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11. 发明授权

US10170138B2 Tape apparatus having an array of write transducers each having at least three layers of coils 有权
公开(公告)号：US10170138B2
公开(公告)日：2019-01-01
申请号：US15476835
申请日：2017-03-31
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Robert E. Fontana, Jr. , Calvin S. Lo
IPC分类号： G11B5/17 , G11B5/008 , G11B5/265 , G11B5/23 , G11B5/187 , G11B5/31
摘要： A magnetic recording tape writing apparatus includes an array of write transducers extending along a common tape bearing surface. Each of the write transducers has a lower pole having a lower pole tip, a lower coil layer above the lower pole, an intermediate coil layer above the lower coil layer, and an upper coil layer above the intermediate coil layer. An upper pole is positioned above the upper coil layer, the upper pole having an upper pole tip. In one embodiment, a nonmagnetic write gap is positioned between the pole tips, a plane of deposition of the write gap extending between the intermediate coil layer and the lower coil layer. In another embodiment, a nonmagnetic write gap is positioned between the pole tips, a plane of deposition of the write gap extending between the intermediate coil layer and the upper coil layer.

12. 发明授权

US10134428B1 Selective data writer coil 有权
公开(公告)号：US10134428B1
公开(公告)日：2018-11-20
申请号：US15797668
申请日：2017-10-30
申请人： Seagate Technology LLC
发明人： Kirill A. Rivkin , JianHua Xue , Wei Tian , Lei Lu , Jian Zhong
IPC分类号： G11B5/09 , G11B5/17 , G11B5/31
摘要： A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.

13. 发明授权

US09875757B1 Adjusting track width to compensate for offset writing of a track 有权
公开(公告)号：US09875757B1
公开(公告)日：2018-01-23
申请号：US15347111
申请日：2016-11-09
申请人： Seagate Technology LLC
发明人： Xiong Liu , Quan Li
IPC分类号： G11B5/09 , G11B5/17 , G11B20/12
CPC分类号： G11B5/09 , G11B5/17 , G11B20/10481 , G11B2020/1238
摘要： An offset from track center of a writer that is writing to a track of a magnetic recording medium is determined. A write current applied to a write coil of the writer is adjusted to compensate for the offset. The adjusting of the write current affects a width of the track.

14. 发明授权

US09830943B2 Magnetic tape medium servo pattern writing method using single coil multi-gap write head 有权
公开(公告)号：US09830943B2
公开(公告)日：2017-11-28
申请号：US15264358
申请日：2016-09-13
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Giovanni Cherubini , Johan B. C. Engelen , Simeon Furrer , Mark A. Lantz
IPC分类号： G11B20/12 , G11B5/265 , G11B5/17 , G11B15/087 , G11B5/584 , G11B5/78 , G11B5/008 , G11B5/592
CPC分类号： G11B20/1201 , G11B5/00813 , G11B5/00817 , G11B5/00826 , G11B5/17 , G11B5/265 , G11B5/584 , G11B5/5928 , G11B15/087 , G11B2220/956
摘要： A method for writing a servo pattern to a magnetic tape medium includes orienting a magnetic flux in opposite directions across gaps in the magnetic tape medium, and moving the magnetic tape medium with its servo band above two gaps in a direction along a longitudinal extension of the magnetic tape medium. The magnetic tape medium includes a servo band along the longitudinal extension of the magnetic tape medium and a servo pattern organized in a servo frame with a first burst having at least two servo stripes, and a second burst having at least two servo stripes. For at least one of the first and second bursts, different stripes within a same burst have opposite magnetic polarities with respect to one another. The method further includes applying a current pulse to the coil, moving the magnetic tape medium, and applying another current pulse to the coil.

15. 发明授权

US09797047B2 Copper plating method 有权
公开(公告)号：US09797047B2
公开(公告)日：2017-10-24
申请号：US14821953
申请日：2015-08-10
申请人： Headway Technologies, Inc.
发明人： Chao-Peng Chen , Jas Chudasama , Chien-Li Lin , David Wagner
IPC分类号： C23F1/12 , C23C14/58 , C23C2/02 , C25D5/02 , G11B5/17 , C25D5/34
CPC分类号： C23F1/12 , C23C2/02 , C23C14/5873 , C25D5/022 , C25D5/34 , G11B5/17
摘要： A method of removing copper oxide from copper surfaces is disclosed that comprises application of vapor generated by an ultrasonic wave nebulizer. The energized vapor droplets include water and a weak organic acid such as acetic acid, lactic acid, citric acid, uric acid, oxalic acid, or formic acid that have a vapor pressure proximate to that of water. The weak organic acid preferably has a pKa high enough to avoid Cu etching but is sufficiently acidic to remove copper oxide at a rate that is compatible with high throughput manufacturing. In one embodiment, weak acid/water vapor is applied to a substrate in a spin bowl and is followed by a deionized water rinse step in the same spin bowl. Improved wettability results in improved uniformity in subsequently plated copper films. Considerable cost savings is realized as a result of reduced chemical consumption and higher product yields.

16. 发明授权

US09761251B2 Method for manufacturing magnetic core module in magnetic head, magnetic core module in magnetic head and magnetic head 有权
公开(公告)号：US09761251B2
公开(公告)日：2017-09-12
申请号：US14647565
申请日：2013-11-26
申请人： TECHRECO COMPANY, LIMITED
发明人： Masao Horiguchi , Ruining Gao
IPC分类号： G11B5/127 , G11B5/17 , G06K7/08 , G11B5/008 , H01F7/20 , G11B5/147 , H01F41/00 , H01F7/06
CPC分类号： G11B5/17 , G06K7/082 , G06K7/083 , G06K7/084 , G11B5/00808 , G11B5/1272 , G11B5/1475 , H01F7/20 , H01F41/005 , H01F2007/062
摘要： A method for manufacturing a magnetic core module in a magnetic head, the magnetic core module and the magnetic head. The method for manufacturing the magnetic core module includes: a process for placing a magnetic core group in a holder mold cavity as an insert; and a process for injection-molding in the holder mold cavity. A method for manufacturing the magnetic core module allows the magnetic core group and the holder to be integrally injection-molded with a method of injection molding which uses the magnetic core group as an insert. The method simplifies the process of manufacturing a magnetic head to improve production efficiency, and saves labor and production costs. Further, the method prevents failures such as positional displacement and scattering of magnetic cores, which tends to occur when assembling thin and small magnetic cores, and ensures an ideal yield for a product.

17. 发明申请

US20170249960A1 MAGNETIC RECORDING HEAD AND DISK DEVICE COMPRISING THE SAME 有权
公开(公告)号：US20170249960A1
公开(公告)日：2017-08-31
申请号：US15267438
申请日：2016-09-16
申请人： Kabushiki Kaisha Toshiba
发明人： Tomoko Taguchi , Tomomi Funayama
IPC分类号： G11B5/39 , G11B5/127 , G11B5/17 , G11B5/60
CPC分类号： G11B5/3909 , G11B5/1278 , G11B5/17 , G11B5/235 , G11B5/3146 , G11B5/6082 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic core including a main magnetic pole and a write shield arranged to face the main magnetic pole with a write gap, a coil, and a high-frequency oscillator provided between the main magnetic pole and the write shield in the write gap. The magnetic core includes an opposite surface facing a film surface of the high-frequency oscillator, a magnetic layer, and a nonmagnetic layer in which magnetic microparticles are dispersed. The nonmagnetic layer is provided outside the magnetic layer in at least a part of the opposite surface of the magnetic core.

18. 发明授权

US09412397B1 Method of forming a magnetic write head 有权
标题翻译：形成磁写头的方法
公开(公告)号：US09412397B1
公开(公告)日：2016-08-09
申请号：US14608586
申请日：2015-01-29
申请人： Headway Technologies, Inc.
发明人： Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Seiichiro Tomita , Kazuki Sato , Hideo Mamiya
IPC分类号： G11B5/127 , H04R31/00 , G11B5/17 , G11B5/00
CPC分类号： G11B5/3123 , G11B5/17 , G11B5/3906 , G11B2005/0021
摘要： A magnetic write head has a plated coil with narrow pitch and is suitable for writing at high frequencies on magnetic media with high coercivity. The narrow pitch is obtained without such disadvantages as overplating that has adversely affected prior art attempts to produce such narrow pitches. The process that produces the magnetic write head is characterized by an RIE plasma etch using O2/N2 to etch plating trenches into a baked layer of photoresist with the ratio of gases being 5/45 sccm so that a dilute O2 concentration does not create unwanted side etching of the plating trenches. In addition, a Cu seed layer is coated with an insulating layer of Al2O3 which redeposits on the trench sidewalls to inhibit redeposition of any Cu from the seed layer and prevent outward growth of the plated Cu that would result in overplating.
摘要翻译：磁写头具有窄间距的电镀线圈，适用于高矫顽磁性介质的高频写入。获得窄的间距没有诸如对现有技术尝试产生这种窄间距产生不利影响的过度镀敷的缺点。产生磁写头的过程的特征在于使用O 2 / N 2的RIE等离子体蚀刻将电镀沟槽蚀刻成光致抗蚀剂的烘烤层，其中气体比例为5/45sccm，使得稀的O 2浓度不会产生不期望的侧面蚀刻电镀槽。此外，Cu籽晶层涂覆有Al 2 O 3的绝缘层，其重新沉积在沟槽侧壁上以抑制任何Cu从种子层的再沉积，并防止导致过镀的镀覆Cu的向外生长。

19. 发明申请

US20160210994A1 THERMALLY-ASSISTED MAGNETIC RECORDING HEAD INCLUDING A MAIN POLE AND A PLASMON GENERATOR 有权
标题翻译：热辅助磁记录头，包括一个主点和一个等离子发生器
公开(公告)号：US20160210994A1
公开(公告)日：2016-07-21
申请号：US14600460
申请日：2015-01-20
申请人： Yoshitaka SASAKI , Hiroyuki ITO , Shigeki TANEMURA , Hideo MAMIYA , Hironori ARAKI , Seiichiro TOMITA
发明人： Yoshitaka SASAKI , Hiroyuki ITO , Shigeki TANEMURA , Hideo MAMIYA , Hironori ARAKI , Seiichiro TOMITA
IPC分类号： G11B7/1387 , G11B5/48 , G11B5/127 , G11B5/17
CPC分类号： G11B5/314 , G11B5/012 , G11B5/127 , G11B5/1272 , G11B5/6088 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a main pole and a plasmon generator. The main pole has a front end face located in the medium facing surface. The plasmon generator has a near-field light generating surface located in the medium facing surface. The front end face of the main pole includes a first end face portion and a second end face portion. The second end face portion is located farther from the near-field light generating surface than is the first end face portion, and is greater than the first end face portion in width in the track width direction. The first end face portion and the near-field light generating surface are equal in width.
摘要翻译：热辅助磁记录头包括主极和等离子体发生器。主杆具有位于介质面对表面中的前端面。等离子体发生器具有位于介质面对表面中的近场光产生表面。主极的前端面包括第一端面部分和第二端面部分。所述第二端面部位于比所述第一端面部远离所述近场光产生面的位置，并且比所述第一端面部宽度大于所述轨道宽度方向。第一端面部分和近场光产生表面的宽度相等。

20. 发明授权

US09368133B2 Unbalanced data writer coil 有权
公开(公告)号：US09368133B2
公开(公告)日：2016-06-14
申请号：US14800919
申请日：2015-07-16
申请人： Seagate Technology LLC
发明人： Kirill Rivkin , Mourad Benakli , Huaqing Yin
IPC分类号： G11B5/17 , G11B5/127 , G11B5/31 , G11B5/60
CPC分类号： G11B5/17 , G11B5/1278 , G11B5/3116 , G11B5/3123 , G11B5/6082
摘要： A data writer may be configured with at least a write pole and a continuous coil with the continuous coil having a first turn with a first cross-sectional shape and a second turn with a second cross-sectional shape that differs from the first cross-sectional shape. The second turn may be positioned proximal a leading edge of the write pole and an air bearing surface while the first turn is positioned distal the air bearing surface.

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