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1. 发明授权

US08786986B2 Head-slider including thin-film magnetic-recording head having reduced thermal protrusion 有权
标题翻译：磁头滑块包括具有减小的热突起的薄膜磁记录头
公开(公告)号：US08786986B2
公开(公告)日：2014-07-22
申请号：US12642739
申请日：2009-12-18
申请人： Shigeo Fujita , Masahiko Soga , Hideaki Tanaka , Yuji Ueda , Tomohiro Okada , Takayoshi Ohtsu , Wataru Kimura , Yohji Maruyama
发明人： Shigeo Fujita , Masahiko Soga , Hideaki Tanaka , Yuji Ueda , Tomohiro Okada , Takayoshi Ohtsu , Wataru Kimura , Yohji Maruyama
IPC分类号： G11B5/39
CPC分类号： G11B5/1278 , G11B5/3133 , G11B5/3136 , G11B5/3967 , G11B5/6005 , G11B5/6064 , G11B2005/0005
摘要： A head-slider. The head-slider includes a slider, and a thin-film magnetic-recording head. The thin-film magnetic-recording head includes: a read element; a write element; a non-magnetic insulating protective layer disposed around both read and write elements; a resist disposed at a position further away from an air-bearing surface than the read element; and, a hard-material member including a material selected from the group consisting of silicon carbide and tungsten, which is disposed at a position further away from the air-bearing surface than the read element and the write element. Both an end of the resist and an end of the hard-material member overlap the write element when viewed in a stacking direction. A ratio of a distance from the air-bearing surface to a deepest end of the hard-material member to a distance from the air-bearing surface to a deepest end of the resist is at least 0.9.
摘要翻译：头滑块。磁头滑动器包括滑块和薄膜磁记录头。薄膜磁记录头包括：读取元件; 写元素设置在读取和写入元件周围的非磁性绝缘保护层; 设置在远离所述读取元件的空气轴承表面的位置处的抗蚀剂; 以及包括选自碳化硅和钨的材料的硬质材料构件，其被设置在比读取元件和写入元件更远离空气轴承表面的位置处。当在堆叠方向上观察时，抗蚀剂的一端和硬质材料构件的一端与写入元件重叠。从空气轴承表面到硬质材料构件的最深端的距离与从空气轴承表面到抗蚀剂的最深端的距离的比率至少为0.9。

2. 发明授权

US08711520B2 Device with a floating head having a heater element 有权
标题翻译：具有具有加热器元件的浮动头的装置
公开(公告)号：US08711520B2
公开(公告)日：2014-04-29
申请号：US12970775
申请日：2010-12-16
申请人： Minoru Koike , Eiji Nakanishi , Yoshinori Takeuchi , Hiroshi Agari , Hiroyuki Matsumoto , Takayoshi Ohtsu
发明人： Minoru Koike , Eiji Nakanishi , Yoshinori Takeuchi , Hiroshi Agari , Hiroyuki Matsumoto , Takayoshi Ohtsu
IPC分类号： G11B5/60 , G11B21/21
CPC分类号： G11B5/84 , G11B5/6005 , G11B5/6064 , G11B19/048
摘要： In one embodiment, a method of manufacturing a magnetic disk includes rotating a magnetic disk, supporting a floating head on the rotating magnetic disk, the floating head having a slider body and an element unit formed on a trailing edge of the slider body, contacting a floating surface of the slider body with the magnetic disk, and protruding a portion of the floating head toward the magnetic disk due to application of power to a heater element within the element unit, wherein the element unit is positioned away from the magnetic disk. In another embodiment, a floating head includes a slider body comprising AlTiC, an element unit positioned on a trailing edge of the slider body, the element unit having an initial recess amount of at least about 4 nm, and a heater element positioned within an alumina protective film of the element unit.
摘要翻译：在一个实施例中，制造磁盘的方法包括旋转磁盘，将浮动头支撑在旋转磁盘上，浮动头具有滑块体和形成在滑块主体的后缘上的元件单元，滑块本体的浮动表面与磁盘，并且由于向元件单元内的加热器元件施加电力而将浮动头的一部分朝向磁盘突出，其中元件单元位于远离磁盘的位置。在另一个实施例中，浮动头包括滑块主体，其包括AlTiC，位于滑块主体的后缘上的元件单元，元件单元具有至少约4nm的初始凹陷量，以及位于氧化铝内的加热器元件元件单元的保护膜。

3. 发明授权

US08284521B2 Magnetic head slider 失效
标题翻译：磁头滑块
公开(公告)号：US08284521B2
公开(公告)日：2012-10-09
申请号：US11998727
申请日：2007-11-30
申请人： Takayoshi Ohtsu
发明人： Takayoshi Ohtsu
IPC分类号： G11B5/60 , G11B5/127
CPC分类号： G11B5/3133 , G11B5/3967 , G11B5/6064 , G11B5/607
摘要： Embodiments of the present invention help to provide a flying height adjusting type magnetic head slider with reduced influence of a heater coil induction field. According to one embodiment, a magnetic head slider comprises a heater, a read element, and a write element, which are formed on a substrate. The heater is formed between a lower magnetic shield of the read element and the substrate by meandering a heater coil in direction Y going away from ABS. Magnetic fields by generated in direction Y orthogonal to a track width direction X of the lower magnetic field upon energization of the heater coil are offset each other, exerting no influence on the magnetized state in the track width direction X of the lower magnetic shield. A magnetic field hx induced in the track width direction X of the lower magnetic shield is coincident with the magnetizing direction of the lower magnetic shield, acting to maintain the magnetized state of the lower magnetic shield.
摘要翻译：本发明的实施例有助于提供一种减小加热器线圈感应场的影响的飞行高度调节型磁头滑块。根据一个实施例，磁头滑块包括形成在基板上的加热器，读取元件和写入元件。加热器通过在远离ABS的方向Y上蜿蜒加热线圈而形成在读取元件的下部磁屏蔽和基板之间。在加热线圈通电时与下磁场的磁道宽度方向X正交的方向Y上产生的磁场相互抵消，对下磁屏蔽的磁道宽度方向X上的磁化状态没有影响。在下磁屏蔽的磁道宽度方向X上感应的磁场hx与下磁屏蔽的磁化方向一致，用于保持下磁屏蔽的磁化状态。

4. 发明申请

US20100157483A1 Magnetic Head Slider Inhibiting A Side Erase And Method Of Manufacturing Thereof 有权
标题翻译：磁头滑块抑制侧面擦除及其制造方法
公开(公告)号：US20100157483A1
公开(公告)日：2010-06-24
申请号：US12633588
申请日：2009-12-08
申请人： Takayoshi Ohtsu
发明人： Takayoshi Ohtsu
IPC分类号： G11B5/48
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/6005
摘要： In one embodiment, a magnetic head slider includes a write head having a single magnetic pole, the single magnetic pole having a main magnetic pole piece that extends to a medium opposing surface facing a magnetic disk. The main magnetic pole piece generates a recording magnetic field from a medium opposing surface side end face thereof being divided into an injection region and a non-injection region. Impurities which deteriorate magnetic properties are present in a higher concentration in the injection region relative to a concentration of the impurities in the non-injection region due to injection of the impurities in the injection region. The non-injection region has a narrower width at a leading end of the medium opposing surface side end face than at a trailing end of the medium opposing surface side end face. In another embodiment, the magnetic head slider may be incorporated into a system including a magnetic recording medium, at least one magnetic head, and a control unit coupled to the magnetic head.
摘要翻译：在一个实施例中，磁头滑块包括具有单个磁极的写入头，该单个磁极具有延伸到与磁盘相对的介质相对表面的主磁极片。主磁极片从介质相对表面侧端面产生记录磁场，其被分成喷射区域和非喷射区域。由于注入区域中的杂质的注入，相对于非注入区域中的杂质浓度，注入区域中的磁性降低的杂质存在于较高的浓度。非注入区域在介质相对表面侧端面的前端处比在介质相对表面侧端面的后端处具有较窄的宽度。在另一个实施例中，磁头滑块可以结合到包括磁记录介质，至少一个磁头和耦合到磁头的控制单元的系统中。

5. 发明授权

US07723982B2 Testing and manufacturing method of magnetic heads 有权
标题翻译：磁头的测试和制造方法
公开(公告)号：US07723982B2
公开(公告)日：2010-05-25
申请号：US11656337
申请日：2007-01-19
申请人： Shinji Sasaki , Makoto Torigoe , Takayoshi Ohtsu , Kouji Kataoka
发明人： Shinji Sasaki , Makoto Torigoe , Takayoshi Ohtsu , Kouji Kataoka
IPC分类号： G01R33/12 , G01B7/14
CPC分类号： G11B5/455
摘要： A magnetic head suffers mechanical stresses by striking against a magnetic disc surface and dust, so that there are problems such as the reduction of reproduction output due to the mechanical stresses and the reversal of output polarity due to the mechanical stresses. Embodiments in accordance with the present invention relate to a method of testing reliability of reproduction elements of a magnetic head against outside stress. In a first step, a Giant Magnetoresistive (GMR) element on a row bar of the object of inspection, or a GMR element on a slider is measured for the output against external magnetic field. In the next step, prescribed shearing stress is applied with indenter to the edge where the GMR element-formed surface of the row bar or slider and the air-bearing surface are crossed. Then, output of the GMR element is measured again. Lastly, the outputs of the GMR element before and after application of stress are compared. When the amount of degradation is higher than the prescribed standard, the product is regarded as disqualified. Satisfaction of the prescribed standard is regarded as acceptance.
摘要翻译：磁头通过撞击磁盘表面和灰尘而受到机械应力，因此存在诸如由于机械应力而导致的再现输出的减少和由于机械应力而导致的输出极性反转的问题。根据本发明的实施例涉及一种测量磁头的再现元件对外部应力的可靠性的方法。在第一步中，测量检测对象的行条上的巨磁阻（GMR）元件或滑块上的GMR元件，以抵抗外部磁场的输出。在下一步骤中，将压痕施加规定的剪切应力到排条或滑块的GMR元件形成表面和空气轴承表面交叉的边缘。然后，再次测量GMR元件的输出。最后，比较应用前后GMR元件的输出。当降解量高于规定标准时，产品被认定为不合格品。对规定标准的满意度被视为验收。

6. 发明授权

US07684153B2 Magnetic head slider with ground and heater terminal arrangement and magnetic head assembly 失效
标题翻译：磁头滑块，带有接地和加热器端子排列和磁头组件
公开(公告)号：US07684153B2
公开(公告)日：2010-03-23
申请号：US11439687
申请日：2006-05-23
申请人： Takayoshi Ohtsu , Nobumasa Nishiyama
发明人： Takayoshi Ohtsu , Nobumasa Nishiyama
IPC分类号： G11B5/48 , G11B5/33
CPC分类号： G11B5/486 , G11B5/314 , G11B5/6005 , G11B5/607
摘要： Crosstalk from a write signal on wiring on a suspension needs to be reduced since an ESD withstand voltage is decreased due to high sensitivity of a GMR head. In one embodiment, a terminal arrangement on an element-forming surface of a magnetic head slider consists of a ground terminal G, a read terminal R+, a read terminal R−, a write terminal W+ and a write terminal W− in order from the outside. With this terminal arrangement, the wiring order on a suspension consists of a read wire R−, a read wire R+, a ground line G, a write wire W− and a write wire W+ in an arrangement unlike the terminal arrangement. In other words, the ground line G is interposed between the write wires W and the read wires R. In this way, the wiring of the write wire W and the wiring of the read wire R are never arranged adjacently to each other, and further, the ground line G is interposed between the write wires W and the read wires R, thereby reducing crosstalk on the read wires R caused by a writing current with a high frequency which flows in the write wires W.
摘要翻译：由于GMR磁头的高灵敏度，ESD耐受电压降低，所以需要降低悬架上布线上写信号的串扰。在一个实施例中，磁头滑块的元件形成表面上的端子装置由接地端子G，读取端子R +，读取端子R-，写入端子W +和写入端子W-按照从外。利用该端子装置，与终端装置不同，在悬架上的接线顺序由读线R，读线R +，接地线G，写线W-和写线W +组成。换句话说，接地线G被插入在写入线W和读取导线R之间。这样，写入线W和读取的线R的布线的布线将不会彼此相邻布置，并且进一步接地线G被插入在写入线W和读出导线R之间，从而减少由写入线W中流动的高频写入电流引起的读取线R上的串扰。

7. 发明授权

US07623323B2 Magnetoresistive head and read/write separation-type magnetic head 失效
标题翻译：磁阻头和读/写分离型磁头
公开(公告)号：US07623323B2
公开(公告)日：2009-11-24
申请号：US11227677
申请日：2005-09-14
申请人： Koichi Nishioka , Shuichi Kojima , Koji Kataoka , Takayoshi Ohtsu
发明人： Koichi Nishioka , Shuichi Kojima , Koji Kataoka , Takayoshi Ohtsu
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3912 , G11B5/3929 , G11B2005/3996
摘要： Embodiments of the invention provide a reading head structure that ensures a stable magnetic moment of a pinned layer against a great external magnetic field, and minimizes the pinned-layer damage occurring during air-bearing surface machining. In one embodiment, a magnetoresistive head is based on a spin-valve effect and has free layers, a stacked-type pinned layer, and an electroconductive nonmagnetic spacer layer positioned between the free layers and the stacked-type pinned layer. The stacked-type pinned layer includes three ferromagnetic films, and antiferromagnetic coupling films interposed between the ferromagnetic films. Of these ferromagnetic films, the first two films have a high coercivity and a high resistivity. The third ferromagnetic film is made of a material that gives a great magnetoresistive effect. The sum of the magnetic moments generated from the stacked-type pinned layer is substantially zero.
摘要翻译：本发明的实施例提供了一种读取头结构，其确保针对大的外部磁场的被钉扎层的稳定的磁矩，并且使在空气轴承表面加工期间发生的钉扎层损伤最小化。在一个实施例中，磁阻头基于自旋阀效应，并且具有自由层，层叠型钉扎层和位于自由层和堆叠型钉扎层之间的导电非磁性间隔层。堆叠型钉扎层包括三个铁磁膜和介于铁磁膜之间的反铁磁耦合膜。在这些铁磁膜中，前两个膜具有高矫顽力和高电阻率。第三铁磁膜由具有很大磁阻效应的材料制成。从堆叠型钉扎层产生的磁矩的总和基本为零。

8. 发明授权

US07558188B2 Magnetic head having durability against static electricity with modified time constant 失效
标题翻译：具有改善时间常数的静电耐久性的磁头
公开(公告)号：US07558188B2
公开(公告)日：2009-07-07
申请号：US11291014
申请日：2005-11-29
申请人： Takayoshi Ohtsu , Shoji Natori
发明人： Takayoshi Ohtsu , Shoji Natori
IPC分类号： G11B5/127
CPC分类号： G11B5/40
摘要： Embodiments of the invention provide a read head which is implemented in a magnetic disk drive that supports a high recording density and a high transfer rate and is excellent in static electricity durability. In one embodiment, a magnetic head wherein a charge diffuses from a read element to a slider at a time constant of about 100 ms or less.
摘要翻译：本发明的实施例提供了一种在支持高记录密度和高传输速率并且静电耐久性优异的磁盘驱动器中实现的读头。在一个实施例中，其中电荷以大约100ms或更小的时间常数从读取元件扩散到滑块的磁头。

9. 发明申请

US20070253105A1 Thin film magnetic head and fabrication process 失效
标题翻译：薄膜磁头和制造工艺
公开(公告)号：US20070253105A1
公开(公告)日：2007-11-01
申请号：US11786458
申请日：2007-04-10
申请人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
发明人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
IPC分类号： G11B5/147 , G11B5/127
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3163 , G11B5/3929 , G11B2005/3996 , H01F41/34 , Y10T29/49021
摘要： Embodiments in accordance with the present invention provide a thin film magnetic head for preventing a short-circuit failure during formation of a track portion or a stripe-height portion and improving a yield. In one embodiment, a stripe-height direction is first formed, and then a track-width direction is formed. A third insulating film having a smoothly shaped wall surface is formed on a first insulating film during stripe-height formation. During formation of the third insulating film, an optimized lift-off pattern is used to smooth an edge shape.
摘要翻译：根据本发明的实施例提供了一种薄膜磁头，用于防止在形成轨道部分或条纹高度部分期间发生短路故障并提高产量。在一个实施例中，首先形成条纹高度方向，然后形成轨道宽度方向。在条纹高度形成期间，在第一绝缘膜上形成具有平滑形状的壁表面的第三绝缘膜。在第三绝缘膜的形成期间，使用优化的剥离图案来平滑边缘形状。

10. 发明申请

US20060268459A1 Magnetic head slider with terminal arrangement and magnetic head assembly 失效
标题翻译：磁头滑块，带端子排列和磁头组件
公开(公告)号：US20060268459A1
公开(公告)日：2006-11-30
申请号：US11439687
申请日：2006-05-23
申请人： Takayoshi Ohtsu , Nobumasa Nishiyama
发明人： Takayoshi Ohtsu , Nobumasa Nishiyama
IPC分类号： G11B5/60
CPC分类号： G11B5/486 , G11B5/314 , G11B5/6005 , G11B5/607
摘要： Crosstalk from a write signal on wiring on a suspension needs to be reduced since an ESD withstand voltage is decreased due to high sensitivity of a GMR head. In one embodiment, a terminal arrangement on an element-forming surface of a magnetic head slider consists of a ground terminal G, a read terminal R+, a read terminal R−, a write terminal W+ and a write terminal W− in order from the outside. With this terminal arrangement, the wiring order on a suspension consists of a read wire R−, a read wire R+, a ground line G, a write wire W− and a write wire W+ in an arrangement unlike the terminal arrangement. In other words, the ground line G is interposed between the write wires W and the read wires R. In this way, the wiring of the write wire W and the wiring of the read wire R are never arranged adjacently to each other, and further, the ground line G is interposed between the write wires W and the read wires R, thereby reducing crosstalk on the read wires R caused by a writing current with a high frequency which flows in the write wires W.
摘要翻译：由于GMR磁头的高灵敏度，ESD耐受电压降低，所以需要降低悬架上布线上写信号的串扰。在一个实施例中，磁头滑块的元件形成表面上的端子装置由接地端子G，读取端子R +，读取端子R-，写入端子W +和写入端子W-按照从外。利用该端子装置，与终端装置不同，在悬架上的接线顺序由读线R，读线R +，接地线G，写线W-和写线W +组成。换句话说，地线G插入在写入线W和读取导线R之间。这样，写入线W和读取的线R的布线的布线将不会彼此相邻布置，并且进一步接地线G被插入在写入线W和读出导线R之间，从而减少由写入线W中流动的高频写入电流引起的读取线R上的串扰。

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