公开(公告)号：US20100128382A1

公开(公告)日：2010-05-27

申请号：US12622064

申请日：2009-11-19

申请人： Hideaki Maeda ,  Hiroyasu Tanabe ,  Masafumi Mochizuki ,  Hideki Zaitsu

发明人： Hideaki Maeda ,  Hiroyasu Tanabe ,  Masafumi Mochizuki ,  Hideki Zaitsu

IPC分类号： G11B21/02

CPC分类号： G11B19/02 ,  G11B5/012 ,  G11B2005/001 ,  G11B2005/0021

摘要： A magnetic recording device according to one embodiment includes a magnetic recording medium having a magnetic recording layer; a recording element positioned on a head slider; an assistance element for supplying assistance energy to an area on the recording layer to which a recording magnetic field generated by the recording element is applied, the assistance element being positioned on the head slider; and a controller for controlling a size of an assistance area from the assistance element in accordance with a position of the head slider in a radial direction of the magnetic recording medium. Additional systems and methods are also presented.

摘要翻译： 根据一个实施例的磁记录装置包括具有磁记录层的磁记录介质; 定位在磁头滑块上的记录元件; 辅助元件，用于向施加有由记录元件产生的记录磁场的记录层上的区域提供辅助能量，辅助元件位于磁头滑块上; 以及控制器，用于根据磁头滑块在磁记录介质的径向方向上的位置来从辅助元件控制辅助区域的尺寸。 还介绍了其他系统和方法。

公开(公告)号：US20100128376A1

公开(公告)日：2010-05-27

申请号：US12615219

申请日：2009-11-09

申请人： Hiroyasu Tanabe ,  Hideaki Maeda ,  Hideki Zaitsu ,  Masafumi Mochizuki

发明人： Hiroyasu Tanabe ,  Hideaki Maeda ,  Hideki Zaitsu ,  Masafumi Mochizuki

IPC分类号： G11B27/36

CPC分类号： G11B5/012 ,  G11B5/09 ,  G11B5/455 ,  G11B2005/0005 ,  G11B2005/0021

摘要： In one embodiment, a magnetic disk drive includes a magnetic disk, a head slider for flying above the spinning magnetic disk, a pattern analyzer for analyzing a data pattern of data to be recorded on the magnetic disk to determine a recording current reversal timing and a recording assistance area in accordance with the analysis so that the rear end of the determined recording assistance area is shifted forward if the determined recording current reversal timing is earlier than a criterion, or the rear end of the determined recording assistance area is shifted backward if the determined recording current reversal timing is later than the criterion, a recording assistance element on the slider for forming the determined recording assistance area on the magnetic disk, and a recording element for recording the data on the magnetic disk using the recording current in accordance with the determined recording current reversal timing.

摘要翻译： 在一个实施例中，磁盘驱动器包括磁盘，用于在旋转磁盘上方飞行的磁头滑块，用于分析要记录在磁盘上的数据的数据模式以确定记录电流反转定时的模式分析器，以及 记录辅助区域，如果所确定的记录电流反转定时早于标准，则确定的记录辅助区域的后端向前移动，或者如果确定的记录辅助区域的后端如果 确定的记录电流反转时间晚于该标准，用于在磁盘上形成确定的记录辅助区域的滑块上的记录辅助元件，以及用于使用记录电流将数据记录在磁盘上的记录元件 确定记录电流反转时序。

公开(公告)号：US07715152B2

公开(公告)日：2010-05-11

申请号：US11012990

申请日：2004-12-14

申请人： Tomohiro Okada ,  Isao Nunokawa ,  Masafumi Mochizuki

发明人： Tomohiro Okada ,  Isao Nunokawa ,  Masafumi Mochizuki

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

CPC分类号： G11B5/315 ,  G11B5/11 ,  G11B5/112 ,  G11B5/1278

摘要： Embodiments of the invention provide a perpendicular magnetic writing head with a suppressed effective track width to be written on a magnetic medium while increasing writing magnetic field gradient. In one embodiment a trailing side shield is disposed by way of a gap film to a main pole of a perpendicular writing magnetic head. A gap distance (Gt) on a trailing side of the main pole and a gap distance (Gs) on a lateral side of the main pole is defined as Gt

摘要翻译： 本发明的实施例提供一种具有抑制的有效磁道宽度的垂直写磁头，以便在增加磁场梯度的同时写入磁介质。 在一个实施例中，后侧屏蔽件通过间隙膜设置到垂直写入磁头的主极。 主极后侧的间隙距离（Gt）和主极侧面的间隙距离（Gs）定义为Gt

公开(公告)号：US07639452B2

公开(公告)日：2009-12-29

申请号：US11370504

申请日：2006-03-07

申请人： Masafumi Mochizuki ,  Isao Nunokawa

发明人： Masafumi Mochizuki ,  Isao Nunokawa

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3163 ,  Y10T29/49032

摘要： Embodiments of the invention provide an easy-to-fabricate magnetic head which can generate a high magnetic field without eliminating adjacent tracks even if a skew angle is created. In one embodiment, a structure which comprises a pole tip of main pole exposed on the air bearing surface, a part which is recessed from the air bearing surface and having a tapered face at leading side against the air bearing surface, and a magnetic material connected thereto is adopted for the main pole.

摘要翻译： 本发明的实施例提供了一种易于制造的磁头，即使产生偏斜角，也可以产生高磁场而不消除相邻轨迹。 在一个实施例中，包括暴露在空气轴承表面上的主极极极端部的结构，从空气轴承表面凹陷并且在前侧抵靠空气轴承表面具有锥形面的部分，以及连接有磁性材料的磁性材料 主杆采用。

公开(公告)号：US20090313811A1

公开(公告)日：2009-12-24

申请号：US12487306

申请日：2009-06-18

申请人： Toshio Takahashi ,  Akihiro Nanba ,  Masafumi Mochizuki

发明人： Toshio Takahashi ,  Akihiro Nanba ,  Masafumi Mochizuki

IPC分类号： H04R31/00

CPC分类号： G11B5/1278 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3173 ,  G11B5/3967 ,  Y10T29/49036 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/4906

摘要： In a manufacturing process of a head slider according to one embodiment, a flare point height of a main pole is estimated according to the following procedure. Magnetic field intensity is measured by a sensor, and a maximum point of the magnetic field is assumed as a center of the main pole. The measurement is moved from the center point along a Z direction, such that a measurement value corresponds to a reference value. An attenuation rate (a gradient) of a measurement value of magnetic field intensity to displacement in the Z direction of the measurement point is calculated and normalized with the measurement value, and plotted with respect to the measurement value itself. The gradient is compared to a gradient in a database of samples being separately prepared, each sample having known flare point height, allowing an estimation of the flare point height of the said sample from the comparison.

摘要翻译： 在根据一个实施例的磁头滑块的制造过程中，根据以下过程来估计主极的耀斑高度。 磁场强度由传感器测量，磁场的最大点被认为是主极的中心。 测量从中心点沿Z方向移动，使得测量值对应于参考值。 计算测量点的Z方向的磁场强度测量值与位移的衰减率（梯度），并用测量值对其进行归一化，并相对于测量值本身绘制。 将梯度与分别制备的样品的数据库中的梯度进行比较，每个样品具有已知的光斑高度，允许从比较中估计所述样品的耀斑高度。

公开(公告)号：US07545595B2

公开(公告)日：2009-06-09

申请号：US11354912

申请日：2006-02-16

申请人： Takehiko Hamaguchi ,  Atsushi Nakamura ,  Yasutaka Nishida ,  Masafumi Mochizuki ,  Hideki Sawaguchi

发明人： Takehiko Hamaguchi ,  Atsushi Nakamura ,  Yasutaka Nishida ,  Masafumi Mochizuki ,  Hideki Sawaguchi

IPC分类号： G11B5/02

CPC分类号： G11B5/6005 ,  G11B5/012 ,  G11B5/105 ,  G11B5/127 ,  G11B5/1272 ,  G11B5/2654 ,  G11B5/4886 ,  G11B5/56 ,  G11B2005/001 ,  G11B2005/0021

摘要： A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally heat the disk; a write element in the head to apply a magnetic field to the disk; and means for selecting at least one heat element from the plural heat elements, wherein the means for selecting the heat element selects at least one heat element from the plural heat elements so as to bring a center line of an area heated by the heat element and a center line of the position of the magnetic field generated by the write element into approximate correspondence, in correspondence with a relative angle between the head and a direction of movement of the disk.

摘要翻译： 一种磁盘装置，包括：磁盘，其将数据作为磁性信息保存在磁记录膜上; 执行写入和读取磁信息的头部; 旋转致动器，用于沿着盘的径向方向移动头部; 头部中的多个热元件以局部加热盘; 磁头中的一个写元件将磁场施加到磁盘上; 以及用于从所述多个加热元件中选择至少一个加热元件的装置，其中用于选择所述加热元件的装置从所述多个加热元件中选择至少一个加热元件，以使得由所述加热元件加热的区域的中心线，以及 由写入元件产生的磁场的位置的中心线对应于磁头与磁盘的移动方向之间的相对角度相对应。

公开(公告)号：US07542244B2

公开(公告)日：2009-06-02

申请号：US11252866

申请日：2005-10-17

申请人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Tomohiro Okada

发明人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Tomohiro Okada

IPC分类号： G11B5/127

CPC分类号： G11B5/1278

摘要： Embodiments of the invention provide a magnetic head (magnetic disk storage) which does not erase data on a recording medium even when a stray field is applied. In one embodiment, the head has a structure that d1

摘要翻译： 本发明的实施例提供一种磁头（磁盘存储），即使在施加杂散场时也不会在记录介质上擦除数据。 在一个实施例中，头部具有d1 =

公开(公告)号：US07475470B2

公开(公告)日：2009-01-13

申请号：US10774370

申请日：2004-02-10

申请人： Masafumi Mochizuki ,  Tomohiro Okada ,  Atsushi Nakamura

发明人： Masafumi Mochizuki ,  Tomohiro Okada ,  Atsushi Nakamura

IPC分类号： G11B5/187

CPC分类号： G11B5/1278 ,  G11B5/1872 ,  G11B5/3967 ,  G11B5/4886 ,  G11B2005/0029 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： On the trailing side of a main pole air bearing surface of a magnetic head for perpendicular recording, the central portion is formed closer to the leading side than the corners on the trailing side, such that the main pole air bearing surface is formed in the shape of a recess with respect to the tailing side. As a result, it is possible to linearize the magnetic field distribution on the trailing side whereby the magnetic reversal is determined, and to record a bit without curving the shape of magnetic reversal.

摘要翻译： 在用于垂直记录的磁头的主极空气轴承表面的后侧，中心部形成为比在后侧的角部更靠近前侧，使得主极空气轴承表面形成为 相对于尾部的凹部。 结果，可以线性化后侧的磁场分布，由此确定磁反转，并且记录位而不会使磁反转的形状弯曲。

公开(公告)号：US07426092B2

公开(公告)日：2008-09-16

申请号：US11173730

申请日：2005-06-30

申请人： Hiroshi Fukui ,  Masafumi Mochizuki ,  Kaori Suzuki

发明人： Hiroshi Fukui ,  Masafumi Mochizuki ,  Kaori Suzuki

IPC分类号： G11B5/127

CPC分类号： G11B5/127

摘要： Embodiments of the invention provide a magnetic head which prevents data on a recording medium from being erased even when a stray field is applied. In one embodiment, an auxiliary pole is sandwiched between a stray-field shield composed of a magnetic layer recessed from the air bearing surface and a main pole. The stray-field shield may be formed on the leading side of the auxiliary pole. A face of the stray-field shield on a medium side may be recessed from an air-bearing-surface of the magnetic head.

摘要翻译： 本发明的实施例提供一种磁头，即使当施加杂散场时也防止记录介质上的数据被擦除。 在一个实施例中，辅助极被夹在由空气支承表面凹入的磁性层和主极之间的杂散场屏蔽之间。 杂散场屏蔽可以形成在辅助极的前导侧。 介质侧的杂散屏蔽层的表面可以从磁头的空气轴承表面凹入。

公开(公告)号：US20070217066A1

公开(公告)日：2007-09-20

申请号：US11802297

申请日：2007-05-22

申请人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

发明人： Yoshiaki Kawato ,  Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Yasuyuki Okada ,  Masafumi Mochizuki

IPC分类号： G11B5/127

CPC分类号： G11B5/3906 ,  G11B5/1278

摘要： Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe (oersted), while also modified to suppress remanent magnetic fields occurring immediately after writing operation. In a perpendicular magnetic head comprising a main pole, a return path for supplying a magnetic flux to that main pole, and an conductive coil for excitation of the main pole and return path, the main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer, the low saturation flux density layer has a thickness within 0.5 to 5 nanometers, the high saturation flux density layer has a thickness from 10 to 50 nanometers for suppressing remanent magnetization and preventing erasing after writing by utilizing a closed magnetic domain structure in the pole.

摘要翻译： 具有超过100吉比特/平方英寸的高记录密度的窄主极的薄膜垂直磁头，并产生超过10kOe（奥斯特）的高磁记录场，同时还被修改以抑制写入后立即发生的残留磁场 操作。 在包括主极，用于向该主极提供磁通的返回路径和用于激励主极返回路径的导电线圈的垂直磁头中，主极的极宽为200纳米以下， 以及由高饱和磁通密度层和低饱和磁通密度层组成的磁性层，低饱和磁通密度层的厚度在0.5〜5纳米之间，高饱和磁通密度层的厚度为10〜50纳米， 通过利用极中的闭合磁畴结构来抑制剩磁，并防止写入后的擦除。