公开(公告)号：US08588037B2

公开(公告)日：2013-11-19

申请号：US13419394

申请日：2012-03-13

申请人： Yuuichi Yamada ,  Tomoko Taguchi ,  Yoshinobu Fuchizaki

发明人： Yuuichi Yamada ,  Tomoko Taguchi ,  Yoshinobu Fuchizaki

IPC分类号： G11B11/00

CPC分类号： G11B20/10009 ,  G11B5/3133 ,  G11B5/6088 ,  G11B20/10305 ,  G11B20/10509 ,  G11B27/36 ,  G11B2005/0021 ,  G11B2220/2508

摘要： A magnetic disk device of an embodiment includes a magnetic disk, a magnetic head, a laser-beam-intensity control unit, a reproduced-signal detecting unit, and a magnetic-disk evaluating unit. The magnetic head reads a signal recorded in the magnetic disk, or performs magnetic recording while irradiating a laser beam onto the magnetic disk. The laser-beam-intensity control unit controls the intensity of the laser beam. The reproduced-signal detecting unit detects the signal read by the magnetic head. The magnetic-disk evaluating unit evaluates the signal read from the magnetic head, on the basis of a relation between a noise level detected from the signal read by the magnetic head, and the intensity of the laser beam.

摘要翻译： 一个实施例的磁盘装置包括磁盘，磁头，激光束强度控制单元，再现信号检测单元和磁盘评估单元。 磁头读取记录在磁盘中的信号，或者在将激光束照射到磁盘上时进行磁记录。 激光束强度控制单元控制激光束的强度。 再现信号检测单元检测由磁头读取的信号。 磁盘评估单元基于从由磁头读取的信号检测到的噪声电平与激光束的强度之间的关系来评估从磁头读取的信号。

公开(公告)号：US20130176835A1

公开(公告)日：2013-07-11

申请号：US13419394

申请日：2012-03-13

申请人： Yuuichi Yamada ,  Tomoko Taguchi ,  Yoshinobu Fuchizaki

发明人： Yuuichi Yamada ,  Tomoko Taguchi ,  Yoshinobu Fuchizaki

IPC分类号： G11B27/36 ,  G11B13/04

CPC分类号： G11B20/10009 ,  G11B5/3133 ,  G11B5/6088 ,  G11B20/10305 ,  G11B20/10509 ,  G11B27/36 ,  G11B2005/0021 ,  G11B2220/2508

摘要： A magnetic disk device of an embodiment includes a magnetic disk, a magnetic head, a laser-beam-intensity control unit, a reproduced-signal detecting unit, and a magnetic-disk evaluating unit. The magnetic head reads a signal recorded in the magnetic disk, or performs magnetic recording while irradiating a laser beam onto the magnetic disk. The laser-beam-intensity control unit controls the intensity of the laser beam. The reproduced-signal detecting unit detects the signal read by the magnetic head. The magnetic-disk evaluating unit evaluates the signal read from the magnetic head, on the basis of a relation between a noise level detected from the signal read by the magnetic head, and the intensity of the laser beam.

摘要翻译： 一个实施例的磁盘装置包括磁盘，磁头，激光束强度控制单元，再现信号检测单元和磁盘评估单元。 磁头读取记录在磁盘中的信号，或者在将激光束照射到磁盘上时进行磁记录。 激光束强度控制单元控制激光束的强度。 再现信号检测单元检测由磁头读取的信号。 磁盘评估单元基于从由磁头读取的信号检测到的噪声电平与激光束的强度之间的关系来评估从磁头读取的信号。

公开(公告)号：US20120224279A1

公开(公告)日：2012-09-06

申请号：US13472314

申请日：2012-05-15

申请人： Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

发明人： Hiromi Yuasa ,  Tomoko Taguchi ,  Hideaki Fukuzawa

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/3163 ,  G11B2005/0002

摘要： 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.

摘要翻译： 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：US08203804B2

公开(公告)日：2012-06-19

申请号：US13174647

申请日：2011-06-30

申请人： Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

发明人： Tomoko Taguchi ,  Yuichi Yamada ,  Akihiko Takeo

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

摘要： According to one embodiment, a head gimbal assembly includes a magnetic head for perpendicular, a suspension supporting the magnetic head, and a heating module configured to locally heat a recording area of the recording medium. A head section of the magnetic head includes a magnetic core including a main pole and a return pole forming a magnetic circuit in conjunction with the main pole, a coil configured to excite magnetic flux in the magnetic circuit, and a thermal conductor having thermal conductivity higher than thermal conductivity of the recording medium and including a heat absorbing portion configured to remove heat from the recording medium, and a contact portion configured to contact airflow produced, as the recording medium rotates, at a position other than a facing surface of a slider opposed to the recording medium and radiate heat.

摘要翻译： 根据一个实施例，头部万向架组件包括用于垂直的磁头，支撑磁头的悬架以及被配置为局部加热记录介质的记录区域的加热模块。 磁头的头部包括：磁芯，包括主极和形成与主极结合的磁路的返回极;配置成激励磁路中的磁通的线圈，以及导热系数更高的导热体 并且包括被配置为从记录介质移除热量的吸热部分，以及接触部分，其被配置为接触作为记录介质旋转的气流，所述接触部分在与滑块相对的相对表面以外的位置处 到记录介质并辐射热量。

公开(公告)号：US08169741B2

公开(公告)日：2012-05-01

申请号：US11797447

申请日：2007-05-03

申请人： Tomoko Taguchi ,  Tomomi Funayama ,  Yuka Aoyagi ,  Katsuhiko Koui

发明人： Tomoko Taguchi ,  Tomomi Funayama ,  Yuka Aoyagi ,  Katsuhiko Koui

IPC分类号： G11B5/127

CPC分类号： G11B5/3143 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.

摘要翻译： 根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽， 轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。

公开(公告)号：US20090028431A1

公开(公告)日：2009-01-29

申请号：US12055357

申请日：2008-03-26

申请人： Makoto SASAKI ,  Yasuki Yamauchi ,  Masaru Okutsu ,  Tomoko Taguchi ,  Koji Aikawa

发明人： Makoto SASAKI ,  Yasuki Yamauchi ,  Masaru Okutsu ,  Tomoko Taguchi ,  Koji Aikawa

IPC分类号： G06K9/00

CPC分类号： H04N1/62 ,  H04N1/628

摘要： The color adjusting apparatus is provided with: a color signal receiving part that receives input of color signals; a distribution density calculating part that calculates a distribution density in a certain color space concerning the color signals received by the color signal receiving part; an adjustment range setting part that sets an adjustment range where the color signals are adjusted in the color space on the basis of the distribution density calculated by the distribution density calculating part; and a color adjusting part that adjusts the color signals included in the adjustment range set by the adjustment range setting part.

摘要翻译： 颜色调整装置具有：接收颜色信号输入的彩色信号接收部; 分配密度计算部分，计算与由所述颜色信号接收部接收的颜色信号有关的特定颜色空间中的分布密度; 调整范围设定部，其基于由所述分布密度计算部计算出的分布密度，设定在所述颜色空间中调整所述颜色信号的调整范围; 以及颜色调整部，其调整由所述调整范围设定部设定的所述调整范围中包含的颜色信号。

公开(公告)号：US20070097548A1

公开(公告)日：2007-05-03

申请号：US11589724

申请日：2006-10-31

申请人： Tomoko Taguchi

发明人： Tomoko Taguchi

IPC分类号： G11B5/147

CPC分类号： G11B5/1278

摘要： According to one embodiment, a perpendicular magnetic recording apparatus includes a write head including a main pole, a return pole and an exciting coil, and a medium having a soft underlayer and a perpendicular recording layer on a substrate, in which the main pole has a length P in a down-track direction longer than a length T in a cross-track direction at a trailing edge, and has a leading edge recessed from a trailing edge on an air-bearing surface, and in which a gap G between the main pole and the return pole is smaller than twice a distance S between the air-bearing surface of the write head and a surface of the soft underlayer of the medium.

摘要翻译： 根据一个实施例，垂直磁记录装置包括一个包括主极，返回极和励磁线圈的写入头，以及在基底上具有软底层和垂直记录层的介质，其中主极具有 在下行轨道方向上的长度P比后缘处的交叉轨道方向上的长度T长，并且具有从空气轴承表面的后缘凹陷的前缘，并且其中主体 磁极和返回极小于写入头的空气轴承表面和介质的软底层表面之间的距离S的两倍。

公开(公告)号：US20050117242A1

公开(公告)日：2005-06-02

申请号：US10995555

申请日：2004-11-24

申请人： Tomoko Taguchi

发明人： Tomoko Taguchi

IPC分类号： G11B5/31 ,  G11B5/012 ,  G11B5/02 ,  G11B5/127 ,  G11B5/187 ,  G11B21/02

CPC分类号： G11B5/1278 ,  G11B5/6064

摘要： A perpendicular magnetic disk apparatus has a perpendicular two-layered film medium including a soft underlayer and a perpendicular magnetic recording layer, a write head including a main pole, a return yoke and an exciting coil, which produces a perpendicular magnetic field, and a heater located near the main pole.

摘要翻译： 垂直磁盘装置具有包括软底层和垂直磁记录层的垂直双层膜介质，包括产生垂直磁场的主磁极，返回磁轭和励磁线圈的写入头，以及加热器 位于主杆附近。