公开(公告)号：US09058829B1

公开(公告)日：2015-06-16

申请号：US14097435

申请日：2013-12-05

Applicant: Seagate Technology LLC

Inventor： John Wolf ,  Erik Hutchinson

IPC: G11B21/02 ,  G11B5/127 ,  G11B5/60 ,  G11B5/31

CPC classification number: G11B5/607 ,  G11B5/3133 ,  G11B5/3951 ,  G11B5/4886 ,  G11B5/60 ,  G11B5/6005 ,  G11B5/6064

Abstract: A apparatus includes first and second read transducers arranged on a media-facing surface. The read transducers detect magnetic fields of a recording medium. First and second heaters are disposed proximate the respective first and second read transducers. The first and second heaters independently control respective first and second protrusions of the first and second read transducers from the media-facing surface.

Abstract translation: 一种装置包括布置在面向媒体的表面上的第一和第二读取换能器。 读取换能器检测记录介质的磁场。 第一和第二加热器设置在相应的第一和第二读取换能器附近。 第一和第二加热器独立地从面向介质的表面控制第一和第二读取换能器的相应的第一和第二突起。

公开(公告)号：US11120830B1

公开(公告)日：2021-09-14

申请号：US16943115

申请日：2020-07-30

Applicant: Seagate Technology LLC

Inventor： Aidan Dominic Goggin ,  Mark Anthony Gubbins ,  Paula Frances McElhinney ,  Roger L. Hipwell, Jr. ,  John Wolf

IPC: G11B11/00 ,  G11B11/105 ,  G11B5/00

Abstract: A recording head includes a substrate, a read transducer, a waveguide core, and a near-field transducer at an end of the waveguide core proximate a media-facing surface. The recording head includes a magnetic write pole and coil. A laser diode unit with one or more non-self-supporting layers of crystalline material region is transfer printed between layers of the recording head.

公开(公告)号：US09934807B2

公开(公告)日：2018-04-03

申请号：US15196549

申请日：2016-06-29

Applicant: Seagate Technology LLC

Inventor： Declan Macken ,  Paul Sonda ,  Erik Hutchinson ,  Jin Fang ,  John Wolf

IPC: G11B5/60 ,  G11B5/31 ,  G11B5/024

CPC classification number: G11B5/6076 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/4853 ,  G11B5/4886 ,  G11B5/6011 ,  G11B5/607

Abstract: A magnetic recording head includes a plurality of writers and at least one reader. The plurality of writers and the reader define a plurality of close points of the head. The plurality of writers are spaced apart from one another in a cross-track direction and positioned in the same plane of the head. A plurality of contact sensors are positioned proximate the plurality of writers and the reader. The contact sensors are coupled together and to a pair of electrical bond pads of the head and configured to sense for head-disk contact at each of the close points.

公开(公告)号：US20180040344A1

公开(公告)日：2018-02-08

申请号：US15227319

申请日：2016-08-03

Applicant: Seagate Technology LLC

Inventor： Erik J. Hutchinson ,  John Wolf

IPC: G11B5/60 ,  G11B5/48

CPC classification number: G11B5/6082 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1387 ,  G11B2005/0021

Abstract: An apparatus includes an apparatus comprising a slider. The slider comprises a substrate comprising a media-facing surface, a first side surface perpendicular to the media-facing surface, and a second side surface opposite the first side surface. A heat sink layer is formed proximate to and thermally coupled to the first side surface of the substrate. A write transducer comprises a waveguide core that at least partially extends from the top surface to the media-facing surface. The waveguide core is formed proximate to and thermally coupled to the heat sink layer. A read transducer is formed proximate to the write transducer such that the read transducer is closer to a trailing edge of the slider than the write transducer.

公开(公告)号：US08947807B2

公开(公告)日：2015-02-03

申请号：US13722724

申请日：2012-12-20

Applicant: Seagate Technology LLC

Inventor： Kevin Richard Heim ,  Kirill A. Rivkin ,  Eric Meloche ,  John Wolf

IPC: G11B5/09 ,  G11B5/127 ,  G11B5/012 ,  G11B5/02 ,  G11B5/31

CPC classification number: G11B5/012 ,  G11B5/02 ,  G11B5/3123

Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.

Abstract translation: 具有两个单独驱动的写入线圈的写入器组件允许由写入器组件生成的组合写入字段对于特定应用进行精细转换和优化。 为了单独驱动写入线圈，可以将两个前置放大器并入到印刷电路板中。 在其他实现中，可以存在多于两个的写入线圈和相应的前置放大器。