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1. 发明申请

US20050185335A1 Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效
标题翻译：用于垂直记录的磁头和使用该磁头的磁记录盘装置
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。

2. 发明申请

US20050057853A1 MAGNETIC HEADS FOR PERPENDICULAR RECORDING AND MAGNETIC RECORDING DISK APPARATUS USING THE SAME 失效
标题翻译：使用相同记录的磁头和磁记录盘装置
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。

3. 发明授权

US06813116B2 Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效
标题翻译：用于垂直记录的磁头和使用该磁头的磁记录盘装置
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。

4. 发明授权

US06995949B2 Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效
标题翻译：用于垂直记录的磁头和使用该磁头的磁记录盘装置
公开(公告)号：US06995949B2
公开(公告)日：2006-02-07
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： G11B5/187
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。

5. 发明授权

US06891697B2 Magnetic heads for perpendicular recording and magnetic recording disk apparatus using the same 失效
标题翻译：用于垂直记录的磁头和使用该磁头的磁记录盘装置
公开(公告)号：US06891697B2
公开(公告)日：2005-05-10
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。

6. 发明授权

US08203803B2 Magnetic recording head for perpendicular recording with wrap around shield, the fabrication process and magnetic disk storage apparatus mounting the magnetic head 失效
标题翻译：用于垂直记录的磁记录头，包围屏蔽，制造过程和安装磁头的磁盘存储装置
公开(公告)号：US08203803B2
公开(公告)日：2012-06-19
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： G11B5/31 , 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。

7. 发明申请

US20060082924A1 Magnetic recording head for perpendicular recording with wrap around shield, the fabrication process and magnetic disk storage apparatus mounting the magnetic head 失效
标题翻译：用于垂直记录的磁记录头，包围屏蔽，制造过程和安装磁头的磁盘存储装置
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。

8. 发明授权

US07990653B2 Perpendicular recording magnetic head with a main magnetic pole piece and an auxiliary magnetic pole piece 有权
标题翻译：垂直记录磁头，带有主磁极片和辅助磁极片
公开(公告)号：US07990653B2
公开(公告)日：2011-08-02
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： G11B5/127
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P2处的侧面间隙长度“gl”（2）在空气轴承表面位置P1处小于侧面间隙长度“gl”（1），以满足gl（1） > gl（2）。

9. 发明申请

US20070253107A1 Perpendicular recording magnetic head 有权
标题翻译：垂直记录磁头
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）。

10. 发明授权

US07054105B2 Magnetic recording head for perpendicular recording and including a portion protruding toward a mail pole and magnetic disc storage apparatus mounting the magnetic head 有权
标题翻译：用于垂直记录的磁记录头，包括向邮件杆突出的部分和安装磁头的磁盘存储装置
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。

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