公开(公告)号：US08605386B1

公开(公告)日：2013-12-10

申请号：US13689097

申请日：2012-11-29

Applicant: Masaya Ohtake ,  Tomoko Taguchi

Inventor： Masaya Ohtake ,  Tomoko Taguchi

IPC: G11B5/31

CPC classification number: G11B5/3116 ,  G11B5/3123

Abstract: According to one embodiment, a magnetic recording head in a magnetic disk drive with a recording medium includes a magnetic core including a plurality of magnetic poles which form a closed magnetic path, and a recording coil wound around a part of the magnetic core and produces a magnetic field to the magnetic core. The magnetic core includes a write gap formed of a nonmagnetic material in a disk-facing surface of the recording head, a magnetic gap portion located at a position off from the disk-facing surface and magnetically isolated, and a nonmagnetic material in the at least one magnetic gap portion. The recording coil is wound around the nonmagnetic material in the magnetic gap portion.

Abstract translation: 根据一个实施例，具有记录介质的磁盘驱动器中的磁记录头包括：磁芯，其包括形成闭合磁路的多个磁极;以及缠绕在磁芯的一部分上的记录线圈， 磁场到磁芯。 磁芯包括由记录头的面向盘的表面中的非磁性材料形成的写入间隙，位于离开盘的表面并且被磁隔离的位置的磁隙部分，以及至少在非磁性材料中的非磁性材料 一个磁隙部分。 记录线圈缠绕在磁隙部分中的非磁性材料上。

公开(公告)号：US08508885B2

公开(公告)日：2013-08-13

申请号：US13218196

申请日：2011-08-25

Applicant: Takuya Matsumoto ,  Tomoko Taguchi ,  Masayuki Takagishi

Inventor： Takuya Matsumoto ,  Tomoko Taguchi ,  Masayuki Takagishi

IPC: G11B5/127 ,  G11B5/187

CPC classification number: G11B5/3146 ,  G11B5/314 ,  G11B2005/0024

Abstract: According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field, a return pole opposed to a trailing side of the main pole across a write gap and configured to return magnetic flux from the main pole, a coil configured to excite magnetic flux in the main pole, a spin-torque oscillator located between respective facing surfaces of the return pole and an end portion of the main pole on the recording-medium side and configured to produce a high-frequency magnetic field, a current source configured to apply current to the spin-torque oscillator through the return and main poles, and a nonmagnetic layer provided in at least one of the poles and extending from a facing surface of the at least one of the poles, which faces the spin-torque oscillator, in a direction across the facing surface.

Abstract translation: 根据一个实施例，磁头包括被配置为施加记录磁场的主极，跨越写入间隙与主极的后侧相对的返回极，并且被配置为从主极返回磁通量，线圈配置 激励主极中的磁通量，位于回转极的相应相对表面和记录介质侧的主极的端部之间的自旋扭矩振荡器，并且被配置为产生高频磁场，电流 源极，被配置为通过返回和主极将电流施加到自旋扭矩振荡器;以及设置在至少一个极上的非磁性层，并且从面对旋转轴的至少一个极的面向表面延伸， 扭矩振荡器在朝向相对表面的方向上。

公开(公告)号：US20130176837A1

公开(公告)日：2013-07-11

申请号：US13419397

申请日：2012-03-13

Applicant: Toshiyuki Ikai ,  Hiroshi Isokawa ,  Masaya Ohtake ,  Tomoko Taguchi

Inventor： Toshiyuki Ikai ,  Hiroshi Isokawa ,  Masaya Ohtake ,  Tomoko Taguchi

IPC: G11B11/00

CPC classification number: G11B5/1278 ,  G11B5/3136 ,  G11B5/314 ,  G11B2005/0021

Abstract: According to one embodiment, there is provided a magnetic recording head which records information on a magnetic recording medium, including an ABS surface, a near-field light generating unit, a heat conducting unit, and a heat absorbing unit. The ABS surface is opposed to the magnetic recording medium. The near-field light generating unit is disposed on the ABS surface. The heat conducting unit is formed by a heat conductor disposed in contact with the near-field light generating unit. The heat absorbing unit is disposed in contact with the heat conducting unit adjacently to the near-field light generating unit in a direction along the ABS surface.

Abstract translation: 根据一个实施例，提供了一种在包括ABS表面，近场光产生单元，导热单元和吸热单元的磁记录介质上记录信息的磁记录头。 ABS表面与磁记录介质相对。 近场光产生单元设置在ABS表面上。 导热单元由与近场光产生单元接触设置的导热体形成。 吸热单元与沿着ABS表面的方向与近场光产生单元相邻地与导热单元接触。

公开(公告)号：US08284518B2

公开(公告)日：2012-10-09

申请号：US13472314

申请日：2012-05-15

Applicant: Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

Inventor： Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

IPC: G11B5/31 ,  G11B5/465

CPC classification number: G11B5/314 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/3163 ,  G11B2005/0002

Abstract: An example magnetic recording head includes a main magnetic pole containing a ferromagnetic layer and a main magnetic pole-magnetization fixing portion containing an anti-ferromagnetic layer in contact with at least one side surface of the main magnetic pole. A heater for the main magnetic pole is configured so as to include an oxide layer with a metal path therein embedded in or provided in the vicinity of the main magnetic pole-magnetization fixing portion and a pair of electrodes, provided in the vicinity of the oxide layer, for flowing a current parallel to a surface of a recording medium through the metal path. A magnetic field generator generates a magnetic field so as to direct a magnetization of the main magnetic pole in one direction.

Abstract translation: 示例性的磁记录头包括含有铁磁层的主磁极和包含与主磁极的至少一个侧表面接触的反铁磁层的主磁极固定部分。 用于主磁极的加热器被构造成包括其中嵌入或设置在主磁极固定部分附近的金属路径的氧化物层和设置在氧化物附近的一对电极 层，用于通过金属路径流动平行于记录介质的表面的电流。 磁场发生器产生磁场，以便在一个方向上引导主磁极的磁化。

公开(公告)号：US08274757B2

公开(公告)日：2012-09-25

申请号：US13224858

申请日：2011-09-02

Applicant: Takuya Matsumoto ,  Tomoko Taguchi ,  Masaya Ohtake

Inventor： Takuya Matsumoto ,  Tomoko Taguchi ,  Masaya Ohtake

IPC: G11B5/31

CPC classification number: G11B5/3123 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/315

Abstract: According to one embodiment, a recording head includes a main pole, a trailing core, a first coil wound around the trailing core, a leading core, and a second coil wound around the leading core. The trailing core includes a return pole opposed to a trailing side of the main pole with a write gap therebetween, and side shields arranged individually on opposite sides of the main pole transversely relative to tracks and magnetically separated from the main pole at a distance not more than double a track pitch of the recording medium. The leading core includes a junction opposed to a leading side of the main pole with a gap therebetween and joined to the side shields with a width of 20 μm or less transversely relative to the tracks and a connecting portion joined to the main pole in a position off the recording medium.

Abstract translation: 根据一个实施例，记录头包括主极，后芯，围绕后芯缠绕的第一线圈，引导芯和缠绕在引导芯上的第二线圈。 牵引芯包括与主极的后侧相对的返回极，其间具有写入间隙，并且侧屏蔽分别相对于轨道横向地布置在主极的相对侧上，并且与主极磁性分离不远 比记录介质的轨道间距翻倍。 引线芯包括与主极的前导面相对的接合部，其间具有间隙，并且相对于轨道横向地与宽度为20μm或更小的侧面屏蔽件接合，并且连接部分连接到主极位置 关闭记录介质。

公开(公告)号：US20120162823A1

公开(公告)日：2012-06-28

申请号：US13250819

申请日：2011-09-30

Applicant: Toshiyuki IKAI ,  Tomoko Taguchi

Inventor： Toshiyuki IKAI ,  Tomoko Taguchi

IPC: G11B5/33 ,  G11B5/60

CPC classification number: G11B5/3146 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0024

Abstract: According to one embodiment, a recording head for perpendicular recording, includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a return pole opposed to the main pole with a write gap therebetween and configured to form a magnetic circuit in conjunction with the main pole, a junction formed of a nonmagnetic body in which soft magnetic bodies are dispersed and configured to physically connect the main and return poles to each other, a coil configured to excite the magnetic flux in the magnetic circuit, a spin-torque oscillator arranged between the return pole and an end portion of the main pole and configured to produce a high-frequency magnetic field, and a current source configured to supply a current to the spin-torque oscillator through the return and main poles.

Abstract translation: 根据一个实施例，用于垂直记录的记录头包括被配置为向记录介质的记录层施加记录磁场的主极，与主极相对的返回极，其间具有写入间隙，并且被配置为形成 与主极结合的磁路，由非磁性体形成的接合部，其中软磁体分散并构造为将主极和返回极彼此物理连接;线圈，其构造成激励磁路中的磁通; 旋转扭矩振荡器，其布置在所述主极和所述主极的端部之间并且被配置为产生高频磁场;以及电流源，被配置为通过所述返回和主极向所述自旋转矩振荡器提供电流 。

公开(公告)号：US08199429B2

公开(公告)日：2012-06-12

申请号：US12076440

申请日：2008-03-18

Applicant: Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

Inventor： Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

IPC: G11B5/31 ,  G11B5/465

CPC classification number: G11B5/314 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/3163 ,  G11B2005/0002

Abstract: A magnetic recording head includes: a main magnetic pole containing a ferromagnetic layer; a main magnetic pole-magnetization fixing portion containing an antiferromagnetic layer in contact with at least one side surface of the main magnetic pole; a heater for heating at least the main magnetic pole so that a magnetic interaction between the main magnetic pole and the main magnetic pole-magnetization fixing portion can be decreased; and a magnetic field generator for generating a magnetic field so as to direct a magnetization of the main magnetic pole in one direction.

Abstract translation: 磁记录头包括：含有铁磁层的主磁极; 主磁极固定部，其包含与所述主磁极的至少一个侧面接触的反铁磁层; 用于加热至少主磁极的加热器，使得能够减小主磁极和主磁极固定部之间的磁相互作用; 以及用于产生磁场以引导主磁极在一个方向上的磁化的磁场发生器。

公开(公告)号：US20070279657A1

公开(公告)日：2007-12-06

申请号：US11641681

申请日：2006-12-20

Applicant: Yasunari Kishimoto ,  Noriko Hasegawa ,  Tomoko Taguchi ,  Kiyoshi Une

Inventor： Yasunari Kishimoto ,  Noriko Hasegawa ,  Tomoko Taguchi ,  Kiyoshi Une

IPC: G03F3/08

CPC classification number: H04N1/603

Abstract: There is provided a color converting device, wherein base data regulates a plurality of color charts regarding a first color value on a first color space and a second color value on a second color space that represent colors of a specified color chart and a color prediction model that estimates and calculates the relation between the first color value and the second color value based on the base data are inputted or designated, and the inputted or designated base data and color prediction model are used and color conversion conditions for converting the first color value to the second color value are generated, the device performing color conversion of inputted image data based on the generated color conversion conditions and provided with a determining unit that determines with calculation processing whether the inputted or designated base data is base data that can generate suitable color conversion conditions when the base data is combined with the inputted or designated color prediction model.

Abstract translation: 提供了一种颜色转换装置，其中基本数据调节关于第一颜色空间上的第一颜色值和表示指定颜色图表和颜色预测模型的颜色的第二颜色空间上的第二颜色值的多个颜色图表 输入或指定基于基本数据来估计和计算第一颜色值和第二颜色值之间的关系，并且使用输入或指定的基础数据和颜色预测模型，以及将第一颜色值转换为 产生第二颜色值，所述设备基于所生成的颜色转换条件对输入的图像数据进行颜色转换，并且具有确定单元，其通过计算处理确定输入的或指定的基本数据是否可以生成适当的颜色转换的基本数据 当基本数据与输入或指定的颜色predi组合时的条件 ction模型。

公开(公告)号：US07239472B2

公开(公告)日：2007-07-03

申请号：US11376594

申请日：2006-03-16

Applicant: Hideo Sado ,  Masahide Yatsu ,  Tomoko Taguchi

Inventor： Hideo Sado ,  Masahide Yatsu ,  Tomoko Taguchi

IPC: G11B5/00 ,  G11B20/20

CPC classification number: G11B20/10 ,  G11B5/59688 ,  G11B20/1258 ,  G11B2220/2516

Abstract: According to one embodiment, there is to provide a data write method which is applied to a disk drive, for recording data on a disk medium by a head mounted on a rotary type actuator. The method carries out a track pitch conversion processing so that a track pitch of data track is set larger than a track pitch in an intermediate circumferential area based on an azimuth angle of the head in the case where the position of the data track is included in an inner circumferential area or outer circumferential area on the disk medium.

Abstract translation: 根据一个实施例，提供一种应用于磁盘驱动器的数据写入方法，用于通过安装在旋转型致动器上的磁头在磁盘介质上记录数据。 该方法执行轨道间距转换处理，使得在包括数据轨道的位置的情况下，基于头部的方位角，将数据轨道的轨道间距设置为大于中间圆周区域中的轨道间距 盘介质上的内圆周区域或外圆周区域。

公开(公告)号：US07170723B2

公开(公告)日：2007-01-30

申请号：US10349211

申请日：2003-01-23

Applicant: Tomoko Taguchi

Inventor： Tomoko Taguchi

IPC: G11B5/33

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/3909 ,  G11B2005/001 ,  G11B2005/0016 ,  G11B2005/0029

Abstract: A magnetic disk apparatus has a magnetic recording medium including a recording layer formed on a nonmagnetic substrate, and a magnetic head including a magnetoresistive film arranged above the magnetic recording medium and a pair of electrodes formed on both surfaces of the magnetoresistive film along a track direction so as to make a sense current flow in a direction perpendicular to a plane of the magnetoresistive film. The recording layer has an easy axis of magnetization in a direction perpendicular to a track width direction, which is a direction of a magnetic field generated by the flow of the sense current, a ratio MA/Me of which recording layer is smaller than 0.6, where MA is a remanent magnetization in the track width direction and Me is a remanent magnetization in the direction of the easy axis of magnetization.

Abstract translation: 磁盘装置具有包括形成在非磁性基板上的记录层的磁记录介质，以及包括布置在磁记录介质上方的磁阻膜的磁头和沿着磁道方向形成在磁阻膜的两个表面上的一对电极 以便在垂直于磁阻膜的平面的方向上形成感测电流。 记录层在垂直于轨道宽度方向的方向上具有容易的磁化轴，该磁道宽度方向是由感测电流的流动产生的磁场的方向，M / A / 其中记录层小于0.6，其中M A A是轨道宽度方向上的残余磁化强度，M e e是剩余磁化强度 易磁化轴的方向。