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公开(公告)号：US08873199B2
公开(公告)日：2014-10-28
申请号：US14216636
申请日：2014-03-17
Applicant: Seagate Technology LLC
Inventor： Eric Roger Meolche , Chris Rea , Jianhua Xue , Eric Linville , John M. Wolf
CPC classification number: G11B5/17 , G11B5/3113 , G11B5/3116 , G11B5/3123 , G11B5/313
Abstract: A recording head comprising a write pole and a coil structure asymmetric with respect to the write pole and configured to generate more magnetic flux on a trailing side of the main pole than the magnetic flux on a front side of the main pole.
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公开(公告)号：US20140268416A1
公开(公告)日：2014-09-18
申请号：US14216636
申请日：2014-03-17
Applicant: Seagate Technology LLC
Inventor： Eric Roger Meloche , Chris Rea , Jianhua Xue , Eric Linville , John M. Wolf
IPC: G11B5/17
CPC classification number: G11B5/17 , G11B5/3113 , G11B5/3116 , G11B5/3123 , G11B5/313
Abstract: A recording head comprising a write pole and a coil structure asymmetric with respect to the write pole and configured to generate more magnetic flux on a trailing side of the main pole than the magnetic flux on a front side of the main pole.
Abstract translation: 一种记录头，包括相对于写极不对称的写极点和线圈结构，并被配置为在主极的前侧上产生比在主极的前侧上的磁通量更大的磁通量。
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公开(公告)号：US08830626B2
公开(公告)日：2014-09-09
申请号：US13692471
申请日：2012-12-03
Applicant: Seagate Technology LLC
Inventor： Kevin Heim , Jianhua Xue , Huaqing Yin
CPC classification number: G11B5/1278 , G11B5/3116 , G11B5/315
Abstract: A magnetic element may be generally configured as a data writer constructed at least with a write pole positioned within and separated from a box shield by a write gap. The box shield may be configured to maintain at least a separation distance from a first side of a leading edge of the write pole to an opposite second side of the leading edge.
Abstract translation: 通常将磁性元件配置为数据写入器，至少写入写入磁极位于盒屏蔽内并由写入间隙分离。 盒式屏蔽可以被配置为保持与写入极的前缘的第一侧至前缘的相对的第二侧的至少间隔距离。
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公开(公告)号：US20130280556A1
公开(公告)日：2013-10-24
申请号：US13919983
申请日：2013-06-17
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Li Tang , Weilu Xu , Youfeng Zheng , Shanghsien Rou , Connie Chunling Liu , Jianhua Xue , Li-Lien Lee , Thomas P. Nolan
CPC classification number: G11B5/3153 , G11B5/1276 , G11B5/1278 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/7325 , Y10T428/115
Abstract: Provided herein, is an apparatus that includes a nonmagnetic substrate having a surface; and a plurality of overlying thin film layers forming a layer stack on the substrate surface. The layer stack includes a magnetically hard perpendicular magnetic recording layer structure and an underlying soft magnetic underlayer (SUL), wherein the sum of a magnetic thickness of the layer stack is a magnetic thickness of up to about 2 memu/cm̂2.
Abstract translation: 本文提供了一种包括具有表面的非磁性基板的装置; 以及在衬底表面上形成层叠的多个上覆薄膜层。 层叠层包括磁性硬的垂直磁记录层结构和底层软磁性底层（SUL），其中层叠层的磁性厚度之和是至多约2emu / cm 2的磁性厚度。
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公开(公告)号：US10770096B1
公开(公告)日：2020-09-08
申请号：US16273778
申请日：2019-02-12
Applicant: Seagate Technology LLC
Inventor： Wei Tian , Javier Guzman , Jianhua Xue , Kirill Rivkin , Jian Zhong , Lei Lu
Abstract: A recording head includes a bearing surface, a first writer and a first shield structure for the first writer. The recording head also includes a second writer and a second shield structure for the second writer. The recording head further includes a magnetic bridge connecting the first shield structure to the second shield structure at the bearing surface.
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Patent Agency Ranking
16.发明授权公开(公告)号：US10210891B1
公开(公告)日：2019-02-19
申请号：US15411085
申请日：2017-01-20
Applicant: Seagate Technology LLC
Inventor： Wei Tian , Jianhua Xue , Wenzhong Zhu , Ralph W. Cross , Javier Guzman
Abstract: A storage device includes a storage medium and a transducer head with two writers positioned to write to a same surface of the storage medium. The two writers are separated from one another along a down-track direction of a data track on the storage medium and independently controllable to write data.
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公开(公告)号：US09928881B1
公开(公告)日：2018-03-27
申请号：US15711790
申请日：2017-09-21
Applicant: Seagate Technology LLC
Inventor： Zhe Shen , Zuxuan Lin , Lei Lu , Jianhua Xue
CPC classification number: G11B27/36 , G11B5/012 , G11B5/455 , G11B5/4555 , G11B5/5552 , G11B20/10009 , G11B20/10481 , G11B20/10509 , G11B2005/0013
Abstract: A method of testing a dynamic write field of a recording head includes preparing a test magnetic medium and recording a write signal on the test magnetic medium with the write signal being set at a first write parameter and a second write parameter. An average of multiple read-back signals of the recorded write signal are captured to determine an average amplitude of the read-back signals. The recording of the write signal on the test magnetic medium and the capturing of the average of multiple read-back signals of the recorded write signal are repeated to determine the average amplitude of the read-back signals by fixing the first write parameter of the write signal and changing the second write parameter of the write signal until the average amplitude of the read-back signals saturates.
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公开(公告)号：US09805744B1
公开(公告)日：2017-10-31
申请号：US15088752
申请日：2016-04-01
Applicant: Seagate Technology LLC
Inventor： Jianhua Xue , Jian Zhong , Lei Lu , Yan Dong , Kirill Rivkin
CPC classification number: G11B5/3116 , G11B5/012 , G11B5/1278 , G11B5/23 , G11B5/29 , G11B5/315 , G11B5/4886
Abstract: The disclosed technology includes a storage device including an interlaced magnetic recording (IMR) system, and a transducer head, including two writers, each writer including a write pole, wherein a width of a first write pole in a cross-track direction is substantially greater than a width of a second write pole in the cross-track direction, and wherein a down-track width of a front shield gap of the first write pole is substantially similar to down-track width of a front shield gap of the second write pole. In another implementation, the storage device includes an IMR system, and a transducer head, including two writers, each writer including a write pole, wherein a width of the first write pole in a cross-track direction is substantially greater than a width of a second write pole in a cross-track direction, and wherein a cross-track width of a side shield gap of the first write pole is substantially similar to a cross-track width of a side shield gap of the second write pole.
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公开(公告)号：US09218825B2
公开(公告)日：2015-12-22
申请号：US14052337
申请日：2013-10-11
Applicant: Seagate Technology LLC
Inventor： Jianhua Xue , Zhe Shen , Christopher James Rea , Eric Roger Meloche , Huaqing Yin
CPC classification number: G11B5/1278 , G11B5/11 , G11B5/1871 , G11B5/3116 , G11B5/315 , G11B5/3163 , G11B5/6082
Abstract: A magnetic element may be generally configured with at least a write pole that has leading and trailing regions on an air bearing surface. The leading region may have a trailing width connected to a leading width of the trailing region via a transition feature to form a substantially T-shaped cross-section on the air bearing surface.
Abstract translation: 磁性元件可以通常配置有至少一个在空气轴承表面上具有前部和后部区域的写入极。 引导区域可以具有经由过渡特征连接到尾部区域的前导宽度的拖尾宽度，以在空气轴承表面上形成基本上T形的横截面。
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公开(公告)号：US09218824B2
公开(公告)日：2015-12-22
申请号：US14479850
申请日：2014-09-08
Applicant: Seagate Technology LLC
Inventor： Eric Shane Linville , Jianhua Xue , Eric Roger Meloche , Huaqing Yin , Yonghua Chen
CPC classification number: G11B5/11 , G11B5/127 , G11B5/1278 , G11B5/3116 , G11B5/315
Abstract: A data writer may be generally configured at least with a write pole that has a pole sidewall and a continuous first taper angle connecting leading and trailing edges. The write pole can be positioned adjacent to a side shield that is configured with first and second shield sidewalls tapered to a shield tip that is the closest point between the write pole and side shield.
Abstract translation: 数据写入器可以至少一般配置有具有极侧壁的写极和连接前缘和后缘的连续的第一锥角。 写入极可以定位成与侧屏蔽相邻，该侧屏蔽配置有逐渐变细到作为写极和侧屏蔽之间最靠近的屏蔽尖端的第一和第二屏蔽侧壁。
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