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1. 发明申请

US20080019042A1 Perpendicular Magnetic Recording Head and Perpendicular Magnetic Recording/Reproducing Head 有权
标题翻译：垂直磁记录头和垂直磁记录/再现头
公开(公告)号：US20080019042A1
公开(公告)日：2008-01-24
申请号：US11780600
申请日：2007-07-20
申请人： Yusuke TOMA , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita , Toshinori Watanabe
发明人： Yusuke TOMA , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita , Toshinori Watanabe
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3123 , G11B5/3136 , G11B5/3912 , G11B5/3967
摘要： A perpendicular magnetic recording head includes a first magnetic layer having a main magnetic pole exposed at a medium-facing surface that faces a recording medium; a second magnetic layer that faces the first magnetic layer with a nonmagnetic layer interposed therebetween; and a coil layer for applying a recording magnetic field to the first magnetic layer. The second magnetic layer includes a relatively thick edge portion, whereby the edge-write magnetic field is reduced and the external magnetic field resistance is increased.
摘要翻译：垂直磁记录头包括：第一磁性层，其具有在面向记录介质的面向中间的表面处暴露的主磁极; 面向第一磁性层的第二磁性层，介于其间的非磁性层; 以及用于向第一磁性层施加记录磁场的线圈层。第二磁性层包括相对较厚的边缘部分，由此边缘写入磁场减小并且外部磁场电阻增加。

2. 发明申请

US20080174911A1 PERPENDICULAR MAGNETIC RECORDING HEAD 有权
标题翻译：全能磁记录头
公开(公告)号：US20080174911A1
公开(公告)日：2008-07-24
申请号：US11943938
申请日：2007-11-21
申请人： Yusuke Toma , Kiyoshi Kobayashi , Toru Takahashi , Hiroshi Kameda
发明人： Yusuke Toma , Kiyoshi Kobayashi , Toru Takahashi , Hiroshi Kameda
IPC分类号： G11B5/127 , G11B5/31
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A perpendicular magnetic recording head is provided capable of suppressing the magnetic field attributable to the edge write phenomenon and improving resistance to an external magnetic field. The perpendicular magnetic recording head includes a magnetic layer that has a main magnetic pole on a surface facing a recording medium; a return yoke layer that is disposed on the magnetic layer with a nonmagnetic layer disposed therebetween and has a large width in the direction of the main magnetic pole; and a coil layer for applying a recording magnetic field to the magnetic layer. The return yoke layer is provided with such a shape that as seen in the plan view, the return yoke layer is exposed from the medium facing surface with a width not greater than the width in the track width direction of a protrusion region of the return yoke layer that covers the coil layer and the width of the return yoke layer gradually increases as it goes toward the starting point of the height direction.
摘要翻译：提供了能够抑制归因于边缘写入现象的磁场并提高对外部磁场的抵抗力的垂直磁记录头。垂直磁记录头包括在面向记录介质的表面上具有主磁极的磁性层; 返回磁轭层，其设置在磁性层上，其间设置有非磁性层，并且在主磁极的方向上具有大的宽度; 以及用于向磁性层施加记录磁场的线圈层。返回磁轭层具有如下的形状：从平面图看，返回磁轭层从介质面向表面露出，宽度不大于返回磁轭的突出区域的磁道宽度方向上的宽度覆盖线圈层的层和返回轭层的宽度随着朝向高度方向的起点逐渐增加。

3. 发明授权

US08018680B2 Vertical magnetic recording head device with the return yoke layer having thick portions 有权
标题翻译：垂直磁记录头装置，其返回轭层具有较厚的部分
公开(公告)号：US08018680B2
公开(公告)日：2011-09-13
申请号：US11947148
申请日：2007-11-29
申请人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi
发明人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi
IPC分类号： G11B5/147 , G11B5/39
CPC分类号： G11B5/1278 , G11B5/3116 , Y10T428/11
摘要： A vertical magnetic recording head device includes: a magnetic layer that includes a main magnetic pole exposed from a surface facing a recording medium; a return yoke layer that is provided on the magnetic layer with a non-magnetic layer interposed therebetween; and coil layers that apply a recording magnetic field to the magnetic layer and the return yoke layer. In the vertical magnetic recording head device, the return yoke layer includes thick portions that extend in a height direction in edge regions arranged in a track width direction.
摘要翻译：垂直磁记录头装置包括：磁性层，其包括从面向记录介质的表面暴露的主磁极; 在磁性层上设置有介于其间的非磁性层的返回磁轭层; 以及向磁性层和返回轭层施加记录磁场的线圈层。在垂直磁记录头装置中，返回磁轭层包括沿轨道宽度方向布置的边缘区域沿高度方向延伸的厚壁部分。

4. 发明申请

US20080152951A1 VERTICAL MAGNETIC RECORDING HEAD DEVICE 有权
标题翻译：垂直磁记录头设备
公开(公告)号：US20080152951A1
公开(公告)日：2008-06-26
申请号：US11947148
申请日：2007-11-29
申请人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi
发明人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116 , Y10T428/11
摘要： A vertical magnetic recording head device includes: a magnetic layer that includes a main magnetic pole exposed from a surface facing a recording medium; a return yoke layer that is provided on the magnetic layer with a non-magnetic layer interposed therebetween; and coil layers that apply a recording magnetic field to the magnetic layer and the return yoke layer. In the vertical magnetic recording head device, the return yoke layer includes thick portions that extend in a height direction in edge regions arranged in a track width direction
摘要翻译：垂直磁记录头装置包括：磁性层，其包括从面向记录介质的表面暴露的主磁极; 在磁性层上设置有介于其间的非磁性层的返回磁轭层; 以及向磁性层和返回轭层施加记录磁场的线圈层。在垂直磁记录头装置中，返回磁轭层包括沿轨道宽度方向布置的边缘区域沿高度方向延伸的厚壁部分

5. 发明申请

US20080019043A1 Perpendicular Magnetic Recording Head and Perpendicular Magnetic Recording/Reproducing Head 有权
标题翻译：垂直磁记录头和垂直磁记录/再现头
公开(公告)号：US20080019043A1
公开(公告)日：2008-01-24
申请号：US11780608
申请日：2007-07-20
申请人： Yusuke TOMA , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita
发明人： Yusuke TOMA , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/3912 , G11B5/3967
摘要： A perpendicular magnetic recording head according to the present invention is composed of a first magnetic layer having a main magnetic pole exposed at a facing surface opposite a recording medium, a second magnetic layer adjacent to the first magnetic layer with an intermediary non-magnetic layer disposed therebetween, and a coil layer for applying a recording magnetic field to the first magnetic layer. Since the second magnetic layer has a shape including a substantially arched portion in its cross section along a height direction, it becomes possible to keep an Edge Write magnetic field in a low level and improve external magnetic field resistance.
摘要翻译：根据本发明的垂直磁记录头由具有在与记录介质相对的相对表面暴露的主磁极的第一磁性层组成，与第一磁性层相邻的第二磁性层，其中设置有中间非磁性层以及用于向第一磁性层施加记录磁场的线圈层。由于第二磁性层具有沿其高度方向的横截面中包括大致拱形部分的形状，因此可以将边缘写入磁场保持在低电平并提高外部磁场电阻。

6. 发明授权

US08045292B2 Perpendicular magnetic recording head with the return yoke layer having gradually increasing the width 有权
标题翻译：具有返回轭层的垂直磁记录头具有逐渐增加的宽度
公开(公告)号：US08045292B2
公开(公告)日：2011-10-25
申请号：US11943938
申请日：2007-11-21
申请人： Yusuke Toma , Kiyoshi Kobayashi , Toru Takahashi , Hiroshi Kameda
发明人： Yusuke Toma , Kiyoshi Kobayashi , Toru Takahashi , Hiroshi Kameda
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A perpendicular magnetic recording head is provided capable of suppressing the magnetic field attributable to the edge write phenomenon and improving resistance to an external magnetic field. The perpendicular magnetic recording head includes a magnetic layer that has a main magnetic pole on a surface facing a recording medium; a return yoke layer that is disposed on the magnetic layer with a nonmagnetic layer disposed therebetween and has a large width in the direction of the main magnetic pole; and a coil layer for applying a recording magnetic field to the magnetic layer. The return yoke layer is provided with such a shape that as seen in the plan view, the return yoke layer is exposed from the medium facing surface with a width not greater than the width in the track width direction of a protrusion region of the return yoke layer that covers the coil layer and the width of the return yoke layer gradually increases in the height direction from the medium facing surface.
摘要翻译：提供了能够抑制归因于边缘写入现象的磁场并提高对外部磁场的抵抗力的垂直磁记录头。垂直磁记录头包括在面向记录介质的表面上具有主磁极的磁性层; 返回磁轭层，其设置在磁性层上，其间设置有非磁性层，并且在主磁极的方向上具有大的宽度; 以及用于向磁性层施加记录磁场的线圈层。返回磁轭层具有如下的形状：从平面图看，返回磁轭层从介质面向表面露出，宽度不大于返回磁轭的突出区域的磁道宽度方向上的宽度覆盖线圈层的层和返回轭层的宽度在与面向介质的表面的高度方向上逐渐增加。

7. 发明授权

US07983010B2 Perpendicular magnetic recording head and perpendicular magnetic recording/reproducing head with at least one shield layer having a substantially arched portion 有权
标题翻译：垂直磁记录头和具有至少一个具有基本上拱形部分的屏蔽层的垂直磁记录/再现头
公开(公告)号：US07983010B2
公开(公告)日：2011-07-19
申请号：US11780608
申请日：2007-07-20
申请人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita
发明人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita
IPC分类号： G11B5/39 , G11B5/147
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/3912 , G11B5/3967
摘要： A perpendicular magnetic recording head according to the present invention is composed of a first magnetic layer having a main magnetic pole exposed at a facing surface opposite a recording medium, a second magnetic layer adjacent to the first magnetic layer with an intermediary non-magnetic layer disposed therebetween, and a coil layer for applying a recording magnetic field to the first magnetic layer. Since the second magnetic layer has a shape including a substantially arched portion in its cross section along a height direction, it becomes possible to keep an Edge Write magnetic field in a low level and improve external magnetic field resistance.
摘要翻译：根据本发明的垂直磁记录头由具有在与记录介质相对的相对表面暴露的主磁极的第一磁性层组成，与第一磁性层相邻的第二磁性层，其中设置有中间非磁性层以及用于向第一磁性层施加记录磁场的线圈层。由于第二磁性层具有沿其高度方向的横截面中包括大致拱形部分的形状，因此可以将边缘写入磁场保持在低电平并提高外部磁场电阻。

8. 发明授权

US07903371B2 Perpendicular magnetic recording head and perpendicular magnetic recording/reproducing head having a magnetic shield layer with a thick edge portion 有权
标题翻译：垂直磁记录头和具有厚边缘部分的磁屏蔽层的垂直磁记录/再现头
公开(公告)号：US07903371B2
公开(公告)日：2011-03-08
申请号：US11780600
申请日：2007-07-20
申请人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita , Toshinori Watanabe
发明人： Yusuke Toma , Hiroshi Kameda , Kiyoshi Kobayashi , Toru Takahashi , Sumihito Morita , Toshinori Watanabe
IPC分类号： G11B5/147 , G11B5/39
CPC分类号： G11B5/1278 , G11B5/3123 , G11B5/3136 , G11B5/3912 , G11B5/3967
摘要： A perpendicular magnetic recording head includes a first magnetic layer having a main magnetic pole exposed at a medium-facing surface that faces a recording medium; a second magnetic layer that faces the first magnetic layer with a nonmagnetic layer interposed therebetween; and a coil layer for applying a recording magnetic field to the first magnetic layer. The second magnetic layer includes a relatively thick edge portion, whereby the edge-write magnetic field is reduced and the external magnetic field resistance is increased.
摘要翻译：垂直磁记录头包括：第一磁性层，其具有在面向记录介质的面向中的表面处暴露的主磁极; 面向第一磁性层的第二磁性层，介于其间的非磁性层; 以及用于向第一磁性层施加记录磁场的线圈层。第二磁性层包括相对较厚的边缘部分，由此边缘写入磁场减小并且外部磁场电阻增加。

9. 发明授权

US07852603B2 Perpendicular magnetic recording head capable of suppressing problem such as erasure of magnetic data 有权
标题翻译：能够抑制磁数据擦除等问题的垂直磁记录头
公开(公告)号：US07852603B2
公开(公告)日：2010-12-14
申请号：US11676113
申请日：2007-02-16
申请人： Kiyoshi Kobayashi , Hiroshi Kameda
发明人： Kiyoshi Kobayashi , Hiroshi Kameda
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A perpendicular magnetic recording head is provided. The perpendicular magnetic recording head includes a main magnetic pole layer overlapped with a sub-yoke layer. The sub-yoke layer having a multiple-magnetic domain includes a magnetic domain having dominant track-widthwise component in contact with a front end face of the sub-yoke layer. A main magnetic pole layer 24 is overlapped with the magnetic domain 35b and is affected by the magnetic domain 35b.
摘要翻译：提供垂直磁记录头。垂直磁记录头包括与副轭铁层重叠的主磁极层。具有多磁畴的子轭层包括具有与副轭铁层的前端面接触的主导轨宽分量的磁畴。主磁极层24与磁畴35b重叠，受磁畴35b的影响。

10. 发明申请

US20060164756A1 Perpendicular magnetic recording head 审中-公开
标题翻译：垂直磁记录头
公开(公告)号：US20060164756A1
公开(公告)日：2006-07-27
申请号：US11336250
申请日：2006-01-20
申请人： Hiroshi Kameda , Kiyoshi Kobayashi
发明人： Hiroshi Kameda , Kiyoshi Kobayashi
IPC分类号： G11B5/127
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/3116
摘要： An auxiliary magnetic section has a multilayer structure consisting of auxiliary magnetic layers and a non-magnetic layer and a first auxiliary magnetic layer is bonded to a main magnetic pole layer. This allows the auxiliary magnetic layers to have large induced magnetic anisotropy due to antiferromagnetic coupling in a track width direction. Since the first auxiliary magnetic layer is ferromagnetically coupled with the main magnetic pole layer, the magnetization of the main magnetic pole layer can be more properly directed in the track width direction as compared to known main magnetic pole layers and has low remanence. This leads to an increase in magnetic recording efficiency.
摘要翻译：辅助磁区具有由辅助磁性层和非磁性层构成的多层结构，第一辅助磁性层与主磁极层接合。这允许辅助磁性层由于在磁道宽度方向上的反铁磁耦合而具有大的感应磁各向异性。由于第一辅助磁性层与主磁极层铁磁耦合，所以与已知的主磁极层相比，主磁极层的磁化能够更加适合于轨道宽度方向，并且具有低剩磁。这导致磁记录效率的提高。

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