公开(公告)号：US20060103978A1

公开(公告)日：2006-05-18

申请号：US11257083

申请日：2005-10-25

申请人： Hisashi Takano ,  Yasutaka Nishida ,  Tomohiro Okada ,  Masafumi Mochizuki

发明人： Hisashi Takano ,  Yasutaka Nishida ,  Tomohiro Okada ,  Masafumi Mochizuki

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/012 ,  Y10S977/934 ,  Y10S977/935

摘要： A magnetic head for perpendicular recording without writing from the lateral sides of a main pole and without erasing data on adjacent tracks. A magnetic disk storage apparatus using the magnetic head. The lateral side of the main pole of a magnetic head for perpendicular recording may have an inverted tapered shape obtained by forming a groove as a track portion to an inorganic insulating layer and then forming a magnetic layer and then flattening the upper surface. A leading edge, a trailing edge, or both lateral edges of the magnetic head may be tapered. The taper may be either smooth and linear or curved in profile.

摘要翻译： 用于垂直记录的磁头，无需从主极的侧面进行写入，而不会在相邻轨道上擦除数据。 一种使用该磁头的磁盘存储装置。 用于垂直记录的磁头的主极的侧面可以具有通过在无机绝缘层上形成作为轨道部分的槽然后形成磁性层然后使上表面变平而获得的倒锥形。 磁头的前缘，后缘或两个侧边缘可以是锥形的。 锥形可以是平滑的，线性的或弯曲的。

公开(公告)号：US20060093863A1

公开(公告)日：2006-05-04

申请号：US11200001

申请日：2005-08-10

申请人： Yuko Tsuchiya ,  Masafumi Mochizuki ,  Teruo Kohashi ,  Hiroshi Ikekame

发明人： Yuko Tsuchiya ,  Masafumi Mochizuki ,  Teruo Kohashi ,  Hiroshi Ikekame

IPC分类号： G11B5/66

CPC分类号： G11B5/855 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/8404

摘要： A discrete track type perpendicular magnetic recording medium and a manufacturing method thereof are provided where the crystallographic orientation and perpendicular magnetic anisotropy of the magnetic recording layer are excellent, the magnetic properties of the magnetic recording layer are not deteriorated by processing, the manufacturing cost is not expensive, and a complicated manufacturing process is not required. A concavo-convex pattern structure consisting of a convex part corresponding to the position of the data track recording magnetic information and a concave part corresponding to the position of the space between data tracks is provided, and the base layer for controlling crystallographic orientation and the magnetic recording layer are stacked without voids on the concave and convex parts along the concavo-convex pattern structure.

摘要翻译： 提供了一种离散轨道型垂直磁记录介质及其制造方法，其中磁记录层的结晶取向和垂直磁各向异性优异，磁记录层的磁特性不会因加工而劣化，制造成本不 昂贵，并且不需要复杂的制造过程。 提供了由对应于数据磁道记录磁信息的位置的凸部和与数据磁道之间的空间的位置相对应的凹部组成的凹凸图案结构，并且用于控制晶体取向的基层和磁 记录层沿着凹凸图案结构在凹凸部上堆叠而没有空隙。

公开(公告)号：US20060082931A1

公开(公告)日：2006-04-20

申请号：US11252913

申请日：2005-10-17

申请人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Kaori Suzuki

发明人： Hiroshi Fukui ,  Yoji Maruyama ,  Masafumi Mochizuki ,  Kaori Suzuki

IPC分类号： G11B5/127

CPC分类号： G11B5/1278

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, a magnetic head includes a perpendicular write head having a main pole and an auxiliary pole; and a read head having a lower shield, an upper shield and a magneto-resistive element formed between the lower shield and the upper shield. At least one of the auxiliary pole, lower shield and upper shield has a recessed portion, whose height in an element height direction is lower than the height of edges thereof in a track width direction, on a surface opposite to the air bearing surface.

公开(公告)号：US20060082924A1

公开(公告)日：2006-04-20

申请号：US11254138

申请日：2005-10-18

申请人： Kimitoshi Etoh ,  Masafumi Mochizuki ,  Isao Nunokawa ,  Tomohiro Okada

发明人： Kimitoshi Etoh ,  Masafumi Mochizuki ,  Isao Nunokawa ,  Tomohiro Okada

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3136 ,  G11B5/315

摘要： Embodiments of the invention are directed to narrowing a read/write gap of a perpendicular magnetic head by applying a wrap around shield, data erasing from return pole edges by returning recording field, and reducing TPR of a magnetic material. In one embodiment, the wrap around shields are formed by partitioning and making Gd, which is the height of the shield at the main pole side in the sensor height direction, smaller than the height of the shield connected to the return pole in the sensor height direction.

摘要翻译： 本发明的实施例涉及通过施加环绕屏蔽来缩小垂直磁头的读/写间隙，通过返回记录场从返回磁极边缘擦除数据，并降低磁性材料的TPR。 在一个实施例中，绕环屏蔽是通过分隔并形成的，Gd是传感器高度方向上的主极侧的屏蔽的高度，小于传感器高度处连接到返回极的屏蔽的高度 方向。

公开(公告)号：US07031108B2

公开(公告)日：2006-04-18

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： G11B5/17

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。

公开(公告)号：US20050213244A1

公开(公告)日：2005-09-29

申请号：US11134350

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.

公开(公告)号：US20050185335A1

公开(公告)日：2005-08-25

申请号：US11116301

申请日：2005-04-28

申请人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

发明人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

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

CPC分类号： G11B5/1871 ,  G11B5/127 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3146

摘要： A magnetic head includes a main pole having a first portion with a length (W1) in a cross-track direction which continuously increases from a leading edge side to a trailing edge side, a second portion formed on a trailing edge side of the first portion, and a third portion formed on a trailing edge side of the second portion. A length (W2) in the cross-track direction of a boundary line between the second portion and the third portion is longer than W1, and a length (W3) in the cross-track direction of a trailing edge of a third portion is substantially equal to W2.

摘要翻译： 磁头包括主极，该主极具有在从前缘侧到后缘侧连续增大的横向方向上的长度（W 1）的第一部分，形成在第一部分的后缘侧的第二部分 部分，以及形成在第二部分的后缘侧上的第三部分。 在第二部分和第三部分之间的边界线的横向方向上的长度（W 2）比W 1长，并且第三部分的后缘的横向方向上的长度（W 3） 部分基本上等于W 2。

公开(公告)号：US20050141137A1

公开(公告)日：2005-06-30

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： G11B5/31 ,  G11B5/11 ,  G11B5/127 ,  G11B5/147 ,  G11B5/187 ,  G11B5/23 ,  G11B5/39

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：US20050057853A1

公开(公告)日：2005-03-17

申请号：US10974807

申请日：2004-10-28

申请人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

发明人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

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

CPC分类号： G11B5/1871 ,  G11B5/127 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3146

摘要： A magnetic head having at least a main pole having a profile on a magnetic head air bearing surface composed of a first portion having a length in a cross-track direction which continuously increases from a leading edge to a trailing edge, and a second portion located on the side of the trailing edge of the first portion. A length of the second portion in the cross-track direction at the trailing edge is substantially equal to a length in the cross-track direction at the point of contact between the first and second portions. A rate of change in the length of the second portion in the cross-track direction from the leading edge to the trailing edge is different from a rate of increase in the length of the first portion in the cross-track direction.

摘要翻译： 一种磁头，其至少具有在磁头空气轴承表面上具有轮廓的主极，该磁头由从前缘到后缘连续增加的横向方向上的长度的第一部分和位于 在第一部分的后缘侧。 在后缘处的交叉轨道方向上的第二部分的长度基本上等于第一和第二部分之间的接触点处的交叉轨道方向上的长度。 从前缘到后缘的交叉轨道方向上的第二部分的长度的变化率与跨轨道方向上的第一部分的长度的增加速率不同。

公开(公告)号：US06813116B2

公开(公告)日：2004-11-02

申请号：US10314156

申请日：2002-12-09

申请人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

发明人： Atsushi Nakamura ,  Masafumi Mochizuki ,  Tomohiro Okada ,  Kimitoshi Etoh ,  Isao Nunokawa ,  Yoshiaki Kawato

IPC分类号： G11B5187

CPC分类号： G11B5/1871 ,  G11B5/127 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/3146

摘要： A single-pole type magnetic head for perpendicular recording which reduces the amount of side writing even in the presence of a yaw angle and prevents the effective track width from decreasing, and a magnetic recording disk apparatus using the same. A main pole is composed of at least two portions where the width of the first portion continuously increases from the upstream side to the downstream side in the medium moving direction and the width of the second portion is the same as the width of the first portion's downstream edge in the medium moving direction and is constant from the upstream side to the downstream side in the medium moving direction. This prevents the recording magnetic field strength from decreasing at the track edge and increases the effective track width while suppressing side writing, thereby realizing a magnetic recording disk apparatus with a high track density.

摘要翻译： 一种用于垂直记录的单极型磁头，即使在存在偏航角的情况下也减少了侧面写入量，并且防止了有效轨道宽度的减小，以及使用该磁头的磁记录盘装置。 主极由至少两个部分组成，其中第一部分的宽度在介质移动方向上从上游侧到下游侧连续增加，第二部分的宽度与第一部分的下游的宽度相同 在介质移动方向上边缘并且在介质移动方向上从上游侧到下游侧是恒定的。 这防止记录磁场强度在轨道边缘处减小，并且在抑制侧面写入的同时增加有效轨道宽度，从而实现具有高轨道密度的磁记录盘装置。