公开(公告)号：US08018675B2

公开(公告)日：2011-09-13

申请号：US12043704

申请日：2008-03-06

申请人： Minoru Shinoda ,  Norikazu Ota

发明人： Minoru Shinoda ,  Norikazu Ota

IPC分类号： G11B5/31

CPC分类号： G11B5/3133 ,  G11B5/1278 ,  G11B5/3123 ,  Y10T428/11

摘要： The thin-film magnetic head in accordance with the present invention comprises a magnetic pole, a coil surrounding the magnetic pole, and an insulating layer covering the coil, while the insulating layer is formed from a resin containing a carbon nanotube. Preferably, the resin contains 0.05 to 5 wt % of the carbon nanotube. Preferably, the resin contains a cyclodextrin.

摘要翻译： 根据本发明的薄膜磁头包括磁极，围绕磁极的线圈以及覆盖线圈的绝缘层，而绝缘层由含有碳纳米管的树脂形成。 优选地，所述树脂含有0.05〜5重量％的碳纳米管。 优选地，树脂含有环糊精。

公开(公告)号：US07623322B2

公开(公告)日：2009-11-24

申请号：US11128192

申请日：2005-05-13

申请人： Tsuyoshi Umehara ,  Norikazu Ota ,  Katsumichi Tagami ,  Hiroki Matsukuma ,  Nobuya Oyama ,  Soji Koide ,  Yoshiyuki Mizoguchi ,  Kazuhide Yamada

发明人： Tsuyoshi Umehara ,  Norikazu Ota ,  Katsumichi Tagami ,  Hiroki Matsukuma ,  Nobuya Oyama ,  Soji Koide ,  Yoshiyuki Mizoguchi ,  Kazuhide Yamada

IPC分类号： G11B5/39 ,  G11B5/31 ,  G11B5/115 ,  G11B5/56 ,  G11B5/54

CPC分类号： G11B5/6064 ,  G11B5/3133

摘要： The present invention relates to a thin-film magnetic head with a heater. A thin-film magnetic head includes a substrate, a magnetic read head element that has a shield area and is formed on the substrate, a magnetic write head element that has a pole area and is formed on the opposite side of the substrate with respect to the magnetic read head element, an overcoat layer that covers the magnetic read head element and the magnetic write head element and is formed on the substrate, a heater that heats at least during the magnetic read head element or the magnetic write head element in operation and is formed in the overcoat layer, and a slit area that splits the shield area in a shield length direction and is made of lower thermal conductivity material than the one of the shield area.

摘要翻译： 本发明涉及具有加热器的薄膜磁头。 薄膜磁头包括基板，具有屏蔽区域并形成在基板上的磁读头元件，具有磁极区域的磁写头元件，并相对于基板形成在基板的相对侧上 磁读头元件，覆盖磁读头元件和磁写头元件并形成在基片上的外涂层，至少在磁读头元件或写磁头元件工作期间加热的加热器，以及 形成在外涂层中，以及狭缝区域，其在屏蔽长度方向上分割屏蔽区域，并且由比该屏蔽区域中的一个更低的导热性材料制成。

公开(公告)号：US07612965B2

公开(公告)日：2009-11-03

申请号：US11214725

申请日：2005-08-31

申请人： Katsuki Kurihara ,  Taro Oike ,  Hiraku Hirabayashi ,  Norikazu Ota

发明人： Katsuki Kurihara ,  Taro Oike ,  Hiraku Hirabayashi ,  Norikazu Ota

IPC分类号： G11B5/31 ,  G11B5/39

CPC分类号： G11B5/3136 ,  G11B5/3106 ,  G11B5/314 ,  G11B5/6064 ,  G11B5/607

摘要： A thin-film magnetic head with a higher protrusion efficiency is provided, which comprises: a substrate with an air bearing surface (ABS); a read head element including a lower and upper shield layers, and a write head element including a magnetic pole layer; a heating element provided in a position opposite to the ABS in relation to the read and write head elements; and a heatsink element including a heatsink layer provided adjacent to an end opposite to an end in the ABS side of at least one layer of the lower and upper shield layers and the magnetic pole layer, the heatsink element having a shape that a pattern width in the track-width direction of an end portion in the ABS side is larger than a pattern width in the track-width direction of an end portion opposite to the end portion in the ABS side.

摘要翻译： 提供了具有更高突出效率的薄膜磁头，其包括：具有空气轴承表面（ABS）的基板; 包括下屏蔽层和上屏蔽层的读头元件和包括磁极层的写头元件; 相对于读写头元件设置在与ABS相反的位置的加热元件; 以及散热元件，其包括与所述下屏蔽层和上屏蔽层的至少一层的ABS侧中的端部相对的端部邻近设置的散热层，所述散热元件具有形状为 ABS侧的端部的轨道宽度方向大于与ABS侧的端部相反的端部的轨道宽度方向的图案宽度。

公开(公告)号：US07583479B2

公开(公告)日：2009-09-01

申请号：US11128305

申请日：2005-05-13

申请人： Tsuyoshi Umehara ,  Norikazu Ota ,  Katsumichi Tagami ,  Hiroki Matsukuma ,  Nobuya Oyama ,  Soji Koide ,  Yoshiyuki Mizoguchi ,  Kazuhide Yamada

发明人： Tsuyoshi Umehara ,  Norikazu Ota ,  Katsumichi Tagami ,  Hiroki Matsukuma ,  Nobuya Oyama ,  Soji Koide ,  Yoshiyuki Mizoguchi ,  Kazuhide Yamada

IPC分类号： G11B5/33 ,  G11B5/127 ,  G11B5/147

CPC分类号： G11B5/581 ,  G11B5/3106 ,  G11B5/3136 ,  G11B5/314 ,  G11B5/6064

摘要： A thin-film magnetic head according to the present invention comprises: a substrate; at least one magnetic head element formed on the substrate; an overcoat multilayer composed of a plurality of overcoat layers, formed on the substrate so as to cover the at least one magnetic head element; and at least one heating element to be heated at least during operation of the at least one magnetic head element, the at least one heating element provided in the overcoat multilayer, and a coefficient of thermal expansion of an overcoat layer located farthest from the substrate in the overcoat multilayer being smaller than a coefficient of thermal expansion of an overcoat layer located closest to the substrate in the overcoat multilayer.

摘要翻译： 根据本发明的薄膜磁头包括：基板; 形成在所述基板上的至少一个磁头元件; 形成在所述基板上以覆盖所述至少一个磁头元件的由多个外涂层构成的外涂层多层; 以及至少一个加热元件，至少在至少一个磁头元件的操作期间被加热，所述至少一个加热元件设置在外涂层多层中，以及位于最远离基底的外涂层的热膨胀系数 外涂层多层比在外涂层多层中最靠近基底的外涂层的热膨胀系数小。

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：US20070103814A1

公开(公告)日：2007-05-10

申请号：US11645505

申请日：2006-12-27

申请人： Noboru Yamanaka ,  Norikazu Ota

发明人： Noboru Yamanaka ,  Norikazu Ota

IPC分类号： G11B5/00

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/10 ,  G11B5/105 ,  G11B5/11 ,  G11B5/3103 ,  G11B5/3967 ,  G11B5/40 ,  G11B5/4886 ,  G11B2005/3996

摘要： A thin-film magnetic head comprises at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing, and a heating element provided in the head body part. The heating element has an up portion meandering between an origin and a halfway point and a down portion meandering along the up portion from the halfway point to an end positioned in the vicinity of the origin, and adapted to generate heat when energized.

摘要翻译： 薄膜磁头包括用于读取的磁阻装置和用于书写的电磁换能器装置中的至少一个以及设置在头本体部分中的加热元件中的至少一个。 加热元件具有在原点和中间点之间曲折的向上部分，以及沿着从中途点到位于原点附近的端部的向上部分曲折的向下部分，并且适于在通电时产生热量。

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：US20050099735A1

公开(公告)日：2005-05-12

申请号：US10995490

申请日：2004-11-24

申请人： Norikazu Ota ,  Takeshi Wada ,  Takashi Honda

发明人： Norikazu Ota ,  Takeshi Wada ,  Takashi Honda

IPC分类号： G11B5/55 ,  G11B5/60 ,  G11B21/10 ,  G11B21/21 ,  G11B5/56

CPC分类号： G11B21/106 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/6082 ,  G11B21/21

摘要： A precise positioning actuator to be fixed to a head slider provided with at least one head element, for precisely positioning the at least one head element includes a base, and a pair of movable arms extending from the base and having slider fixing portions to be fixed to side surfaces of the head slider at top end sections thereof. Each of the pair of movable arms includes an arm member and an actuator layer formed on a side surface of the arm member, for displacing the arm member in response to a drive signal applied thereto. The actuator layer is terminated on the side surface of the arm member at a frontward position form the slider fixing portion.

摘要翻译： 固定到头部滑块的精确定位致动器，其设置有至少一个头部元件，用于精确地定位至少一个头部元件，包括底座和从基座延伸并具有滑块固定部分以固定的一对可动臂 到头部滑动器的顶端部分的侧表面。 一对可动臂中的每一个包括臂构件和形成在臂构件的侧表面上的致动器层，用于响应于施加到臂构件的驱动信号而使臂构件移位。 致动器层在从滑块固定部分的前方位置处终止在臂构件的侧表面上。

公开(公告)号：US06690547B2

公开(公告)日：2004-02-10

申请号：US10060409

申请日：2002-02-01

申请人： Takeshi Wada ,  Norikazu Ota ,  Takashi Honda ,  Masashi Shiraishi

发明人： Takeshi Wada ,  Norikazu Ota ,  Takashi Honda ,  Masashi Shiraishi

IPC分类号： G11B560

CPC分类号： G11B5/486

摘要： An HGA includes a magnetic head slider with at least one thin-film magnetic head element, a resilient flexure made of a stainless steel, supporting the magnetic head slider, a load beam made of a stainless steel, supporting the flexure, for applying a predetermined load to the magnetic head slider, a drive IC chip with a circuit for the at least one thin-film magnetic head element, a lead conductor member on which the drive IC chip is mounted, and a high-thermal-conductivity member made of a material with a higher thermal conductivity than that of the stainless steel and inserted between the lead conductor member and the load beam in a region containing at least a section on which the drive IC chip is mounted.

摘要翻译： HGA包括具有至少一个薄膜磁头元件的磁头滑动器，由不锈钢制成的弹性挠曲件，支撑磁头滑动器，由不锈钢制成的负载梁，支撑挠曲件，用于施加预定的 负载到磁头滑动器，具有用于至少一个薄膜磁头元件的电路的驱动IC芯片，安装有驱动IC芯片的引线导体部件和由 具有比不锈钢高的导热性的材料，并且在至少包含安装有驱动IC芯片的部分的区域中插入引线导体部件和负载梁之间。

公开(公告)号：US20110304939A1

公开(公告)日：2011-12-15

申请号：US12801540

申请日：2010-06-14

申请人： Kei Hirata ,  Norikazu Ota ,  Noboru Yamanaka

发明人： Kei Hirata ,  Norikazu Ota ,  Noboru Yamanaka

IPC分类号： G11B5/127 ,  G11B5/82

CPC分类号： G11B5/1278 ,  B82Y10/00 ,  G11B5/743

摘要： This magnetic recording device is provided with a magnetic write head having a magnetic pole, and a magnetic recording medium having a plurality of data recording blocks. Each of the data recording blocks is formed with a plurality of write tracks and separated, in a write track width direction, from neighboring one of the data recording blocks with a writing exudation suppression section in between. With this configuration, a magnetic mutual interference of the adjacent data recording blocks at the time of a data rewriting process is avoided even when a mutual interval of the data recording blocks is narrowed, and a good recording state is maintained in each of the data recording blocks. Therefore, it is possible to achieve an improvement in a recording density, while realizing the good and brief data rewriting process for each of the data recording blocks.

摘要翻译： 该磁记录装置设置有具有磁极的磁写头和具有多个数据记录块的磁记录介质。 每个数据记录块由多个写入磁道形成，并且在写入磁道宽度方向上与相邻的数据记录块之间具有写入渗出抑制部分。 利用这种配置，即使当数据记录块的相互间隔变窄时也避免了在数据重写处理时相邻的数据记录块的磁互相干扰，并且在每个数据记录中保持良好的记录状态 块。 因此，可以实现对每个数据记录块的良好且简短的数据重写处理的记录密度的提高。