5/11 , G11B5/3106
摘要： A magnetoresistive head of the present invention is not easily damaged by electrostatic discharge, and is easy to manufacture. A magnetoresistance effect element is interposed between upper and lower shields composed of soft magnetic material through first and second gaps composed of an insulating material. The lower shield is connected to a slider via a slider protective film, which is an insulating substance. The magnetoresistive head is constructed so that a capacity Cg between the magnetoresistance effect element and the lower shield is 6.3 or more times a capacity between the lower shield and the slider by using a material (e.g., silicon carbide) exhibiting a large relative dielectric constant as, e.g., a second gap material.
摘要翻译： 本发明的磁阻头不易受到静电放电的损害，容易制造。 磁阻效应元件通过由绝缘材料构成的第一和第二间隙插在由软磁材料构成的上屏蔽和下屏蔽之间。 下屏蔽件通过作为绝缘物质的滑块保护膜连接到滑块。 磁阻磁头的构造使得通过使用表现出较大的相对介电常数的材料（例如，碳化硅），磁阻效应元件和下屏蔽之间的电容Cg是下屏蔽和滑块之间的容量的6.3倍或更多倍 ，例如第二间隙材料。
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公开(公告)号：US4546398A
公开(公告)日：1985-10-08
申请号：US403727
申请日：1982-07-30
申请人： Junzo Toda , Masao Hiyane
发明人： Junzo Toda , Masao Hiyane
CPC分类号： G11B5/1278
摘要： A perpendicular magnetic recording and reproducing head, including: a spiral coil of at least one electrically conductive thin film; and a main pole of a first thin magnetic film having an end for recording and reproducing information, the main pole and the spiral coil being electromagnetically coupled to each other. A perpendicular magnetic head such as this can be easily manufactured, can be adapted not only to floppy disks but also to rigid disks, is suitable for high-frequency operation, and has an improved recording/reproducing efficiency.
摘要翻译： 一种垂直磁记录和再现头，包括：至少一个导电薄膜的螺旋线圈; 以及具有用于记录和再现信息的端部的第一薄磁膜的主极，所述主极和所述螺旋线圈彼此电磁耦合。 这样的垂直磁头可以容易地制造，不仅可以适用于软盘，而且适用于刚性盘，适用于高频操作，并且具有改善的记录/再现效率。
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5.发明授权Thin film inductive head and magnetic writing/reading drive including the same 失效薄膜感应头和磁性写/读驱动器包括相同
公开(公告)号：US5774308A
公开(公告)日：1998-06-30
申请号：US730101
申请日：1996-10-15
申请人： Yoshinori Ohtsuka , Junzo Toda
发明人： Yoshinori Ohtsuka , Junzo Toda
CPC分类号： G11B5/3967 , G11B5/127 , G11B5/3103 , G11B5/3146 , G11B5/3163
摘要： A thin film inductive head for use in writing/reading magnetic signals in a magnetic disk drive or a magnetic tape unit, comprises two magnetic cores formed of respective magnetic layers, said two magnetic layers putting conductor coils therebetween in a vertical direction, front end portions thereof opposing to each other via a gap layer, a part of said front end portion of one magnetic layer having high saturation magnetic flux density rather than a remaining part thereof.
摘要翻译： 一种用于在磁盘驱动器或磁带单元中写入/读取磁信号的薄膜感应头包括由相应磁性层形成的两个磁芯，所述两个磁性层在其垂直方向上放置导体线圈，前端部分 通过间隙层彼此相对，一个磁性层的所述前端部分的一部分具有高的饱和磁通密度而不是其剩余部分。
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公开(公告)号：US5463517A
公开(公告)日：1995-10-31
申请号：US187680
申请日：1994-01-28
申请人： Junzo Toda , Susumu Aoyama
发明人： Junzo Toda , Susumu Aoyama
CPC分类号： G11B5/3903 , G11B5/3967
摘要： The ends of lead conductor layers, which ends mark the boundaries of a signal detection area are made substantially perpendicular in the vicinity of a magnetoresistance element, and are sloped in the vicinity of an upper shield so that the lead conductor layers are thicker away from the signal detection area; a recording gap is a regularly shaped gap at least over a spatial range corresponding to a signal detection area.
摘要翻译： 末端标记信号检测区域的边界的引线导体层的端部在磁阻元件附近基本垂直，并且在上部屏蔽层附近倾斜，使得引线导体层的厚度远离 信号检测区域; 记录间隙至少在对应于信号检测区域的空间范围上是规则形状的间隙。
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