Head Surface Structure Patents (Class 360/122)
  • Patent number: 10957347
    Abstract: An apparatus, in accordance with one embodiment, includes a write transducer having a pair of writer poles having pole tips, the pole tips defining a write gap therebetween. A thin film device is positioned at least in part in the write gap for raising a local temperature of the write gap. Electrical connections for causing a current to pass through the thin film device are also present. A method, in accordance with one embodiment, includes passing a current through a thin film device positioned at least in part in a write gap defined between pole tips of writer poles of a write transducer for causing heating of the thin film device. A level of the current is changed in response to detection of a predefined condition.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: March 23, 2021
    Assignee: International Business Machines Corporation
    Inventors: Robert Biskeborn, Hugo E. Rothuizen, David Seagle
  • Patent number: 10902868
    Abstract: Provided are a tape head module, tape drive, and method for moving a tape medium over a tape head having a recessed portion to provide air bearing between a tape medium and a tape bearing surface of the module. The tape head includes a tape bearing surface, an array of transducers, including read and/or write transducers, on the tape bearing surface, and a recessed portion formed on the tape bearing surface, wherein the array of transducers is located on the tape bearing surface between the recessed portion and an end of the module to perform read and/or write operations with respect to the tape medium.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: January 26, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Robert G. Biskeborn, Calvin S. Lo
  • Patent number: 10796721
    Abstract: A data storage device may be configured with a transducing head mounted to a slider. The slider may be suspended above a magnetic data storage medium and have a variable depth region, central rail wall, first wall, and trailing edge wall. The variable depth region continuously contacting a central rail wall from a first wall to a trailing edge wall.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: October 6, 2020
    Assignee: Seagate Technology LLC
    Inventors: Abhik Rakshit, Jiaxi Lu
  • Patent number: 10737291
    Abstract: The present disclosure includes methods of forming air bearing surfaces having multi-tier structures using nanoimprint technology and/or 3D printing technology. In some embodiments, a single stage of milling can be used to transfer a multi-tier photoresist pattern into a substrate (e.g., an AlTiC substrate).
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: August 11, 2020
    Assignee: Seagate Technology LLC
    Inventors: Daniel Richard Buettner, Andrew David Habermas, Daniel Sullivan, Joseph M. Stephan
  • Patent number: 10715024
    Abstract: An electricity generating device including a magnet array; and an inductive body having one or more metal wires. The inductive body and the magnet array are movable relative to each other and a magnet mounting structure, on which the magnet array is mounted. The inductive body is fixed to the magnet mounting structure. The electricity generating device has a simple structure, is easy to manufacture, achieves high efficiency of electricity generation, and is easy to carry.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: July 14, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hong Wang
  • Patent number: 10657992
    Abstract: An apparatus, according to one embodiment, includes: a plurality of tunnel valve read transducers arranged in an array extending along a read module. Each of the tunnel valve read transducers includes: a sensor structure having a cap layer, a free layer, a tunnel barrier layer, a reference layer and an antiferromagnetic layer, and electrically insulating layers on opposite sides of the sensor structure. Moreover, a height of the free layer measured in a direction perpendicular to a media bearing surface of the read module is less than a width of the free layer measured in a cross-track direction perpendicular to an intended direction of media travel.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 19, 2020
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Robert E. Fontana, Jr., Calvin S. Lo
  • Patent number: 10643653
    Abstract: In one embodiment, a method includes determining a distance from a to an edge closest thereto and selecting a wrap angle based on the determined distance for inducing tenting of a moving magnetic recording tape in a region above the transducer whereby a resulting tent of the moving tape extends from the edge closest thereto to a minima with a tent apex therebetween. In response to a determination to move the tape over the tape bearing surface, the method includes moving the tape over the tape bearing surface, and checking for changes in the tenting characteristics. In response to determining changes are present, the method includes sequentially selecting a different wrap angle based on the determined distance for inducing a desired tenting characteristic, and checking for changes in the tenting characteristics. Moreover, the method includes selecting a final wrap angle in response to determining no significant changes are present.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 5, 2020
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, W. Stanley Czarnecki, Calvin S. Lo
  • Patent number: 10607639
    Abstract: A method according to one embodiment includes forming a wear-resistant in-situ film on a magnetic read transducer having a sensor with magnetic shields. The in-situ film including material derived from a flexible medium. The material is formed on the transducer by passing the flexible medium over the transducer at an elevated temperature.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: March 31, 2020
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Jason Liang
  • Patent number: 10600433
    Abstract: Some embodiments are directed to computer program products for use with tape drives that oscillate the relative transverse position of a tape and magnetic head during seek operations (for example, by moving the magnetic head in the transverse direction). Some embodiments are directed to methods and computer program products for use with tape drives that select relative transverse position of the tape and magnetic head to counter uneven wear (for example, observed uneven wear, uneven wear predicted based on historical tape and drive usage data).
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: March 24, 2020
    Assignee: International Business Machines Corporation
    Inventors: Marcus Breuer, Bernd Freitag, Frank Krick, Tim Oswald
  • Patent number: 10458031
    Abstract: An aspect of the present invention provides an Fe—Ni alloy metal foil having excellent heat resilience, where the Fe—Ni alloy metal foil is prepared by an electroforming (EF) method and has a thickness of 100 ?m or less (except O ?m), wherein the Fe—Ni alloy metal foil comprises, by wt %, Ni: 34-46 %, a remainder of Fe and inevitable impurities, and wherein the Fe—Ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 29, 2019
    Assignee: POSCO
    Inventors: Gwan-Ho Jung, Jin-You Kim, Moo-Jin Kim, Jae-Kon Lee, Jun-Hak Park, Jae-Hwa Hong
  • Patent number: 10424325
    Abstract: According to one embodiment, a magnetic head includes a first magnetic layer, a second magnetic layer, an intermediate layer, a magnetic pole, a first terminal, and a second terminal. The second magnetic layer is separated from the first magnetic layer in a first direction. The intermediate layer is provided between the first magnetic layer and the second magnetic layer. A second direction from the first magnetic layer toward the magnetic pole crosses the first direction. The first terminal is electrically connected to the intermediate layer. The second terminal is electrically connected to the second magnetic layer.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 24, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirofumi Suto, Kiwamu Kudo, Tazumi Nagasawa, Taro Kanao, Rie Sato, Koichi Mizushima
  • Patent number: 10403424
    Abstract: An integrated magnetic device has a magnetic core which includes layers of the magnetic material located in a trench in a dielectric layer. The magnetic material layers are flat and parallel to a bottom of the trench, and do not extend upward along sides of the trench. The integrated magnetic device is formed by forming layers of the magnetic material over the dielectric layer and extending into the trench. A protective layer is formed over the magnetic material layers. The magnetic material layers are removed from over the dielectric layer, leaving the magnetic material layers and a portion of the protective layer in the trench. The magnetic material layers along sides of the trench are subsequently removed. The magnetic material layers along the bottom of the trench provide the magnetic core.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: September 3, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Fuchao Wang, Yousong Zhang, Neal Thomas Murphy, Brian Zinn, Jonathan P. Davis
  • Patent number: 10395674
    Abstract: According to one embodiment, a method includes determining a first distance from a sensor to a first edge closest thereto, where the sensor is positioned between a lower shield and the first edge, selecting a first wrap angle based on the first distance for inducing tenting of a moving magnetic recording tape in a region above the sensor, determining a second distance from a second edge to the sensor, and selecting a second wrap angle based on the determined second distance for affecting or not affecting the tenting of a moving magnetic recording tape in the region above the sensor.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 27, 2019
    Assignee: International Business Machines Corporation
    Inventor: Robert G. Biskeborn
  • Patent number: 10395677
    Abstract: Some embodiments are directed to computer program products for use with tape drives that oscillate the relative transverse position of a tape and magnetic head during seek operations (for example, by moving the magnetic head in the transverse direction). Some embodiments are directed to methods and computer program products for use with tape drives that select relative transverse position of the tape and magnetic head to counter uneven wear (for example, observed uneven wear, uneven wear predicted based on historical tape and drive usage data).
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: August 27, 2019
    Assignee: International Business Machines Corporation
    Inventors: Marcus Breuer, Bernd Freitag, Frank Krick, Tim Oswald
  • Patent number: 10170143
    Abstract: A unidirectional and bi-directional tape head with sub-ambient pressure cavities. The tape head is adapted for reading and/or writing to a magnetic tape. The tape head includes: a tape-bearing surface; a transducer area, having at least one transducer designed for reading and/or writing to the magnetic tape; a cavity open on the tape-bearing surface adjacent to the transducer area that extends parallel to the transducer area and transversally to the longitudinal direction of circulation of the tape such that an opening of the cavity faces the tape in operation; and one or more air bleed slots connected to the cavity. The cavity is further dimensioned and arranged with respect to the transducer area to create, upon circulation of the tape in operation, sub-ambient pressure therein.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: January 1, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Johan B. C. Engelen, Mark A. Lantz, Hugo E. Rothuizen
  • Patent number: 10127934
    Abstract: A computer-implemented method for detecting sensor-damaging tape media, according to one embodiment, includes acquiring a metric for at least one sensor of a tape drive after performing an operation on a magnetic recording tape, and comparing the metric for the at least one sensor after performing the operation to a metric for the at least one sensor acquired before performing the operation. An action is taken in response to a result of the comparing indicating that a difference between the metrics is in a predetermined range. A product, according to one embodiment, includes a magnetic recording tape, and a memory coupled to the magnetic recording tape. At least one value is stored in the memory, the at least one value being indicative of whether the magnetic recording tape is potentially sensor-damaging.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 13, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Ho-Yiu Lam, Jason Liang
  • Patent number: 10115416
    Abstract: A magnetic write apparatus has a media-facing surface (MFS) and includes an auxiliary pole, coil(s) and a main pole having a pole tip and a yoke. The pole tip occupies part of the MFS. The yoke has a yoke length measured from the MFS in a yoke direction perpendicular to the MFS. The yoke length is less than four microns. The main pole has a total length in the yoke direction and a width in a cross-track direction. The main pole is continuous along the total length. The aspect ratio of the main pole is the total length divided by the width and exceeds one. The main pole includes surface(s) having a nonzero acute flare angle from the MFS. The auxiliary pole is adjacent to the main pole and recessed from the MFS by not more than 1.05 micron. The coil(s) energizes the main pole and have not more than two turns.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: October 30, 2018
    Assignee: Western Digital (Fremont), LLC
    Inventors: Feng Liu, Zhigang Bai, Peng Luo, Jinqiu Zhang, Ming Sun, Xiaoyu Yang, Yifan Zhang, Xiaojun Zhang, Ming Jiang
  • Patent number: 10109310
    Abstract: An apparatus according to one embodiment includes a module having a tape bearing surface, an array of magnetic transducers, and a channel in the tape bearing surface. The channel has a longitudinal axis oriented about parallel to a longitudinal axis of the array of magnetic transducers for inducing tenting of a moving magnetic recording tape above the array of magnetic transducers. A method according to one embodiment includes forming a channel in a tape bearing surface of a module. The channel is formed to have a longitudinal axis about parallel to a longitudinal axis of an array of magnetic transducers. The channel is formed proximate to the array of magnetic transducers for inducing tenting of a moving magnetic recording tape above the array of magnetic transducers.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: October 23, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Calvin S. Lo
  • Patent number: 10074388
    Abstract: An apparatus according to one embodiment includes a magnetic read transducer comprised of a sensing portion and proximate magnetic shields, and a wear-resistant in-situ film on a media-facing side of the read transducer. The in-situ film is comprised of material derived from a flexible medium. The in-situ film is primarily above the read transducer. A method according to one embodiment includes forming a wear-resistant in-situ film on a magnetic read transducer having a sensor with magnetic shields. The in-situ film including material derived from a flexible medium. The material is formed on the transducer by passing the flexible medium over the transducer at an elevated temperature.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: September 11, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Jason Liang
  • Patent number: 10068591
    Abstract: An apparatus according to one embodiment includes a module having a tape bearing surface, a magnetic transducer in a thin film region, and an edge closest to the transducers. A guide is positioned relative to the edge for inducing tenting of a moving magnetic recording tape above a tape tenting region of the tape bearing surface. The magnetic transducer is positioned along the tape tenting region.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: September 4, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Jason Liang, Calvin S. Lo
  • Patent number: 10049690
    Abstract: A method of forming a read head. The method includes forming first and second read sensors that are substantially trapezoidal in shape. A first read measurement is performed on a storage medium using the first read sensor. A second read measurement is performed on the storage medium using the second read sensor. Based on a comparison of the first and second read measurements to a predetermined quantity, either the first read sensor or the second read sensor is selected to be operational in a data storage device.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: August 14, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Victor Sapozhnikov, Taras Grigorievich Pokhil, Mohammed Shariat Ullah Patwari
  • Patent number: 10014010
    Abstract: An apparatus according to one embodiment includes a substrate having a media bearing surface, and a first shield above the substrate. The first shield has a media facing side recessed from a plane extending along the media bearing surface of the substrate. A current-perpendicular-to-plane sensor is located above the substrate, the sensor having a media facing side recessed from the plane extending along the media bearing surface of the substrate. An electrically nonconductive first film is positioned on the media facing sides of the first shield and sensor. A second film is positioned on a media facing side of the first film, the second film comprising a refractory metal.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: July 3, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Calvin S. Lo, Andrew C. Ting
  • Patent number: 9874510
    Abstract: A magnetic chip device such as a chip detector or chip collector, comprising a horseshoe magnet held within a housing and having two adjacent tips protruding from the housing, and having a plurality of portions extending sequentially from one of the tips to the other, the plurality of portions including two end portions, each one of the two end portions extending to a corresponding one of the tips, and a rare-earth magnet portion made of a rare earth magnet material and positioned between the two end portions in the sequence.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: January 23, 2018
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Richard Kudrna
  • Patent number: 9865284
    Abstract: Disclosed herein are processes to manufacture sliders having extended three-dimensional air-bearing surfaces and non-transitory computer-readable storage media storing machine-executable instructions to cause at least one processor to perform the processes. A disclosed method of manufacturing a slider for use in a hard disk drive comprises removing a first portion of material from a wafer, the first portion of material comprising substrate, and, using an additive fabrication technique, forming at least a portion of a feature of the slider in a first location formerly occupied by at least some of the first portion of material. The additive fabrication technique may comprise three-dimensional printing, stereo lithography, fused deposition modeling, selective laser sintering, or multi jet modeling. Also disclosed are sliders manufactured using the disclosed methods of manufacture and disk drives comprising such sliders.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: January 9, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventor: Weidong Huang
  • Patent number: 9837104
    Abstract: An apparatus according to one embodiment includes a module having a tape bearing surface, a first edge, and a second edge. A sensor is located in a thin film region of the module. The sensor has a free layer. A distance from the first edge to the free layer is less than a distance from the second edge to the free layer. A method according to another embodiment includes detecting a distance between a free layer of a sensor and an edge closest thereto. The free layer is positioned between an upper shield and the edge. A wrap angle is selected based on the detected distance for inducing tenting of a magnetic recording tape in a region above the free layer when the magnetic recording tape moves over the module.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: December 5, 2017
    Assignee: International Business Machines Corporation
    Inventor: Robert G. Biskeborn
  • Patent number: 9824700
    Abstract: A manufacturing method for a magnetic head forms a leading shield having a top surface. The top surface of the leading shield includes first and second portions. The second portion is located farther from a medium facing surface than is the first portion, and recessed from the first portion. A first gap layer is then formed on the first portion. Then, a magnetic layer including an initial first side shield, an initial second side shield and a coupling section connecting them is formed using a mold. The mold is then removed. The coupling section is then removed by etching the magnetic layer. A second gap layer and a main pole are then formed in this order.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 21, 2017
    Assignee: TDK CORPORATION
    Inventors: Hiroki Aritomo, Atsushi Yamaguchi, Michitaka Nishiyama, Yumiko Yokoyama, Koichi Otani
  • Patent number: 9758873
    Abstract: A manufacturing method for a magnetic recording medium which includes a magnetic layer, a lower protective layer, an upper protective layer and a lubricating layer on a substrate, and in which the total film thickness of the lower protective layer and the upper protective layer is 2.5 nm or less, includes: 1) depositing the lower protective layer; 2) performing oxygen plasma treatment on the lower protective layer; 3) depositing the upper protective layer; and 4) performing nitrogen plasma treatment on the upper protective layer. It is preferable that the lower protective layer and the upper protective layer are formed of a carbon-based material, and it is further more preferable that the lower protective layer and the upper protective layer are formed of diamond-like carbon. Moreover, it is preferable that the contact angle of the lower protective layer with respect to water in the atmosphere is 25° or less.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: September 12, 2017
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Narumi Sato, Akiyasu Kumagai, Tomonori Katano, Katsumi Taniguchi, Hiromi Ono
  • Patent number: 9747932
    Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic core including a main magnetic pole and a write shield arranged to face the main magnetic pole with a write gap, a coil, and a high-frequency oscillator provided between the main magnetic pole and the write shield in the write gap. The magnetic core includes an opposite surface facing a film surface of the high-frequency oscillator, a magnetic layer, and a nonmagnetic layer in which magnetic microparticles are dispersed. The nonmagnetic layer is provided outside the magnetic layer in at least a part of the opposite surface of the magnetic core.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: August 29, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoko Taguchi, Tomomi Funayama
  • Patent number: 9734854
    Abstract: A unidirectional and bi-directional tape head with sub-ambient pressure cavities. The tape head is adapted for reading and/or writing to a magnetic tape. The tape head includes: a tape-bearing surface; a transducer area, having at least one transducer designed for reading and/or writing to the magnetic tape; and a cavity open on the tape-bearing surface adjacent to the transducer area that extends parallel to the transducer area and transversally to the longitudinal direction of circulation of the tape such that an opening of the cavity faces the tape in operation. The cavity is further dimensioned and arranged with respect to the transducer area to create, upon circulation of the tape in operation, sub-ambient pressure therein. The present invention allows for a very close tape-head spacing.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: August 15, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Johan B. C. Engelen, Mark A. Lantz, Hugo E. Rothuizen
  • Patent number: 9666212
    Abstract: A writer includes a leading edge, a trailing edge, a longitudinal axis defined between the leading and trailing edges, and a transverse axis orthogonal to the longitudinal axis. A writer region is provided at a protruded section of the trailing edge oriented along the longitudinal axis. A write pole is arranged at the protruded section to write data to two locations spaced apart from one another relative to the transverse axis for a range of skew angles.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 30, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Xifeng Han, Jason Bryce Gadbois, Kaizhong Gao, Arkajyoti Misra, Harry Sam Edelman
  • Patent number: 9613658
    Abstract: A cleaning head and methods for removing contaminants from a data storage media, the cleaning head having a cleaning surface comprising a self-assembled monolayer, with the cleaning surface leading a read/write transducer. The self-assembled monolayer is selected to have a terminal functional group that has a high affinity to the contaminant(s) desired to be attracted and/or removed.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: April 4, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Vincent Engelkes, David Ellison, Timothy Stoebe
  • Patent number: 9595275
    Abstract: A method of removing a magnetic domain from a slider structure, such as a shield of a write head, in a storage assembly having a storage media. The method includes passing the slider structure in close proximity to a region on the storage media having a magnetic field sufficiently large to remove a magnetic domain in the slider structure.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 14, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Yanzhang Liu, Kirill Rivkin, Lei Lu, Huaqing Yin
  • Patent number: 9595272
    Abstract: Embodiments disclosed herein provide magnetic media access heads with metal coatings. In a particular embodiment, a magnetic media head for accessing magnetic media comprises a base substrate configured to support a magnetic head layer. The magnetic head layer is formed on the base substrate and configured to magnetically access the magnetic media. A metallic layer formed over the magnetic head layer and disposed between the magnetic head layer and the magnetic media when the magnetic media is positioned for access by the magnetic head layer.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: March 14, 2017
    Assignee: Quantum Corporation
    Inventor: Richard Henry Dee
  • Patent number: 9478243
    Abstract: The magnetic recording medium for a heat-assisted recording system has a magnetic recording layer on a non-magnetic substrate and a protective layer on top of the magnetic recording layer. The protective layer includes a first lower protective layer on top of the magnetic recording layer, a first upper protective layer on the first lower protective layer, and a second protective layer on the first upper protective layer. The first lower protective layer is composed mainly of an element selected from the group consisting of Si, Al and Cu, and the first upper protective layer is a layer configured by an oxide of the material of the first lower protective layer.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: October 25, 2016
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Narumi Sato, Akiyasu Kumagai, Tomonori Katano, Katsumi Taniguchi
  • Patent number: 9449620
    Abstract: An apparatus according to one embodiment includes a module having first and second transducers of different transducer types positioned towards a media facing side of the module, where the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers. The apparatus also includes a first protection structure for protecting the first transducer. The second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure. In one embodiment, the first protection structure includes a coating on the media facing side of the module adjacent the first transducer. In another embodiment, the first protection structure is a recessed portion of the media facing side adjacent the first transducer.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: September 20, 2016
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, W. Stanley Czarnecki, Philipp Herget, Calvin S. Lo
  • Patent number: 9330686
    Abstract: In one general embodiment, an apparatus includes a magnetic head. The magnetic head has a first portion and a second portion, the first portion and the second portion together providing a tape bearing surface. The first portion has two pieces defining an opening at least partially encircling the second portion. The second portion has at least one array of transducers. A longitudinal axis of each of the at least one array is defined between opposite ends thereof, and is oriented at an angle relative to a line oriented orthogonally to the intended direction of tape travel thereacross, the angle being between 0.2° and about 10°. A closest distance between tape bearing surfaces of the two pieces of the first portion in the intended direction of tape travel is less than a widest width of the tape bearing surface of the second portion in the intended direction of tape travel.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: May 3, 2016
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Calvin S. Lo
  • Patent number: 9299365
    Abstract: In one general embodiment, an apparatus includes a magnetic head. The magnetic head has a first portion and a second portion, the first portion and the second portion together providing a tape bearing surface. The first portion has two pieces flanking the second portion in an intended direction of tape travel thereacross. The second portion has at least one array of transducers. A longitudinal axis of each of the at least one array is defined between opposite ends thereof. The longitudinal axis of each of the at least one array of transducers is oriented at an angle relative to the line oriented orthogonally to the intended direction of tape travel thereacross, the angle being between 0.2° and about 10°.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 29, 2016
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Calvin S. Lo
  • Patent number: 9286917
    Abstract: A write pole may be formed by first depositing a dielectric layer onto a substrate and then patterning the dielectric layer to form a trench with a write pole shape. The trench is subsequently filled with the evaporation deposition of a magnetic material to form a write pole. The trench may have a greater depth dimension than width dimension.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: March 15, 2016
    Assignee: Seagate Technology LLC
    Inventors: Venkateswara R. Inturi, Aly A. Bazama, Yong Luo, Joseph M. Mundenar
  • Patent number: 9234292
    Abstract: A nickel-iron alloy plating solution which can suppress, in a nickel-iron alloy plating solution containing divalent iron ions and divalent nickel ions, oxidation of divalent iron ions to trivalent iron ions and can prevent the occurrence of the precipitation of iron (III) hydroxide to allow stable continuous operation and also to provide a nickel-iron alloy plating solution which allows production of a soft magnetic film which is stable in composition. The nickel-iron alloy plating solution of the present invention is characterized in that it comprises divalent iron ions, divalent nickel ions and a hydroxylamine salt and has a pH of 3.0 or lower.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: January 12, 2016
    Assignee: JX NIPPON MINING & METALS CORPORATION
    Inventors: Masaomi Murakami, Junnosuke Sekiguchi
  • Patent number: 9153256
    Abstract: A slider, having a leading edge, a trailing edge, a working surface, and read/write heads proximate the trailing edge. The slider includes a protective overcoat over the working surface of the slider, and a self-assembled monolayer coating on the working surface of the slider and over the protective overcoat, the coating comprising at least one self-assembled monolayer material.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: October 6, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Ajaykumar Rajasekharan, David J. Ellison, Qian Guo
  • Patent number: 9153259
    Abstract: Embodiments disclosed herein provide magnetic media access heads with metal coatings. In a particular embodiment, a magnetic media head for accessing magnetic media comprises a base substrate configured to support a magnetic head layer. The magnetic head layer is formed on the base substrate and configured to magnetically access the magnetic media. A metallic layer formed over the magnetic head layer and disposed between the magnetic head layer and the magnetic media when the magnetic media is positioned for access by the magnetic head layer.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: October 6, 2015
    Assignee: Quantum Corporation
    Inventor: Richard Henry Dee
  • Patent number: 9087536
    Abstract: According to one embodiment, a magnetic recording head includes a medium-facing surface, a near-field transducer partially exposed in the medium-facing surface, and a magnetic pole including a distal end surface and a pole end surface facing the near-field transducer. The pole end surface in the medium-facing surface is asymmetric with respect to a central axis passing through a center of the near-field transducer and extending in a longitudinal direction of the medium-facing surface.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 21, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yuichi Yamada
  • Patent number: 9058830
    Abstract: A bar mask for row bar processing includes at least a slider cover and at least a groove cover arranged adjacent to the slider cover. The groove cover is transparent, and the slider cover is opaque. The slider cover has two extending portions and an ABS portion arranged therebetween with some transparent patterns formed on the ABS portion. The ABS portion covers a single row bar, and the two extending portions each cover a row bar adjacent to the single row bar.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: June 16, 2015
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Bing Ma, Weirong Shen, Chuanyu Mo
  • Patent number: 9036297
    Abstract: A magnetic head according to one embodiment includes a module, the module having first and second transducers of different transducer types positioned towards a media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: May 19, 2015
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, W. Stanley Czarnecki, Philipp Herget, Calvin S. Lo
  • Patent number: 9030773
    Abstract: An apparatus includes a near-field transducer at or near an air bearing surface of the apparatus. A write pole is disposed at or near the air bearing surface and proximate the near-field transducer, respectively. A thermal sensor is disposed at the air bearing surface and within a protrusion region of the air bearing surface defined relative to at least one of the near-field transducer and the write pole. The thermal sensor is configured to produce a signal indicative of a temperature at the protrusion region.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 12, 2015
    Assignee: Seagate Technology LLC
    Inventors: Declan Macken, James Dillon Kiely, Manuel Charles Anaya-Dufresne
  • Patent number: 9015927
    Abstract: A method for fabricating a synthetic antiferromagnetic device, includes depositing a reference layer on a first tantalum layer and including depositing a first cobalt iron boron layer, depositing a second cobalt iron boron layer on the first cobalt iron boron layer, depositing a second Ta layer on the second cobalt iron boron layer, depositing a magnesium oxide spacer layer on the reference layer and depositing a cap layer on the magnesium oxide spacer layer.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: April 28, 2015
    Assignee: International Business Machines Corporation
    Inventors: David W. Abraham, Michael C. Gaidis
  • Publication number: 20150103439
    Abstract: A magnetic element can have at least a write pole configured with a write pole tip that has a tip surface oriented at a first angle with respect to an air bearing surface (ABS), a first bevel surface extending from the ABS and oriented at a second angle with respect to the ABS, and a second bevel surface extending from the ABS and oriented at a third angle with respect to the ABS. The first, second, and third angles may be configured to be different and non-orthogonal to each other.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: Seagate Technology LLC
    Inventors: Huaqing Yin, Wei Tian, Zhe Shen, Kirill Rivkin, Jianhua Xue
  • Patent number: 9001464
    Abstract: A read/write head is provided with a body having a body length and a support surface to support data storage media as the data storage media is conveyed longitudinally across the support surface. The support surface of the body is curved about an axis in a widthwise direction of the elongate body. The support surface of the body has a reduced longitudinal length relative to the body length only in an intermediate region. At least one read/write device is provided on the intermediate region of the support surface of the body to read and/or write data on the data storage media as the data storage media is conveyed across the support surface. A tape drive system is provided with the read/write head, the at least one read/write device, and a motor to drive the data storage tape.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: April 7, 2015
    Assignee: Oracle International Corporation
    Inventors: Anand V. Lakshmikumaran, Joseph E. Torline
  • Patent number: 9001463
    Abstract: A magnetic head according to one embodiment includes a module, the module having both read and write transducers positioned towards a media facing side of the module, wherein the read and write transducers are selected from a group consisting of piggyback read-write transducers, merged read-write transducers, interleaved read and write transducers, and an array of write transducers flanked by servo read transducers; wherein the write transducers include write poles having media facing sides with negative, zero or near-zero recession from a plane extending along the media facing side of a substrate of the module; wherein the read transducers each have at least one shield, wherein a media facing side of the at least one shield is more recessed from the plane than the write poles.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: April 7, 2015
    Assignee: International Business Machines Corporaton
    Inventors: Robert G. Biskeborn, Jason Liang, Calvin S. Lo, Andrew C. Ting
  • Patent number: RE46121
    Abstract: According to one embodiment, a bearing surface of the head slider includes a leading step at the inflow end portion, a skirt portion at the inflow end portion, a leading pad on the leading step and including a junction extending to the skirt portion, first groove surfaces individually on the opposite sides of the junction and being continuous with a downstream central portion of the skirt portion, second groove surfaces on an upstream side of the first groove surfaces and formed deeper than the first groove surfaces, and negative-pressure grooves individually on the transversely opposite sides of the first groove surfaces between the second groove surfaces and the skirt portion and formed deeper than the second groove surfaces.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: August 23, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Mitsunobu Hanyu