专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US08325567B2 Thermally-assisted magnetic recording head comprising near-field light generator 有权
标题翻译：包括近场光发生器的热辅助磁记录头
公开(公告)号：US08325567B2
公开(公告)日：2012-12-04
申请号：US12557078
申请日：2009-09-10
申请人： Daisuke Miyauchi , Tsutomu Chou , Kosuke Tanaka , Susumu Aoki , Tetsuya Roppongi , Katsuki Kurihara
发明人： Daisuke Miyauchi , Tsutomu Chou , Kosuke Tanaka , Susumu Aoki , Tetsuya Roppongi , Katsuki Kurihara
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.
摘要翻译：提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触，发生器不包括传播边。因此，磁极端面与产生NFL的端面之间的距离为零。传播边缘不与磁极接触。因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。因此，确保NFL发射点处于传播边缘的终点。

52. 发明申请

US20120275280A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD, HEAD GIMBAL ASSEMBLY AND MAGNETIC RECORDING DEVICE 有权
标题翻译：热辅助磁记录头，磁头组件和磁记录装置
公开(公告)号：US20120275280A1
公开(公告)日：2012-11-01
申请号：US13097133
申请日：2011-04-29
申请人： Daisuke MIYAUCHI , Tetsuya Roppongi , Kosuke Tanaka , Tsutomu Chou , Eiji Komura
发明人： Daisuke MIYAUCHI , Tetsuya Roppongi , Kosuke Tanaka , Tsutomu Chou , Eiji Komura
IPC分类号： G11B13/08
CPC分类号： G11B5/314 , G11B5/3116 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes: a pole that generates a writing magnetic field from an end surface that forms a part of an air bearing surface that opposes a magnetic recording medium; a waveguide that propagates light to excite surface plasmon; and a plasmon generator that is provided between the pole and the waveguide and that generates near-field light from a near-field light generating end surface that forms a part of the air bearing surface by coupling with the light in a surface plasmon mode. The plasmon generator includes a flat plate part and a projection part that projects from the flat plate part to the waveguide side and is provided closer to a trailing side than the pole is.
摘要翻译：一种热辅助磁记录头，包括：从端面产生书写磁场的极，所述磁场形成与磁记录介质相对的空气轴承表面的一部分; 将光传播到激发表面等离子体激元的波导; 以及等离子体发生器，其设置在所述极和所述波导之间，并且通过以表面等离子体模式与所述光结合而从形成所述空气轴承表面的一部分的近场光产生端面产生近场光。等离子体发生器包括平板部分和突出部分，其从平板部分突出到波导侧，并且设置成比杆极靠近尾部。

53. 发明授权

US08208349B2 Thermally-assisted magnetic recording head having a gap between propagation edge and magnetic pole 有权
标题翻译：热辅助磁记录头在传播边缘和磁极之间具有间隙
公开(公告)号：US08208349B2
公开(公告)日：2012-06-26
申请号：US12688367
申请日：2010-01-15
申请人： Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Takahiko Izawa , Katsuki Kurihara
发明人： Kosuke Tanaka , Daisuke Miyauchi , Susumu Aoki , Tetsuya Roppongi , Tsutomu Chou , Takahiko Izawa , Katsuki Kurihara
IPC分类号： G11B11/00
CPC分类号： G11B5/3116 , G11B5/314 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.
摘要翻译：热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场极点从其相对到中等表面侧的端部产生写入场。近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分靠近相对中的表面侧。

54. 发明授权

US07843667B2 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US07843667B2
公开(公告)日：2010-11-30
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

55. 发明授权

US07554766B2 Magnetic head for perpendicular magnetic recording in which gap thickness and pole layer shape are defined for suppressing occurrence of pole erase phenomenon 有权
标题翻译：用于垂直磁记录的磁头，其中限定了间隙厚度和极层形状以抑制磁极擦除现象的发生
公开(公告)号：US07554766B2
公开(公告)日：2009-06-30
申请号：US11304769
申请日：2005-12-16
申请人： Norikazu Ota , Tetsuya Roppongi
发明人： Norikazu Ota , Tetsuya Roppongi
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic head for perpendicular magnetic recording comprises: a pole layer, a write shield layer, and a gap layer provided between the pole layer and the write shield layer. The pole layer incorporates a track width defining portion and a wide portion. The track width defining portion has an end located in a medium facing surface and defines the track width. The wide portion is coupled to the other end of the track width defining portion and has a width greater than the width of the track width defining portion. The value of NH×TH/WG is greater than zero and smaller than or equal to 0.85 μm, where NH is the distance from the medium facing surface to the boundary between the track width defining portion and the wide portion, WG is the space between the pole layer and the write shield layer taken in the medium facing surface, and TH is the distance from the medium facing surface to a point at which the space between the pole layer and the write shield layer starts to be greater than WG.
摘要翻译：用于垂直磁记录的磁头包括：极层，写屏蔽层和设置在极层和写屏蔽层之间的间隙层。极层包括轨道宽度限定部分和宽部分。轨道宽度限定部分具有位于介质面向表面中并限定轨道宽度的端部。宽部分耦合到轨道宽度限定部分的另一端并且具有大于轨道宽度限定部分的宽度的宽度。 NHxTH / WG的值大于零且小于或等于0.85μm，其中NH是从介质面向表面到轨道宽度限定部分与宽部分之间的边界的距离，WG是极点之间的空间并且写入屏蔽层被带到介质面对表面，并且TH是从介质面向表面到极层和写入屏蔽层之间的空间开始大于WG的点的距离。

56. 发明授权

US07219414B2 Method of manufacturing magnetic head for perpendicular magnetic recording 失效
标题翻译：用于垂直磁记录的磁头制造方法
公开(公告)号：US07219414B2
公开(公告)日：2007-05-22
申请号：US11041266
申请日：2005-01-25
申请人： Yuichi Watabe , Susumu Aoki , Yasuyuki Notsuke , Tetsuya Roppongi
发明人： Yuichi Watabe , Susumu Aoki , Yasuyuki Notsuke , Tetsuya Roppongi
IPC分类号： G11B5/187 , C25D5/102
CPC分类号： G11B5/147 , G11B5/1278 , G11B5/3116 , G11B5/3123 , G11B5/3163 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49048 , Y10T29/4906
摘要： A main pole layer of a magnetic head includes a first portion disposed at a distance from a medium facing surface, and a second portion that is smaller in thickness than the first portion and disposed between the first portion and the medium facing surface. The step of forming the main pole layer includes the steps of forming a plating layer such that one of ends of the plating layer closer to the medium facing surface is located at a position that coincides with the position of one of ends of the first portion closer to the medium facing surface; forming a first nonmagnetic layer to cover the plating layer; polishing the first nonmagnetic layer and the plating layer; forming a space by removing the plating layer; forming a magnetic layer, which will be the main pole layer, in the space and on the top surface of the first nonmagnetic layer; forming a second nonmagnetic layer to cover the magnetic layer; and polishing the second nonmagnetic layer and the magnetic layer.
摘要翻译：磁头的主极层包括设置在与介质相对表面一定距离处的第一部分，以及第二部分，该第二部分的厚度小于第一部分，并且设置在第一部分和介质面向表面之间。形成主极层的步骤包括以下步骤：形成电镀层，使得电镀层的靠近介质相对表面的端部之一位于与第一部分的端部中的一个端部的位置相近的位置处到面向中间的表面; 形成覆盖所述镀层的第一非磁性层; 抛光第一非磁性层和镀层; 通过去除镀层形成空间; 在第一非磁性层的空间和顶表面上形成作为主极层的磁性层; 形成第二非磁性层以覆盖所述磁性层; 并研磨第二非磁性层和磁性层。

57. 发明申请

US20060132972A1 Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head 有权
标题翻译：用于垂直磁记录的薄膜磁头和薄膜磁头的制造方法
公开(公告)号：US20060132972A1
公开(公告)日：2006-06-22
申请号：US11300277
申请日：2005-12-15
申请人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
发明人： Katsumichi Tagami , Tatsuya Harada , Hiroki Matsukuma , Tetsuya Roppongi , Susumu Aoki , Kazumasa Fukuda , Naoto Matono
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1872
摘要： A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WC of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT=WC
摘要翻译：提供了一种薄膜磁头，其由于抖动的减小而不会在写入场中显着降低而误差率降低。头包括至少一个感应写头元件，包括：主磁极层，具有从轨道宽度方向和前端表面的两个侧端面朝着轨道宽度方向的中心部分变化的内部饱和磁通密度，后端面的宽度方向; 辅助磁极层; 以及至少一个线圈层，与主磁极层的ABS侧的后缘相邻的写入场的轮廓线的曲率宽度W C C满足以下表达式：-0.15 * 其中W T是轨道宽度，W C和W的单位是W 是纳米。

58. 发明授权

US06901651B2 Method of manufacturing thin-film magnetic head 失效
标题翻译：制造薄膜磁头的方法
公开(公告)号：US06901651B2
公开(公告)日：2005-06-07
申请号：US09985610
申请日：2001-11-05
申请人： Yoshikazu Sato , Tetsuya Roppongi
发明人： Yoshikazu Sato , Tetsuya Roppongi
IPC分类号： G11B5/127 , G11B5/31 , G11B5/39 , G11B5/187 , C25D5/02
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/1278 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3163 , G11B5/3909 , G11B5/3967 , G11B2005/3996 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/4906
摘要： A manufacturing method in which a second magnetic layer of a thin-film magnetic head includes the steps of: forming a pole portion layer; forming a protective layer so as to cover a part of the pole portion layer located near the medium facing surface ABS; forming an electrode layer to be used as an electrode when forming a yoke portion layer by electroplating; forming the yoke portion layer by electroplating on the electrode layer using the electrode layer as an electrode; and removing an unnecessary portion of the electrode layer.
摘要翻译：一种制造方法，其中薄膜磁头的第二磁性层包括以下步骤：形成极部分层; 形成保护层，以覆盖位于介质对向表面ABS附近的极部分层的一部分; 在通过电镀形成轭部层时形成用作电极的电极层; 通过使用电极层作为电极在电极层上电镀形成磁轭部分层; 并去除电极层的不需要的部分。

59. 发明授权

US11514931B1 Magnetic head including main pole having top surface including first inclined portion, second inclined portion, and third inclined portion, and spin torque oscillator 有权
公开(公告)号：US11514931B1
公开(公告)日：2022-11-29
申请号：US17677326
申请日：2022-02-22
申请人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
发明人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
IPC分类号： G11B5/31 , G11B5/127 , G11B5/39 , G11B5/235 , G11B5/00
摘要： A magnetic head includes a main pole, a trailing shield, and a spin torque oscillator. A top surface of the main pole includes a first inclined portion, a second inclined portion, and a third inclined portion arranged in order of closeness to a medium facing surface. Each of the first to third inclined portions has a front end closest to the medium facing surface and a rear end farthest from the medium facing surface. Each of the first to third inclined portions is inclined relative to the medium facing surface and a direction orthogonal to the medium facing surface so that its rear end is located forward relative to its front end in a direction of travel of a recording medium.

60. 发明授权

US11289117B1 Magnetic head including spin torque oscillator 有权
公开(公告)号：US11289117B1
公开(公告)日：2022-03-29
申请号：US17170126
申请日：2021-02-08
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
IPC分类号： G11B5/23 , G11B5/115 , G11B5/39 , G11B5/00
摘要： A magnetic head includes a medium facing surface, a main pole, a trailing shield, and a spin torque oscillator. A bottom surface of the trailing shield includes a first portion that includes an end located in the medium facing surface and is in contact with the spin torque oscillator at least in part. An element height that is a dimension of the spin torque oscillator in a direction perpendicular to the medium facing surface and a writer height that is a dimension of the first portion in the direction perpendicular to the medium facing surface are different from each other.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式