Mounting Multitrack Head Patents (Class 29/603.05)
  • Patent number: 9805744
    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.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 31, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jianhua Xue, Jian Zhong, Lei Lu, Yan Dong, Kirill Rivkin
  • Patent number: 8965552
    Abstract: The present disclosure provides a method and a device for titling, which can achieve automatic correction when deviation occurs between a real titling position of a product to be titled and a preset titling position, so as to avoid an ID shift phenomenon, and thus ensure accuracy of titling positions and improve titling efficiency. The titling method provided in the present disclosure comprises: determining a real titling position of a product to be titled; comparing the real titling position with a preset titling position; and titling the product to be titled in accordance with the comparison result.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: February 24, 2015
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Fengguo Wang
  • Patent number: 8191233
    Abstract: According to one embodiment, a head stack assembly incorporating device connects a head stack assembly to the base of a magnetic disk device by screwing a connector on the bottom surface of the rotational shaft of the head stack assembly and a connector on the base of the magnetic device together. The head stack assembly incorporating device includes a chuck and a driving-force transmitter. The chuck pinches the rotational shaft of the head stack assembly from the upper surface of the head stack assembly to be fixed to the rotational shaft. The chuck is rotatable around the central axis of the rotational shaft. The driving-force transmitter transmits a rotational force to the chuck.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 5, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryousuke Naide, Takeshi Kurumizawa
  • Patent number: 7893534
    Abstract: A thermally insulating bonding pad for solder reflow is described. The bonding pad includes a structure. The structure forms the bonding pad. The bonding pad further includes an insulator formed on the structure. The insulator is configured to be interposed between the structure and a substrate of a component onto which said bonding pad is to be disposed. The bonding pad provides thermal insulation for said substrate when said bonding pad is subject to a solder reflow process being performed thereon.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: February 22, 2011
    Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.
    Inventors: Toshiki Hirano, Haruhide Takahashi, Tatsumi Tsuchiya
  • Patent number: 7874063
    Abstract: A thin film magnetic head integrated structure is provided. A plurality of thin film magnetic head bars include a plurality of thin film magnetic head precursors, a plurality of RLG sensors for read head core, and a plurality of RLG sensors for write head core, the read head core including a magnetoresistive element that performs a read process and the write head core including a magnetic pole layer that performs a write process.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: January 25, 2011
    Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.
    Inventors: Naoto Matono, Yoshihiko Koyama, Tatsuya Harada
  • Patent number: 7832083
    Abstract: A shipping comb combined with a head stack assembly (HSA) which includes sliders recording data onto or reading data from disks, suspensions having the sliders thereon, and end-taps at front ends of the suspensions, the shipping comb preventing the HSA from being damaged, the shipping comb including a body unit having protruding suspension spacers which are each inserted between middle portions of a pair of suspensions having a pair of sliders facing each other to prevent a collision of the middle portions of the pair of suspensions, and a head unit having protruding end-tap spacers inserted between the end-taps of the pair of the suspensions to prevent a collision of the front ends of the pair of suspensions, and connected to a front end of the body unit with a hinge.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: November 16, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jung-moo Son, Ji-ho Hwang
  • Patent number: 7650686
    Abstract: A servo track writer (STW) clockhead radius jig is disclosed. One embodiment provides a hard disk drive assembly including a base having a cutaway portion to provide visual access therein. In addition, a disk is mounted in the hard disk drive assembly, this disk having an indicator thereon to indicate a required radius setting for a clockhead.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: January 26, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Teodosio Quilapquilap
  • Publication number: 20090225476
    Abstract: Embodiments of the present invention provide a head stack assembly and a manufacturing method thereof in which manufacturing costs as a multi-disc magnetic device are reduced by increasing the yield and reducing inventory of magnetic heads which can be assembled to the head stack assembly. According to one embodiment, a head stack assembly and a manufacturing method thereof includes plural actuator arms to which magnetic heads are assembled through suspensions. The tolerance of the core width or the write element width of the magnetic heads assembled to inside actuator arms of the plural actuator arms is set to be narrower than the tolerance of the core width or the write element width of the magnetic heads assembled to the outside actuator arms.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 10, 2009
    Inventors: Hiroshi Fukuyama, Makoto Ono, Yoshiteru Katsumura, Yasunori Nishimoto
  • Patent number: 7568277
    Abstract: A method for forming rails on the beam region of a disk drive head suspension. Rails are formed on a first portion of the beam region while supporting the beam region at a first location. Rails are formed on a second portion of the beam region while supporting the beam region at a second location that is different than the first location.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: August 4, 2009
    Assignee: Hutchinson Technology Incorporated
    Inventors: Jacob D. Bjorstrom, Clark T. Olsen
  • Publication number: 20080313885
    Abstract: Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure.
    Type: Application
    Filed: June 22, 2007
    Publication date: December 25, 2008
    Inventors: Wen-Chien Hsiao, Yimin Hsu, Vladimir Nikitin
  • Publication number: 20080148553
    Abstract: Embodiments of the present invention pertain to extracting particles from a slider to enable particle quantification. According to one embodiment, a slider, which is associated with a head stack assembly, is submerged into a solution. Particles are extracted from the slider without extracting particles from the entire head stack assembly.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 26, 2008
    Inventors: Yiqi Feng, Hui Yan Hu, Sai H. Wong, Yi Zhao Yao
  • Patent number: 7359156
    Abstract: A magnetic tape head system and associated method are disclosed. Included is one or more head assemblies each including a base with a row bar coupled thereto with a head situated therein for defining a tape bearing surface defining a tape wrap angle with respect to a horizontal plane. A length of the tape bearing surface is between approximately 0.57 millimeters and 0.7 millimeters and the tape wrap angle is between approximately 0.5 degrees and 1.3 degrees such that a resolution of the magnetic tape head system is substantially independent of a velocity of the tape.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: April 15, 2008
    Assignee: International Business Machines Corporation
    Inventor: Robert Glenn Biskeborn
  • Patent number: 7333306
    Abstract: A TMR sensor, a CPP GMR sensor and a CCP CPP GMR sensor all include a tri-layered free layer that is of the form CoFe/CoFeB/NiFe, where the atom percentage of Fe can vary between 5% and 90% and the atom percentage of B can vary between 5% and 30%. The sensors also include SyAP pinned layers which, in the case of the GMR sensors include at least one layer of CoFe laminated onto a thin layer of Cu. In the CCP CPP sensor, a layer of oxidized aluminum containing segregated particles of copper is formed between the spacer layer and the free layer. All three configurations exhibit extremely good values of coercivity, areal resistance, GMR ratio and magnetostriction.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: February 19, 2008
    Assignee: Headway Technologies, Inc.
    Inventors: Tong Zhao, Kunliang Zhang, Hui-Chuan Wang, Yu-Hsia Chen, Min Li
  • Patent number: 7194795
    Abstract: A head suspension or head suspension component for supporting a head slider over a rigid disk in a dynamic storage device and a method of manufacturing. The head suspension includes a head suspension component and a compliant locating feature formed within the head suspension component. The compliant locating feature includes a plurality of spring beam tabs defined by an aperture and positioned to extend toward an opening. The compliant feature is preferably configured to receive a tapered cylindrical pin through the opening for precisely locating the head suspension component relative to a desired reference while the spring beam tabs are engaged by the tapered pin. The head suspension component may include two or more compliant locating features, and the head suspension may include two or more components that each include one or more compliant locating features.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: March 27, 2007
    Assignee: Hutchinson Technology Incorporated
    Inventor: Richard R. Jenneke
  • Patent number: 7171740
    Abstract: A tape head module assembly method is disclosed. A first and second module holder are placed in an initial alignment with module holder ends facing each other, the module ends each holding a tape head module. A tape wrap angle between the first and second module is set by first performing a fringe alignment and then lifting a rear end of the first and second module holder a prescribed amount. A horizontal adjuster produces a rotation for the first module holder so that gaps between the first and second modules are parallel. An alignment along a longitudinal axis for the second module holder is selected and the second module is translated laterally until the second tape head module held by the second module holder is aligned with the first tape head module held by the first module holder to provide reader-opposite-writer track-to-track registration. Then, the first and second tape head modules are joined together using a joining agent in the gap between the first and second tape head modules.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: February 6, 2007
    Assignee: International Business Machines Corporation
    Inventor: Robert Glenn Biskeborn
  • Patent number: 7159299
    Abstract: A head stack assembly comb (154) for maintaining the heads (44) of a head stack assembly (26) in spaced relation is disclosed. The head stack assembly comb (154) includes a comb body (158) and a latch (218). The comb body (158) engages an upper surface of an uppermost actuator arm (30a) in the head stack assembly (26). The latch (218) engages a lower surface of this same actuator arm (30a). When installing the comb (154), the comb (154) is pivoted relative to the head stack assembly (26). This brings the latch (218) into engagement with the noted actuator arm (30a) and causes the latch (218) to pivot in a first direction against a spring (214), and then in the opposite direction by the action of the spring (214) on the latch (218) to engage the latch (218) with the lower surface of the noted actuator arm (30a).
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: January 9, 2007
    Assignee: Maxtor Corporation
    Inventors: Tom E. McMunigal, John D. McCrandall
  • Patent number: 7155807
    Abstract: A method for centering and securing data storage disks to the hub of a spindle motor in a hard disk drive has a chamfer and a countersink on the top of the spindle motor shaft center. During the hard disk drive assembly process, a disk centering tool engages and uses these features to locate and center the disks that are installed on the spindle motor. The features are closely toleranced to provide a very precise centering feature for mounting and aligning the media disks with respect to the hub and the spindle motor. The present design reduces the complexity of the tooling and fixtures required to complete the assembly. As a result, the overall part cost is reduced and the manufacturing yield is improved.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: January 2, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands BV
    Inventors: Ta-Chang Fu, Robert A. Lenicheck, Sattar Malek, Kim Ungtae, Stanley Yen Wong
  • Patent number: 7137187
    Abstract: A method producing a limiter and flexure configuration that includes a flexure that has a first section attached to the load beam, and a second section defining a slider mounting section and a frame that defines an aperture into which the slide mounting section extends in a direction towards the first section, and terminating in an end that interacts with the free end of the limiter. The aperture is sized and positioned to provide a clearance allowing the limiter to freely move through the aperture such that the limiter is free to be bent from the first position to the second position and to extend through the aperture after the flexure assembly has been attached to the load beam. The limiter is bent from the first position to the second position, extending through the aperture, after the flexure assembly has been attached to the load beam.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 21, 2006
    Assignee: Hitachi Global Storage Technologies, The Netherlands B.V.
    Inventors: Tzong-Shii S. Pan, Surya Pattanaik
  • Patent number: 7111383
    Abstract: Methods of forming a head assembly, a head assembly, and a linear tape drive are provided. One aspect provides a method of forming a head assembly including providing a base member; forming a plurality of head components upon the base member individually adapted to communicate information relative to a tape; providing a plurality of component regions adjacent respective ones of the head components and a path of travel of the tape; and providing a support region intermediate adjacent ones of the head components and positioned to support the tape moving along the path of travel, the support region comprising a material different than a material of the component regions.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: September 26, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Richard H. Henze, Albert H. Jeans, Paul W. Poorman
  • Patent number: 7089649
    Abstract: Thermal pole tip protrusion is caused by materials in and around head slider expanding during write operations till they protrude, leading to contact with the rotating disk surface, altering the flying height and often wearing down part of the disk surface. While well known that read-write heads expand during writing, the inventors who recognized this situation's significance, particularly as flying height decreases and data rates increase, both required for high areal density disk drives. The inventors realized that they could detect the problem at the spin stand level by testing head gimbal assemblies to reliably, and inexpensively, predict the tendency for thermal pole tip protrusion. This leads to selection of head gimbal assemblies, which do not have the thermal pole tip protrusion tendency. The selected head gimbal assemblies have better reliability, as do actuators and disk drives made with the selected head gimbal assemblies.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co. Ltd,
    Inventors: Geng Wang, Hae Jung Lee, Keung Youn Cho, Sang Lee
  • Patent number: 7051423
    Abstract: This invention relates to a testing method for a head IC which makes it possible to simplify checking of the head. The head IC is installed on a head suspension, and probes are placed on terminals of the head suspension to check electric characteristics of the head IC. With this invention, contact of the probes for checking the head IC when the head IC has been installed, but before installing the head, becomes easier.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: May 30, 2006
    Assignee: Fujitsu Limited
    Inventor: Akio Gouo
  • Patent number: 7036209
    Abstract: A method of simultaneously forming magnetic transition patterns in both side surfaces of a dual-sided magnetic or magneto-optical (MO) recording medium comprises steps of: (a) providing a dual-sided magnetic or MO recording medium having first and second opposing side surfaces; (b) providing a first magnetic stamper/imprinter having a first topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a first pattern corresponding to a first magnetic transition pattern to be formed in the first side surface; (c) providing a second magnetic stamper/imprinter having a second topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a second pattern corresponding to a second magnetic transition pattern to be formed in the second side surface, the second magnetic stamper/imprinter being formed from the first magnetic stamper/imprinter in a “mother”/“son” relationship; (d) contacting the first side surface with th
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: May 2, 2006
    Assignee: Seagate Technology LLC
    Inventors: Koichi Wago, Neil Deeman, Jing Gui
  • Patent number: 6996893
    Abstract: A method of assembling a plurality of disk drives comprising providing an assembly-plate comprising a plate alignment feature (PAF) and a plurality of cells wherein each cell has a cell alignment feature (CAF) and is adapted to receive and retain a disk drive; determining a valid alignment of the assembly-plate in relation to a disk drive assembly device based on PAF; selecting a disk drive for assembly; determining a valid alignment of a selected cell in relation to disk drive assembly device based on CAF of selected cell; placing an initial component of selected disk drive in selected cell wherein the initial component is retained by the cell via a retention feature of cell; repeating the selecting, determining a valid alignment of a selected cell, and placing for each of disk drives; and completing the assembling of each disk drive during which each disk drive remains in its cell.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 14, 2006
    Assignee: Western Digital Technologies, Inc.
    Inventors: Daniel R. Ostrander, William W. Garrett
  • Patent number: 6944936
    Abstract: A method for manufacturing an integrated lead suspension or component having an integrated circuit (IC) with an array of terminals. The suspension or component is formed from a laminated sheet of material including a spring metal layer and a conductive material layer separated by an insulating layer. The method includes forming an IC window in the spring metal layer, forming integrated conductive leads in the conductive material layer and forming holes in the insulating layer. The IC can then be mounted to the suspension or component in the IC window, and the array of terminals electrically interconnected to the integrated conductive leads through the insulating layer.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: September 20, 2005
    Assignee: Hutchinson Technology Incorporated
    Inventor: Todd A. Krinke
  • Patent number: 6941642
    Abstract: Disclosed is a head stack load comb used in the controlled loading of a head of a head stack assembly (HSA) onto a disk during the assembly of a disk drive. The HSA includes an actuator arm, a head, and a loading surface. The load comb includes a base structure and at least one ramp finger projecting approximately perpendicularly from the base structure. In order to load the head in a controlled manner onto the disk, the loading surface of the HSA is rotated along the ramp finger until the head is in a load position and then the base structure is actuated in a vertical direction such that the ramp finger is correspondingly actuated in the vertical direction towards the disk until the head is loaded onto the disk.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: September 13, 2005
    Assignee: Western Digital Technologies, Inc.
    Inventors: Jai N. Subrahmanyam, Serge Hauert
  • Patent number: 6938326
    Abstract: A suspension load beam for an actuator assembly of a disk drive includes a bend radius portion with a spring rate that is less than 18 Newtons per meter, a first bending mode that is greater than 3,500 Hertz, and a first torsion mode that is greater than 5,300 Hertz. The method of making this suspension load beam includes cutting a sheet of material to form a flat suspension load beam including a bend radius portion, removing material in the bend radius portion from full thickness, inspecting the bend radius portion to determine its thickness, and removing material from the bend radius portion and/or from the main body of the suspension load beam to compromise the performance difference due to thickness variation in bend radius portion.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: September 6, 2005
    Assignee: Maxtor Corporation
    Inventors: Y.-J. Dennis Chen, Lin Guo
  • Patent number: 6507992
    Abstract: A method for merging the disc pack, E-block and magnet of a disc drive, the disc pack conveyed to a first selected position in a merge assembly station and moved to a merge slide assembly where calibration measurements of disc pack height and squareness are made at a reference position. The merge slide assembly moves the disc pack from the reference position to a shuttled position, the E-block is moved to an E-block nest assembly where the load arms of the E-block are spread in response to the calibration measurements, and the discs of the disc pack are interweaved between opposing read/write heads of the E-block. A magnet slide assembly positions the magnet to straddle the E-block. The disc pack, E-block and magnet are moved together, maintaining the merged interrelationship, to the basedeck and fastened to the basedeck.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: January 21, 2003
    Assignee: Seagate Technology LLC
    Inventors: James Randall Jenkins, Tommy Joe Metzner, Roger Allen Jessen
  • Patent number: 6333470
    Abstract: An assembly including a magnetic head for recording information using a chip based assembly. The assembly includes a chip mounted on a base where a printed circuit with conducting tracks underneath is passed through the base to come into contact with the chips's connection studs. Also disclosed is the process for the manufacture of chip based assemblies.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: December 25, 2001
    Assignee: Commissariat A L'Energie Atomique
    Inventors: Jean-Baptiste Albertini, Gérard Barrois, Roger Marillat