-
公开(公告)号：US20090161263A1
公开(公告)日：2009-06-25
申请号：US12315523
申请日：2008-12-03
IPC分类号： G11B5/33
CPC分类号： G11B5/3166 , G11B5/1278 , G11B5/3116 , G11B5/315 , G11B5/3169 , Y10T428/1171 , Y10T428/1193
摘要： Embodiments of the present invention provide a magnetic head for perpendicular magnetic recording, and a magnetic disk apparatus capable of preventing data erasure caused by alignment marks. In an embodiment, the magnetic head includes a head element including at least a main pole having a pole face on a flying surface and an auxiliary pole; alignment marks made of a magnetic material and used to detect the amount of lapping work when lapping the pole face of the main pole; and members made of a magnetic material, continuously extending in either direction with respect to the position of the main pole from within the alignment marks outward at least beyond the alignment marks.
摘要翻译： 本发明的实施例提供一种用于垂直磁记录的磁头，以及能够防止由对准标记引起的数据擦除的磁盘装置。 在一个实施例中，磁头包括头元件，头元件至少包括在飞行表面上具有极面的主极和辅助极; 由磁性材料制成的对准标记，用于在研磨主极的极面时检测研磨作业的数量; 以及由磁性材料制成的构件，其在相对于主极的位置的任一方向上从对准标记内部至少超过对准标记向外延伸。
-
公开(公告)号：US08717708B2
公开(公告)日：2014-05-06
申请号：US12315523
申请日：2008-12-03
IPC分类号： G11B5/127
CPC分类号： G11B5/3166 , G11B5/1278 , G11B5/3116 , G11B5/315 , G11B5/3169 , Y10T428/1171 , Y10T428/1193
摘要： Embodiments of the present invention provide a magnetic head for perpendicular magnetic recording, and a magnetic disk apparatus capable of preventing data erasure caused by alignment marks. In an embodiment, the magnetic head includes a head element including at least a main pole having a pole face on a flying surface and an auxiliary pole; alignment marks made of a magnetic material and used to detect the amount of lapping work when lapping the pole face of the main pole; and members made of a magnetic material, continuously extending in either direction with respect to the position of the main pole from within the alignment marks outward at least beyond the alignment marks.
摘要翻译： 本发明的实施例提供一种用于垂直磁记录的磁头，以及能够防止由对准标记引起的数据擦除的磁盘装置。 在一个实施例中，磁头包括头元件，头元件至少包括在飞行表面上具有极面的主极和辅助极; 由磁性材料制成的对准标记，用于在研磨主极的极面时检测研磨作业的数量; 以及由磁性材料制成的构件，其在相对于主极的位置的任一方向上从对准标记内部至少超过对准标记向外延伸。
-
13.发明授权Hard-disk drive and control method for magnetic recording on a patterned medium of the hard-disk drive 有权用于在硬盘驱动器的图案化介质上进行磁记录的硬盘驱动器和控制方法公开(公告)号：US08107180B2
公开(公告)日：2012-01-31
申请号：US12505085
申请日：2009-07-17
CPC分类号： G11B5/09 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B20/10009 , G11B20/10435 , G11B20/1879 , G11B2220/2516 , G11B2220/252
摘要： A hard-disk drive. The hard-disk drive includes a magnetic-recording disk including tracks on which a plurality of patterned bit-cells that are isolated magnetically are aligned at predetermined alignment pitches. The hard-disk drive includes a magnetic-recording head which is configured to follow tracks, and to write and to read data. The hard-disk drive includes a signal-processing unit which is configured to generate a recording signal based on a write-clock signal with cycles corresponding to alignment pitches of patterned bit-cells, and to output a recording signal. The hard-disk drive includes a phase-detecting unit which is configured to detect a phase of the write-clock signal when the magnetic-recording head reaches an end point of a predetermined range. The hard disk drive includes a determination-processing unit which is configured to determine success of data writing based on a difference between an expected value and a detected value of the phase of the write-clock signal.
摘要翻译： 硬盘驱动器。 硬盘驱动器包括磁记录盘，磁盘包括轨道，磁道上分离出多个图案化的位单元，以预定的对准间距排列。 硬盘驱动器包括磁记录头，其被配置为跟随轨道，并且写入和读取数据。 硬盘驱动器包括信号处理单元，其被配置为基于具有对应于图案化位单元的对准间距的周期的写时钟信号产生记录信号，并输出记录信号。 硬盘驱动器包括相位检测单元，其被配置为当磁记录头达到预定范围的终点时检测写时钟信号的相位。 硬盘驱动器包括确定处理单元，其被配置为基于期望值和写入时钟信号的相位的检测值之间的差来确定数据写入的成功。
-
14.发明授权公开(公告)号：US08339749B2
公开(公告)日：2012-12-25
申请号：US12313410
申请日：2008-11-19
CPC分类号： G11B5/3116 , B82Y10/00 , B82Y25/00 , G11B5/1278 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： Embodiments of the invention reduce generation of a magnetic field with a polarity reverse to that of the recording magnetic field, without deteriorating a gradient in the magnetic field. An embodiment of a magnetic disk device according to the present invention suppresses deviation and erase of already recorded data. In an embodiment, the perpendicular magnetic recording head includes the main magnetic pole, an auxiliary magnetic pole, a trailing shield disposed on the trailing side of the main magnetic pole with a non-magnetic film placed in-between, and side shields disposed on both the sides of the main magnetic pole in the direction of the track width with a non-magnetic film placed in-between. The trailing shield has on the trailing side a portion where film thickness is thinner on the trailing side than the thickness of its element in the height direction in its position facing the main magnetic pole. Adoption of this configuration allows suppression of generation of the magnetic field having a polarity reverse to that of the recording magnetic field, without deteriorating the magnetic field gradient. Also in the portion where the side shields face the main magnetic pole, the side shields have the portion where the film is thinned down in thickness.
摘要翻译： 本发明的实施例减少了与记录磁场相反极性的磁场的产生，而不会使磁场中的梯度恶化。 根据本发明的磁盘装置的实施例抑制已经记录的数据的偏差和擦除。 在一个实施例中，垂直磁记录头包括主磁极，辅助磁极，设置在主磁极的后侧的后屏蔽件，其中放置有非磁性薄膜和设置在两者上的侧屏蔽 主磁极的侧面在磁道宽度方向上放置非磁性膜。 后挡板在其后侧具有在其后侧的膜厚度比其元件在其与主磁极相对的位置的高度方向上的厚度更薄的部分。 采用这种配置允许抑制具有与记录磁场相反的极性的磁场的产生，而不会降低磁场梯度。 另外在侧面屏蔽面对主磁极的部分，侧面屏蔽部分的薄膜部分厚度变薄。
-
公开(公告)号：US20090168241A1
公开(公告)日：2009-07-02
申请号：US12315810
申请日：2008-12-04
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： Embodiments of the present invention help to inhibit record information in a perpendicular magnetic recording disk drive from being attenuated or erased due to leakage of a recording magnetic field into the already-recorded information. According to one embodiment, a magnetic disk includes a soft magnetic underlayer and a magnetic recording layer. A magnetic head includes a main magnetic pole, an auxiliary magnetic pole, a trailing shield which is disposed via a non-magnetic film on a trailing side of the main magnetic pole and in which a reverse side is in contact with the auxiliary magnetic pole, and side shields disposed on both sides of the main magnetic pole. Herein, where a saturation magnetic flux density of the soft magnetic underlayer is BsSUL and a film thickness thereof is tSUL; a saturation magnetic flux density of the trailing shield and side shields is Bsshield and a film thickness thereof is tshield; and the number of sides of the trailing shield and the side shields, which sides oppose the main magnetic pole, is C1, conditions are set so as to satisfy the following expression: BsSUL×tSUL>(1/C1)×Bsshield×tshield.
摘要翻译： 本发明的实施例有助于阻止垂直磁记录盘驱动器中的记录信息由于记录磁场泄漏到已经记录的信息而被衰减或擦除。 根据一个实施例，磁盘包括软磁性底层和磁记录层。 磁头包括主磁极，辅助磁极，后屏蔽，其经由主磁极的后侧上的非磁性膜设置，并且反向侧与辅助磁极接触， 以及设置在主磁极两侧的侧屏蔽。 这里，软磁性底层的饱和磁通密度为BsSUL，膜厚为tSUL的情况下， 后屏蔽和侧屏蔽的饱和磁通密度为Bsshield，其膜厚为tshield; 并且后屏蔽和侧屏蔽的与主磁极相对的侧面的数量为C1，条件被设置为满足以下表达式：<？in-line-formula description =“在线公式 “end =”lead“？> BsSxtxtSUL>（1 / C1）xBsshieldxtshield。<？in-line-formula description =”In-line Formulas“end =”tail“？>
-
16.发明申请公开(公告)号：US20090154012A1
公开(公告)日：2009-06-18
申请号：US12313410
申请日：2008-11-19
IPC分类号： G11B5/10
CPC分类号： G11B5/3116 , B82Y10/00 , B82Y25/00 , G11B5/1278 , G11B5/3909 , G11B5/3967 , G11B2005/3996
摘要： Embodiments of the invention reduce generation of a magnetic field with a polarity reverse to that of the recording magnetic field, without deteriorating a gradient in the magnetic field. An embodiment of a magnetic disk device according to the present invention suppresses deviation and erase of already recorded data. In an embodiment, the perpendicular magnetic recording head includes the main magnetic pole, an auxiliary magnetic pole, a trailing shield disposed on the trailing side of the main magnetic pole with a non-magnetic film placed in-between, and side shields disposed on both the sides of the main magnetic pole in the direction of the track width with a non-magnetic film placed in-between. The trailing shield has on the trailing side a portion where film thickness is thinner on the trailing side than the thickness of its element in the height direction in its position facing the main magnetic pole. Adoption of this configuration allows suppression of generation of the magnetic field having a polarity reverse to that of the recording magnetic field, without deteriorating the magnetic field gradient. Also in the portion where the side shields face the main magnetic pole, the side shields have the portion where the film is thinned down in thickness.
摘要翻译： 本发明的实施例减少了与记录磁场相反极性的磁场的产生，而不会使磁场中的梯度恶化。 根据本发明的磁盘装置的实施例抑制已经记录的数据的偏差和擦除。 在一个实施例中，垂直磁记录头包括主磁极，辅助磁极，设置在主磁极的后侧的后屏蔽件，其中放置有非磁性薄膜和设置在两者上的侧屏蔽 主磁极的侧面在磁道宽度方向上放置非磁性膜。 后挡板在其后侧具有在其后侧的膜厚度比其元件在其与主磁极相对的位置的高度方向上的厚度更薄的部分。 采用这种配置允许抑制具有与记录磁场相反的极性的磁场的产生，而不会降低磁场梯度。 另外在侧面屏蔽面对主磁极的部分，侧面屏蔽部分的薄膜部分厚度变薄。
-
17.发明授权Magnetic head having shield layer(s) with low coefficient of thermal expansion and magnetic storage apparatus having same 有权具有低热膨胀系数的屏蔽层的磁头和具有这种磁头的磁存储装置公开(公告)号：US08830635B2
公开(公告)日：2014-09-09
申请号：US11807744
申请日：2007-05-29
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。
-
18.发明申请WRITER HAVING A SHIELD STRUCTURE FOR ADJACENT AND FAR TRACK INTERFERENCE REFRESHMENT 有权具有相似性和远程跟踪干扰重构的屏蔽结构的WRITER公开(公告)号：US20120307394A1
公开(公告)日：2012-12-06
申请号：US13154343
申请日：2011-06-06
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
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。
-
20.发明授权Head-slider with protrusion control structure and manufacturing method of the head-slider with protrusion control structure 有权具有突起控制结构的头部滑块和具有突起控制结构的头部滑块的制造方法公开(公告)号：US08254061B2
公开(公告)日：2012-08-28
申请号：US12616033
申请日：2009-11-10
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 。
-
-
-
-
-
-
-
-
-
搜索结果
126 条记录 (耗时 0.023 秒)
