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：US07649713B2

公开(公告)日：2010-01-19

申请号：US11334009

申请日：2006-01-18

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

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

IPC分类号： G11B5/127

CPC分类号： G11B5/3133 ,  G11B5/4826 ,  G11B5/6005 ,  G11B5/6064 ,  G11B2005/0005

摘要： A thin-film magnetic head that has an improved protrusion efficiency under the condition of not only assuring the reliability of the-heating operation, but also stabilizing the read output is provided. The head comprises: a magnetic head element for writing and/or reading data signals; a heating element for generating heat at least during operations of the magnetic head element; and a first heatsink element provided adjacent to the heating element for receiving a part of the heat generated from the heating element, the first heatsink element being a distance from the magnetic head element.

摘要翻译： 提供了在不仅确保加热操作的可靠性而且稳定读取输出的条件下具有改进的突出效率的薄膜磁头。 头部包括：用于写入和/或读取数据信号的磁头元件; 用于至少在磁头元件的操作期间产生热的加热元件; 以及与所述加热元件相邻设置的用于接收从所述加热元件产生的一部分热量的第一散热元件，所述第一散热元件距离所述磁头元件一定距离。

公开(公告)号：US20060291098A1

公开(公告)日：2006-12-28

申请号：US11334009

申请日：2006-01-18

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

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

IPC分类号： G11B5/127 ,  G11B5/41

CPC分类号： G11B5/3133 ,  G11B5/4826 ,  G11B5/6005 ,  G11B5/6064 ,  G11B2005/0005

摘要： A thin-film magnetic head that has an improved protrusion efficiency under the condition of not only assuring the reliability of the-heating operation, but also stabilizing the read output is provided. The head comprises: a magnetic head element for writing and/or reading data signals; a heating element for generating heat at least during operations of the magnetic head element; and a first heatsink element provided adjacent to the heating element for receiving a part of the heat generated from the heating element, the first heatsink element being a distance from the magnetic head element.

摘要翻译： 提供了在不仅确保加热操作的可靠性而且稳定读取输出的条件下具有改进的突出效率的薄膜磁头。 头部包括：用于写入和/或读取数据信号的磁头元件; 用于至少在磁头元件的操作期间产生热的加热元件; 以及与所述加热元件相邻设置的用于接收从所述加热元件产生的一部分热量的第一散热元件，所述第一散热元件距离所述磁头元件一定距离。

公开(公告)号：US20060077591A1

公开(公告)日：2006-04-13

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： G11B5/41

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：US07903370B2

公开(公告)日：2011-03-08

申请号：US11757114

申请日：2007-06-01

申请人： Katsuki Kurihara ,  Hiraku Hirabayashi ,  Norikazu Ota

发明人： Katsuki Kurihara ,  Hiraku Hirabayashi ,  Norikazu Ota

IPC分类号： G11B5/17

CPC分类号： G11B5/3123 ,  G11B5/17 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/3136 ,  G11B5/6064 ,  G11B2005/0002

摘要： A thin-film magnetic head which suppresses the TPTP phenomenon due to the environment temperature is provided. The thin-film magnetic head includes, an electromagnetic coil element having a coil layer and coil-insulating layer, and an overcoat layer. A width of the coil-insulating layer in a track-width direction is larger than a width that is needed to insulate the whole coil layer, and is at least 46 μm, and a length of the coil-insulating layer in a direction perpendicular to the track-width direction is larger than a length that is needed to insulate the whole coil layer, and is at least 75 μm. In addition, a heat expansion coefficient of the coil-insulating layer is larger than or equal to 30×10−6/K, and a Young's modulus of the coil-insulating layer is larger than or equal to 1 GPa and smaller than or equal to 4 GPa.

摘要翻译： 提供了抑制由于环境温度引起的TPTP现象的薄膜磁头。 薄膜磁头包括具有线圈层和线圈绝缘层的电磁线圈元件和外涂层。 线圈绝缘层在轨道宽度方向上的宽度大于使整个线圈层绝缘所需的宽度，并且至少为46μm，线圈绝缘层的垂直方向的长度 轨道宽度方向大于绝缘整个线圈层所需的长度，并且至少为75μm。 此外，线圈绝缘层的热膨胀系数大于或等于30×10-6 / K，线圈绝缘层的杨氏模量大于或等于1GPa且小于或等于 至4 GPa。

公开(公告)号：US20080068749A1

公开(公告)日：2008-03-20

申请号：US11757114

申请日：2007-06-01

申请人： Katsuki Kurihara ,  Hiraku Hirabayashi ,  Norikazu Ota

发明人： Katsuki Kurihara ,  Hiraku Hirabayashi ,  Norikazu Ota

IPC分类号： G11B5/127

CPC分类号： G11B5/3123 ,  G11B5/17 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/3136 ,  G11B5/6064 ,  G11B2005/0002

摘要： A thin-film magnetic head that the TPTP phenomenon due to the environment temperature is surely suppressed without providing a new particular component is provided. The thin-film magnetic head is provided, which includes, an electromagnetic coil element for writing data with a coil layer which generates magnetic field by current flowed in its own and a coil-insulating layer which surrounds the coil layer; and an overcoat layer formed in such a way as to cover the electromagnetic coil element, a width of a track-width direction of the coil-insulating layer being larger than a width that is a minimum width to need to insulate the whole coil layer, and being at least 46 μm, a length of a direction perpendicular to the track-width direction of the coil-insulating layer being larger than a length that is a minimum length to need to insulate the whole coil layer, and being at least 75 μm, a heat expansion coefficient of the coil-insulating layer being larger than or equal to 30×10−6/K, and a Young's modulus of the coil-insulating layer being larger than or equal to 1 GPa and smaller than or equal to 4 GPa.

摘要翻译： 提供了由于环境温度导致的TPTP现象被确定地抑制而不提供新的特定部件的薄膜磁头。 提供了一种薄膜磁头，其包括用于通过自身流过的电流产生磁场的线圈层和围绕线圈层的线圈绝缘层来写入数据的电磁线圈元件; 以覆盖电磁线圈元件的方式形成的覆盖层，线圈绝缘层的轨道宽度方向的宽度大于需要使整个线圈层绝缘的最小宽度的宽度， 并且至少为46μm，与线圈绝缘层的轨道宽度方向垂直的方向的长度大于需要使整个线圈层绝缘的最小长度的长度，并且至少为75μm ，线圈绝缘层的热膨胀系数大于或等于30×10 -6 / K，线圈绝缘层的杨氏模量大于或等于1GPa或更小 大于或等于4 GPa。

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：US20060256472A1

公开(公告)日：2006-11-16

申请号：US11381451

申请日：2006-05-03

申请人： Hiraku HIRABAYASHI ,  Norikazu Ota

发明人： Hiraku HIRABAYASHI ,  Norikazu Ota

IPC分类号： G11B5/147 ,  G11B5/60

CPC分类号： G11B5/3116 ,  G11B5/1872 ,  G11B5/3136 ,  Y10T29/49032

摘要： A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness H1/3side thereof in a range of widthwise ⅓W size positioned at both ends thereof is larger than the average thickness Hm of the whole write shield layer from the air bearing surface up to the rear (H1/3side>Hm), so that the so-called external magnetic field resistance is improved, and inadvertent erasure of the information already recorded in the recording medium is avoided as much as possible. Besides, the PTP (pole tip protrusion) phenomenon arising from the generation of heat from coils, and external temperature changes can be held back.

摘要翻译： 形成薄膜磁头的一部分的写入屏蔽层相对于其宽度方向的全长W设置，其基本上位于与记录介质相对的空气轴承表面上，使得当全长W被三等分时， 位于其两端的宽度方向1 / 3W尺寸的范围内的最大厚度H 1/3边大于整个写入屏蔽层的平均厚度H m 从空气轴承表面直到后部（H 1/3侧 H SUB），从而提高所谓的外部磁场电阻，并且无意中擦除 尽可能地避免已经记录在记录介质中的信息。 此外，可以阻止从线圈产生热量引起的PTP（极尖突起）现象以及外部温度变化。

公开(公告)号：US20090116143A1

公开(公告)日：2009-05-07

申请号：US12348655

申请日：2009-01-05

申请人： Hiraku HIRABAYASHI ,  Norikazu Ota

发明人： Hiraku HIRABAYASHI ,  Norikazu Ota

IPC分类号： G11B5/10

CPC分类号： G11B5/3116 ,  G11B5/1872 ,  G11B5/3136 ,  Y10T29/49032

摘要： A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness H1/3side thereof in a range of widthwise ⅓ W size positioned at both ends thereof is larger than the average thickness Hm of the whole write shield layer from the air bearing surface up to the rear (H1/3side>Hm), so that the so-called external magnetic field resistance is improved, and inadvertent erasure of the information already recorded in the recording medium is avoided as much as possible. Besides, the PTP (pole tip protrusion) phenomenon arising from the generation of heat from coils, and external temperature changes can be held back.

摘要翻译： 形成薄膜磁头的一部分的写入屏蔽层相对于其宽度方向的全长W设置，其基本上位于与记录介质相对的空气轴承表面上，使得当全长W被三等分时， 位于其两端的横向1/3W尺寸的范围内的最大厚度H1 / 3侧大于整个写入屏蔽层从空气支承表面直到后部的平均厚度Hm（H1 / 3side> Hm ），使得所谓的外部磁场电阻提高，并且尽可能地避免已经记录在记录介质中的信息的无意擦除。 此外，可以阻止从线圈产生热量引起的PTP（极尖突起）现象以及外部温度变化。