公开(公告)号：US20080239580A1

公开(公告)日：2008-10-02

申请号：US11727372

申请日：2007-03-26

申请人： Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano ,  Kenji Yokoyama ,  Naoto Matono

发明人： Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano ,  Kenji Yokoyama ,  Naoto Matono

IPC分类号： G11B5/147 ,  G03C5/00 ,  G11B5/54

CPC分类号： G11B5/3133 ,  G11B5/3163 ,  G11B5/6064 ,  Y10T29/49044

摘要： A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The magnetic head further incorporates an antireflection film disposed between the first shield and the first gap layer or between the first gap layer and the pole layer. The pole layer is formed by frame plating.

摘要翻译： 磁头包括：面向介质的表面; 线圈 极层; 第一和第二屏蔽设置成夹在其间的极层; 设置在所述第一屏蔽和所述极层之间的第一间隙层; 设置在第二屏蔽和极层之间的第二间隙层; 和基材。 第一屏蔽件比第二屏蔽件更靠近基板。 磁头还包括设置在第一屏蔽和第一间隙层之间或者设置在第一间隙层和极层之间的抗反射膜。 极层通过框架电镀形成。

公开(公告)号：US07826175B2

公开(公告)日：2010-11-02

申请号：US11797473

申请日：2007-05-03

申请人： Kenji Yokoyama ,  Naoto Matono ,  Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano

发明人： Kenji Yokoyama ,  Naoto Matono ,  Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano

IPC分类号： G11B5/17

CPC分类号： G11B5/3116

摘要： A thin-film magnetic head includes a first magnetic layer, a flat, spiral-shaped coil, a toroidal-shaped insulating layer covering the coil, and a second magnetic layer touching the insulating layer and disposed to sandwich part of the coil between itself and the first magnetic layer. The second magnetic layer has a recessed portion that enters a space inside the insulating layer. In the recessed portion, the bottom surface of the second magnetic layer includes a first flat portion a part of which touches the top surface of the first magnetic layer, while the top surface of the second magnetic layer includes a second flat portion located in the space and substantially parallel to the first flat portion. In a cross section that divides each of the first and second magnetic layers into two equal portions, the second flat portion is 0.3 to 6 μm in length, and a distance from an edge of the interface between the top surface of the first magnetic layer and the first flat portion closer to the medium facing surface to an edge of the top surface of the first magnetic layer farther from the medium facing surface is 0.35 to 0.95 times the length of the first flat portion.

摘要翻译： 薄膜磁头包括第一磁性层，扁平螺旋形线圈，覆盖线圈的环形绝缘层和接触绝缘层的第二磁性层，并且设置成将线圈的一部分夹在其自身与 第一磁性层。 第二磁性层具有进入绝缘层内的空间的凹部。 在凹部中，第二磁性层的底表面包括第一平坦部分，其一部分接触第一磁性层的顶表面，而第二磁性层的顶表面包括位于该空间中的第二平坦部分 并且基本上平行于第一平坦部分。 在将第一和第二磁性层中的每一个分成两个相等部分的横截面中，第二平坦部分的长度为0.3至6μm，并且与第一磁性层的顶表面之间的界面边缘与 第一平坦部分比第一平坦部分的长度更靠近第一磁性层的顶表面的与介质相对表面更远的介质面向表面的边缘的第一平坦部分是0.35至0.95倍。

公开(公告)号：US20080273273A1

公开(公告)日：2008-11-06

申请号：US11797473

申请日：2007-05-03

申请人： Kenji Yokoyama ,  Naoto Matono ,  Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano

发明人： Kenji Yokoyama ,  Naoto Matono ,  Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano

IPC分类号： G11B5/33

CPC分类号： G11B5/3116

摘要： A thin-film magnetic head includes a first magnetic layer, a flat, spiral-shaped coil, a toroidal-shaped insulating layer covering the coil, and a second magnetic layer touching the insulating layer and disposed to sandwich part of the coil between itself and the first magnetic layer. The second magnetic layer has a recessed portion that enters a space inside the insulating layer. In the recessed portion, the bottom surface of the second magnetic layer includes a first flat portion a part of which touches the top surface of the first magnetic layer, while the top surface of the second magnetic layer includes a second flat portion located in the space and substantially parallel to the first flat portion. In a cross section that divides each of the first and second magnetic layers into two equal portions, the second flat portion is 0.3 to 6 μm in length, and a distance from an edge of the interface between the top surface of the first magnetic layer and the first flat portion closer to the medium facing surface to an edge of the top surface of the first magnetic layer farther from the medium facing surface is 0.35 to 0.95 times the length of the first flat portion.

摘要翻译： 薄膜磁头包括第一磁性层，扁平螺旋形线圈，覆盖线圈的环形绝缘层和接触绝缘层的第二磁性层，并且设置成将线圈的一部分夹在其自身与 第一磁性层。 第二磁性层具有进入绝缘层内的空间的凹部。 在凹部中，第二磁性层的底表面包括第一平坦部分，其一部分接触第一磁性层的顶表面，而第二磁性层的顶表面包括位于该空间中的第二平坦部分 并且基本上平行于第一平坦部分。 在将第一和第二磁性层中的每一个分成两个相等部分的横截面中，第二平坦部分的长度为0.3-6μm，并且与第一磁性层的顶表面之间的界面的边缘与 第一平坦部分比第一平坦部分的长度更靠近第一磁性层的顶表面的与介质相对表面更远的介质面向表面的边缘的第一平坦部分是0.35至0.95倍。

公开(公告)号：US20080247087A1

公开(公告)日：2008-10-09

申请号：US11783232

申请日：2007-04-06

申请人： Koichi Otani ,  Naoto Matono ,  Tatsuya Harada ,  Kenji Yokoyama ,  Hidetaka Kawano

发明人： Koichi Otani ,  Naoto Matono ,  Tatsuya Harada ,  Kenji Yokoyama ,  Hidetaka Kawano

IPC分类号： G11B5/187

CPC分类号： G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3967 ,  Y10T29/49046

摘要： A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The first shield has a first layer and a second layer disposed between the first layer and the first gap layer.

摘要翻译： 磁头包括：面向介质的表面; 线圈 极层; 第一和第二屏蔽设置成夹在其间的极层; 设置在所述第一屏蔽和所述极层之间的第一间隙层; 设置在第二屏蔽和极层之间的第二间隙层; 和基材。 第一屏蔽件比第二屏蔽件更靠近基板。 第一屏蔽具有设置在第一层和第一间隙层之间的第一层和第二层。

公开(公告)号：US08325440B2

公开(公告)日：2012-12-04

申请号：US11727372

申请日：2007-03-26

申请人： Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano ,  Kenji Yokoyama ,  Naoto Matono

发明人： Tatsuya Harada ,  Koichi Otani ,  Hidetaka Kawano ,  Kenji Yokoyama ,  Naoto Matono

IPC分类号： G11B5/23 ,  G11B5/31 ,  G11B5/11 ,  H04R31/00

CPC分类号： G11B5/3133 ,  G11B5/3163 ,  G11B5/6064 ,  Y10T29/49044

摘要： A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The magnetic head further incorporates an antireflection film disposed between the first shield and the first gap layer or between the first gap layer and the pole layer. The pole layer is formed by frame plating.

摘要翻译： 磁头包括：面向介质的表面; 线圈 极层; 第一和第二屏蔽设置成夹在其间的极层; 设置在所述第一屏蔽和所述极层之间的第一间隙层; 设置在第二屏蔽和极层之间的第二间隙层; 和基材。 第一屏蔽件比第二屏蔽件更靠近基板。 磁头还包括设置在第一屏蔽和第一间隙层之间或者设置在第一间隙层和极层之间的抗反射膜。 极层通过框架电镀形成。

公开(公告)号：US07995308B2

公开(公告)日：2011-08-09

申请号：US11783232

申请日：2007-04-06

申请人： Koichi Otani ,  Naoto Matono ,  Tatsuya Harada ,  Kenji Yokoyama ,  Hidetaka Kawano

发明人： Koichi Otani ,  Naoto Matono ,  Tatsuya Harada ,  Kenji Yokoyama ,  Hidetaka Kawano

IPC分类号： G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3967 ,  Y10T29/49046

摘要： A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The first shield has a first layer and a second layer disposed between the first layer and the first gap layer.

摘要翻译： 磁头包括：面向介质的表面; 线圈 极层; 第一和第二屏蔽件设置成夹在其间的极层; 设置在所述第一屏蔽和所述极层之间的第一间隙层; 设置在第二屏蔽和极层之间的第二间隙层; 和基材。 第一屏蔽件比第二屏蔽件更靠近基板。 第一屏蔽具有设置在第一层和第一间隙层之间的第一层和第二层。

公开(公告)号：US08000064B2

公开(公告)日：2011-08-16

申请号：US12000519

申请日：2007-12-13

申请人： Hidetaka Kawano ,  Hiromichi Umehara ,  Takamitsu Sakamoto ,  Koichi Otani ,  Noriaki Kasahara ,  Naoto Matono

发明人： Hidetaka Kawano ,  Hiromichi Umehara ,  Takamitsu Sakamoto ,  Koichi Otani ,  Noriaki Kasahara ,  Naoto Matono

IPC分类号： G11B5/11 ,  H04R31/00

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49055 ,  Y10T156/10

摘要： A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main magnetic pole part connected to the tip main magnetic pole part on a side opposite from the medium-opposing surface side and wider than the tip main magnetic pole part in a track width direction; a return yoke extending in the height direction from the medium-opposing surface and magnetically coupling with the base main magnetic pole part at a position distanced from the medium-opposing surface in the height direction, while opposing the tip main magnetic pole part through a write gap layer in a bit length direction in the medium-opposing surface; and a main magnetic pole adjacent magnetic shield layer extending along at least part of side faces of the main magnetic pole other than the medium-opposing surface as seen in a laminating direction, while holding a nonmagnetic layer between the main magnetic pole and the main magnetic pole adjacent magnetic shield layer.

摘要翻译： 垂直记录薄膜磁头包括：主磁极，其具有从介质相对表面在高度方向上延伸的尖端主磁极部分和在相对侧的一侧连接到尖端主磁极部分的基极主磁极部分 从所述中等相对面侧开始并且比所述尖端主磁极部在轨道宽度方向上宽; 回转轭，其从中间相对表面在高度方向上延伸，并且在距离介质相对表面在高度方向上远离的位置处与基部主磁极部分磁耦合，同时通过写入方式与尖端主磁极部分相对 中间相对表面中的位长度方向上的间隙层; 以及与沿着层叠方向观察的中间相对面以外的主磁极的至少一部分的侧面相邻的磁屏蔽层的主磁极，同时在主磁极和主磁体之间保持非磁性层 极相邻磁屏蔽层。

公开(公告)号：US07796359B2

公开(公告)日：2010-09-14

申请号：US11892541

申请日：2007-08-23

申请人： Koichi Otani ,  Hiromichi Umehara ,  Naoto Matono ,  Takamitsu Sakamoto ,  Noriaki Kasahara ,  Hidetaka Kawano

发明人： Koichi Otani ,  Hiromichi Umehara ,  Naoto Matono ,  Takamitsu Sakamoto ,  Noriaki Kasahara ,  Hidetaka Kawano

IPC分类号： G11B5/127

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3133 ,  G11B5/6064

摘要： A magnetic head includes a pole layer, a first and a second shield disposed to sandwich the pole layer, and a nonmagnetic layer disposed around the first shield. The pole layer includes a first portion having an end face located in a medium facing surface, and a second portion that is located farther from the medium facing surface than is the first portion. The second portion is greater in thickness than the first portion. A bottom surface of the second portion is located closer to a substrate than is a bottom surface of the first portion. The first shield has a first top surface portion opposed to the bottom surface of the first portion with the first gap layer in between. The nonmagnetic layer has a second top surface portion opposed to the bottom surface of the second portion with the first gap layer in between. A difference in level is formed between the first and the second top surface portion such that the second top surface portion is located closer to the substrate than is the first top surface portion.

摘要翻译： 磁头包括极层，设置成夹住极层的第一和第二屏蔽件以及围绕第一屏蔽件设置的非磁性层。 极层包括具有位于介质面向表面中的端面的第一部分和比第一部分更远离介质面向表面的第二部分。 第二部分的厚度大于第一部分。 第二部分的底表面比第一部分的底表面更靠近基底。 第一屏蔽具有与第一部分的底表面相对的第一顶表面部分，其间具有第一间隙层。 非磁性层具有与第二部分的底表面相对的第二顶表面部分，其间具有第一间隙层。 在第一顶表面部分和第二顶表面部分之间形成水平差，使得第二顶表面部分比第一顶表面部分更靠近基底。

公开(公告)号：US20090052094A1

公开(公告)日：2009-02-26

申请号：US11892541

申请日：2007-08-23

申请人： Koichi Otani ,  Hiromichi Umehara ,  Naoto Matono ,  Takamitsu Sakamoto ,  Noriaki Kasahara ,  Hidetaka Kawano

发明人： Koichi Otani ,  Hiromichi Umehara ,  Naoto Matono ,  Takamitsu Sakamoto ,  Noriaki Kasahara ,  Hidetaka Kawano

IPC分类号： G11B5/33

CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3133 ,  G11B5/6064

摘要： A magnetic head includes a pole layer, a first and a second shield disposed to sandwich the pole layer, and a nonmagnetic layer disposed around the first shield. The pole layer includes a first portion having an end face located in a medium facing surface, and a second portion that is located farther from the medium facing surface than is the first portion. The second portion is greater in thickness than the first portion. A bottom surface of the second portion is located closer to a substrate than is a bottom surface of the first portion. The first shield has a first top surface portion opposed to the bottom surface of the first portion with the first gap layer in between. The nonmagnetic layer has a second top surface portion opposed to the bottom surface of the second portion with the first gap layer in between. A difference in level is formed between the first and the second top surface portion such that the second top surface portion is located closer to the substrate than is the first top surface portion.

摘要翻译： 磁头包括极层，设置成夹住极层的第一和第二屏蔽件以及围绕第一屏蔽件设置的非磁性层。 极层包括具有位于介质面向表面中的端面的第一部分和比第一部分更远离介质面向表面的第二部分。 第二部分的厚度大于第一部分。 第二部分的底表面比第一部分的底表面更靠近基底。 第一屏蔽具有与第一部分的底表面相对的第一顶表面部分，其间具有第一间隙层。 非磁性层具有与第二部分的底表面相对的第二顶表面部分，其间具有第一间隙层。 在第一顶表面部分和第二顶表面部分之间形成水平差，使得第二顶表面部分比第一顶表面部分更靠近基底。

公开(公告)号：US20090273863A1

公开(公告)日：2009-11-05

申请号：US12000519

申请日：2007-12-13

申请人： Hidetaka Kawano ,  Hiromichi Umehara ,  Takamitsu Sakamoto ,  Koichi Otani ,  Noriaki Kasahara ,  Naoto Matono

发明人： Hidetaka Kawano ,  Hiromichi Umehara ,  Takamitsu Sakamoto ,  Koichi Otani ,  Noriaki Kasahara ,  Naoto Matono

IPC分类号： G11B5/33 ,  B32B37/02

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49055 ,  Y10T156/10

摘要： A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main magnetic pole part connected to the tip main magnetic pole part on a side opposite from the medium-opposing surface side and wider than the tip main magnetic pole part in a track width direction; a return yoke extending in the height direction from the medium-opposing surface and magnetically coupling with the base main magnetic pole part at a position distanced from the medium-opposing surface in the height direction, while opposing the tip main magnetic pole part through a write gap layer in a bit length direction in the medium-opposing surface; and a main magnetic pole adjacent magnetic shield layer extending along at least part of side faces of the main magnetic pole other than the medium-opposing surface as seen in a laminating direction, while holding a nonmagnetic layer between the main magnetic pole and the main magnetic pole adjacent magnetic shield layer.

摘要翻译： 垂直记录薄膜磁头包括：主磁极，其具有从介质相对表面在高度方向上延伸的尖端主磁极部分和在相对侧的一侧连接到尖端主磁极部分的基极主磁极部分 从所述中等相对面侧开始并且比所述尖端主磁极部在轨道宽度方向上宽; 回转轭，其从中间相对表面在高度方向上延伸，并且在距离介质相对表面在高度方向上远离的位置处与基部主磁极部分磁耦合，同时通过写入方式与尖端主磁极部分相对 中间相对表面中的位长度方向上的间隙层; 以及与沿着层叠方向观察的中间相对面以外的主磁极的至少一部分的侧面相邻的磁屏蔽层的主磁极，同时在主磁极和主磁体之间保持非磁性层 极相邻磁屏蔽层。