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公开(公告)号：US11646053B2
公开(公告)日：2023-05-09
申请号：US17355590
申请日：2021-06-23
Applicant: Western Digital Technologies, Inc.
Inventor： David J. Seagle , Alexander Goncharov , Robert G. Biskeborn
CPC classification number: G11B5/3967 , G11B5/00817 , G11B5/23 , G11B5/265 , G11B5/29 , G11B5/3958 , G11B5/4893 , G11B5/11 , G11B15/46
Abstract: The present disclosure generally relates to a tape drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a plurality of write transducer and read transducer pairs disposed on a substrate. In each pair, the write transducer comprises a write pole having a height, and the read transducer comprises a first shield disposed adjacent to the write pole. The write pole and the first shield of each pair are spaced apart a distance greater than or equal to about 20% of the height of the write pole. The SGV module is configured to write data to a tape using the write transducer of each pair and read verify the data written on the tape using the read transducer of each pair such that the write transducer and read transducer of each pair are concurrently operable.
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2.发明申请公开(公告)号：US20180286436A1
公开(公告)日：2018-10-04
申请号：US15476835
申请日：2017-03-31
Applicant: International Business Machines Corporation
Inventor： Robert G. Biskeborn , Robert E. Fontana, JR. , Calvin S. Lo
CPC classification number: G11B5/00817 , G11B5/17 , G11B5/187 , G11B5/23 , G11B5/2652 , G11B5/313 , G11B2220/95
Abstract: 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.
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公开(公告)号：US09997177B2
公开(公告)日：2018-06-12
申请号：US15698958
申请日：2017-09-08
Applicant: Western Digital (Fremont), LLC
Inventor： Yu Pan , Yugang Wang , Zhigang Bai , Tao Lin , Peng Zhao
CPC classification number: G11B5/3116 , G11B5/112 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/232 , G11B5/315
Abstract: A magnetic write apparatus has a media-facing surface (MFS), a pole, a write gap, a top shield and coil(s). The pole includes a yoke and a pole tip. The pole tip includes a bottom, a top wider than the bottom and first and second sides. The pole tip has a height between the top and the bottom. At least part of the top of the pole tip is convex in a cross-track direction between the first and second sides such that the height at the MFS is larger between the first and second sides than at the first and second sides. The height increases in a yoke direction perpendicular to the MFS. The write gap is adjacent to and conformal with the top of the pole at the MFS and is between part of the top shield and the pole. The top shield is concave at the MFS.
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公开(公告)号：US20180082708A1
公开(公告)日：2018-03-22
申请号：US15796353
申请日：2017-10-27
Applicant: International Business Machines Corporation
Inventor： Robert G. Biskeborn , Edwin R. Childers , Mark A. Lantz
CPC classification number: G11B5/3116 , G11B5/23 , G11B5/584
Abstract: An apparatus according to one embodiment includes a first module having a plurality of first write transducers, and a plurality of second modules each having a second write transducer. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers.
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公开(公告)号：US20180075868A1
公开(公告)日：2018-03-15
申请号：US15445822
申请日：2017-02-28
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Katsuhiko KOUI , Kenichiro YAMADA , Tomoko TAGUCHI
CPC classification number: G11B5/3912 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/235 , G11B5/3116 , G11B5/3146 , G11B2005/0024
Abstract: A magnetic recording head includes a main magnetic pole extending to an air bearing surface of the magnetic recording head and having an end portion that is exposed at the air bearing surface, a magnetic shield having an end portion that is exposed at the air bearing surface and faces the end portion of the main magnetic pole with a gap therebetween, a stacked-layer element disposed in the gap, and including a first conductive layer in contact the main magnetic pole, a second conductive layer in contact with the magnetic shield, and an magnetic permeability adjusting layer disposed between the first conductive layer and the second conductive layer, and first and second terminals between which a current flows through the main magnetic pole, the stacked-layer element, and the magnetic shield when the current is supplied to one of the terminals.
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Patent Agency Ranking
公开(公告)号：US20180033458A1
公开(公告)日：2018-02-01
申请号：US15727953
申请日：2017-10-09
Applicant: Western Digital Technologies, Inc.
Inventor： Kuok San HO , Suping SONG , Petrus Antonius Van Der Heijden
IPC: G11B5/60
CPC classification number: G11B5/60 , G11B5/1278 , G11B5/23 , G11B5/3116 , G11B5/315
Abstract: A system, according to one embodiment, includes: a main pole; and a trailing shield. A first distance D1 is defined in a track direction between the trailing shield and a pole tip region of the main pole; and a second distance D2 is defined in the track direction between the trailing shield and a second region of the main pole located behind the pole tip region, where D2 is greater than D1. Other systems, and methods are described in additional embodiments.
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公开(公告)号：US09852747B1
公开(公告)日：2017-12-26
申请号：US15273483
申请日：2016-09-22
Applicant: International Business Machines Corporation
Inventor： Robert G. Biskeborn , Edwin R. Childers , Mark A. Lantz
CPC classification number: G11B5/3116 , G11B5/23 , G11B5/584
Abstract: An apparatus according to one embodiment includes a first module having a plurality of first write transducers, and a plurality of second modules each having a second write transducer. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers. An apparatus according to another embodiment includes a plurality of first modules each having a first write transducer, and a plurality of second modules each having a second write transducer. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers.
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公开(公告)号：US09767831B1
公开(公告)日：2017-09-19
申请号：US14956168
申请日：2015-12-01
Applicant: Western Digital (Fremont), LLC
Inventor： Yu Pan , Yugang Wang , Zhigang Bai , Tao Lin , Peng Zhao
CPC classification number: G11B5/3116 , G11B5/112 , G11B5/1278 , G11B5/1871 , G11B5/23 , G11B5/232 , G11B5/315
Abstract: A magnetic write apparatus has a media-facing surface (MFS), a pole, a write gap, a top shield and coil(s). The pole includes a yoke and a pole tip. The pole tip includes a bottom, a top wider than the bottom and first and second sides. The pole tip has a height between the top and the bottom. At least part of the top of the pole tip is convex in a cross-track direction between the first and second sides such that the height at the MFS is larger between the first and second sides than at the first and second sides. The height increases in a yoke direction perpendicular to the MFS. The write gap is adjacent to and conformal with the top of the pole at the MFS and is between part of the top shield and the pole. The top shield is concave at the MFS.
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公开(公告)号：US09595273B1
公开(公告)日：2017-03-14
申请号：US14871763
申请日：2015-09-30
Applicant: Western Digital (Fremont), LLC
Inventor： Feng Liu , Zhigang Bai , Jinqiu Zhang , Zhanjie Li , Yi Wang
CPC classification number: G11B5/115 , G11B5/1278 , G11B5/23 , G11B5/3116 , G11B5/315 , G11B5/6082
Abstract: A shingle magnetic write apparatus is described. The shingle magnetic write apparatus includes a pole, a side gap, a write gap, a top shield and side shield(s). The pole has a pole tip region including a top wider than a bottom, and sides. The sides are at a sidewall angle from a down track direction. The write gap is adjacent to the pole top and between the top shield and the pole top. The side shield(s) are magnetically connected with the top shield and extend past the bottom of the pole. The side gap is between the side shield(s) and the pole. The side shield(s) have pole-facing surface(s) not more than a side shield angle from the down track direction. The side shield angle is less than the sidewall angle. The side gap width increases from the top near the gap to the bottom near the bottom of the pole.
Abstract translation: 描述了一种木瓦磁性写入装置。 木瓦磁性写入装置包括极，侧间隙，写间隙，顶屏蔽和侧屏蔽。 极具有包括顶部宽于底部的顶端区域和侧面。 侧面处于从向下方向的侧壁角度。 写入间隙与极顶相邻并且在顶部屏蔽和极顶之间。 侧面屏蔽层与顶部屏蔽层磁性连接，并延伸穿过极板的底部。 侧面间隙位于侧面屏蔽和极板之间。 侧护罩具有不大于沿着下轨道方向的侧屏蔽角的极面对面。 侧面屏蔽角小于侧壁角度。 侧间隙宽度从顶部附近的间隙增加到靠近极底部的底部。
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公开(公告)号：US20170004850A1
公开(公告)日：2017-01-05
申请号：US15265041
申请日：2016-09-14
Applicant: Kabushiki Kaisha Toshiba
Inventor： Masayuki TAKAGISHI , Kenichiro YAMADA , Tomoyuki MAEDA , Katsuya SUGAWARA
CPC classification number: G11B5/3146 , G11B5/012 , G11B5/11 , G11B5/1278 , G11B5/23 , G11B5/3116 , G11B5/315
Abstract: According to one embodiment, a magnetic recording head includes a magnetic pole and a shield. The shield has a first opposing surface opposing the magnetic pole. The first opposing surface includes a first opposing portion. The magnetic pole and the first opposing portion overlap in a first direction from the magnetic pole toward the shield. The first opposing portion includes a first protrusion.
Abstract translation: 根据一个实施例，磁记录头包括磁极和屏蔽。 屏蔽件具有与磁极相对的第一相对表面。 第一相对表面包括第一相对部分。 磁极和第一相对部分在从磁极朝向屏蔽的第一方向上重叠。 第一相对部分包括第一突起。
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