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公开(公告)号：US09978405B1
公开(公告)日：2018-05-22
申请号：US15444518
申请日：2017-02-28
IPC分类号： G11B11/00 , G11B5/31 , G11B5/00 , G11B5/60 , G11B7/1267 , G11B7/1263 , G11B7/127
CPC分类号： G11B5/314 , G11B5/6005 , G11B5/6011 , G11B5/607 , G11B5/6076 , G11B5/6088 , G11B7/1263 , G11B7/1267 , G11B7/127 , G11B2005/0021
摘要： A slider configured for heat-assisted magnetic recording comprises an air bearing surface (ABS), a writer, and a close point of the writer. A plurality of heat producing or dissipating components are situated a predetermined distance from a vertical plane that is normal to the ABS and aligned with the close point. A location of the writer close point remains substantially consistent irrespective of which of the plurality of heat producing or dissipating components are energized.
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公开(公告)号：US09947358B1
公开(公告)日：2018-04-17
申请号：US15678427
申请日：2017-08-16
发明人： Yuhang Cheng , Scott Franzen , Zoran Jandric , James Gary Wessel , Ning Shi
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/314 , G11B5/4826 , G11B2005/0021
摘要： An apparatus comprises a slider having a trailing edge and a leading edge. A laser diode unit comprises a submount and a laser diode mounted to the submount. The submount includes a mounting surface affixed to a first surface of the slider at the trailing edge such that a first surface of the submount faces toward the leading edge of the slider. A thermally conductive material covers the first surface of the submount and at least a portion of the first surface of the slider. The thermally conductive material serves as a thermal conduction pathway between the submount and the slider.
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公开(公告)号：US09940959B1
公开(公告)日：2018-04-10
申请号：US15615399
申请日：2017-06-06
IPC分类号： G11B11/00 , G11B5/60 , G11B5/00 , G11B7/1263 , G11B11/105 , G11B7/126
CPC分类号： G11B5/4555 , G11B5/607 , G11B5/6088 , G11B7/126 , G11B7/1263 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： A method and apparatus are directed to providing relative movement between a slider configured for heat-assisted magnetic recording and a magnetic recording medium, and causing protrusion of a portion of an air bearing surface (ABS) of the slider in response to activating at least a laser source while maintaining spacing between the protrusion and the medium. A magnitude of at least a portion of the protrusion is measured while maintaining spacing between the protrusion and the medium.
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公开(公告)号：US09928859B2
公开(公告)日：2018-03-27
申请号：US15481866
申请日：2017-04-07
CPC分类号： G11B5/3163 , G11B5/1272 , G11B5/3133 , G11B5/314 , G11B5/3169 , G11B5/4866 , G11B5/6005 , G11B5/6088 , G11B2005/0021
摘要： Methods of forming a NFT the methods including forming a hard mask positioned over at least a portion of the rod, the hard mask including at least one layer; patterning a resist mask over the hard mask, the resist mask having an edge positioned over at least a portion of the rod; etching a portion of the hard mask to expose a back edge of the rod and to form a back edge of the hard mask, wherein the back edge of the rod is equivalent to the back edge of the peg; and wherein a forward portion of the rod which is the portion of the rod forward of the back edge is covered by the hard mask; forming a disc mask including a void configured to form a disc of a NFT, the disc mask being formed over at least a portion of the hard mask so that the exposed back edge of the rod is within the void configured to form the disc; etching an area exposed in the void of the disc mask to remove both a rear portion of the rod and the surrounding dielectric up to the back edge of the hard mask edge; depositing a disc material in the etched void, wherein the back edge of the hard mask defines the front edge of the disc and the back edge of the rod is in contact with the front edge of the disc; and polishing the deposited disc material to form a top surface substantially planar with the top of the forward rod portion.
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公开(公告)号：US09916849B1
公开(公告)日：2018-03-13
申请号：US15347129
申请日：2016-11-09
发明人： Drew Michael Mader , Tim Rausch , James E. Angelo
IPC分类号： G11B11/00 , G11B7/1263 , G11B7/126 , G11B5/00 , G11B5/60 , G11B11/105 , G11B7/1267
CPC分类号： G11B7/126 , G11B5/012 , G11B5/6088 , G11B7/1267 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： An optical power level applied via a laser when recording data to a track of a heat-assisted recording medium is determined. In response to the optical power level being too low or too high, remedial action is taken to prevent loss of data on one or more of the track and an adjacent track.
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16.发明授权公开(公告)号：US09916847B1
公开(公告)日：2018-03-13
申请号：US15153103
申请日：2016-05-12
发明人： Steven Douglas Granz , Michael Thomas Johnson , Patrick Carl Fletcher , Manuel Charles Anaya-Dufresne , Peng Peng
IPC分类号： G11B11/00 , G11B5/455 , G11B5/00 , G11B7/1263 , G11B11/105 , G11B5/60 , G11B7/1267 , G11B7/126
CPC分类号： G11B5/455 , G11B5/6088 , G11B7/126 , G11B7/1263 , G11B7/1267 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： An apparatus comprises a thermal sensor configured to interact with a magnetic recording disk. A head-disk interface is defined between the thermal sensor and the disk. A power supply is coupled to the thermal sensor and configured to supply a bias power to the thermal sensor between a low power and a high power. A processor is coupled to the thermal sensor and configured to determine a slope of a resistance response of the thermal sensor. The processor is further configured to detect a change in the slope relative to a baseline slope. The slope change indicates increased heat sinking between the thermal sensor and the disk due to the presence of contaminant buildup at the head-disk interface.
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公开(公告)号：US09911441B1
公开(公告)日：2018-03-06
申请号：US15381015
申请日：2016-12-15
发明人： Zoran Jandric , Martin Blaber , Chubing Peng , John Charles Duda
IPC分类号： G11B11/00 , G11B5/48 , G11B5/00 , G11B11/105 , G11B7/126
CPC分类号： G11B5/314 , G11B7/126 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： A solid-immersion mirror has two reflective portions surrounding a focal region. A thermal sensor that senses temperature as a function of resistance is proximate at least one of the two reflective portions of the solid-immersion mirror. A near-field transducer is located proximate the focal region of the solid-immersion mirror. The near-field transducer directs optical energy to a magnetic recording medium.
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公开(公告)号：US20180033460A1
公开(公告)日：2018-02-01
申请号：US15729531
申请日：2017-10-10
CPC分类号： G11B20/1252 , B82Y20/00 , G02B6/12007 , G11B5/743 , G11B7/0045 , G11B11/002 , G11B20/10
摘要： Data can be encoded in physical medium and represented by shapes having many various physical attributes. In various examples, data points are encoded and represented by the physical shape, color, size, and/or structure of objects. In one embodiment, holes in memory surface substrates represent data. Various attributes of such holes, including depth, profile size, profile shape, and/or angle can represent data.
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公开(公告)号：US09875761B1
公开(公告)日：2018-01-23
申请号：US15601041
申请日：2017-05-22
CPC分类号： G11B5/4866 , G02B3/0087 , G02B6/32 , G02B6/4212 , G11B2005/0021
摘要： A gradient-index lens couples light from a laser active region to a waveguide core. The gradient-index lens includes a plurality of bilayers, each of the bilayers having first and second material of respective first and second refractive indices. The bilayers conform to a planar base of the gradient-index lens and further conform to input and output sidewalls of the gradient-index lens. The input sidewall faces the laser active region and the output sidewall faces away from the laser active region. The input and output sidewalls are tilted at respective acute angles relative to the planar base.
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20.发明授权公开(公告)号：US09865296B1
公开(公告)日：2018-01-09
申请号：US15263679
申请日：2016-09-13
发明人： Tze Pin Chin , Tanghe Guo , Feng Shen
IPC分类号： G11B11/00 , G11B7/1267 , G11B5/55 , G11B7/1263 , G11B20/18 , G11B5/00 , G11B7/126
CPC分类号： G11B5/5521 , G11B7/126 , G11B20/10481 , G11B2005/0021
摘要： A storage device performs a background operation involving seeking a read/write head between inner and outer diameters of a disk of the storage device. During the seeking, adjacent test tracks are written at a diameter between the inner and outer diameters of the disk. The adjacent test tracks are written using varying levels of laser power applied to the disk via the read/write head. An optimum value of the laser power is determined based on reading at least one of the adjacent test tracks.
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