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1. 发明授权

US10872624B1 Magnetic head including a return path section 有权
公开(公告)号：US10872624B1
公开(公告)日：2020-12-22
申请号：US16655473
申请日：2019-10-17
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yukinori Ikegawa
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yukinori Ikegawa
IPC分类号： G11B5/17 , G11B5/127 , G11B5/31
CPC分类号： G11B5/1278 , G11B5/17 , G11B5/315 , G11B5/3116 , G11B5/3126 , G11B5/313
摘要： A magnetic head includes a coil, a main pole, a write shield, a lower return path section, and an accommodation section. The accommodation section accommodates at least part of the return path section. A first portion of the accommodation section has a first inclined surface. A second portion of the accommodation section has a second inclined surface. A coil element of the coil has a third inclined surface opposed to the first inclined surface, and a fourth inclined surface opposed to the second inclined surface. The lower return path section includes a first inclined portion extending along the first inclined surface, and a second inclined portion extending along the second inclined surface.

2. 发明授权

US10083712B2 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：US10083712B2
公开(公告)日：2018-09-25
申请号：US15667721
申请日：2017-08-03
申请人： TECHRECO COMPANY, LIMITED
发明人： Masao Horiguchi , Ruining Gao
IPC分类号： G11B5/10 , G11B5/17 , G06K7/08 , G11B5/008 , H01F7/20 , G11B5/147 , H01F41/00 , G11B5/127 , 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.

3. 发明授权

US09792929B1 Magnetic head for perpendicular magnetic recording including a coil having an inclined surface 有权
公开(公告)号：US09792929B1
公开(公告)日：2017-10-17
申请号：US15438258
申请日：2017-02-21
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Yukinori Ikegawa , Shigeki Tanemura , Hironori Araki
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Yukinori Ikegawa , Shigeki Tanemura , Hironori Araki
IPC分类号： G11B5/17 , G11B5/31
CPC分类号： G11B5/17 , G11B5/3123 , G11B5/313
摘要： A magnetic head includes a medium facing surface, a coil, a main pole, a write shield, and a first and a second return path section. The first return path section is located on the leading side of the main pole. The coil includes a specific coil element passing through a space defined by main pole, a gap section, write shield and first return path section. The main pole has a bottom end including a first portion and a second portion, the second portion being farther from medium facing surface than is the first portion. The specific coil element has a rear end farthest from medium facing surface. The distance from medium facing surface to rear end of the specific coil element is smaller than or equal to the distance from the medium facing surface to the boundary between the first portion and the second portion.

4. 发明申请

US20170186450A1 MAGNETIC RECORDING AND REPRODUCING DEVICE 有权
公开(公告)号：US20170186450A1
公开(公告)日：2017-06-29
申请号：US15254236
申请日：2016-09-01
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Kenichiro YAMADA , Shuichi MURAKAMI , Naoyuki NARITA , Katsuhiko KOUI , Akihiko TAKEO , Mariko SHIMIZU , Hitoshi IWASAKI
IPC分类号： G11B5/127 , G11B5/17
CPC分类号： G11B5/1278 , G11B5/17 , G11B5/235 , G11B5/3133 , G11B5/314 , G11B5/3143 , G11B5/3146 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a magnetic pole, a stacked body, and a first non-magnetic layer. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the magnetic pole, and a non-magnetic intermediate layer provided between the first magnetic layer and the second magnetic layer. The first non-magnetic layer is provided between the second magnetic layer and the magnetic pole, and contacts the magnetic pole and the second magnetic layer. The first magnetic layer has a first thickness and a first saturation magnetic flux density. The second magnetic layer has a second thickness and a second saturation magnetic flux density. A second product of the second thickness and the second saturation magnetic flux density is larger than a first product of the first thickness and the first saturation magnetic flux density.

5. 发明申请

US20170011756A1 Resist Reactive Ion Etch (RIE) Process for Plating 审中-公开
标题翻译：电镀反应离子蚀刻（RIE）工艺
公开(公告)号：US20170011756A1
公开(公告)日：2017-01-12
申请号：US15222431
申请日：2016-07-28
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： G11B5/31 , G11B5/39
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。

6. 发明申请

US20160379677A1 HEAT ASSISTED MAGNETIC RECORDING WRITER HAVING INTEGRATED POLARIZATION ROTATION WAVEGUIDES 有权
标题翻译：具有集成极化旋转波形的热辅助磁记录技术
公开(公告)号：US20160379677A1
公开(公告)日：2016-12-29
申请号：US14752482
申请日：2015-06-26
申请人： Western Digital (Fremont), LLC
发明人： DEREK A. VAN ORDEN , SERGEI SOCHAVA , JIANWEI MU , GE YI
IPC分类号： G11B5/48 , G11B5/60 , G11B5/17
CPC分类号： G11B5/4866 , B29D11/00644 , G02B6/1228 , G02B6/125 , G02B6/126 , G02B6/14 , G02F1/011 , G11B5/105 , G11B5/17 , G11B5/314 , G11B5/3163 , G11B5/6082 , G11B5/6088 , G11B2005/0021 , G11B2005/0024
摘要： A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer is coupled with a laser that provides energy having a first polarization state. The HAMR writer has an air-bearing surface (ABS) configured to reside in proximity to a media during use, a plurality of waveguides, a main pole and at least one coil. The main pole writes to the media and is energized by the coil(s). The waveguides receive the energy from the laser and direct the energy toward the ABS. The waveguides include an input waveguide and an output waveguide. The input waveguide is configured to carry light having the first polarization state. The output waveguide is configured to carry light having a second polarization state different from the first polarization state. The waveguides are optically coupled and configured to transfer the energy from the first polarization state to the second polarization state.
摘要翻译：描述了一种热辅助磁记录（HAMR）写入器。 HAMR写入器与提供具有第一偏振状态的能量的激光器耦合。 HAMR写入器具有配置为在使用期间驻留在介质附近的空气轴承表面（ABS），多个波导，主极和至少一个线圈。主极写入介质并被线圈通电。波导从激光器接收能量并将能量引向ABS。波导包括输入波导和输出波导。输入波导被配置为承载具有第一偏振状态的光。输出波导被配置为承载具有不同于第一偏振状态的第二偏振状态的光。波导被光学耦合并且被配置为将能量从第一偏振状态转移到第二偏振状态。

7. 发明申请

US20160284366A1 MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING INCLUDING A WRITE SHIELD 有权
标题翻译：用于磁带记录的磁头，包括写入屏蔽
公开(公告)号：US20160284366A1
公开(公告)日：2016-09-29
申请号：US14667081
申请日：2015-03-24
申请人： TDK CORPORATION
发明人： Atsushi YAMAGUCHI , Michitaka NISHIYAMA , Kei HIRATA , Kenkichi ANAGAWA
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/17 , G11B5/187 , G11B5/23 , G11B5/232 , G11B5/315
摘要： A magnetic head includes a main pole, a write shield and a gap section. The write shield includes a trailing shield, a leading shield and two side shields. The gap section includes a trailing gap section, a leading gap section and two side gap sections. Each of the two side gap sections and the leading gap section increases in thickness with increasing distance from a medium facing surface. In the medium facing surface, the thickness of the leading gap section is greater than the width of each of the two side gap sections, and the width of each of the two side gap sections decreases with decreasing distance to the leading gap section.
摘要翻译：磁头包括主极，写屏蔽和间隙部分。写屏蔽包括后屏蔽，前屏蔽和两个侧屏蔽。间隙部分包括尾部间隙部分，前部间隙部分和两个侧面间隙部分。两个侧间隙部分和前导间隙部分中的每一个随着距离介质面向表面的距离增加而增加。在面向介质的表面中，前导间隙部分的厚度大于两个侧面间隙部分的宽度，并且两个侧面间隙部分的宽度随着与前部间隙部分的距离的减小而减小。

8. 发明授权

US09443539B2 Write head for a magnetic tape medium with magnetically encoded servo band bursts 有权
标题翻译：用磁带编码伺服带阵列的磁带介质写入磁头
公开(公告)号：US09443539B2
公开(公告)日：2016-09-13
申请号：US14791659
申请日：2015-07-06
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： G11B5/265 , G11B5/17 , G11B15/087 , G11B5/584 , G11B5/78 , G11B5/008 , G11B20/12 , 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 write head for writing a servo pattern to a magnetic tape medium includes a first coil configured to generate a first magnetic flux when applying an electric current to the first coil, a second coil configured to generate a second magnetic flux when applying an electric current to the second coil, and a pole piece structure configured to guide the generated magnetic flux. The pole piece includes a first ring structure for guiding the first magnetic flux, a second ring structure for guiding the second magnetic flux, and a common section of the first and the second ring structure which common section is arranged between the first coil and the second coil. The write head further includes a section containing a gap in each of the first ring structure and the second ring structure. The magnetic flux is oriented in opposite directions across the two gaps.
摘要翻译：用于将伺服图形写入磁带介质的写入头包括：第一线圈，被配置为当向第一线圈施加电流时产生第一磁通;第二线圈，被配置为在施加电流时产生第二磁通量第二线圈，以及构造成引导所产生的磁通量的极片结构。极片包括用于引导第一磁通的第一环结构，用于引导第二磁通的第二环结构，以及第一和第二环结构的公共部分，其中公共部分布置在第一线圈和第二磁通之间线圈写头还包括在第一环结构和第二环结构中的每一个中包含间隙的部分。磁通量沿两个间隙的相反方向取向。

9. 发明授权

US09287030B2 Multi gap inductor core 有权
标题翻译：多间隙电感芯
公开(公告)号：US09287030B2
公开(公告)日：2016-03-15
申请号：US13116699
申请日：2011-05-26
申请人： Franc Zajc
发明人： Franc Zajc
IPC分类号： H01F7/06 , H01F7/127 , H02K15/02 , H02K15/03 , H01F27/245 , H01F27/25 , H01F27/26 , H01F27/28 , H01J3/14 , G11B5/17 , H01J3/08
CPC分类号： H01F7/06 , G11B5/17 , H01F7/127 , H01F27/245 , H01F27/25 , H01F27/26 , H01F27/263 , H01F27/2828 , H01F27/2847 , H01F2027/2861 , H01J3/08 , H01J3/14 , H02K15/024 , H02K15/03 , Y10T29/4902 , Y10T29/49075 , Y10T29/49078 , Y10T29/49126
摘要： A multi-gap inductor core includes magnetic lamination sheets made of magnetic core material arranged in a stack, and fixing layers made of a fixing material. Each fixing layer is arranged between a corresponding pair of adjacent magnetic lamination sheets. Each fixing layer also includes an embedded mechanical spacer that defines a gap having a predetermined thickness between a corresponding pair of adjacent magnetic lamination sheets.
摘要翻译：多间隙电感器芯包括由堆叠形成的磁芯材料制成的磁性层压片和由固定材料制成的固定层。每个固定层布置在相应的一对相邻的磁性层压片之间。每个固定层还包括嵌入的机械间隔件，其限定了在相应的一对相邻的磁性层压片之间具有预定厚度的间隙。

10. 发明授权

US09251812B2 Magnetic head for perpendicular magnetic recording including angled side shield surfaces 有权
标题翻译：用于垂直磁记录的磁头，包括成角度的侧屏蔽表面
公开(公告)号：US09251812B2
公开(公告)日：2016-02-02
申请号：US14319681
申请日：2014-06-30
申请人： Yoshitaka Sasaki , Kazuki Sato , Hiroyuki Ito , Shigeki Tanemura , Hironori Araki , Kazumasa Yasuda
发明人： Yoshitaka Sasaki , Kazuki Sato , Hiroyuki Ito , Shigeki Tanemura , Hironori Araki , Kazumasa Yasuda
IPC分类号： G11B5/11 , G11B5/31 , G11B5/127 , G11B5/17
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/17 , G11B5/3116 , G11B5/315 , G11B5/3163 , Y10T29/49048
摘要： A first side shield has a first sidewall and a second sidewall. A second side shield has a third sidewall and a fourth sidewall. The distance between the first sidewall and the third sidewall decreases with increasing proximity to the top surface of a substrate. The second and fourth sidewalls are close to perpendicular to the top surface of the substrate. Each of the second and fourth sidewalls has an edge farthest from the top surface of the substrate, the edge being parallel to the medium facing surface. The main pole has a first, a second, a third and a fourth side surface. The first side surface is opposed to the first sidewall. A portion of the second side surface is opposed to the second sidewall. The third side surface is opposed to the third sidewall. A portion of the fourth side surface is opposed to the fourth sidewall.
摘要翻译：第一侧屏蔽件具有第一侧壁和第二侧壁。第二侧屏蔽件具有第三侧壁和第四侧壁。第一侧壁和第三侧壁之间的距离随着靠近衬底顶表面的增加而减小。第二和第四侧壁靠近垂直于基板的顶表面。第二和第四侧壁中的每一个具有距衬底顶表面最远的边缘，该边缘平行于介质面向表面。主极具有第一，第二，第三和第四侧面。第一侧表面与第一侧壁相对。第二侧表面的一部分与第二侧壁相对。第三侧面与第三侧壁相对。第四侧面的一部分与第四侧壁相对。

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