公开(公告)号：US20080180839A1

公开(公告)日：2008-07-31

申请号：US12008276

申请日：2008-01-09

申请人： Masafumi Mochizuki ,  Yukiya Shimizu ,  Shuji Nishida

发明人： Masafumi Mochizuki ,  Yukiya Shimizu ,  Shuji Nishida

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： In a patterned perpendicular magnetic recording medium, embodiments of the present invention provide a magnetic head in which magnetic field to be applied to adjacent tracks can be suppressed and a recording device equipped with the magnetic head. In one embodiment of the present invention, a sum of a width Pw of a main pole of a magnetic head and distances between right and left magnetic substances on a width-directional side of tracks and the main pole, so-called widths of side gap lengths s_g1—1 and s_g1—2 is, in a magnetic recording medium having a soft-magnetic underlayer, made to be not more than a sum of a width w_land of a convexity or land of the soft-magnetic underlayer and widths w_groove—1 and w_groove—2 of concavities or grooves adjacent to the land on both its sides.

摘要翻译： 在图案化的垂直磁记录介质中，本发明的实施例提供了一种可以抑制施加到相邻轨道的磁场的磁头和配备有磁头的记录装置。 在本发明的一个实施例中，磁头的主极的宽度Pw与轨道的宽度方向上的左右磁性物质与主极之间的距离之和，所谓的侧面间隙的宽度 在具有软磁性底层的磁记录介质中，长度s_g 1 _{1和s_g 1 <2>被设定为不大于宽度w_land之和的长度 的软磁性底层的凸面或平面以及与其两侧相邻的凹槽或凹槽的宽度w_沟槽-1和w_沟槽2。}

公开(公告)号：US20070253107A1

公开(公告)日：2007-11-01

申请号：US11796196

申请日：2007-04-27

申请人： Masafumi Mochizuki ,  Shuji Nishida ,  Kimitoshi Etoh ,  Isao Nunokawa

发明人： Masafumi Mochizuki ,  Shuji Nishida ,  Kimitoshi Etoh ,  Isao Nunokawa

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315

摘要： Embodiments in accordance with the present invention provide a perpendicular recording magnetic head whose dimensional dependency on the nonuniformity of magnetic field strength and distribution during manufacture is minimized, with narrowed tracks and without attenuation or erasure of adjacent track data while maintaining high magnetic field strength. According to one embodiment, a magnetic material (trailing/side shield) for creating a steep gradient of magnetic field strength is provided at a trailing side of a pole tip of a main magnetic pole piece and in a direction of the track width. The magnetic head is formed so that a gap (side gap length “gl”) between a side shield and a throat height portion of the pole tip progressively decreases with an increasing distance from an air-bearing surface, in a direction of an element height. That is, side gap length “gl” (2) at an element height position P2 is made smaller than side gap length “gl” (1) at an air-bearing surface position P1 so as to satisfy a relationship of gl(1)>gl(2).

摘要翻译： 根据本发明的实施例提供一种垂直记录磁头，其在制造期间对磁场强度和分布的不均匀性的尺寸依赖性被最小化，具有变窄的轨迹，并且在保持高磁场强度的同时没有相邻轨道数据的衰减或擦除。 根据一个实施例，用于产生陡峭磁场强度梯度的磁性材料（尾部/侧面屏蔽）设置在主磁极片的磁极尖端的后侧和磁道宽度的方向上。 磁头形成为使得侧挡板和极尖端的喉部高度部分之间的间隙（侧隙长度“gl”）随着与空气轴承表面的距离的增加而逐渐减小，元件高度方向 。 也就是说，使元件高度位置P 2处的侧面间隙长度“gl”（2）在空气轴承表面位置P 1处小于侧面间隙长度“gl”（1），以满足gl（ 1）> gl（2）。

公开(公告)号：US20070211382A1

公开(公告)日：2007-09-13

申请号：US11707415

申请日：2007-02-15

申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Youji Maruyama ,  Hiroshi Fukui

发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Youji Maruyama ,  Hiroshi Fukui

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1872 ,  G11B5/3146

摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the write-field distribution in the track-width direction can be decreased without reducing the write-field intensity. A main pole includes a pole tip having a part which provides the write track-width and a yoke part recessed from the air bearing surface in the element height direction, the pole tip including at least two magnetic films having different track-width directions, and the throat height at the trailing side being made smaller than the throat height at the leading side.

摘要翻译： 根据本发明的实施例提供一种磁头，其中可以减小磁道宽度方向上的写入场分布的扩大，而不降低写入场强度。 主极包括具有提供写入轨道宽度的部分的磁极尖端和在元件高度方向上从空气轴承表面凹陷的磁轭部分，磁极末端包括具有不同轨道宽度方向的至少两个磁性膜，以及 在后侧的喉部高度小于前侧的喉部高度。

公开(公告)号：US20060262453A1

公开(公告)日：2006-11-23

申请号：US11436382

申请日：2006-05-17

申请人： Masafumi Mochizuki ,  Yasutaka Nishida ,  Takehiko Hamaguchi ,  Kimitoshi Etoh

发明人： Masafumi Mochizuki ,  Yasutaka Nishida ,  Takehiko Hamaguchi ,  Kimitoshi Etoh

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/313 ,  G11B5/3163

摘要： Embodiments of the invention provide a magnetic head which can suppress broadening of the magnetic field distribution in the track-width direction without reducing the magnetic field intensity. In one embodiment, a main pole is composed of a pole tip having a part providing a write-track width, and a yoke part recessed from the air bearing surface in the element-height direction, where the trailing side surface of the pole tip is made as an asymmetric structure with respect to the track center.

摘要翻译： 本发明的实施例提供一种可以抑制磁道宽度方向的磁场分布的扩大而不降低磁场强度的磁头。 在一个实施例中，主极由具有提供写入轨道宽度的部分的极尖和从元件高度方向上的空气轴承表面凹陷的磁极部分组成，其中极尖的后侧表面为 作为相对于轨道中心的不对称结构。

公开(公告)号：US07088548B2

公开(公告)日：2006-08-08

申请号：US10677302

申请日：2003-10-03

申请人： Yasutaka Nishida ,  Hisashi Takano ,  Masafumi Mochizuki

发明人： Yasutaka Nishida ,  Hisashi Takano ,  Masafumi Mochizuki

IPC分类号： G11B5/127 ,  G11B5/187

CPC分类号： G11B5/1278 ,  G11B5/00 ,  G11B5/488 ,  G11B5/667 ,  G11B5/73 ,  G11B2005/0029 ,  Y10T428/11 ,  Y10T428/31826

摘要： To make a soft magnetic underlayer of a double layered perpendicular magnetic recording medium thinner than heretofore while avoiding saturation. Assuming that Tb1 is the thickness of the soft magnetic underlayer of the double layered perpendicular magnetic recording medium, BS2 the saturation flux density of the same, Tm the thickness of a magnetic recording head's main pole 1 along a track direction in the vicinity of its floating surface, TWW the track width of the same, and BS1 the saturation flux density of the same, then Tb1

摘要翻译： 为了制造比以前更薄的双层垂直磁记录介质的软磁性底层，同时避免饱和。 假设T b1是双层垂直磁记录介质的软磁性底层的厚度，则B S2的饱和磁通密度为T m 磁记录头的主极1沿着其浮动表面附近的轨道方向的厚度，其轨道宽度为T S1， SUB>其饱和磁通密度，然后是T b1，其中T 1，S T， / 2（B S2 S2）（T N m + T N W N））。

公开(公告)号：US07054105B2

公开(公告)日：2006-05-30

申请号：US10693886

申请日：2003-10-28

申请人： Masafumi Mochizuki ,  Atsushi Nakamura ,  Kimitoshi Etoh

发明人： Masafumi Mochizuki ,  Atsushi Nakamura ,  Kimitoshi Etoh

IPC分类号： G11B5/187

CPC分类号： G11B5/1278 ,  G11B5/012 ,  G11B5/09 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/4886 ,  G11B2005/0029

摘要： A magnetic field distribution of a recording head is made linear so that a curvature of the magnetic-transition pattern in recording bit cells can be corrected. In a SPT head having a main pole 1 and an auxiliary pole 3, a magnetic layer 32 is disposed on a trailing side of the main pole. The magnetic layer is provided with a protruding portion 32a protruding towards the main pole. A width Nw of a side of the protruding portion opposite the main pole of the protruding portion is made smaller than a width Tww of the main pole on the trailing side.

摘要翻译： 记录头的磁场分布是线性的，从而可以校正记录位单元中的磁转变图案的曲率。 在具有主极1和辅助极3的SPT头中，在主极的后侧设置有磁性层32。 磁性层设置有朝向主极突出的突出部分32a。 突出部分的与突出部分的主极相对的一侧的宽度Nw被制成小于在后侧的主极的宽度Tww。

公开(公告)号：US20060092562A1

公开(公告)日：2006-05-04

申请号：US10977315

申请日：2004-10-29

申请人： Kuok Ho ,  Yimin Hsu ,  Masafumi Mochizuki ,  Ching Tsang ,  Roger Wood

发明人： Kuok Ho ,  Yimin Hsu ,  Masafumi Mochizuki ,  Ching Tsang ,  Roger Wood

IPC分类号： G11B5/17

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

摘要： Embodiments of the present invention are directed to structures of a recording head having a winged design for reducing corner stray magnetic fields. In one embodiment, the present invention comprises a magnetic recording head comprising a plurality of components. In embodiments of the present invention at least one of the plurality of components comprises a surface exposed to an air bearing surface when in operation with a recording medium. The surface exposed to the air bearing surface comprises notched edges for constraining corner stray magnetic fields associated therewith.

公开(公告)号：US20060082930A1

公开(公告)日：2006-04-20

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： G11B5/33 ,  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：US07027248B2

公开(公告)日：2006-04-11

申请号：US10633621

申请日：2003-08-05

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： In a thermal assisted type magnetic disk apparatus having a head holding a heat element and a write element, in which coercivity of a disk is locally reduced by temperature-increasing the disk and writing is performed by the write element, along with a seek operation to move the head by a rotary actuator in a radial direction, a yaw angle is changed and a heat area and the write element are track-shifted. A mechanism to offset one of the heat area and the write element in a width direction of a slider, to array the heat element and the write element in a track running direction in correspondence with the yaw angle of the head.

摘要翻译： 在具有保持加热元件的头部和写入元件的热辅助型磁盘装置中，通过写入元件，通过写入元件执行盘的矫顽力局部减小并且进行寻道操作 通过旋转致动器在径向方向上移动头部，改变偏航角，并且对热区域和写入元件进行轨道移动。 一种抵消滑块的宽度方向上的加热区域和写入元件中的一个的机构，用于使加热元件和写入元件沿与磁头的偏航角相对应的磁道行进方向排列。

公开(公告)号：US20050207061A1

公开(公告)日：2005-09-22

申请号：US11134446

申请日：2005-05-23

申请人： Masafumi Mochizuki ,  Atsushi Nakamura ,  Yoji Maruyama

发明人： Masafumi Mochizuki ,  Atsushi Nakamura ,  Yoji Maruyama

IPC分类号： G11B5/667 ,  G11B5/00 ,  G11B5/127 ,  G11B5/147 ,  G11B5/17 ,  G11B5/265 ,  G11B5/31 ,  G11B5/33 ,  G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/2652 ,  G11B5/313 ,  G11B5/332 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0016 ,  G11B2005/0029 ,  G11B2005/3996

摘要： A magnetic head is composed to diminish disordered writing bits of a recording layer or reading noise caused by a magnetic field generated from an under layer without decreasing a writing magnetic field strength of the magnetic head. The magnetic head includes a write head provided with a main pole and one or more auxiliary poles, a read head provided with a read element, and coils located on both sides of the main pole in a manner to sandwich the main pole. The coil located on one side generates the asymmetrical magneto-motive force for magnetizing the main pole to that generated by the coil located on the other side.

摘要翻译： 磁头被构成为减少记录层的无序写入位或从下层产生的磁场产生的噪声，而不降低磁头的写入磁场强度。 磁头包括设置有主极和一个或多个辅助极的写入头，设置有读取元件的读取头以及以主夹具的方式位于主极两侧的线圈。 位于一侧的线圈产生用于将主极磁化成位于另一侧的线圈所产生的非对称磁力。