Dynamic magnetic information storage or retrieval inventions 03/08

20080074787 - Devices and methods for storing data: Data-storage devices and methods are disclosed. An exemplary data-storage device includes a medium having at least two dimensions and having a surface. Multiple data-containing loci are arranged on the surface. Each locus has a respective amount of magnetically responsive particles. The respective amounts are different in at least some of... Agent: Klarquist Sparkman, LLP

20080074788 - Data storage system with media having shape memory alloy protected layer: A disk for a hard disk drive. The disk includes a protective layer of shape memory alloy material over a magnetic layer. Contact between a head of the drive and the shape memory alloy material will cause frictional heat. The heat will cause a solid-solid phase transformation of the shape... Agent: Irell & Manella LLP

20080074789 - Head slider having protruding head element and apparatus for determining protrusion amount of head element: A head slider has a medium-opposed surface defining first and second areas extending side by side from the inflow end to the outflow end. A head element is embedded in an insulating non-magnetic film. The head element at least locates a write gap in a first section defined in the... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080074790 - Recording apparatus having flexible wiring member portions of which overlap each other: A recording apparatus, including: a recording head having an actuator including first and second groups of terminals arranged in a direction; a flexible wiring member connected at one end thereof to the terminals and at the other end thereof to an external signal source and including first and second band-like... Agent: Eugene Ledonne, Esq. Reed Smith LLP

20080074791 - Head slider having a flat first step and a second flat step with a groove therein, and disk drive employing the head slider: A head slider includes a parallelepiped-shaped slider base having a flat flying surface. A flat first step is formed at an air inlet end of the flying surface to be stepped from the flying surface. A flat second step is formed on the first step to be stepped from the... Agent: Greer, Burns & Crain

20080074792 - Control scheme for a memory device: A system for storing information comprises a media die including a frame and a media platform movably coupled with the frame, a media associated with the media platform, one or more capacitive sensors including an electrode fixedly connected with the media platform, and a tip platform including a tip, the... Agent: Fliesler Meyer LLP

20080074793 - Disk medium with antenna and method for manufacturing the same: A disk medium having an IC chip capable of delivering information to an external source contactlessly even if several media are stacked. In the disk medium, an annular slot constituting a non-film portion without metal film is formed close to the boundary between an information non-recording area and an information... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080074794 - Method and apparatus for pitch angle actuation of slider based upon pressure and humidity conditions in a contact start-stop css: A pitch actuator coupling to at least the flexure finger of a head gimbal assembly, flexing the flexure finger to alter the pitch angle between slider and disk surface. Operating a head gimbal assembly by stimulating the pitch actuator to alter slider pitch angle and the head gimbal assembly implementing... Agent: Gregory Smith & Associates

20080074798 - Method of testing head slider and method of manufacturing head gimbal assembly: A method includes a head-slider manufacturing process that manufactures a head slider composed of a sensor section and a slider main body. The sensor section has a tunnel magnetoresistive film and a pair of electrode films. The method further includes: a measurement process that measures a difference between an impedance... Agent: Kratz, Quintos & Hanson, LLP

20080074801 - Magnetic head structure and method for manufacturing magnetic head structure: A magnetic head substrate is provided with a recording element having a main magnetic pole layer and a recording-side monitor element including a resistance film, a lead conductor located as a layer below the resistance film, and a contact conductor for conductively connecting the resistance film and the lead conductor.... Agent: Brinks Hofer Gilson & Lione

20080074800 - Manufacturing method of thin-film magnetic head and thin-film magnetic head: A manufacturing method of a thin-film magnetic head with an MR read head element, includes an MR film deposition step of depositing on a lower magnetic shield layer an MR multi-layered film, a first patterning step of patterning the deposited MR multi-layered film for defining a track width using a... Agent: Oliff & Berridge, PLC

20080074799 - Magnetoresistance element magnetic random access memory, magnetic head and magnetic storage device: A magnetoresistance element includes an antiferromagnetic layer, a fixed ferromagnetic layer, a first nonmagnetic layer and a free ferromagnetic layer. The antiferromagnetic layer is formed on the upper surface side of a substrate. The fixed ferromagnetic layer is formed on the antiferromagnetic layer. The first nonmagnetic layer is formed on... Agent: Scully Scott Murphy & Presser, PC

20080074807 - Cpp spin valve with long spin diffusion length ap1 layers: A magnetoresistive sensor having a pinned layer that includes a first magnetic layer (AP1) a second magnetic layer (AP2) and an antiparallel coupling layer sandwiched between the AP1 and AP2 layers. The AP1 layer is adjacent to a layer of antiferromagnetic material (AFM layer) and is constructed so as to... Agent: Zilka-kotab, PC

20080074808 - Magnetoresistive element, manufacturing method thereof, and magnetic storage device utilizing the same magnetoresistive element: A magnetoresistive element 11 is formed with inclusion of a free layer 12, a pinned layer 13, an antiferromagnetic layer 14 for pinning the pinned layer 13, an intermediate layer 15 provided between the free layer 12 and the pinned layer 13, and a ferromagnetic layer 16 for applying a... Agent: Greer, Burns & Crain, Ltd.

20080074805 - Tunnel magnetoresistive sensor in which at least part of pinned layer is composed of cofeb layer and method for manufacturing the tunnel magnetoresistive sensor: A tunnel magnetoresistive sensor includes a pinned magnetic layer, an insulating barrier layer formed of Mg—O, and a free magnetic layer. A barrier-layer-side magnetic sublayer constituting at least part of the pinned magnetic layer and being in contact with the insulating barrier layer includes a first magnetic region formed of... Agent: Brinks Hofer Gilson & Lione

20080074804 - Tunneling magnetic sensing element having free layer containing cofe alloy and method manufacturing the same: A tunneling magnetic sensing element including an Mg—O insulating barrier which can maintain favorable soft-magnetic properties of a free magnetic layer and can have a high resistance change ratio (ΔR/R) compared to known tunnel magnetic sensing elements is disclosed, and a method of manufacturing such a tunneling magnetic sensing element... Agent: Brinks Hofer Gilson & Lione

20080068740 - Method and apparatus for writing servo data and positioning head in a disk drive: According to one embodiment, a disk drive having a disk medium on which servo data is recorded, and a control unit that controls the positioning of a head, moving the head to a target position on the disk medium in accordance with the servo data. The servo data contains servo-burst... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080068739 - Storage apparatus, control method, and control circuit: Upon correction, a preheat sector number measurement unit measures a preheat sector number which corresponds to transition time from when electric power distribution to and heating of the heater by preheat electric power is started until when it is stabilized to a predetermined target flying height. Upon reproduction or recording,... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080068742 - Air pressure sensor: An air pressure sensor capable of measuring air pressure highly accurately with a simple configuration is provided. The sensor includes: a sealed case with a sealed space formed therein; a first thin plate member which constitutes at least a part of the wall of the sealed case and deforms to... Agent: Greenblum & Bernstein, P.L.C

20080068745 - Magnetic disc drive, and a method for manufacturing the same: When a cover is joined with the base of a magnetic disc drive by welding, bubbles in the die casting suddenly expand due to high temperature at the time of welding and blow off fused metal, and a blowhole occurs. Low density gas sealed up in a casing is liable... Agent: Townsend And Townsend And Crew LLP

20080068746 - Rotating disk type storage device: Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. According to one embodiment, a spoiler is... Agent: Townsend And Townsend And Crew LLP

20080068736 - Magnetic transfer holder unit, transfer apparatus, method of manufacturing a transfer medium, and magnetic recording medium: A holder unit for use in a transfer apparatus that causes a surface of a transfer master and a surface of a slave medium to be in direct contact with each other and transfers information on the transfer master surface to the slave medium surface. The holder unit includes a... Agent: Sughrue Mion, PLLC

20080068737 - Apparatus and method for detecting an optimal writing power: A method and apparatus for accomplishing an OPC (optimal power calibration) at a test area secured in data recording area of a writable optical recording medium and detecting an optimal writing power appropriate to the test area, are discussed. According to an embodiment, the method searches for a marginal area... Agent: Birch Stewart Kolasch & Birch

20080068741 - Method of writing pattern in disk, method of following track on disk, and apparatus for writing pattern in disk: Embodiments of the present invention efficiently perform servo correction for prevention of propagation of a position error in a radial direction in self servo write (SSW). According to one embodiment, in SSW, a target position of a reference track TO in writing a servo write track TN is corrected. The... Agent: Townsend And Townsend And Crew LLP

20080068743 - Information recording/reproducing device: An information recording/reproducing device according to an example of the present invention includes first and second heads, a recording medium having a data area from which recording data is read by the first head and a servo burst area from which a servo burst signal is read by the second... Agent: Charles N.j. Ruggiero, Esq. Ohlandt, Greeley, Ruggiero & Perle, L.L.P.

20080068744 - Hard disk drive: Provided is a hard disk drive including a flat disk mounting surface including no recessed portion which causes minute deformation hindering accurate recording/reproducing. The hard disk drive includes: a magnetic disk (2), which is rotationally driven for recording and reproducing information; a rotor hub (12) including a disk mounting surface... Agent: Bruce L. Adams, Esq.

20080068747 - Magnetic head for perpendicular magnetic recording and method of manufacturing same: A magnetic head comprises: an encasing layer having a groove; a nonmagnetic metal layer that has a sidewall located directly above the edge of the groove and that is disposed on a region of the encasing layer away from the medium facing surface; two side shield layers that have sidewalls... Agent: Oliff & Berridge, PLC

20080068748 - Thermally-assisted perpendicular magnetic recording system with write pole surrounding an optical channel and having recessed pole tip: A thermally-assisted perpendicular magnetic recording head and system has a head carrier that supports an optical channel for the transmission of radiation to the recording layer, a write pole for directing a magnetic field to the recording layer, and an electrical coil for inducing the magnetic field from the write... Agent: Thomas R. Berthold

20080068749 - Thin-film magnetic head with coil-insulating layer that thermal expansion coefficient and young's modulus are specified: A thin-film magnetic head that the TPTP phenomenon due to the environment temperature is surely suppressed without providing a new particular component is provided. The thin-film magnetic head is provided, which includes, an electromagnetic coil element for writing data with a coil layer which generates magnetic field by current flowed... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080068751 - Low track pitch write module and bidirectional tape head: A low track pitch write module and bidirectional tape head for writing and/or reading data on a magnetic recording tape. The write module and tape head have a tape bearing surface for engaging the magnetic recording tape and plural write elements. The write elements are arranged so that the write... Agent: Walter W. Duft

20080068752 - Planar bidirectional tape head with planar read and write elements: A planar bidirectional tape head with planar read and write elements for reading and writing data on a magnetic recording tape includes a substrate, a tape bearing surface for engaging the magnetic tape, one or more write element arrays formed on the substrate, and one or more read element arrays... Agent: Walter W. Duft

20080068750 - Planar write module and hybrid planar write-vertical read bidirectional tape head: A planar write module and a hybrid planar write-vertical read bidirectional tape head comprising the write module and one or more vertical read modules. The write module has a write module tape bearing surface for engaging the magnetic recording tape. Plural write elements in the write module each comprise plural... Agent: Walter W. Duft

20080068753 - Tape path control system with precision-aligned conjugated rollers: A tape path control system and related method for controlling the position of a tape medium in the tape drive. The tape path includes a first tape guide roller, a second tape guide roller spaced from the first roller, and a transducing head situated between the first and second rollers.... Agent: Walter W. Duft

20080068754 - Apparatus system and method for variable data density patterned media: An apparatus, system, and method are disclosed for variable data density patterned media. The apparatus includes a patterned media recording surface comprising a plurality of sectors. Each sector may include a synchronization region configured to generate a signal in a read head, a first data region with a first data... Agent: Kunzler & Mckenzie

20080068755 - Magnetic disk drive, magnetic disk drive manufacturing method and method of estimating gas amount in magnetic disk drive: Embodiments of the present invention provide a magnetic disk drive that can estimate the amount of gas filled in a housing precisely and simply. According to one embodiment, a magnetic disk drive including a housing in which a magnetic disk and a magnetic head are accommodated and gas having lower... Agent: Townsend And Townsend And Crew LLP

20080068756 - Head slider having recess at outflow end of front air bearing surface: A front rail is defined on the bottom surface at a position near the inflow end of the slider body. A front air bearing surface is defined on the top surface of the front rail. A rear rail defined on the bottom surface at a position near the outflow end... Agent: Kratz, Quintos & Hanson, LLP

20080068757 - Head stack assembly: A head stack assembly of a disk drive unit includes a head arm assembly (HAA) having a head gimbal assembly, a drive arm to be connected with the head gimbal assembly; wherein the drive arm comprises a securing portion, a connection portion and a spacer connecting the securing portion with... Agent: Baker Donelson Bearman Caldwell & Berkowitz, PC

20080068758 - Reduction of electrostatic charges in hard disk drives: A hard disk drive with an actuator arm that discharges static charge from a disk. The actuator arm may be constructed from a corona discharger and/or a Polonium 210 or Americium 241 material that discharges static charge as the arm is moved across a disk. The disk is typically discharged... Agent: Irell & Manella LLP

20080068759 - Piezoelectrically-controlled integrated magnetic device: The magnetic device according to the invention is integrated on a substrate and comprises at least one element made of piezoelectric material associated with actuating electrodes, and at least one magnetic element able to deform under the stress of the piezoelectric material element. The device has the form of a... Agent: Oliff & Berridge, PLC

20080068761 - Magnetoresistive device, read head having the same, and storage having read head: A method for manufacturing a magnetic head device that includes a soft magnetic layer includes the steps of forming a plating base layer in the soft magnetic layer through sputtering, and applying, during the forming step, a magnetic field in a direction parallel to an orientation fringe of a wafer... Agent: Greer, Burns & Crain

20080068760 - Thin film magnetic head, magnetic recorder, and method for manufacturing thin film magnetic head: m

20080068762 - Thin film magnetic head including thermal deformation-preventing layer: A thin film magnetic head includes a recording and playback element, a lead conductor layer for feeding a power to the recording and playback element, an electrically conductive bump for conductively connecting the lead conductor layer to an electrode pad for external connection, and an insulating protective layer filling between... Agent: Brinks Hofer Gilson & Lione

20080068763 - Magnetic disk apparatus: A magnetic disk apparatus having a highly sensitive reproducing head and a method for manufacturing the magnetic disk apparatus are disclosed. A spin-valve-type multilayer film composed of an antiferromagnetic layer, a ferromagnetic layer, a nonmagnetic layer and a free magnetic layer is used as a magnetoresistive-effect device for the reproducing... Agent: Steptoe & Johnson LLP

20080068764 - Magnetoresistance effect element, magnetic head, magnetic reproducing apparatus, and magnetic memory: A magnetoresistance effect element comprises a magnetoresistance effect film and a pair of electrode. The magnetoresistance effect film having a first magnetic layer whose direction of magnetization is substantially pinned in one direction; a second magnetic layer whose direction of magnetization changes in response to an external magnetic field; a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080068765 - Magnetoresistive effect element, magnetic head and magnetic reproducing apparatus: A spin valve type magnetoresistive effect element for vertical electric conduction includes a magnetoresistive effect film in which a resistance adjustment layer made of a material containing conductive carriers not more than 1022/cm3 is inserted. Thus the resistance value of a portion in change of spin-relied conduction is raised to... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080068767 - Exchange-coupled film, method for making exchange-coupled film, and magnetic sensing element including exchange-coupled film: An exchange-coupled film includes a seed layer, an antiferromagnetic layer, and a ferromagnetic layer. The seed layer is formed at a thickness that is larger than the critical thickness, and the thickness of the seed layer is then decreased by etching so as to be smaller than or equal to... Agent: Brinks Hofer Gilson & Lione

20080068766 - Magnetoresistance effect device having crystal grain boundary and method of manufacturing the same: A magnetoresistance effect device includes a magnetized free layer formed of a ferromagnetic material, a magnetized fixing layer formed of a ferromagnetic material and having a crystal grain boundary, a nonmagnetic layer provided between the magnetized free layer and the magnetized fixing layer, and an antiferromagnetic layer provided on one... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080062550 - Adjacent track interference (ati) identification methodology: A method for identifying adjacent track interference for a head is provided. The method comprises writing a first data track at a predetermined track position; writing a second data track two track positions away from the first data track; and validating the position of the first data track and the... Agent: Wagner, Murabito & Hao LLP

20080062551 - Method and apparatus for measuring resistance of a resistive sensor: An apparatus and method for determining a head parameter value (e.g., head resistance) of a resistive head. A test head current is supplied to the head during a head parameter measurement interval using the same current sources that supply a bias current to the head during an operating (read operation)... Agent: Mendelsohn & Associates, P.C.

20080062549 - Method and system for testing of magnetic disks using f-ber: Spinstand test improvement that measures Functional Byte Error Rate (F-BER) of a disk. The F-BER is correlated to the BER of a disk. The F-BER test is faster than a BER test. The F-BER test is incorporated into a spinstand tester or the software associated with a spinstand tester.... Agent: Hitachi Global Storage Technologies, Inc.

20080062552 - Slew-rate control device, storage device, and slew-rate control method: A slew-rate control device controls a slew rate of a control signal based on which data reading or data writing is performed with respect to a storage medium. A retry executing unit changes, when an error occurs during the data reading or the data writing, the slew rate of the... Agent: Greer, Burns & Crain, Ltd.

20080062553 - Disk recording medium and information recording apparatus: In the case of a magnetic head tracing a record track from the left to right, a positional demodulation signal obtained by passing a first servo sector existing in the record track is minutely corrected by a positional correction signal converted from a phase shift amount which is obtained by... Agent: Greer, Burns & Crain

20080062555 - Method of starting the magnetic disk device using fluid dynamic bearing spindle motor: Embodiments of the present invention provide a magnetic disk device including a spindle motor using a fluid dynamic bearing, which can send back READY within a period requested by a host system at the time of starting a magnetic disk device under low temperature and low supply voltage conditions without... Agent: Townsend And Townsend And Crew LLP

20080062558 - Automated tape library for docking within a server docking station: An automated tape library employs a docking frame structurally defining a tape storage workstation operable to be interlocked with one or more server slots of a server docking station for docking the automated tape library within the server docking station. The tape storage workstation houses a tape drive, one or... Agent: Frank C. Nicholas Cardinal Law Group

20080062559 - Contactless method for power and communications in a tape library: A tape library is provided with a fixed coupling mechanism so that the tape library includes discrete locations via which power and communication are provided to an accessor. The use of such a coupling mechanism in a vertical tape library allows for the use of gravity to ensure that the... Agent: Hamilton & Terrile, LLP IBM Tucson

20080062547 - System, method, and apparatus for forming a patterned media disk and related disk drive architecture for head positioning: A solution to the problem of long, e-beam mastering times needed for patterning masters for patterned magnetic disk media is disclosed. A process for fabrication of masters takes advantage of the circular symmetry of magnetic disks and reduces the total required mastering time by an order of magnitude over prior... Agent: Bracewell & Giuliani LLP

20080062548 - Master recording medium, magnetic transfer method, magnetic transfer apparatus, and magnetic recording medium and magnetic recording and reproducing apparatus thereby made: The present invention provides a master recording medium, a magnetic transfer method, a magnetic transfer apparatus, and a magnetic recording medium and a magnetic recording and reproducing apparatus thereby made, which are capable of obtaining a good regenerative signal with few even harmonic components such as the second-order harmonic components... Agent: Sughrue Mion, PLLC

20080062554 - Timing recovery for data storage channels with buffered sectors: A storage channel, e.g., for a disk drive system, may asynchronously sample and buffer an entire sector, and then process the buffered sector to recover timing information. The storage channel may operate in an open-loop and utilize an exhaustive search to determine timing parameters. Alternatively, the storage channel may operative... Agent: Fish & Richardson P.C.

20080062556 - Head-disc contact detection using a microactuator: A method for detecting head-disc contact is disclosed. The method comprises locating a head including a head positioning microactuator and at least one of a read transducer and a write transducer adjacent to a disc such that the head is in communication with the disc, monitoring an output signal from... Agent: Shumaker & Sieffert, P. A.

20080062557 - Magnetoresistive element having free layer, pinned layer, and spacer layer disposed therebetween, the spacer layer including semiconductor layer: An MR element includes: a free layer having a direction of magnetization that changes in response to a signal magnetic field; a pinned layer having a fixed direction of magnetization; and a spacer layer disposed between these layers. The spacer layer includes a first nonmagnetic metal layer and a second... Agent: Oliff & Berridge, PLC

20080062562 - Information processing apparatus and write control method and program: According to one embodiment, an information processing apparatus includes a disk drive capable of writing data to a disk on which data can be written, a storage device configured to store data to be written on the disk, priority setting unit for setting priorities of the data stored in the... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080062560 - Scratch effect controller with slippable surface: The disclosure pertains to a scratch effect controller wherein the lower surface of the user manipulated disc and the upper surface of the rotary platter are made of low friction material. The lower surface of the user manipulated disc and the upper surface of the rotary platter impinge against each... Agent: Day Pitney LLP

20080062561 - Double-layered perpendicular magnetic recording media: Embodiments of the present invention provide solutions in the form of reducing the head to keeper spacing in a double-layered perpendicular magnetic recording medium, and improving the recording performance of the magnetic recording medium. A double-layered perpendicular magnetic recording medium and a method of fabricating the same are provided, for... Agent: Martine Penilla & Gencarella, LLP

20080062563 - Apparatus and method for attaching a disk to a spindle of a spinstand: Apparatus for attaching a disk to a spindle of a spinstand includes a spindle having a fluid pressure port therethrough for delivery of fluid pressure. A spindle adapter is adapted to be attached to the spindle and for holding a disk. The spindle adapter has a piston movable therein to... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080062564 - Apparatus and method for receiving and positioning a read/write head to a disk in a test apparatus: Apparatus for receiving and positioning a read/write head to a disk in a test apparatus has a deck and a spindle on the deck and on which a disk can be mounted for rotation of the disk. A gripper is provided for holding a head during testing, the gripper being... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080062565 - Magnetic slider, head gimbal assembly and method for manufacturing the same: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read... Agent: Townsend And Townsend And Crew LLP

20080062566 - Magnetic head slider with crown profile and fabrication method for the magnetic head slider: A magnetic head slider and a fabrication method for the magnetic head slider are provided in which a change in crown profile shapes resulting from a temperature difference is suppressed. The magnetic head slider includes a read/write element integrated on a slider body. A medium-facing surface of the slider body... Agent: Brinks Hofer Gilson & Lione

20080062567 - Suspension device: A suspension device including a flexure with conductors is provided with an anti-ESD section. The anti-ESD section includes a metal plate, a insulating layer, a first electrically conductive member formed of a pair of read conductors, a second electrically conductive member formed of a pair of write conductors, a heater... Agent: Frishauf, Holtz, Goodman & Chick, PC

20080062568 - Process for fabricating a slider or head for a data storage device: The application discloses processes for fabricating a slider or head for a data storage device. The processes disclosed provide a transducer portion that is separated from a slider body by a gap. In an illustrated embodiment, actuator elements are fabricated in the gap to adjust a position of the transducer... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20080062569 - Magnetic head suspension and method of manufacturing base part of magnetic head suspension: The present invention provides a magnetic head suspension including a flexure part including a magnetic head mounting region for supporting a magnetic head slider; a load bending part for generating a load to press the magnetic head slider towards a recording medium; a load beam part for transmitting the load... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080062570 - Storage: A carriage arm supports a head gimbal assembly that includes a head that records information in and/or reproduces the information from a recording medium. The carriage arm has a perforation hole filled with resin near a center part.... Agent: Greer, Burns & Crain

20080062571 - Head suspension assembly and flexure and head gimbal assembly: A head suspension assembly has a flexure partly fixed to a head suspension. The flexure is made of a single plate material. The flexure defines at least a thin portion and a thick portion. The thin portion is received on the head suspension for supporting a head slider. The thin... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080062572 - Tolerance ring for data storage with overlapping tab feature for mass control: A tolerance ring for coupling an actuator arm to a pivot bearing while maintaining mass eccentricity of the actuator arm. The tolerance ring having a substantially cylindrical base portion with a first radius about a central axis and extending a length parallel to the central axis, the cylindrical base portion... Agent: Snell & Wilmer LLP (oc)

20080062573 - Magnetic head: An object of the present invention is to provide a magnetic head in which symmetry of a reproduction waveform output is increased and its spread is decreased without decreasing the reproduction output. The film thickness of the distal end of the hard bias layer providing a bias magnetic field to... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080062574 - Magneto-resistance effect element, magnetic head, magnetic recording/reproducing device and magnetic memory: A magneto-resistance effect element includes a first magnetic layer of which a magnetization direction is fixed; a second magnetic layer of which a magnetization direction is fixed; an intermediate layer which is provided between said first magnetic layer and said second magnetic layer; and a pair of electrodes for flowing... Agent: Nixon & Vanderhye, PC

20080062575 - Magnetic recording medium, method for production thereof and magnetic recording and reproducing device using the medium: A magnetic recording medium includes at least a soft under layer, a perpendicular magnetic recording film and a protective film that are stacked on a nonmagnetic substrate. The nonmagnetic substrate is a disk of silicon having a diameter of 48 mm or less. A method for the production of the... Agent: Sughrue Mion, PLLC

20080062576 - Topographically defined thin film cpp read head: A narrow track-width magnetoresistive sensor by defining a trench formed between first and second hard bias layers and depositing the sensor into the trench. The sensor can include a sensor stack sandwiched between first and second electrically conductive lead layers. First and second electrically insulating side walls are formed at... Agent: Zilka-kotab, PC

20080062577 - Magnetoresistance effect element, magnetic head, magnetic reproducing apparatus, and magnetic memory: A magnetoresistance effect element comprises a magnetoresistance effect film and a pair of electrode. The magnetoresistance effect film having a first magnetic layer whose direction of magnetization is substantially pinned in one direction; a second magnetic layer whose direction of magnetization changes in response to an external magnetic field; a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080062578 - Multi-valued data recording spin injection maganetization reversal element and device using the element: A spin injection magnetization reversal device is disclosed which inhibits an increase in resistance to enable multi-valued data recording. A ferromagnetic fixed layer and n groups each including a ferromagnetic free layer and an isolation layer are disclosed. The groups are disposed from the group including the first ferromagnetic free... Agent: Rossi, Kimms & Mcdowell LLP.

20080062581 - Magnetic tunnel barriers and associated magnetic tunnel junctions with high tunneling magnetoresistance: Magnetic tunneling devices are formed from a first body centered cubic (bcc) magnetic layer and a second bcc magnetic layer. At least one spacer layer of bcc material between these magnetic layers exchange couples the first and second bcc magnetic layers. A tunnel barrier in proximity with the second magnetic... Agent: Daniel E. Johnson IBM Corporation, Almaden Research Center

20080062583 - Perpendicular magnetic recording medium: A perpendicular magnetic recording medium composed of a nonmagnetic substrate having a surface onto which are provided a plurality of layers including, in the order recited, a soft underlayer; a nonmagnetic coupling layer; a hard magnetic pinning layer which is antiferromagnetically coupled to the soft underlayer at ambient temperature via... Agent: Rabin & Berdo, PC

20080062582 - Tunnel magnetoresistive element and manufacturing method thereof: Stable anti-ferromagnetic exchange coupling can be obtained between a first pinned magnetic layer in a magnetoresistive element and a second pinned magnetic layer through smoothing of a non-magnetic intermediate layer, by smoothing the first pinned magnetic layer. The magnetoresistive element is made by sequentially laminating an underlayer, an anti-ferromagnetic layer,... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080062584 - Method for manufacturing a magnetoresistive sensor having a novel junction structure for improved track width definition and pinned layer stability: A method for manufacturing a magnetoresistive sensor having improved pinned layer stability at small track widths. The sensor has substantially vertical side walls that define the track width of the sensor. The free layer terminates at the substantially vertical side walls, but the pinned layer structure or a portion thereof... Agent: Zilka-kotab, PC

20080062585 - Method to achieve both narrow track width and effective longitudinal stabilization in a cpp gmr read head: Biasing schemes used for CIP GMR devices were previously thought to be impractical for CPP devices due to current shunting by the abutted hard magnets. In the present invention the CPP stripe is a narrow conductor directly above the free layer. The resistivity of the latter is made to be... Agent: Saile Ackerman LLC

20080062580 - Spin memory and spin fet: A spin memory includes a magneto-resistance element having a first ferromagnetic layer in which a magnetization direction is pinned, a second ferromagnetic layer in which a magnetization direction changes, and a first nonmagnetic layer between the first and second ferromagnetic layers, a lower electrode and an upper electrode extending in... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080062579 - Method for fabricating magnetic head slider: Embodiments of the present invention provide a method of fabricating a magnetic head slider realizing high-recording density at high-yields by preventing formation of a short circuit on the air-bearing surface of a magnetic head slider and preventing formation of an oxidized layer with significant film thickness which increases the effective... Agent: Townsend And Townsend And Crew LLP

20080055759 - Apparatus, system, and method for detecting a periodic sequence of servo signals: An apparatus, system, and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module transforms the plurality of values into transformed values. A confinement module confines the values to a limited set of... Agent: Kunzler & Mckenzie

20080055760 - Disk drive write driver and associated control logic circuitry: An H-bridge driver for a disk drive system includes first and second high side switched legs and first and second low side switched legs. An inductor head for writing data to and reading data from a magnetic media is connected to form a center of the H-bridge. The system includes... Agent: Stmicroelectronics, Inc.

20080055761 - Control apparatus, storage apparatus, and computer product: A rewrite determining unit acquires, for every servo frame recorded on a magnetic disk, an amplification degree, i.e., a gain of an amplifier circuit by which a read signal read from the magnetic disk is amplified to a predetermined output, determines a rewrite sector count based on the amplification degree,... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080055764 - Motor stator, spindle motor including the motor stator, and disk drive including the spindle motor: A motor stator includes a stator core stack having a core back and a plurality of teeth extending from the core back in a radial direction of the core back. The motor stator also includes winding wires wound around the teeth and having no bonding layer. Only winding wires of... Agent: Volentine & Whitt PLLC

20080055765 - Control apparatus, storage apparatus, and computer product: A rewrite determining unit of a hard disk apparatus acquires a servo signal that includes an offtrack amount corresponding to each servo frame from a position information memory, and determines whether a write fault has occurred based on the servo signal. If a write fault has occurred, the rewrite determining... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080055766 - Magnetic disk drive: Embodiments in accordance with the present invention provide a magnetic disk drive capable of alleviating an adverse effect of vibrations inherent to a housing on positioning control, reducing the adverse effect over other frequency range, and stabilizing the positioning control. In a magnetic disk drive according to embodiments of the... Agent: Townsend And Townsend And Crew LLP

20080055767 - Control apparatus, storage apparatus, and computer product: Offtrack amounts corresponding to every servo in which data writing has been completed is stored in a storage unit. Offtrack amount corresponding to a next servo frame, which is a servo frame present next to a servo frame for which data has been written, is calculated from the offtrack amounts... Agent: Greer, Burns & Crain

20080055768 - Method and device for servo frame velocity calculations of a storage media: A velocity calculator performs high-order calculations of servo frame velocities of a storage media, particularly tape and disk. The velocity calculator employs a servo frame indexing module for generating a first-order preceding servo frame velocity signal indicative of a first-order calculation of a preceding servo frame velocity including a first-order... Agent: Frank C. Nicholas Cardinal Law Group

20080055769 - Control device, storage device, storage medium, servo data demodulation method, repeatable velocity error measuring device, and computer product: A magnetic disk device includes a position and velocity demodulating circuit. In the position and velocity demodulating circuit, a difference calculating unit demodulates a moving velocity of a magnetic head based on a phase difference in servo signals as servo data in the same sector. An overflow detecting unit detects... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080055770 - Control device, storage device, method of demodulating servo information, and computer product: A control device demodulates servo information read from a storage medium of a storage device via a head. A velocity demodulating unit demodulates a moving velocity of the head based on the servo information. A velocity correcting unit corrects the moving velocity, when an amount of change in demodulated moving... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080055771 - Head stack assembly, and storage having the same: A head stack assembly includes a suspension that supports a head that records information in or reproduces the information from a recording medium, a base plate that attaches the suspension to an arm that rotates the suspension, and a suspension substrate provided onto the suspension and electrically connected to the... Agent: Greer, Burns & Crain

20080055772 - Method and apparatus for predicting contact of a read-write head in a hard disk drive: A Pre-Contact Signal Detector (PCSD) used to predict contact between read-write head and disk surface. A preamplifier may include the PCSD. A main flex circuit may include the preamplifier. A head stack assembly may include the main flex circuit. An embedded circuit may use a pre-contact alert circuit, which may... Agent: Gregory Smith & Associates

20080055773 - Multi-platter flexible media disk drive arrangement: According to the invention, a data storage system is disclosed. The system may include a housing, a spindle motor, a plurality of flexible disks, a first head, a second head, a first mechanism, and a second mechanism. The spindle motor may be coupled with the housing and operably coupled with... Agent: Townsend And Townsend And Crew, LLP

20080055762 - Thermally assisted magnetic head, head gimbal assembly, and hard disk drive: A laser diode is fixed to a light source support substrate and a first surface of a slider substrate is fixed to a second surface of the light source support substrate; therefore, the slider substrate and the laser diode are kept in a fixed positional relation Since the laser diode... Agent: Oliff & Berridge, PLC

20080055763 - Thermally assisted magnetic head, head gimbal assembly, and hard disk drive: A thermally assisted magnetic head has a slider substrate having a first surface located on the opposite side to a medium-facing surface, and side surfaces located between the medium-facing surface and the first surface; a magnetic head portion having a waveguide having a light exit face on the medium-facing surface... Agent: Oliff & Berridge, PLC

20080055775 - Magnetic head and information storage device: A magnetic head includes a magnetic pole placed opposite a surface of a recording medium and moving relatively to the surface in a direction along the surface, the magnetic pole generating a magnetic line of force that crosses the surface of the recording medium, and a coil that excites the... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20080055774 - Magnetic head and storage medium drive: A read element is located between lower and upper shielding layers. The read element is connected separately to the lower and upper shielding layers. A first insulating layer and a second insulating layer are located between the lower shielding layer and the slider body. The first insulating layer has a... Agent: Kratz, Quintos & Hanson, LLP

20080055776 - Refurbishing and resale techniques for data storage tape: Techniques are described for reselling and/or refurbishing data tape media. The techniques may involve determining life information associated with a data tape medium and reselling the data tape medium when a remaining life of the data tape medium is larger than a pre-defined threshold. In this manner, the quality of... Agent: Attention: Eric D. Levinson Imation Corp.

20080055777 - Perpendicular magnetic recording media with improved scratch damage performance: A scratch erasure resistant perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface, and a layer stack formed over the surface and comprising: (i) at least one magnetically hard perpendicular magnetic recording layer; and (ii) at least one low shear modulus layer comprising at least one material having... Agent: Seagate Technology LLC C/o Mcdermott Will & Emery LLP

20080055778 - Disk device: A head IC into which a preamplifier and various sensor amplifiers are integrated allows communications such as register setting to the sensor amplifiers even during reading of the preamplifier. Disk device (100) has head IC (1) into which a read/write preamplifier and various sensor amplifiers are integrated, FPC (21), and... Agent: Wenderoth, Lind & Ponack L.L.P.

20080055779 - Head slider having air guiding surface on side rail: A head slider includes a front rail and a pair of rear side rails. Side rails extend from the outflow end of the front rail toward the rear side rails, respectively. Air guiding surfaces are defined within the outward surfaces of the side rails. The air guiding surfaces get far... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080055780 - Head slider: A front rail is located near the inflow end of a slider body. The front rail defines a front air bearing surface at a first height from a reference surface of the slider body. A rear rail located near the outflow end of the slider body. The rear rail defines... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080055781 - Reverse touch lapping process for sliders: Systems and methods for making sliders having larger roll off shapes and smaller pole tip recessions on the overcoat areas of air bearing surfaces (ABS) are provided. In certain example embodiments, at least one row bar may be positioned on a lapping machine's mounting fixture. Each row bar may include... Agent: Nixon & Vanderhye, PC

20080055782 - Method for correcting floating-type magnetic head device mounted in hard disk device: A correcting method for reducing variations in floating height and gram load of a floating-type magnetic head device is disclosed. The floating-type magnetic head device includes a load beam, a flexure that has an elastically flexible tongue piece and disposed in the load beam adjacent to the recording medium, and... Agent: Brinks Hofer Gilson & Lione

20080055783 - Actuator locking system of hard disk drive and method of locking actuator using the same: A hard disk drive (HDD) assembly includes an actuator arm including first and second contact protrusions extending from a rear portion thereof, a latch lever including a rotation axis at which the latch lever rotates and first and second stop portions disposed at predetermined locations on the latch lever to... Agent: Stanzione & Kim, LLP

20080055784 - Thermally assisted magnetic head: A thermally assisted magnetic head has a slider having a medium-facing surface, and a light source unit having a light source support substrate, and a light source disposed on the light source support substrate; the slider has a slider substrate and a magnetic head portion disposed on a side surface... Agent: Oliff & Berridge, PLC

20080055785 - Magnetic disk apparatus and method of manufacturing the apparatus: A magnetic disk apparatus having a highly sensitive reproducing head and a method for manufacturing the magnetic disk apparatus are disclosed. A spin-valve-type multilayer film composed of an antiferromagnetic layer, a ferromagnetic layer, a nonmagnetic layer and a free magnetic layer is used as a magnetoresistive-effect device for the reproducing... Agent: Steptoe & Johnson LLP

20080055786 - Tunnel type magnetic sensor having protective layer formed from pt or ru on free magnetic layer, and method for manufacturing the same: A tunnel type magnetic sensor includes a fixed magnetic layer that has magnetization fixed in one direction, an insulating barrier layer, and a free magnetic layer that has magnetization varied by an external magnetic field, which are laminated in that order from the bottom. The insulating barrier layer is formed... Agent: Brinks Hofer Gilson & Lione

20080055787 - High track density recording head: For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using the write gap layer as the plating seed on which the upper pole was electro-formed so that the width of the GMR pedestal serves to define the device's write track... Agent: Saile Ackerman LLC

20080055788 - Perpendicularly feeding type magnetic head having adjustable input impedance, manufacturing method thereof, head suspension assembly, and magnetic storage device: This invention provides a magnetic head having adjustable input/output impedance, and also provides a manufacturing method of the same, a head suspension assembly and a magnetic storage device. The magnetic head has a perpendicularly feeding type magnetoresistive element, a pair of electrodes, a pair of first conductive wires for electrically... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20080055789 - Magnetic random access memory device using current induced switching: Provided is a magnetic memory device that uses a current induced switching (CID) method. The magnetic memory device that uses a CID method includes a lower electrode, a magnetic resistance structure that is formed on the lower electrode which comprises a free layer whose widths of two sides are varied,... Agent: Harness, Dickey & Pierce, P.L.C

20080055790 - Transplanted magnetic random access memory (mram) devices on thermally-sensitive substrates using laser transfer and method of making the same: A method of forming a magnetic memory device (and a resulting structure) on a low-temperature substrate, includes forming the memory device on a transparent substrate coated with a decomposable material layer subject to rapid heating resulting in a predetermined high pressure, and transferring the memory device to the low-temperature substrate.... Agent: Mcginn Intellectual Property Law Group, PLLC

20080055791 - Current perpendicular to plane magnetoresistive head: Embodiments of the present invention aim suppress the generation of spin torque noise in a current perpendicular to plane magnetoresistive head. According to one embodiment, when sensing current is applied to a current perpendicular to plane magnetoresistive head from a free layer toward a first pinned layer, a configuration wherein... Agent: Townsend And Townsend And Crew LLP

20080055794 - Magnetoresistive sensor having shape enhanced pinning and low lead resistance: A magnetoresistive sensor having a pinned layer that extends beyond the free layer in the stripe height direction for improved shape enhanced pinning. The sensor includes hard bias layers and leads that extend in the stripe height direction beyond the stripe height of the free layer, providing increased conductive material... Agent: Zilka-kotab, PC

20080055793 - Magnetoresistance effect device: A magnetoresistance effect device including a multilayer structure having a pair of ferromagnetic layers and a barrier layer positioned between them, wherein at least one ferromagnetic layer has at least the part contacting the barrier layer made amorphous and the barrier layer is an MgO layer having a highly oriented... Agent: Buchanan, Ingersoll & Rooney PC

20080055792 - Memory cells and devices having magnetoresistive tunnel junction with guided magnetic moment switching and method: A magnetoresistive memory cell includes a magnetic tunnel junction (MTJ). The MTJ includes a magnetic layer having a pinned magnetic moment, a tunneling layer, and a free layer. The free layer includes first and second ferromagnetic layers having respective first and second free magnetic moments, which are anti-ferromagnetically coupled to... Agent: Dinsmore & Shohl LLP