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Dynamic magnetic information storage or retrieval May archived by USPTO category 05/09

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
05/28/2009 > patent applications in patent subcategories. archived by USPTO category

20090135512 - Electrical current as probe for modulation at head-disk interface: A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage... Agent: Kenyon & Kenyon LLP

20090135513 - Magnetic recording medium, magnetic storage and method for reproducing information from magnetic recording medium: A magnetic recording medium includes a first magnetic layer; and a second magnetic layer formed on the first magnetic layer. The first magnetic layer and the second magnetic layer make exchange coupling therebetween and also, have their magnetizing direction in anti-parallel to one another. A net residual area magnetization of... Agent: Greer, Burns & Crain

20090135515 - Disk apparatus and information recording disk: One aspect of the embodiments utilizes a disk apparatus employing a ramp loading method, which includes a ramp member having an overlapping portion with which a part of a disk having an information recording surface and a lateral side overlaps, and a groove is formed on the entire lateral side... Agent: Fujitsu Patent Center C/o Cpa Global

20090135516 - Disk drive device and servo control method thereof: Embodiments of the present invention help to perform appropriate servo control in response to detected vibration in a disk drive device having a vibration sensor. In an embodiment of the present invention, an HDD switches a correction servo mode to perform vibration correction in head positioning and a normal servo... Agent: Townsend And Townsend And Crew LLP

20090135517 - Magnetic disk unit and manufacturing method thereof: Embodiments of the present invention relate to a method for manufacturing a magnetic disk unit, the method including a step of writing servo data into the magnetic disk while introducing a low-density gas having a lower density than air into the enclosure. In one embodiment, the magnetic disk unit is... Agent: Townsend And Townsend And Crew LLP

20090135514 - Method and apparatus for reducing coupled hard disk drive vibration: Some embodiments of the present invention provide a system that includes a first hard disk drive (HDD) and a second HDD. Within this system, the first HDD is coupled to the second HDD in a non-parallel configuration, which reduces rotational vibration transmitted between the first HDD and the second HDD.... Agent: Pvf -- Sun Microsystems Inc. C/o Park, Vaughan & Fleming LLP

20090135518 - Discrete track magnetic media with domain wall pinning sites: A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves.... Agent: Intellectual Property Group Fredrikson & Byron, P.A.

20090135519 - Magnetic recording medium, method and apparatus for manufacturing magnetic recording apparatus: A magnetic recording medium includes a disk substrate, and recording cells arrayed on the disk substrate in a track direction, the recording cells includes a ferromagnetic pattern and a magnetic pattern formed on one of two sidewalls of the ferromagnetic pattern in the track direction and having a lower crystalline... Agent: Nixon & Vanderhye, PC

20090135520 - Magnetic tape head: A magnetic tape head has a base substrate, a magnetic head layer formed on the base substrate, and a closure piece formed on the magnetic head layer. The distance from a first plane comprising a point on the tape bearing surface of the base substrate to a third plane comprising... Agent: Oliff & Berridge, PLC

20090135522 - Flying head slider and magnetic disk apparatus: A pair of side pads, which are arranged to face each other by having a negative pressure generating part in the direction orthogonal to an air flow direction of a slider therebetween, are made to have three or more steps, respectively. Of the respective surfaces having the plural steps, the... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090135521 - Protective film forming method: To provide a high-quality protection target by forming a protective film that is thin and excellent in corrosion resistance. Provided is a protective film forming method for forming a protective film at least on a surface of a protection target. The method comprises: a base film forming step for forming... Agent: Nixon & Vanderhye, PC

20090135523 - Microactuator, head gimbal assembly, and disk drive device: Embodiments of the present invention relate to approaches to effectively let noise on a head slider bonded to a silicon substrate of a microactuator, escape to the ground. A head gimbal assembly (HGA) according to an embodiment of the present invention comprises a microactuator bonded to a gimbal tongue. The... Agent: Townsend And Townsend And Crew LLP

20090135524 - Magnetic head driving circuit, magnetic recording/reproducing device and reproducing head protection method: A magnetic recording and reproducing device is a hard disk device which writes information onto a magnetic disk (not shown), or reads information therefrom, and includes: a reproducing head; a recording head; and a magnetic head driving circuit. The magnetic head driving circuit is a circuit, by which driving of... Agent: Cantor Colburn, LLP

20090135525 - Suspension, head gimbal assembly, and disk drive unit with the same: A suspension includes a flexure, a load beam, and a deformation-resistant plate positioned between the flexure and the load beam. The deformation-resistant plate has a holding plate portion for holding a slider through the flexure and a pair of beam portions. The beam portions each have a bent portion bent... Agent: Nixon & Vanderhye, PC

20090135527 - Magnetic recording media and method of fabricating the same: A magnetic recording medium and a method of manufacturing the magnetic recording medium are provided. In order to increase the recording density of the magnetic recording medium, the magnetic recording medium is configured to multiple magnetic layers by consecutively forming a first magnetic layer having a thin film shape and... Agent: Sughrue Mion, PLLC

20090135526 - Magnetoresistive device: The device comprises two magnetoresistive elements (10, 20) placed relative to each other in magnetostatic interaction in such a manner that a magnetic flux passing between these elements (10, 20) closes through soft ferromagnetic layers (26, 27) of said elements (10, 20). A write device (15) is associated with the... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20090135528 - Magnetic reader with piggybacked fence: A magnetic head comprises a plurality of elements selected from a group consisting of readers and writers. A servo sensor is positioned towards the elements, the servo sensor being adapted for sensing a first servo track of a magnetic medium. A fence is positioned towards the servo sensor and aligned... Agent: Zilka-kotab, PC- Ibm

20090135530 - Magnetic head for perpendicular magnetic recording and method of manufacturing same: A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field. A shield includes a first layer having an end face located in the medium facing... Agent: Oliff & Berridge, PLC

20090135529 - Magneto-resistive effect device of the cpp type, and magnetic disk system: The invention provides a magneto-resistive effect device of the CPP (current perpendicular to plane) structure, comprising a magneto-resistive effect unit, and a first shield layer and a second shield layer located and formed such that the magneto-resistive effect unit is sandwiched between them, with a sense current applied in a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
05/21/2009 > patent applications in patent subcategories. archived by USPTO category

20090128940 - Method and system for compensating for tape deformation: A method for compensating for tape deformation in a tape drive includes determining location of deformation on a tape; processing the tape in a first manner before and after the deformation; and processing the tape proximate the deformation in a second manner different than the first manner. The step of... Agent: Brooks Kushman P.C. / Sun / Stk

20090128942 - Method for determining wear of a data storage medium and data storage device: The invention relates to a method of determining wear of a data storage medium actively by performing a read operation on the data storage medium and detecting a read signal, comparing the read signal to at least one wear threshold; and determining a wear level of an area of the... Agent: Harrington & Smith, PC

20090128943 - Test method and manufaturing method of disk drive device in consideration of manufacturing efficiency: Embodiments of the present invention help to improve test processes for hard disk drives (HDDs) and increase the manufacturing efficiency of HDDs. According to one embodiment, a test process performs a test on an HDD with respect to a plurality of items and stores one or a plurality of test... Agent: Townsend And Townsend And Crew LLP

20090128941 - Write head tester using inductance: A write head is tested by measuring the effect that magnetic fields have on the inductance of the write head. For example, a perpendicular write head may be placed in a magnetic field with a first angle, e.g., non-parallel and non-perpendicular, to the air bearing surface and the inductance is... Agent: Silicon Valley Patent Group LLP

20090128944 - Hard disk drive tunneling magnetoresistive annealing heads with a fly on demand heater: A hard disk drive that includes a head coupled to a disk. The head has a heater element. The drive also includes a controller that causes the heater element to heat the head to a temperature sufficient to anneal material within the head. The head is heated to a temperature... Agent: Irell & Manella LLP

20090128945 - Data protection based on system vibration modes: An aspect of the present disclosure relates to implementing a data protection mode based on system vibration modes in a data supported system. An exemplary system vibration mode is associated with an operating mode of the data supported system. The data protection mode operates to limit, or prevent, errors caused... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090128946 - Discontinuous mode back emf measurement: A terminal voltage of an actuator motor is measured while the actuator motor is in a high impedance state. An internal voltage of the actuator motor is measured, and a back-EMF voltage of the actuator motor is estimated in response to the terminal voltage of the actuator motor and the... Agent: Myers Bigel Sibley & Sajovec, P.A.

20090128947 - Disk drive determining operating fly height by detecting head disk contact from disk rotation time: A disk drive is disclosed including a disk having a plurality of tracks, wherein each track comprises a plurality of data sectors and a plurality of servo sectors. The disk drive further comprises a spindle motor for rotating the disk, and a head actuated radially over the disk, wherein the... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20090128948 - Methods and apparatus to control heat dissipation in hard-disk drives: Methods and apparatus to control heat dissipation in hard-disk drives (HDDs) are disclosed. A disclosed example apparatus comprises a semiconductor die, a ground bump positioned on the die, and a hard-disk drive writer head positioned on the die relative to the ground bump based on a thermal impedance.... Agent: Texas Instruments Incorporated

20090128949 - Head apparatus, drive apparatus, and tracking method: A head apparatus includes: a head unit where a plurality of magnetic elements, which carry out reproducing and/or recording on data tracks on a magnetic tape, are disposed at equal intervals on a first straight line; a moving mechanism that moves the head unit; and a controller that carries out... Agent: Greenblum & Bernstein, P.L.C

20090128950 - High aspect ratio motion limiter of a microactuator and method for fabrication: A high-aspect ratio motion limiter of a microactuator and a method for fabrication are disclosed. In one embodiment, at least one low-aspect ratio gap is created in a substrate of a microactuator of a hard disk drive. The low-aspect ratio gap is then utilized to facilitate the creation of a... Agent: Hitachi C/o Wagner Blecher LLP

20090128951 - Electronic information storage apparatus with non-lubricated media: Described herein are various embodiments of an electronic information storage apparatus and an associated method and system. For example, according to one illustrative embodiment, a disk drive comprises a base and at least one disk that are rotatably attached to the base. The at least one disk can include a... Agent: Kunzler & Mckenzie

20090128952 - Magnetic head, head assembly and magnetic recording/reproducing apparatus: The present invention relates to a perpendicular recording magnetic head. A main magnetic pole film includes an electrode film and a plated magnetic film. The electrode film includes a Ru film and a conductive magnetic film, and the Ru film, which follows the shape of an inner wall surface of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090128953 - Perpendicular magnetic write head with stitched notched trailing shield: A magnetic write head for perpendicular magnetic recording having a stitched notched trailing shield. The trailing shield includes a first pedestal portion having sides that are self aligned with the sides of the write pole and having a back edge that extends a first shield throat height. The shield further... Agent: Zilka-kotab, PC- Hit

20090128954 - Electrical lapping guide for magnetic tape heads: An electrical lapping guide for a magnetic tape head is provided with a resistive transverse stripe with a longitudinal height affixed to a substrate. A pair of leads extend from the stripe with a notch formed therebetween. The notch has a height corresponding to a lapping target limit for associated... Agent: Brooks Kushman P.C. / Sun / Stk

20090128955 - Data storage tape cartridge housing characterized by an absence of removable fasteners: A data storage tape cartridge includes first and second housing sections. The first housing section includes a plurality of posts while the second housing section includes a plurality of receptacles. The plurality of receptacles is configured to receive and couple to a respective one of the plurality of posts to... Agent: Imation Corp.

20090128956 - Disk apparatus: The disk apparatus according to the present invention includes a tray which is elevationally movably disposed within a casing of apparatus integrating a disk reproducing system mechanism and holds a disk to be reproduced thereon, and the tray is provided with a disk supporting section supporting the peripheral edge of... Agent: Birch Stewart Kolasch & Birch

20090128957 - Connecting apparatus adapted in a conjunctive structure: A connecting apparatus adapted in a conjunctive structure is provided. The conjunctive structure comprises a baseboard, a peripheral element and a connecting apparatus. The connecting apparatus comprises at least one first connecting element and at least one second connecting element. The first connecting element is a magnetic element and is... Agent: Rabin & Berdo, PC

20090128958 - Master carrier for magnetic transfer and magnetic recording medium manufactured using the same: A magnetic transfer master substrate for transferring magnetic information thereof to a perpendicular recording magnetic recording medium in contact therewith under application of a magnetic field comprises a transfer surface area with a magnetic layer formed thereon in a pattern according to the magnetic information to be transferred to the... Agent: Young & Thompson

20090128959 - Self psa adjustment using thermal adapter on suspension for improving takeoff in hot/wet environment: A suspension arm assembly for a hard disk drive that includes a suspension arm and a thermal adaptor. The thermal adaptor has a thermal coefficient of expansion that is different from the thermal coefficient of expansion of the suspension arm so that a pitch static angle is increased with an... Agent: Irell & Manella LLP

20090128960 - Thin plate formation method, thin plate and suspension correction apparatus, and correction method: Laser beam irradiation areas are provided in a load curve portion and an angle adjustment portion of a suspension. The laser beam irradiation areas are oriented in a direction in which the suspension is to be bent. A laser beam having a predetermined length and a predetermined shape is irradiated... Agent: Edwards Angell Palmer & Dodge LLP

20090128961 - Disk apparatus: In a disk apparatus, an actuator includes a magnetic plate member which generates a magnetic attraction force for turning the actuator in the unloading direction by interaction with a stationary magnet. The plate member is superposed on the stationary magnet in the plane direction while keeping a gap with the... Agent: Greer, Burns & Crain

20090128963 - Narrow track extraordinary magneto resistive [emr] device with wide voltage tabs and diad lead structure: A Lorenz magnetoresistive sensor having a pair of voltage leads and a pair of current leads. The voltage leads are located at either side of one of the current leads and are separated by a distance that is substantially equal to the length of a bit to be measured. The... Agent: Zilka-kotab, PC- Hit

20090128962 - Read-head, magnetic head and magnetic storage apparatus: The read-head is capable of corresponding to high recording density without deteriorating characteristics even if a small size read-element is used. The read-head of the present invention comprises: a read-element including a free layer; and a magnetic domain control layer for domain-controlling the free layer. The magnetic domain control layer... Agent: Greer, Burns & Crain

20090128964 - Method for manufacturing a perpendicular magnetic write head with wrap around magnetic trailing and side shields: A method for manufacturing a magnetic write head having a wrap around magnetic shield. The method allows a highly accurate short wavelength such as 193 mm photolithography to be used to accurately define the placement and critical dimension of wrap around magnetic shield. The method includes the formation of a... Agent: Zilka-kotab, PC- Hit

20090128965 - Cpp magneto-resistive element provided with a pair of magnetic layers and nicr buffer layer: A magnetic field detecting element has a stack which includes a NiCr layer, a first magnetic layer whose magnetization direction varies in accordance with an external magnetic field, a non-magnetic spacer layer, and a second magnetic layer whose magnetization direction varies in accordance with the external magnetic field, said NiCr... Agent: Knobbe Martens Olson & Bear LLP

20090128966 - Magnetic memory cell based on a magnetic tunnel junction(mtj) with low switching field shapes: Embodiments of the invention magnetic memory device, comprising: a magnetic tunnel junction (MTJ) which includes a Magnetic Tunnel Junction (MTJ) stack which has one of a crescent-shaped profile and an elbow-shaped profile in cross-section.... Agent: Hahn And Moodley, LLP

  
05/14/2009 > patent applications in patent subcategories. archived by USPTO category

20090122434 - Head ic, read circuit and media storage device: A head IC, which adjusts an amplitude level of a read signal of a head, for outputting to a read channel having an AGC amplifier, includes: a differential amplifier; an AGC circuit; external gain setting sections; and a switch. Since the AGC amplifier is disposed in the head IC, the... Agent: Greer, Burns & Crain

20090122435 - Head control method, control device, and storage device: It is related to a head control method. The head control method controls a protruding flying height of a head in which an energization amount applied to a heater element in the head to thermally expands the head. The head control method includes a resistance-value measuring step of measuring a... Agent: Greer, Burns & Crain

20090122436 - Control of transducer to tape spacing: A tape drive apparatus for reading and writing data on a magnetic tape includes at least one transducer that interacts with the magnetic tape. A temperature control element is positioned to thermally expand the transducer. A control system controls the amount of current supplied to the temperature control element. A... Agent: Brooks Kushman P.C. / Sun / Stk

20090122438 - Design of feedforward controller for controlling position of magnetic head in magnetic disk drive: For a feedforward controller for controlling a position of a magnetic head in a magnetic disk drive, a vibration of the magnetic head is measured in a state in which a magnetic disk is rotated in the magnetic disk drive. From a spectrum of the measured vibration, a flutter frequency... Agent: Greer, Burns & Crain

20090122437 - Fly height adjustment device calibration: A method for calibrating a fly height adjustment device comprises flying a magnetic transducer coupled with a head gimbal assembly at a fly height from a magnetic recording data track. The magnetic transducer is coupled with a fly height adjustment device. Read-back signal amplitude is read from the magnetic recording... Agent: Hitachi C/o Wagner Blecher LLP

20090122439 - Mitigating the effects of disturbances of a disk drive: Embodiments of mitigating the effects of disturbances of a disk drive are disclosed. One method includes sensing a position error signal of a transducer coupled to a surface of the disk drive, wherein the position error signal aids in control of an actuator of the disk drive. A first disturbance... Agent: Sensor Platforms, Inc. Patent Department

20090122440 - Repeated runout error compensation using iterative feedback: Various embodiments of the present invention are generally directed to adaptively determining an updated repeated runout (RRO) correction value to correct for RRO error in the placement of a servo seam, by iteratively combining a weighted initially estimated RRO correction value for the seam with a position error signal (PES).... Agent: Fellers, Snider, Blankenship, Bailey & Tippens

20090122441 - Bit patterned magnetic media data format: In an implementation, a media drive comprises bit patterned magnetic media and one or more modules. The one or more modules are to cause data to be written on the bit patterned magnetic media in a data sector that includes a synchronization mark disposed between data blocks of the data... Agent: Sadler, Breen, Morasch & Colby, Ps

20090122442 - Anticipatory track switching: Various embodiments of the present invention are generally directed to using a transducer to transfer data during a transducer displacement operation at a time during such operation when the transducer is substantially stationary.... Agent: Fellers, Snider, Blankenship, Bailey & Tippens

20090122443 - Disk drive carrier assembly and method: A disk drive carrier assembly for carrying plural disk drives is provided. The assembly has a casing having first and second opposed ends, opposed sides, a top and a bottom. Drive cards are provided in the casing. Each drive card has a disk drive receiving portion for receiving a disk... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090122444 - Method of reliable usage of dynamic fly-height control at environmental extremes: A method of dynamic fly-height control in a disk drive, comprising measuring current environmental parameters, determining an operation heater power based on the current environmental parameters, and applying the operation heater power to adjust the fly-height of a head. Using the current environmental parameters to interpolate an estimated current touch... Agent: Procopio, Cory, Hargreaves & Savitch LLP

20090122445 - Perpendicular magnetic recording write head with flux shaping layers on the write pole and magnetic recording system incorporating the write head: A perpendicular magnetic recording write head has at least one flux shaping layer located on the write pole. The write pole has an end located substantially at the surface of the head carrier that faces the recording medium. The write head includes a main pole, on which the write pole... Agent: Thomas R. Berthold

20090122446 - Data storage tape guiding system: A data storage tape guiding system is configured to guide a data storage tape along a tape path crossing a read/write head. The data storage tape guiding system includes data storage tape supply components and data storage tape take-up components. An entirety of the supply components is disposed on a... Agent: Attention: Eric D. Levinson Imation Corp.

20090122447 - Disk device: A disk drive includes a magnetic recording medium rotatably supported, a spindle motor for spinning the recording medium, a slider having a head, a supporting arm having the slider at a first end facing the recording medium, a bearing for holding the supporting arm rotatably along a recording surface of... Agent: Ratnerprestia

20090122448 - Glass substrate for magnetic disk apparatus: A main surface of a glass substrate for a magnetic disk is disk-shaped and has a ski jump on an outer peripheral end portion of the main surface opposing a magnetic head slider to be loaded. A rate of change of angles of tangents to a slope of the ski... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090122449 - Magnetic write head and method of manufacturing the same: A magnetic write head includes a main pole, a return yoke forming a magnetic path with the main pole, a side shield formed at both sides of the main pole, and a shield gap layer formed between the side shield and the return yoke. The side shield and the return... Agent: Sughrue Mion, PLLC

20090122450 - Tmr device with low magnetostriction free layer: A high performance TMR sensor is fabricated by employing a free layer comprised of CoBX with a λ between −5×10−6 and 0 on a MgOX tunnel barrier. Optionally, a FeCo/CoBX free layer configuration may be used where x is about 1 to 30 atomic %. Trilayer configurations represented by FeCo/CoFeB/CoBX,... Agent: Saile Ackerman LLC

  
05/07/2009 > patent applications in patent subcategories. archived by USPTO category

20090116133 - Logic operations on a hard disk drive: A method of how to perform logic operations on a hard disk drive with magnetic media capable of superimposing the binary information is invented. Such media contain magnetic particles with different anisotropy fields and different anisotropy axes orientations. Three magnetization states are utilized. The binary information is encoded as 0−>... Agent: Vladimir L. Safonov

20090116134 - Methods and apparatus for controlling write driver current: A hard disk drive write driver circuit is described that can change the output impedance of the write driver by use of a lookup table of control values. A control value is selected from the lookup table by using an address based on a dynamic system variable and a program... Agent: Mendelsohn & Associates, P.C.

20090116138 - Disk drive and controlling method thereof: Embodiments of the present invention provide a disk drive capable of appropriately measuring non-linearity in a head position control system, and a control method therefor. According to one embodiment, a magnetic disk drive inputs a reference signal SR into a voice coil motor, inputs into the voice coil motor a... Agent: Townsend And Townsend And Crew LLP

20090116139 - Hard disk drive protection system and method: A hard disk drive protection system comprises a sensor configured to detect an impending shock event and a hard drive protection module configured to determine whether to issue a fast park command for a hard disk drive in response to detecting the impending shock event based on a permissible quantity... Agent: Hewlett Packard Company

20090116135 - Head positioning assembly: A head positioning assembly having a first carriage assembly, a second carriage assembly, and an actuator. The second carriage assembly has a head and is coupled to the first carriage assembly by a first flexible member. The first and second carriage assemblies may be actuated to position the head when... Agent: Brooks Kushman P.C. / Sun / Stk

20090116137 - Perpendicular magnetic recording medium and magnetic storage apparatus using the same: Embodiments of the present invention provide a perpendicular magnetic recoding medium capable of decreasing exchange coupling between crystal grains while suppressing increase in the crystal grain size of the magnetic recording layer. According to one embodiment, a perpendicular magnetic recoding medium is formed by stacking a seed layer, an intermediate... Agent: Townsend And Townsend And Crew LLP

20090116136 - Vibration detection and compensation filter: The application relates to an adaptive vibration damping scheme that provides for detection of, and adjustment for, vibration-related disturbances in devices. The vibration damping scheme utilizes a common filter function to implement vibration detection and vibration compensation.... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090116140 - System for adjusting misalignment between a read/write head and a flexible data storage media: A system for adjusting misalignment between a read/write head and a flexible data storage media is provided. The system includes a head carriage assembly, a linear assembly that includes a pivot member pivotably supporting the head carriage assembly, and a magnetic, assembly coupled to the head carriage assembly. Current is... Agent: International Business Machines Corporation

20090116141 - Apparatus, system ,and method for controlling out-gassing and humidity in a closed space-constrained environment: An apparatus, system, and method are disclosed for controlling out-gassing and humidity in a closed space-constrained environment. In particular, an environment control device is disclosed which is made using thermoforming techniques such that the walls of the device are much thinner than other conventional devices. This allows for the device... Agent: Kunzler & Mckenzie

20090116142 - Disk device: In a disk device, an arm for supporting a head includes upper and lower plates that are located parallel to a surface of a magnetic disk. The lower plate has a linear expansion coefficient greater than that of the upper plate. The upper and lower plates are provided with an... Agent: Posz Law Group, PLC

20090116143 - Thin-film magnetic head, head gimbal assembly, and hard disk system: A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090116144 - Perpendicular magnetic recording head and method of manufacturing the same: Provided are a perpendicular magnetic recording head and a method of manufacturing the same. The perpendicular magnetic recording head includes a main pole including a pole tip applying a recording magnetic field to a recording medium, a coil surrounding the main pole in a solenoid shape such that recording magnetic... Agent: Sughrue Mion, PLLC

20090116145 - Perpendicular shield pole writer with tapered main pole and tapered non-magnetic top shaping layer: A PMR writer with a tapered main pole layer and tapered non-magnetic top-shaping layer is disclosed that minimizes trailing shield saturation. A second non-magnetic top shaping layer may be employed to reduce the effective TH size while the bulk of the trailing shield is thicker to allow a larger process... Agent: Saile Ackerman LLC

20090116146 - Recording-medium driving device: When a medium casing is properly inserted, a first pair of projections and a second pair of projections are passed through between a first bottom surface and a second bottom surface of a chassis in the moving direction and are thus prevented from coming into contact with the first and... Agent: Beyer Law Group LLP

20090116147 - Perpendicular magnetic recording disk having a permeability gradient: Perpendicular magnetic recording disks and methods of fabricating perpendicular magnetic recording disks are described. The perpendicular magnetic recording disk includes a soft magnetic uniderlayer (SUL) structure, an interlayer, and a perpendicular magnetic recording layer. The SUL structure has an increased permeability from an inner radius of the disk to an... Agent: Duft Bornsen & Fishman, LLP

20090116148 - Hydrodynamic bearing device and spindle motor equipped with same, and information apparatus: A hydrodynamic bearing device (30) comprises a shaft (31), a sleeve (32) in which the shaft (31) is installed so as to be able to rotate in relative fashion, a lubricant (34) filled into a minute gap between the shaft (31) and the sleeve (32), a sleeve cover (35) attached... Agent: Wenderoth, Lind & Ponack L.L.P.

20090116149 - Magnetic head slider manufacturing method: To provide a manufacturing method which can adjust the lengths of a recording element and a reproducing element for enabling manufacture of high-quality magnetic head sliders. The manufacturing method comprises: a stacked-layer forming step which stacks magnetic heads on a substrate; a lapping step which cuts out a bar block... Agent: Nixon & Vanderhye, PC

20090116150 - Suspension board with circuit: A suspension board with circuit includes a metal supporting board, an insulating layer formed on the metal supporting board, a conductive layer formed on the insulating layer, and a pedestal for supporting a slider. The pedestal includes a lower pedestal made of the insulating layer, and formed in a continuous... Agent: Akerman Senterfitt

20090116151 - Position sensor and bias magnetic field generating device: Disclosed herein is a position sensor including, a magnetic recording medium including two incremental layers and an absolute layer, the absolute layer provided between the incremental layers, each of the layers having magnetic information recorded therein, and a magnetic detection section including three magnetoresistance effect devices opposite to the layers... Agent: Sonnenschein Nath & Rosenthal LLP

20090116152 - Multilayer stitched yoke for a high data rate perpendicular write head: A magnetic write head for perpendicular magnetic data recording having a write pole that is sandwiched between first and second magnetic shaping layers. The split shaping layers allow a laminated shaping layer structure allows a manufacturable laminated shaping layer to be constructed for improved data rate. One of the magnetic... Agent: Zilka-kotab, PC- Hit

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