公开(公告)号：US08363355B2

公开(公告)日：2013-01-29

申请号：US12698834

申请日：2010-02-02

申请人： Masafumi Mochizuki ,  Masukazu Igarashi

发明人： Masafumi Mochizuki ,  Masukazu Igarashi

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/3146 ,  G11B2005/0002 ,  G11B2005/0024

摘要： A magnetic head, according to one embodiment, includes a microwave generator provided with a main magnetic pole, an auxiliary magnetic pole, a coil wound around a magnetic circuit, the magnetic circuit including the main magnetic pole and the auxiliary magnetic pole, and a magnetic film, the film being provided near an ABS side of the main magnetic pole. A first distance in an element thickness direction between film surfaces of the magnetic film and the main magnetic pole at a top end in an element height direction of the microwave generator is greater than a second distance between film surfaces of the magnetic film comprising the microwave generator and the main magnetic pole at the ABS. In other approaches, the main magnetic pole may have a shape which gradually widens from a flare point away from the ABS in an element height direction. Additional systems and methods are also presented.

摘要翻译： 根据一个实施例的磁头包括设置有主磁极，辅助磁极，缠绕在磁路上的线圈的微波发生器，包括主磁极和辅助磁极的磁路和磁性磁头 胶片，该胶片设置在主磁极的ABS侧附近。 在微波发生器的元件高度方向的顶端处的磁性膜和主磁极的膜表面之间的元件厚度方向上的第一距离大于包括微波发生器的磁性膜的膜表面之间的第二距离 和ABS的主磁极。 在其它方法中，主磁极可以具有在元件高度方向上从喇叭口远离ABS逐渐变宽的形状。 还介绍了其他系统和方法。

公开(公告)号：US20100195247A1

公开(公告)日：2010-08-05

申请号：US12698834

申请日：2010-02-02

申请人： Masafumi Mochizuki ,  Masukazu Igarashi

发明人： Masafumi Mochizuki ,  Masukazu Igarashi

IPC分类号： G11B5/127

CPC分类号： G11B5/314 ,  G11B5/3146 ,  G11B2005/0002 ,  G11B2005/0024

摘要： A magnetic head, according to one embodiment, includes a microwave generator provided with a main magnetic pole, an auxiliary magnetic pole, a coil wound around a magnetic circuit, the magnetic circuit including the main magnetic pole and the auxiliary magnetic pole, and a magnetic film, the film being provided near an ABS side of the main magnetic pole. A first distance in an element thickness direction between film surfaces of the magnetic film and the main magnetic pole at a top end in an element height direction of the microwave generator is greater than a second distance between film surfaces of the magnetic film comprising the microwave generator and the main magnetic pole at the ABS. In other approaches, the main magnetic pole may have a shape which gradually widens from a flare point away from the ABS in an element height direction. Additional systems and methods are also presented.

摘要翻译： 根据一个实施例的磁头包括设置有主磁极，辅助磁极，缠绕在磁路上的线圈的微波发生器，包括主磁极和辅助磁极的磁路和磁性磁头 胶片，该胶片设置在主磁极的ABS侧附近。 在微波发生器的元件高度方向的顶端处的磁性膜和主磁极的膜表面之间的元件厚度方向上的第一距离大于包括微波发生器的磁性膜的膜表面之间的第二距离 和ABS的主磁极。 在其它方法中，主磁极可以具有在元件高度方向上从喇叭口远离ABS逐渐变宽的形状。 还介绍了其他系统和方法。

公开(公告)号：US08830635B2

公开(公告)日：2014-09-09

申请号：US11807744

申请日：2007-05-29

申请人： Katsuro Watanabe ,  Katsumi Hoshino ,  Masafumi Mochizuki

发明人： Katsuro Watanabe ,  Katsumi Hoshino ,  Masafumi Mochizuki

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3967

摘要： Embodiments in accordance with the present invention provide a magnetic head of the CPP structure for perpendicular magnetic recording, that is excellent in read performance, and stable in write/read performances by enhancing the external field durability, and further, suppresses deterioration in read sensor property, due to thermal factors. At least either shield layer of a lower magnetic shield layer, and an upper magnetic shield layer, closer to a perpendicular magnetic write head, is made up so as to have a multi-layered structure comprising low thermal expansion nonmagnetic layers, and magnetic layers. Material having a coefficient of thermal expansion smaller than that of a magnetoresistive film is selected as a material for the low thermal expansion nonmagnetic layers of the shield layer.

摘要翻译： 根据本发明的实施例提供了一种用于垂直磁记录的CPP结构的磁头，其读取性能优异，并且通过增强外部场强耐久性而在写入/读取性能方面稳定，并且还抑制读取传感器性能的劣化 ，由于热因素。 下磁屏蔽层的至少一个屏蔽层和更靠近垂直磁写头的上磁屏蔽层被制成具有包括低热膨胀非磁性层和磁性层的多层结构。 选择热膨胀系数小于磁阻膜的材料作为屏蔽层的低热膨胀非磁性层的材料。

公开(公告)号：US20120307394A1

公开(公告)日：2012-12-06

申请号：US13154343

申请日：2011-06-06

申请人： Masafumi Mochizuki ,  Ichiro Yokokawa ,  Satoshi Ohki

发明人： Masafumi Mochizuki ,  Ichiro Yokokawa ,  Satoshi Ohki

IPC分类号： G11B5/02

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

摘要： In one embodiment, a data storage system includes a magnetic head having a main magnetic pole and a wrap around shield positioned around the main magnetic pole at an ABS thereof, a magnetic medium, a drive mechanism for passing the magnetic medium over the magnetic head, and a controlling mechanism electrically coupled to the magnetic head for controlling operation of the magnetic head that initiates rewriting of information of a recording track of the magnetic medium if a recording magnetic field applied to the recording track exceeds a threshold. In another embodiment, a method includes writing data to a first track of a magnetic medium using a magnetic head, determining characteristics consistent with data degradation from tracks adjacent to the first track and far tracks away from the first track using a controlling mechanism, and rewriting data in tracks determined to be degraded due to ATI and/or FTI.

摘要翻译： 在一个实施例中，数据存储系统包括具有主磁极的磁头和围绕主体磁极定位在其ABS处的绕环屏蔽件，磁介质，用于使磁介质穿过磁头的驱动机构， 以及电磁耦合到磁头的控制机构，用于控制磁头的操作，如果施加到记录磁道的记录磁场超过阈值，则启动重写磁介质的记录磁道的信息。 在另一个实施例中，一种方法包括使用磁头将数据写入磁介质的第一轨道，使用控制机构确定与第一轨道相邻的轨道的数据退化与远离第一轨迹的轨迹的特性，以及重写 确定由于ATI和/或FTI而降级的轨道中的数据。

公开(公告)号：US08270111B2

公开(公告)日：2012-09-18

申请号：US11389216

申请日：2006-03-24

申请人： Tomohiro Okada ,  Masafumi Mochizuki ,  Hisashi Kimura ,  Wataru Kimura

发明人： Tomohiro Okada ,  Masafumi Mochizuki ,  Hisashi Kimura ,  Wataru Kimura

IPC分类号： G11B5/147

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

摘要： Embodiments of the invention provide a perpendicular magnetic recording head that causes the difference between a physical track width and an effective track width to be small. Sides of a main pole are made concave with the concave vertex on each side located close to a trailing edge of the main pole.

摘要翻译： 本发明的实施例提供一种使物理轨道宽度和有效轨道宽度之间的差小的垂直磁记录头。 主极的侧面被制成凹面，每个侧面上的凹顶点靠近主极的后缘。

公开(公告)号：US08254061B2

公开(公告)日：2012-08-28

申请号：US12616033

申请日：2009-11-10

申请人： Kenji Kuroki ,  Masafumi Mochizuki ,  Toshiya Shiramatsu

发明人： Kenji Kuroki ,  Masafumi Mochizuki ,  Toshiya Shiramatsu

IPC分类号： G11B5/60

CPC分类号： G11B5/3136 ,  G11B5/1278 ,  G11B5/6005 ,  G11B5/6064

摘要： A head-slider. The head-slider includes a slider and a magnetic-recording head formed on the slider. The magnetic-recording head includes a main pole, a return pole to which a recording magnetic field from the main pole returns, a sensor element, a shield provided between the sensor element and the main pole, and a heater element for adjusting a shape of a flying surface of the magnetic-recording head. The magnetic-recording head further includes a first recess provided at a tip end face of at least one element selected from the group consisting of the return pole and the shield, and a second recess provided on an exposed flying surface and corresponding to the first recess.

摘要翻译： 头滑块。 磁头滑块包括滑块和形成在滑块上的磁记录头。 磁记录头包括主极，来自主极的记录磁场返回的返回极，传感器元件，设置在传感器元件和主极之间的屏蔽件，以及用于调节形状的加热器元件 磁记录头的飞行表面。 磁记录头还包括设置在从由返回极和屏蔽件组成的组中选择的至少一个元件的尖端面处的第一凹部和设置在暴露的飞行表面上并对应于第一凹部的第二凹部 。

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。