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公开(公告)号：US20210027809A1
公开(公告)日：2021-01-28
申请号：US16520629
申请日：2019-07-24
Applicant: Seagate Technology LLC
Inventor： Helene Parwana Habibi , Simon Bance , Martin Liam McGarry , Raul Horacio Andruet , Martin Giles Blaber , Weibin Chen , John Charles Duda , Mark Anthony Gubbins , Erik Jon Hutchinson , Vivek Krishnamurthy , Michael Allen Seigler , Chen Wang
IPC: G11B11/105 , G11B11/24
Abstract: A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
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公开(公告)号：US09685202B1
公开(公告)日：2017-06-20
申请号：US15002663
申请日：2016-01-21
Applicant: Seagate Technology LLC
Inventor： John Charles Duda , Scott M. Franzen , Weibin Chen , Tae-Woo Lee , Dimitar V. Dimitrov , Huaqing Yin
IPC: G11B11/00 , G11B33/14 , G11B5/012 , G11B5/187 , G11B5/127 , G11B5/00 , G11B11/105 , G11B5/31 , G11B5/60
CPC classification number: G11B33/1426 , G11B5/012 , G11B5/1272 , G11B5/187 , G11B5/3106 , G11B5/3136 , G11B5/314 , G11B5/6088 , G11B11/10532 , G11B11/10543 , G11B11/10554 , G11B2005/0021
Abstract: A near-field transducer includes an enlarged portion and a peg protruding from a first edge. The enlarged portion has a second edge facing away from the first edge. The near-field transducer includes a heat sink disposed on the enlarged portion and with an outline shape that matches that of the enlarged portion. The heat sink is disposed at a first separation distance from the first edge of the enlarged portion and a second, greater, separation distance from the second edge of the enlarged portion. The first separation distance is greater than the second separation distance.
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公开(公告)号：US11538496B2
公开(公告)日：2022-12-27
申请号：US17319444
申请日：2021-05-13
Applicant: Seagate Technology LLC
Inventor： Helene Parwana Habibi , Simon Bance , Martin Liam McGarry , Raul Horacio Andruet , Martin Giles Blaber , Weibin Chen , John Charles Duda , Mark Anthony Gubbins , Erik Jon Hutchinson , Vivek Krishnamurthy , Michael Allen Seigler , Chen Wang
Abstract: A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
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公开(公告)号：US10854224B1
公开(公告)日：2020-12-01
申请号：US16006112
申请日：2018-06-12
Applicant: Seagate Technology LLC
Inventor： John Charles Duda , Vasudevan Ramaswamy
Abstract: An apparatus comprising a slider is configured for heat-assisted magnetic recording. The slider comprises a media-facing surface. One or more reader elements are positioned in a reader region of the slider, and the one or more reader elements have an average first elevation at the media-facing surface. One or more writer elements are positioned in a writer region of the slider, and the one or more writer elements have an average second elevation at the media-facing surface. The average second elevation is less than the average first elevation.
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公开(公告)号：US09875767B2
公开(公告)日：2018-01-23
申请号：US15608349
申请日：2017-05-30
Applicant: Seagate Technology LLC
Inventor： John Charles Duda , Ruoxi Yang , James Gary Wessel
CPC classification number: G11B11/10547 , G11B5/314 , G11B5/4866 , G11B5/6052 , G11B5/607 , G11B5/6082 , G11B5/6088 , G11B11/06 , G11B11/10532 , G11B11/10543 , G11B11/12 , G11B11/14 , G11B2005/0021
Abstract: An apparatus comprises a slider having an air-bearing surface (ABS), a write pole at or near the ABS, and a reader at or near the ABS and connected to a pair of reader bond pads of the slider. A near-field transducer (NFT) is formed on the slider at or near the ABS, and an optical waveguide is formed in the slider and configured to receive light from a laser source. A sensor is situated proximal of the write pole at a location within the slider that receives at least some of the light communicated along the waveguide. The sensor may be electrically coupled to the reader bond pads in parallel with the reader, and configured to generate a signal indicative of output optical power of the laser source.
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Patent Agency Ranking
公开(公告)号：US09747937B1
公开(公告)日：2017-08-29
申请号：US15342326
申请日：2016-11-03
Applicant: Seagate Technology LLC
Inventor： John Charles Duda , Zoran Jandric
CPC classification number: G11B5/6082 , G11B5/314 , G11B5/455 , G11B5/4866 , G11B5/607 , G11B5/6076 , G11B5/6088 , G11B2005/0021
Abstract: An apparatus comprises a slider having an air bearing surface (ABS) and a near-field transducer (NFT) at or near the ABS. An optical waveguide is configured to couple light from a laser source to the NFT. A resistive sensor comprises an ABS section situated at or proximate the ABS and a distal section extending away from the ABS to a location at least lateral of or behind the NFT. The resistive sensor is configured to detect changes in output optical power of the laser source and contact between the slider and a magnetic recording medium.
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7.发明授权Waveguide cladding layer with transparent heat sink for heat-assisted magnetic recording device 有权具有透明散热片的波导覆层，用于热辅助磁记录装置公开(公告)号：US09251830B1
公开(公告)日：2016-02-02
申请号：US14716517
申请日：2015-05-19
Applicant: Seagate Technology LLC
Inventor： John Charles Duda , Seung-Yeul Yang , Manuel Charles Anaya-Dufresne , Scott Franzen , Michael Christopher Kautzky , Xiaoyue Huang
IPC: G11B11/00 , G11B5/60 , G11B5/48 , G11B13/08 , G11B5/31 , G11B7/1387 , G11B5/00 , G11B7/1384
CPC classification number: G11B5/6088 , G11B5/3133 , G11B5/314 , G11B7/1384 , G11B7/1387 , G11B13/08 , G11B2005/0021
Abstract: An apparatus comprises a slider of a magnetic recording head having an air bearing surface (ABS), a write pole terminating at or near the ABS, and a near-field transducer (NFT) adjacent the write pole. A light delivery arrangement extends through the slider and terminates at the ABS. The light delivery arrangement is configured to communicate light through the slider and to the NFT. A transparent heat sink layer abuts a terminal end portion of the light delivery arrangement and terminates at the ABS. The heat sink layer has a thermal conductivity greater than that of the light delivery arrangement.
Abstract translation: 一种装置包括具有空气轴承表面（ABS）的磁记录头的滑块，在ABS附近或其附近终止的写极以及与写极相邻的近场换能器（NFT）。 光输送装置延伸穿过滑块并终止于ABS。 光输送装置被配置为通过滑块和NFT传送光。 透明散热层邻接光输送装置的终端部分并终止于ABS。 散热层的导热率大于光输送装置的导热率。
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公开(公告)号：US12094491B2
公开(公告)日：2024-09-17
申请号：US18081527
申请日：2022-12-14
Applicant: Seagate Technology LLC
Inventor： Helene Parwana Habibi , Simon Bance , Martin Liam McGarry , Raul Horacio Andruet , Martin Giles Blaber , Weibin Chen , John Charles Duda , Mark Anthony Gubbins , Erik Jon Hutchinson , Vivek Krishnamurthy , Michael Allen Seigler , Chen Wang
CPC classification number: G11B11/10536 , G11B5/187 , G11B5/3106 , G11B5/3116 , G11B5/3133 , G11B5/3136 , G11B5/314 , G11B5/40 , G11B11/24 , G11B13/08 , G11B2005/0021
Abstract: A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
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公开(公告)号：US20230110250A1
公开(公告)日：2023-04-13
申请号：US18081527
申请日：2022-12-14
Applicant: Seagate Technology LLC
Inventor： Helene Parwana Habibi , Simon Bance , Martin Liam McGarry , Raul Horacio Andruet , Martin Giles Blaber , Weibin Chen , John Charles Duda , Mark Anthony Gubbins , Erik Jon Hutchinson , Vivek Krishnamurthy , Michael Allen Seigler , Chen Wang
Abstract: A recording head comprises a write pole extending to an air-bearing surface. A near-field transducer is positioned proximate a first side of the write pole in a down-track direction. A heatsink structure is proximate the near-field transducer and positioned between the near-field transducer and the write pole. The heatsink structure extends beyond the near-field transducer in a cross-track direction and extends in a direction normal to the air-bearing surface.
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公开(公告)号：US10410669B1
公开(公告)日：2019-09-10
申请号：US16170462
申请日：2018-10-25
Applicant: Seagate Technology LLC
Inventor： James Gary Wessel , Jon Karsten Klarqvist , John Charles Duda
Abstract: A slider configured for heat-assisted magnetic recording comprises an optical sensor coupled to first and second bond pads. The optical sensor comprises a bolometer and a reference sensor. The bolometer is situated at a location of the slider that receives at least some of the light and exposed to an ambient temperature at the slider. The bolometer produces a signal in response to a change in the ambient temperature and the change in output optical power. The reference sensor is situated at a location of the slider unexposed to the light and exposed to the ambient temperature. The reference sensor is coupled to the bolometer and configured to produce a signal in response to the change in the ambient temperature. The optical sensor is configured to generate a sensor signal indicative of changes in output optical power of a laser source without contribution due to ambient temperature changes.
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