公开(公告)号：US5999378A

公开(公告)日：1999-12-07

申请号：US980871

申请日：1997-12-01

申请人： Kazuhiro Saito ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Masashi Sahashi ,  Hiroaki Kawashima ,  Taro Oike ,  Koichi Terunuma ,  Haruyuki Morita

发明人： Kazuhiro Saito ,  Hiromi Fuke ,  Hitoshi Iwasaki ,  Yuzo Kamiguchi ,  Masashi Sahashi ,  Hiroaki Kawashima ,  Taro Oike ,  Koichi Terunuma ,  Haruyuki Morita

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B2005/3996

摘要： A magnetoresistance effect head comprises a giant magnetoresistance effect film, a pair of leads to supply an electric current to the giant magnetoresistance effect head, and upper and lower magnetic shielding layers made of a crystalline soft magnetic film and disposed to hold the giant magnetoresistance effect film therebetween with a magnetic gap film intervened, wherein the surface roughness of an under layer of the giant magnetoresistance effect film is determined so that a center period L of the surface roughness satisfies L>70 nm.

摘要翻译： 磁阻效应头包括巨磁阻效应膜，一对向巨磁电阻效应头供电的引线，以及由结晶软磁膜制成的上下磁屏蔽层，并设置成保持巨磁阻效应膜 其间插入有磁隙膜，其中确定巨磁阻效应膜的下层的表面粗糙度，使得表面粗糙度的中心周期L满足L> 70nm。

公开(公告)号：US20100123966A1

公开(公告)日：2010-05-20

申请号：US12274470

申请日：2008-11-20

申请人： Yosuke ANTOKU ,  Takeo Kagami ,  Katsuki Kurihara ,  Taro Oike ,  Masashi Sano

发明人： Yosuke ANTOKU ,  Takeo Kagami ,  Katsuki Kurihara ,  Taro Oike ,  Masashi Sano

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076 ,  G11B2005/0005

摘要： The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.

摘要翻译： 本发明涉及能够有效地检测热凹凸的磁头，磁头组件和磁记录/重放装置。 根据本发明的磁头包括发热电阻器，记录线圈和电阻元件。 发热电阻适用于在供电时产生热量，使得发热导致空气轴承表面的至少一部分热膨胀和突出。 记录线圈适于产生记录磁场，并且电阻元件设置为比记录线圈更靠近空气轴承表面并与加热器串联或并联连接。 因此，电阻元件可以与用于供电的加热器共用公共布线，这消除了布线的浪费并实现了小型化。

公开(公告)号：US06963474B2

公开(公告)日：2005-11-08

申请号：US10026877

申请日：2001-12-27

申请人： Makoto Yoshida ,  Taro Oike ,  Noboru Yamanaka

发明人： Makoto Yoshida ,  Taro Oike ,  Noboru Yamanaka

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/40 ,  G11B5/60 ,  G11B19/04

CPC分类号： G11B5/3967 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/40 ,  G11B19/04

摘要： A thin film magnetic head includes a slider, at least one inductive type electromagnetic conversion element and a thermal diffusion film. The inductive type electromagnetic conversion element includes a first magnetic film, a second magnetic film, a gap film, a coil film and an insulating film which are supported by the slider. The coil film is embedded in the insulating film. The thermal diffusion film is made of a metallic film, and disposed in the heat transmission path from the coil film toward the slider.

摘要翻译： 薄膜磁头包括滑块，至少一个感应式电磁转换元件和热扩散膜。 感应式电磁转换元件包括由滑块支撑的第一磁性膜，第二磁性膜，间隙膜，线圈膜和绝缘膜。 线圈膜嵌入绝缘膜。 热扩散膜由金属膜制成，并且设置在从线圈膜向滑块的传热路径中。

公开(公告)号：US20060187564A1

公开(公告)日：2006-08-24

申请号：US11319164

申请日：2005-12-28

申请人： Isamu Sato ,  Taro Oike ,  Naoki Hanashima

发明人： Isamu Sato ,  Taro Oike ,  Naoki Hanashima

IPC分类号： G11B5/02

CPC分类号： G11B5/1278 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A heat assisted magnetic recording head is provided, which can prevent an effect of a heat in a laser diode when a magnetic recording region is heated by a heating laser beam and which can reduce its size and weight. In the heat assisted magnetic recording head, a recording magnetic pole, a magnetic recording element, a magnetic read element, an optical waveguide, and an irradiating optical waveguide are attached to a floating slider provided below a suspension. The laser diode is arranged on an opposite side of the suspension to the floating slider. The heating laser beam emitted from the laser diode is directed to the irradiating optical waveguide through the optical waveguide, so that a magnetic recording medium is irradiated with the heating laser beam exiting from the irradiating optical waveguide.

摘要翻译： 提供了一种热辅助磁记录头，当磁记录区域被加热激光束加热并且可以减小其尺寸和重量时，可以防止激光二极管中的热量的影响。 在热辅助磁记录头中，记录磁极，磁记录元件，磁读取元件，光波导和照射光波导安装在设置在悬架下方的浮动滑块上。 激光二极管布置在与浮动滑块的悬架的相对侧上。 从激光二极管发射的加热激光束通过光波导被引导到照射光波导，使得从记录光波导出射的加热激光束照射磁记录介质。

公开(公告)号：US06952866B2

公开(公告)日：2005-10-11

申请号：US10679474

申请日：2003-10-07

申请人： Makoto Yoshida ,  Taro Oike ,  Atsushi Iijima

发明人： Makoto Yoshida ,  Taro Oike ,  Atsushi Iijima

IPC分类号： G11B5/31 ,  G11B5/127 ,  H04R31/00

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Method of manufacturing a thin film magnetic head which can exhibit a high-performance head characteristic without complicating the manufacturing procedure. A coil connection is integrated into one body and constituted part of the thin film coil. A connection middle pattern is provided on the coil connection at the time of forming a pole tip so that the position of the upper surface of the connection middle pattern becomes higher than that of the top pole tip. After the whole portion is covered by an insulating film, the connection middle pattern also can be exposed by polishing the surface of the insulating film until the top pole tip is exposed. Therefore, unlike the case where no connection middle pattern is provided, it is not necessary to form an opening by partially removing part of the insulating film. As a result, the number of manufacturing steps can be reduced.

摘要翻译： 制造可以呈现高性能头部特性而不使制造过程复杂化的薄膜磁头的方法。 线圈连接被集成到一个主体中并构成薄膜线圈的一部分。 在形成极尖时，在线圈连接部上设置连接中间图形，使得连接中间图案的上表面的位置比顶极尖端的位置高。 在整个部分被绝缘膜覆盖之后，连接中间图案也可以通过抛光绝缘膜的表面而暴露，直到顶极尖端暴露。 因此，与不设置连接中间图案的情况不同，不需要通过部分去除绝缘膜的一部分来形成开口。 结果，可以减少制造步骤的数量。

公开(公告)号：US06724570B2

公开(公告)日：2004-04-20

申请号：US09800581

申请日：2001-03-08

申请人： Makoto Yoshida ,  Taro Oike ,  Atsushi Iijima

发明人： Makoto Yoshida ,  Taro Oike ,  Atsushi Iijima

IPC分类号： G11B5147

CPC分类号： G11B5/313 ,  G11B5/012 ,  G11B5/3116 ,  G11B5/4886

摘要： A thin film magnetic head having excellent recording characteristics is provided. In a structure of the thin film magnetic head, a thickness LT (&mgr;m) of a top pole chip and a distance LD (&mgr;m) between a position of a front edge surface of a top yoke and a position of an air bearing surface are adapted to satisfy LD≧LT−2.0 (&mgr;m) (LD≧0, LT

摘要翻译： 提供具有优异记录特性的薄膜磁头。 在薄膜磁头的结构中，顶极芯片的厚度LT（母）和顶部磁轭的前边缘表面的位置与空气轴承表面的位置之间的距离LD（母体）被适配 以满足LD> = LT-2.0（mum）（LD> = 0，LT <0）。 在具有这种结构特征的薄膜磁头中，对记录特性有影响的上述厚度LT和距离LD被优化，因此可以防止在记录期间发生侧面擦除。

公开(公告)号：US08144427B2

公开(公告)日：2012-03-27

申请号：US12274470

申请日：2008-11-20

申请人： Yosuke Antoku ,  Takeo Kagami ,  Katsuki Kurihara ,  Taro Oike ,  Masashi Sano

发明人： Yosuke Antoku ,  Takeo Kagami ,  Katsuki Kurihara ,  Taro Oike ,  Masashi Sano

IPC分类号： G11B5/10 ,  G11B5/56

CPC分类号： G11B5/314 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076 ,  G11B2005/0005

摘要： The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.

摘要翻译： 本发明涉及能够有效地检测热凹凸的磁头，磁头组件和磁记录/重放装置。 根据本发明的磁头包括发热电阻器，记录线圈和电阻元件。 发热电阻适用于在供电时产生热量，使得发热导致空气轴承表面的至少一部分热膨胀和突出。 记录线圈适于产生记录磁场，并且电阻元件设置为比记录线圈更靠近空气轴承表面并与加热器串联或并联连接。 因此，电阻元件可以与用于供电的加热器共用公共布线，这消除了布线的浪费并实现了小型化。

公开(公告)号：US07283328B2

公开(公告)日：2007-10-16

申请号：US11113973

申请日：2005-04-26

申请人： Norikazu Ota ,  Kenji Inage ,  Taro Oike

发明人： Norikazu Ota ,  Kenji Inage ,  Taro Oike

IPC分类号： G11B21/02 ,  G11B5/56 ,  G11B5/10

CPC分类号： G11B5/3136 ,  G11B5/314 ,  G11B5/4826 ,  G11B5/6064

摘要： A thin-film magnetic head includes at least one inductive write head element and at least one read magnetic head element, capable of controlling a spacing between a magnetic recording medium and the at least one magnetic read head element by heating. A gain SG (nm/° C.) of the spacing is greater than a spacing gain threshold SGTHLD (nm/° C.) defined by the following expression: SGLIMT=A*dPTP+B A=1.4642E−02*exp(−6.6769E−05*LRDMF) B=4.9602E−01*exp(−2.0423E−03*LRDMF) where dPTP represents an amount of change in protrusion (nm) of a top end of the at least one inductive write head element and/or the at least one read magnetic head element by heating, and LRDMF represents a line recording density (kFCI) at a frequency half of the maximum recording frequency.

摘要翻译： 薄膜磁头包括至少一个感应写头元件和至少一个读磁头元件，能够通过加热来控制磁记录介质和至少一个磁读头元件之间的间隔。 间隔的增益SG（nm /℃）大于由以下表达式定义的间隔增益阈值SG （nm /℃）：<？在线公式描述 =“直线公式”end =“lead”？> SG _{LIMT = A * dPTP + B <？in-line-formula description =“In-line Formulas”end =“tail”？ > A = 1.4642E-02 * exp（-6.6769E-05 * LRD MF）B = 4.9602E-01 * exp（-2.0423E-03 * LRD MF MF ）其中dPTP表示通过加热至少一个感应写入头元件和/或至少一个读磁头元件的顶端的突起（nm）的变化量，并且LRD < 表示在最大记录频率的一半频率处的行记录密度（kFCI）。}

公开(公告)号：US20050254171A1

公开(公告)日：2005-11-17

申请号：US11113973

申请日：2005-04-26

申请人： Norikazu Ota ,  Kenji Inage ,  Taro Oike

发明人： Norikazu Ota ,  Kenji Inage ,  Taro Oike

IPC分类号： G11B5/147 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B5/60 ,  G11B21/21

CPC分类号： G11B5/3136 ,  G11B5/314 ,  G11B5/4826 ,  G11B5/6064

摘要： A thin-film magnetic head includes at least one inductive write head element and at least one read magnetic head element, capable of controlling a spacing between a magnetic recording medium and the at least one magnetic read head element by heating. A gain SG (nm/° C.) of the spacing is greater than a spacing gain threshold SGTHLD (nm/° C.) defined by the following expression: SGLIMT=A*dPTP+B A=1.4642E−02*exp(−6.6769E−05*LRDMF) B=4.9602E−01*exp(−2.0423E−03*LRDMF) where dPTP represents an amount of change in protrusion (nm) of a top end of the at least one inductive write head element and/or the at least one read magnetic head element by heating, and LRDMF represents a line recording density (kFCI) at a frequency half of the maximum recording frequency.

摘要翻译： 薄膜磁头包括至少一个感应写头元件和至少一个读磁头元件，能够通过加热来控制磁记录介质和至少一个磁读头元件之间的间隔。 间隔的增益SG（nm /℃）大于由以下表达式定义的间隔增益阈值SG （nm /℃）：<？在线公式描述 =“直线公式”end =“lead”？> SG _{LIMT = A * dPTP + B <？in-line-formula description =“In-line Formulas”end =“tail”？ > A = 1.4642E-02 * exp（-6.6769E-05 * LRD MF）B = 4.9602E-01 * exp（-2.0423E-03 * LRD MF MF ）其中dPTP表示通过加热至少一个感应写入头元件和/或至少一个读磁头元件的顶端的突起（nm）的变化量，并且LRD < 表示在最大记录频率的一半频率处的行记录密度（kFCI）。}

公开(公告)号：US6146776A

公开(公告)日：2000-11-14

申请号：US72044

申请日：1998-05-05

申请人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Naoyuki Inoue ,  Hitoshi Iwasaki ,  Noriyuki Ito ,  Taro Oike ,  Hiroaki Kawashima

发明人： Hideaki Fukuzawa ,  Yuzo Kamiguchi ,  Naoyuki Inoue ,  Hitoshi Iwasaki ,  Noriyuki Ito ,  Taro Oike ,  Hiroaki Kawashima

IPC分类号： G11B5/012 ,  G11B5/39 ,  H01F10/30 ,  H01L43/08 ,  G11B5/66

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  G11B5/012 ,  Y10S428/90 ,  Y10T428/1129

摘要： A GMR head comprising a spin valve GMR film, which has a free layer containing a Co containing magnetic layer, and a hard magnetic biasing film for inputting a bias magnetic field to the spin valve GMR film. The hard magnetic biasing film is constituted of a film formed by laminating a hard magnetic layer on the magnetic under layer. The hard magnetic layer is disposed adjoining to edge portion of the spin valve GMR film through the magnetic under layer. The magnetic under layer has saturation magnetization Ms.sup.under which satisfies at least one condition of Ms.sup.under .gtoreq.Ms.sup.free and Ms.sup.under .gtoreq.Ms.sup.hard when saturation magnetization of the free layer is Ms.sup.free and saturation magnetization of the hard magnetic layer is Ms.sup.hard. In a MR head of this abutted junction structure, even when the track width is narrowed, occurrence of Barkhausen noise can be effectively suppressed.

摘要翻译： 包括具有包含含钴磁性层的自由层的自旋阀GMR膜的GMR头和用于向偏转阀GMR膜输入偏置磁场的硬磁偏置膜。 硬磁偏置膜由在磁性底层上层叠硬磁性层而形成的膜构成。 硬磁性层通过磁性底层设置在自旋阀GMR膜的边缘部分附近。 当自由层的饱和磁化强度为Msfree且硬磁层的饱和磁化强度为Mshard时，磁性底层具有满足Msunder> / = Msfree和Msunder> / = Mshard的至少一个条件的饱和磁化强度Msunder。 在该对接结结构的MR头中，即使轨道宽度变窄，也能够有效地抑制巴克豪森噪声的发生。