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31. 发明授权

US08270109B2 Magnetic head slider inhibiting a side erase and method of manufacturing thereof 有权
标题翻译：抑制侧面擦除的磁头滑块及其制造方法
公开(公告)号：US08270109B2
公开(公告)日：2012-09-18
申请号：US12633588
申请日：2009-12-08
申请人： Takayoshi Ohtsu
发明人： Takayoshi Ohtsu
IPC分类号： G11B5/127 , G11B5/187
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。

32. 发明申请

US20110116192A1 HEAD-SLIDER INCLUDING THIN-FILM MAGNETIC-RECORDING HEAD HAVING REDUCED THERMAL PROTRUSION 有权
标题翻译：包括具有减少热导率的薄膜磁记录头的头部滑盖
公开(公告)号：US20110116192A1
公开(公告)日：2011-05-19
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： G11B5/60
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。

33. 发明授权

US07911738B2 Magnetic head slider with resistive heating film meandering in stacking direction 有权
标题翻译：磁头滑块，电阻加热膜在堆叠方向上蜿蜒曲折
公开(公告)号：US07911738B2
公开(公告)日：2011-03-22
申请号：US11788511
申请日：2007-04-19
申请人： Masayuki Kurita , Toshiya Shiramatsu , Masanori Tanabe , Takayoshi Ohtsu
发明人： Masayuki Kurita , Toshiya Shiramatsu , Masanori Tanabe , Takayoshi Ohtsu
IPC分类号： G11B5/31 , G11B5/60 , G11B5/56 , G11B5/39
CPC分类号： G11B5/6005 , G11B5/6064
摘要： According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusion attributable to heat generated by a recording current or environmental temperature. A magnetic head slider includes a thin-film head unit including a read element, a heater having a thin heating line extended above and below the read element, a write element, and an insulating layer of alumina (Al2O3) or the like insulating those components. The thin heating line of the heater is formed from a thin resistive film of NiCr or the like. The thin heating line of the heater is extended above and below the read element so as to meander in a zigzag shape in a direction perpendicular to the device forming surface. The thin heating line has a thickness between about 0.1 and 0.2 μm, a width between about 1 and 3 μm, a length of about 100 μm, and a resistance between about 50 and 500 Ω.
摘要翻译：根据本发明的实施例，需要设置有设置在读取元件附近以调节飞行高度的加热器的磁头滑块，以增加由加热器产生的热量的热突起，而不增加由于由记录当前或环境温度。磁头滑块包括：薄膜头单元，其包括读取元件，具有在读取元件上方和下方延伸的薄加热线的加热器，写入元件以及绝缘这些元件的氧化铝（Al 2 O 3）等的绝缘层。加热器的细加热线由NiCr等的薄电阻膜形成。加热器的细加热线在读取元件的上方和下方延伸，以便在垂直于器件形成表面的方向上以锯齿形弯曲。薄加热线具有约0.1至0.2μm之间的厚度，约1至3μm的宽度，约100μm的长度和约50至500之间的电阻。

34. 发明授权

US07595952B2 Magnetic head evaluation apparatus and method for manufacturing magnetic disk drive using the same 有权
标题翻译：磁头评价装置及使用其的磁盘驱动器的制造方法
公开(公告)号：US07595952B2
公开(公告)日：2009-09-29
申请号：US11880400
申请日：2007-07-20
申请人： Takayoshi Ohtsu
发明人： Takayoshi Ohtsu
IPC分类号： G11B21/02
CPC分类号： G11B5/455
摘要： Embodiments in accordance with the present invention provide a low-priced magnetic head evaluation apparatus capable of evaluating characteristics at high speed. According to one embodiment, a magnetic head evaluation apparatus includes a spindle motor, a VCM actuator as a head moving mechanism, and a ramp mechanism. A spindle motor used in a product HDD is used for the spindle motor. A VCM actuator used in the product HDD is used for the VCM actuator. A ramp mechanism used in the product HDD is used for the ramp mechanism. The apparatus further includes a non-contact type position detector such as a laser length measuring instrument. The non-contact type position detector irradiates a side surface of a load beam with a laser beam. An absolute position of the load beam over a magnetic disk is detected by detecting light reflected off the side surface of the load beam. Mounting of an HGA relative to the load beam is achieved by using a caulking hole in a mount plate.
摘要翻译：根据本发明的实施例提供一种能够高速评价特性的低价磁头评价装置。根据一个实施例，磁头评估装置包括主轴电动机，作为磁头移动机构的VCM致动器和斜坡机构。主轴电机使用产品HDD中使用的主轴电机。产品HDD中使用的VCM执行器用于VCM执行器。用于产品HDD的斜坡机构用于斜坡机构。该装置还包括诸如激光长度测量仪器的非接触型位置检测器。非接触型位置检测器用激光束照射负载光束的侧面。通过检测从负载梁的侧表面反射的光来检测负载光束在磁盘上的绝对位置。通过在安装板上使用铆接孔来实现HGA相对于负载梁的安装。

35. 发明授权

US07292416B2 CPP magneto resistive head with decreased variation in asymmetry and output 有权
标题翻译： CPP磁阻头，不对称和输出变化减小
公开(公告)号：US07292416B2
公开(公告)日：2007-11-06
申请号：US11372302
申请日：2006-03-08
申请人： Takayoshi Ohtsu , Satoshi Shigematsu , Kouji Nishioka , Takao Imagawa , Kouji Kataoka , Masatoshi Arasawa , Norifumi Miyamoto
发明人： Takayoshi Ohtsu , Satoshi Shigematsu , Kouji Nishioka , Takao Imagawa , Kouji Kataoka , Masatoshi Arasawa , Norifumi Miyamoto
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3116 , G11B5/3909 , G11B5/3932 , G11B5/3967 , G11B2005/3996
摘要： A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.
摘要翻译：磁阻头包括具有夹在其间的非磁性中间膜的第一和第二自由磁性膜的自由磁性层，第一和第二自由磁性膜的各自的磁化方向是反平行的。自由磁性层在磁道宽度方向上的长度为200nm以下，饱和磁通密度与第一自由磁性膜的膜厚的乘积与第二自由磁性膜的膜厚之差在1〜3nmT的范围内。通过这种结构，在200nm或更小的轨道宽度处，输出的变化和不对称性的变化大大降低。

36. 发明申请

US20070247758A1 Magnetic head slider and head gimbals assembly 有权
标题翻译：磁头滑块和头部万向节组件
公开(公告)号：US20070247758A1
公开(公告)日：2007-10-25
申请号：US11788511
申请日：2007-04-19
申请人： Masayuki Kurita , Toshiya Shiramatsu , Masanori Tanabe , Takayoshi Ohtsu
发明人： Masayuki Kurita , Toshiya Shiramatsu , Masanori Tanabe , Takayoshi Ohtsu
IPC分类号： G11B5/60
CPC分类号： G11B5/6005 , G11B5/6064
摘要： According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusion attributable to heat generated by a recording current or environmental temperature. A magnetic head slider includes a thin-film head unit including a read element, a heater having a thin heating line extended above and below the read element, a write element, and an insulating layer of alumina (Al2O3) or the like insulating those components. The thin heating line of the heater is formed from a thin resistive film of NiCr or the like. The thin heating line of the heater is extended above and below the read element so as to meander in a zigzag shape in a direction perpendicular to the device forming surface. The thin heating line has a thickness between about 0.1 and 0.2 μm, a width between about 1 and 3 μm, a length of about 100 μm, and a resistance between about 50 and 500Ω.
摘要翻译：根据本发明的实施例，需要设置有设置在读取元件附近以调节飞行高度的加热器的磁头滑块，以增加由加热器产生的热量的热突起，而不增加由于由记录当前或环境温度。磁头滑动器包括薄膜头单元，其包括读取元件，具有在读取元件上方和下方延伸的薄加热线的加热器，写入元件和氧化铝绝缘层（Al 2 > O 3等）绝缘这些部件。加热器的细加热线由NiCr等的薄电阻膜形成。加热器的细加热线在读取元件的上方和下方延伸，以便在垂直于器件形成表面的方向上以锯齿形弯曲。薄加热线具有约0.1至0.2μm之间的厚度，约1至3μm之间的宽度，约100μm的长度和约50至500mega之间的电阻。

37. 发明申请

US20070188167A1 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：US20070188167A1
公开(公告)日：2007-08-16
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
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。

38. 发明授权

US07221544B2 Magnetic recording apparatus and magnetic head 失效
标题翻译：磁记录装置和磁头
公开(公告)号：US07221544B2
公开(公告)日：2007-05-22
申请号：US10206751
申请日：2002-07-26
申请人： Takayoshi Ohtsu , Shinji Narishige
发明人： Takayoshi Ohtsu , Shinji Narishige
IPC分类号： G11B5/66
CPC分类号： G11B5/00 , G11B5/03 , G11B5/1278 , G11B5/3967 , G11B2005/001 , G11B2005/0016
摘要： Formation of magnetic domains in a perpendicularly magnetized medium comprising an underlayer of a soft magnetic layer is prevented by appropriate magnetic domain control in the soft magnetic layer. One method controls magnetic domains of the soft magnetic layer by applying an external magnetic field to the medium. Another method provides a mechanism in the magnetic head for generating a magnetic field to control the magnetic domains of the soft magnetic layer of the medium.
摘要翻译：通过在软磁性层中适当的磁畴控制来防止在包括软磁性层的底层的垂直磁化介质中形成磁畴。一种方法是通过向介质施加外部磁场来控制软磁性层的磁畴。另一种方法提供了磁头中用于产生磁场以控制介质的软磁性层的磁畴的机构。

39. 发明申请

US20060132985A1 Magnetic head with durability against static electricity 失效
标题翻译：磁头耐静电
公开(公告)号：US20060132985A1
公开(公告)日：2006-06-22
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： G11B5/33 , 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。

40. 发明授权

US06903906B2 Magnetic head with a lamination stack to control the magnetic domain 失效
标题翻译：磁头具有层叠叠层以控制磁畴
公开(公告)号：US06903906B2
公开(公告)日：2005-06-07
申请号：US10219647
申请日：2002-08-14
申请人： Akira Morinaga , Koichi Nishioka , Takayoshi Ohtsu , Norifumi Miyamoto , Shuichi Kojima
发明人： Akira Morinaga , Koichi Nishioka , Takayoshi Ohtsu , Norifumi Miyamoto , Shuichi Kojima
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G01R33/098 , G11B5/3909 , G11B5/3912 , G11B5/3932 , G11B5/3967 , G11B2005/3996
摘要： The invention provides a magnetic domain controlling structure wherein a lamination stack M1 adjacent to a magnetoresistive stack of a GMR, CPP-GMR or TMR magnetic head has at least two magnetic films 14 and 16 anti-ferromagnetically coupled through a non-magnetic film 15, or the lamination stack M2 disposed on the end portions of the free layer of the magnetoresistive stack of the GMR magnetic head has a magnetic layer anti-ferromagnetically coupled to the free layer 2 through the non-magnetic film 27. Ferromagnetic film deposition dead zone area problems and the consequent problem of film rippling in free layer portions that reduces element sensitivity are prevented, as is the problem of increased error from read drift in the magnetic field exchange coupling method, resulting in a highly stable, highly sensitive MR head with no loss of magnetic field intensity.
摘要翻译：本发明提供了一种磁畴控制结构，其中与GMR，CPP-GMR或TMR磁头的磁阻堆叠相邻的叠片叠M 1具有至少两个通过非磁性膜15反铁磁耦合的磁膜14和16 或者设置在GMR磁头的磁阻堆叠的自由层的端部上的层叠叠层M 2具有通过非磁性膜27与自由层2反铁磁耦合的磁性层。铁磁膜沉积死区面积问题以及由于在磁场交换耦合方法中读取漂移引起的误差增加的问题，可以防止降低元件灵敏度的自由层部分中的膜起伏的问题，导致高度稳定，高度的敏感MR磁头，不损失磁场强度。

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