Dynamic magnetic information storage or retrieval inventions 10/07

20070247734 - Manufacturing method of recording medium, electric/magnetic field copy master and electric/magnetic field copying device: When copying servo information from an electro-magnetic field copy master to a vertical storage medium, the magnetization direction of the vertical storage medium is made to the direction the reverse of an external electro-magnetic field applied to the vertical storage medium and the electro-magnetic field copymaster, the vertical storage medium... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070247736 - Disk drive apparatus and method for writing and/or reading user data thereof: Embodiments in accordance with the present invention suppress an adverse influence on a pattern of a magnetic disk due to its rotational jitter and write the pattern at more accurate timing. In accordance with one embodiment, a hard disk controller/microprocessing unit (HDC/MPU) controls a clock frequency of a data clock... Agent: Townsend And Townsend And Crew LLP

20070247740 - Disk drive and calibration method for the same: In an embodiment of the present invention, a Hard Disk Controller Microprocessing Unit (HDC/MPU) supplies, prior to the unloading process, different currents to a VCM, with an actuator positioned in place and kept at a standstill. The HDC/MPU determines a correction factor from VCM speeds vmeas, each of which is... Agent: Townsend And Townsend And Crew LLP

20070247743 - Disk drive and control method therefor: Embodiments in accordance with the present invention provide a disk drive capable of verifying whether the speed of an actuator is true or not, the speed being detected while the actuator is being moved between a retracted position and a recording surface of a magnetic disk, and to provide a... Agent: Townsend And Townsend And Crew LLP

20070247744 - Disk drive and control method thereof: Embodiments in accordance with the present invention reduce the structural stress applied to a head, and to achieve the effective control, when the clearance between the head and a disk is adjusted by using a heater. According to one embodiment, the hard disk controller/microprocessing unit (HDC/MPU) controls a slew rate... Agent: Townsend And Townsend And Crew LLP

20070247739 - Information recording/reproduction apparatus, head levitation height control method and head levitation control circuit: An information recording/reproduction apparatus having a head 41 that performs recording or reproduction of information on/from a recording medium, comprises: a drive section 43a that changes the levitation height of the head 41 relative to the recording medium based on a first drive method; a drive section 43b that changes... Agent: Kratz, Quintos & Hanson, LLP

20070247742 - Method and apparatus for writing pattern on disk: Embodiments in accordance with the present invention ensure that the pitch of a servo write track is accurately controlled. According to one embodiment of the present invention, a Self Servo Write (SSW) uses different methods and sequences to identify read-write offsets (RWOs) and calculate target positions in inner and outer... Agent: Townsend And Townsend And Crew LLP

20070247741 - Method of servo pattern writing on recording surface and data storage device: In an embodiment of the present invention, with Self Servo Write (SSW), a head slider is used to perform AC erase to a recording surface of a magnetic disk. The AC erase is performed asynchronously to every track. A frequency for use with AC erase, i.e., a frequency of an... Agent: Townsend And Townsend And Crew LLP

20070247738 - Write-once type storage apparatus, control method and record control circuit: In a write-once type storage apparatus, a head having a recording element and a recording element is supported at the leading end of a rotary actuator, and information written once in a disk medium by the head is then reproduced. A write processing unit writes information sequentially from a track... Agent: Greer, Burns & Crain

20070247735 - Systems and methods for accessing data from a variable polarity head assembly: Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data set, and sampling the data set using positive synchronization to create one data set and negative synchronization to create... Agent: Hamilton And Desanctis

20070247737 - Stable time domain radial self-servo write propagation: Embodiments of the present invention provide an approach in the time domain, instead of the frequency domain, for analyzing and correcting for radial propagation instability in servo-writing. In one embodiment, a system for controlling a read/write head of a disk drive to correct propagation errors during self-servo writing on a... Agent: Townsend And Townsend And Crew LLP

20070247745 - Magnetic head and magnetic disk device: As the surface of a main pole facing a magnetic disk, one with a rectangle-shaped part whose width in a radius direction consecutively changes in a direction orthogonal to the radius direction of the magnetic disk is adopted. The rectangle-shaped part has two sides facing each other in the orthogonal... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070247746 - Perpendicular magnetic recording write head with notched trailing shield and method for making: A perpendicular magnetic recording write head has a write pole, a trapezoidal-shaped trailing shield notch, and a gap between the write pole and notch, with the gap being formed of a nonmagnetic mask film, such as alumina, a nonmagnetic metal protective film and a nonmagnetic gap layer. The write pole... Agent: Thomas R. Berthold

20070247747 - Tapered write pole for reduced skew effect: A write pole for a read/write head of a disk drive system has a tapered surface on a leading edge thereof. Preferably, the tapered surface has a taper angle of between 0 and 20 degrees from a plane normal to the ABS. By having a write pole with a taper... Agent: Foley & Lardner

20070247752 - Perpendicular magnetic head: w

20070247753 - Thin film magnetic head substrate with monitor element: A thin film magnetic head substrate includes a plurality of head element portions having read elements and write elements in rows. Adjacent head element portions interpose a read monitor element and a write monitor element that are used as element resistance monitors for the read element and the write element... Agent: Brinks Hofer Gilson & Lione

20070247750 - Magnetic write head design for reducing temperature induced protrusion: A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality... Agent: Zilka-kotab, PC

20070247748 - Perpendicular magnetic recording system with medium having thin soft underlayer and recording head having thick-throat trailing shield: A perpendicular magnetic recording data storage system combines a perpendicular medium that has a thin low-magnetic-permeability or “soft” underlayer (SUL) with a recording head that has a trailing shield (TS) with a thick throat height, i.e., a thickness in a direction orthogonal to the recording layer of the medium. The... Agent: Thomas R. Berthold

20070247749 - Structure and method for reduced corrosion of auxiliary poles during the fabrication of perpendicular write heads: A method and structure for reducing corrosion during the manufacture of perpendicular write heads is disclosed. Auxiliary pole structures (otherwise known as trailing shields and wrap around shields) are susceptible to corrosion due to their iron containing composition and small dimensions. The impact of corrosion can be reduced by utilizing... Agent: D'arcy H. Lorimer

20070247751 - Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system: A magnetic structure for use in a magnetic head for avoiding wide angle track erasure and other forms of adjacent track interference. The magnetic structure includes a trailing shield having a specially configured back edge opposite the air bearing surface ABS. The magnetic shield has a shallow substantially constant throat... Agent: Zilka-kotab, PC

20070247754 - Hub lock/head cleaning dual purpose mechanism: An exemplary embodiment provides for a tape drive that includes one or more processors, a memory and a mechanism for locking a hub and cleaning a magnetic head. The mechanism includes a plate a brush mount assembly rotatably coupled to the plate wherein the brush mount assembly includes a brush... Agent: Law Office Of Mark J. Spolyar

20070247755 - Slider device, system and method: A slider device includes a tab capable of movement in a first linear direction and a second linear direction. A first spring and second spring are each disposed adjacent the tab. The first and second springs are capable of biasing the tab into a biased position. The first spring is... Agent: Holland & Knight LLP

20070247756 - Perpendicular magnetic recording medium: A perpendicular magnetic recording medium includes: a substrate; a soft magnetic film formed on the substrate; a non-magnetic film including an amorphous interlayer formed on the soft magnetic film and made from a metallic material selected from terbium, gadolinium, dysprosium, tantalum, hafnium, and combinations thereof, a buffer layer formed on... Agent: Christie, Parker & Hale, LLP

20070247757 - Customizable cartridge for protecting a readable and/or writable data storage medium: The invention relates to a cartridge for protecting a readable and/or writable data storage medium, such as an optical disk. The cartridge comprises a first cartridge part (1) for containing the data storage medium and a second cartridge part (2) connected to the first cartridge part and projecting therefrom. The... Agent: Philips Intellectual Property & Standards

20070247758 - Magnetic head slider and head gimbals assembly: According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusion attributable to heat generated by a recording current... Agent: Townsend And Townsend And Crew LLP

20070247759 - Suspension for disc drive: A suspension for disc drive has a load beam, a flexure, and a slider. The slider is mounted on a tongue portion of the flexure. When a disc rotates, air flows from an air inflow end (leading side) toward an outflow end (trailing side), whereupon an air bearing is formed... Agent: Frishauf, Holtz, Goodman & Chick, PC

20070247760 - Suspension for disc drive: A suspension for a disc drive has a load beam, a flexure, a slider, etc. A tongue portion and a pair of outrigger portions are formed on the flexure. Slits are formed between the outrigger portions and opposite side edges of the tongue portion. The tongue portion and the outrigger... Agent: Frishauf, Holtz, Goodman & Chick, PC

20070247761 - Micro-actuator for hard-disk drive, and manufacturing process thereof: A micro-electro-mechanical device formed by a body of semiconductor material having a thickness and defining a mobile part and a fixed part. The mobile part is formed by a mobile platform, supporting arms extending from the mobile platform to the fixed part, and by mobile electrodes fixed to the mobile... Agent: Graybeal, Jackson, Haley LLP

20070247762 - Head gimbal assembly and disk drive unit with the same: A HGA of the invention includes a micro-actuator, a slider and a suspension to support the micro-actuator and the slider. The suspension comprises a flexure for mounting the micro-actuator thereon, a suspension tongue connected to the flexure and an independent spacer sandwiched between the suspension tongue and the flexure to... Agent: Nixon & Vanderhye, PC

20070247763 - Novel emr structure with bias control and enhanced linearity of signal: An extraordinary magnetoresistive device EMR having a discontinuous shunt structure. The discontinuous shunt structure improves the linearity of response of the EMR device. The EMR device includes a EMR heterostructure that includes an EMR active layer. The heterostructure can include first, second and third semiconductor layers, with the second layer... Agent: Zilka-kotab, PC

20070247764 - Gmr sensor having a capping layer treated with nitrogen for increased magnetoresistance: A magnetoresistive sensor having a Ta cap layer with nitrogen added in situ during deposition. The nitrogen in the cap layer can be formed by depositing a Ta cap layer in a sputter deposition chamber having a small amount of nitrogen in an Ar atmosphere. The resulting nitrogenated cap layer... Agent: Zilka-kotab, PC

20070242386 - Controlling a write inhibit threshold based on vibration: A disk drive can include a data storage disk, a head, an acceleration sensor, and a controller. The head is configured to write data on the disk. The acceleration sensor generates an acceleration signal that is indicative of acceleration of the disk drive. The controller determines when the disk drive... Agent: Myers Bigel Sibley & Sajovec

20070242387 - Positioning control circuit, measurement apparatus for trace information and related method: A magnetic disk apparatus is configured so as to read trace information from a discrete track recording medium recording the trace information for making a servo locus of a magnetic head trace the center line of physical tracks and control the servo locus of the magnetic head onto the center... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070242388 - Disc clamp having force distributing features: A disc clamp is provided for securing discs to a spindle motor. In particular, the clamp is useful in providing distributed forces to the discs. The clamp includes an annular body having an upper surface, a lower surface, an inner circumference and an outer circumference. A flange extends from the... Agent: Westman, Champlin & Kelly Suite 1400

20070242375 - Method for restoring data stored on an optical disc and optical disc drive suitable therefore: d

20070242378 - Magnetic recording and reproducing apparatus and magnetic recording and reproducing method: A magnetic recording and reproducing apparatus is disclosed which includes: a recording device configured to record with a write head a plurality of tracks constituting a unit of signal processing for data detection, to magnetic recording media; a reproduction device configured to reproduce with a read head a plurality of... Agent: Robert J. Depke Lewis T. Steadman

20070242376 - Magnetic recording and reproduction method, recording apparatus, reproduction apparatus and magnetic recording medium: A magnetic recording and reproduction method includes the steps of recording a plurality of tracks which make a unit for a signal process for data detection by means of a recording head on a magnetic recording medium, and reproducing signals of the plural tracks by a plural number of times... Agent: Robert J. Depke Lewis T. Steadman

20070242377 - Magnetic recording/reproducing apparatus and magnetic recording/reproducing method: A magnetic recording/reproducing apparatus is disclosed wherein reproduced signals read out from a plurality of recording tracks using a reproducing head can be separated into original recording signals of the recording tracks. Upon recording, an identification signal which has a recording wavelength equal to or greater than a minimum recording... Agent: Robert J. Depke Lewis T. Steadman

20070242379 - Defect reallocation for data tracks having large sector size: A method is provided. The method includes determining that a data sector included in a select data track is in error, the data sector in error includes at least one identified data wedge. The at least one defective data wedge in the data sector in error is located. The method... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20070242380 - Magnetic head device and magnetic recording/reproducing apparatus: A magnetic head device performs a recording operation and a reproducing operation in a linear magnetic tape recording system having a plurality of tracks that are formed parallel to each other in a longitudinal direction of a tape. The magnetic head device includes a recording head block including a plurality... Agent: Robert J. Depke Lewis T. Steadman

20070242381 - Magnetic recording medium and magnetic recording/reproducing device: A magnetic recording medium includes: a data area where data is to be recorded; and a servo area where position signal for positioning a recording/reproducing head is recorded, the servo area being provided with an address section in which address information is recorded, wherein the address section has a magnetic... Agent: Nixon & Vanderhye, PC

20070242382 - Asperity data storage system, method and medium: An asperity data storage system wherein asperities are used to represent stored data. The asperity data storage system includes an asperity transducer that thermally interacts with a data storage medium adapted to store an information-encoded pattern of asperities thereon, such as a rotatable disk, a streamable tape, or a fixed... Agent: Walter W. Duft

20070242383 - Method and apparatus for improving signal-to-noise ratio for hard disk drives: A hard disk drive comprising a plurality of read/write heads oriented to serially read data from the magnetic media of the disk drive. The head output signals are delayed and combined to provide a time aligned composite signal for determining the value of the data bits read from the disk... Agent: Hitt Gaines, PC Lsi Corporation

20070242384 - Direct coupled wide-bandwidth front-end with smart bias control amplifier: Embodiments of the present invention provide a mixed-mode amplifier for amplifying signals in data storage devices such as disk drives. In one embodiments, a circuit for amplifying data signals comprises a magnetoresistive sensor having a bias voltage applied thereto; a signal amplifier which amplifies a signal detected by the magnetoresistive... Agent: Townsend And Townsend And Crew LLP

20070242385 - Storage system controlling power supply module and fan: When a disk device corresponding to a logical volume is started, a disk system determines and starts a disk device and a fan to be started, while comprehensively considering heat quantity generated by the disk device to be started, the cooling capacity of the fan, and the electric power consumption... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070242389 - Method for manufacturing a magnetic write head using a protective layer to prevent write pole consumption: A method of manufacturing a write pole that prevents P2 pedestal consumption during ion milling removal of coil and pole seed layers. The write head can be constructed by forming a first pole and then forming a magnetic pedestal (P2) over the first pole. A protective layer of, for example,... Agent: Zilka-kotab, PC

20070242390 - Disk drive apparatus and head assembly used therefor: Embodiments in accordance with the present invention allow a resin member accommodating therein a trace, to have a small thickness. An HDD according to an embodiment of the present invention includes a resin accommodation member fixed to a side surface of arms. Part of a trace is accommodated in a... Agent: Townsend And Townsend And Crew LLP

20070242391 - Magneto-resistive element, thin film magnetic head, magnetic head device, and magnetic recording/reproducing apparatus: A magneto-resistive element includes a lower magnetic shield film and a magneto-resistive film disposed above the lower magnetic shield film. The lower magnetic shield film includes a lower shield layer and an upper shield layer. The upper shield layer is amorphous or microcrystalline, made of a NiFe or CoFe composition... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070242392 - Shield in a magnetic device with reduced erase filed: A shield in a magnetic reader includes a magnetic layer having a first surface and a second surface. The magnetic layer includes at least one aperture that extends through the magnetic layer from the first surface to the second surface.... Agent: Kinney & Lange, P.A.

20070242393 - Recessed sio2 or si3n4 overcoat for gmr head in magnetic disk drive: A giant magnetoresistive (GMR) head contains an overcoat layer consisting of silicon dioxide or silicon nitride. These materials have a coefficient of thermal expansion (CTE) that is less than alumina, which is conventionally used for the overcoat layer. As a result, the overcoat layer exhibits a smaller temperature-induced protrusion when... Agent: Silicon Valley Patent Group LLP

20070242394 - Magnetoresistive (mr) element having a continuous flux guide defined by the free layer: Magnetoresistive (MR) elements having flux guides defined by the free layer are disclosed. The MR element includes a free layer, a spacer/barrier layer, a pinned layer, and a pinning layer. A back edge of the free layer (opposite the sensing surface of the MR element) extends past a back edge... Agent: Duft Bornsen & Fishman, LLP

20070242396 - Magnetoresistive element including heusler alloy layer and method of manufacturing same: In an MR element, each of a pinned layer and a free layer includes a Heusler alloy layer. The Heusler alloy layer has two surfaces that are quadrilateral in shape and face toward opposite directions. The Heusler alloy layer includes one crystal grain that touches four sides of one of... Agent: Oliff & Berridge, PLC

20070242395 - Methods of manipulating the relaxation rate in magnetic materials and devices for using the same: In accordance with the present invention, ferromagnetic thin films of iron that have reduced relaxation rates and methods of making the same are provided. It should be noted that pure iron is a ferromagnet (i.e., has a spontaneous magnetization alignment) with the lowest intrinsic damping rate of all of the... Agent: Wilmerhale/columbia University

20070236817 - Magnetic-tape recording method, magnetic-tape recording apparatus, and computer system: A control-dataset storage controller controls storing a control dataset of a file to be recorded on a track unit that is identified by the track-unit identification data, in association with the track-unit identification data, in a control-dataset storing unit. A track-unit specification controller controls specifying a track unit for recording... Agent: Greer, Burns & Crain

20070236819 - Hard disk drive preamplifier with reduced pin count: A disk drive controller including a preamplifier and a controller is disclosed, in which communications between the controller and the preamplifier are carried out over at least some shared terminals and conductors. A first pair of differential lines is provided to communicate data, sensed at read/write heads of the disk... Agent: Texas Instruments Incorporated

20070236825 - Differential voice coil motor control: A disk drive controller including a differential voice coil motor control function is disclosed. The differential voice coil motor control function includes an on-chip compensation network for the inner control loop, including a resistor formed of one or more MOS transistors connected in series. The gate of the MOS transistors... Agent: Texas Instruments Incorporated

20070236818 - Off-track write error recovery: Method and apparatus for off-track write error recovery. A storage medium is provided with at least first and second tracks, and a write protected status is assigned to the second track to inhibit subsequent writing of data thereto in relation to a position error detected during writing of data to... Agent: Fellers, Snider, Blankenship, Bailey & Tippens

20070236820 - Apparatus, system, and method for writing magnetically encoded data to discrete lands: An apparatus, system, and method are disclosed for writing magnetically encoded data. A servo module positions a write head relative to a first land such that a first edge of the write head is positioned substantially over a first land edge of the first land. The write head has a... Agent: Kunzler & Mckenzie

20070236821 - Detecting head/disk contact in a disk drive using a calibration parameter: A disk drive having a heater element on the read/write head includes control circuitry to prevent head/disk contact by limiting power to the heater element. As the power to the heater element increases, thermal expansion reduces the fly height until head/disk contact occurs. During drive calibration, a maximum power level... Agent: Procopio, Cory, Hargreaves & Savitch LLP

20070236822 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070236823 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070236824 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070236826 - Magazine insertion and ejection system: Described herein is a mobile data storage magazine for interacting with a docking station. The magazine can include a magazine frame containing a plurality of operatively interconnected disk drives, a first contact element associated with the magazine frame capable of conducting electrical power to at least one of the plurality... Agent: Hiscock & Barclay, LLP

20070236827 - Tape roller guide with integral recording head: An integral recording head, for use in a linear tape drive system, includes a circumferentially grooved roller guide assembly and a recording head actuator assembly. The circumferential groove feature is incorporated on the surfaces of the roller guide assembly, and provides a substantial frictional contact force that acts to reduce... Agent: Shimokaji & Associates, P.C.

20070236829 - Control system to regulate the concentration of vapor in a hard disk drive: A method and apparatus for regulating the concentration of a vapor within a hard drive are provided. In one embodiment, the method may include providing a source chemical of a vapor in a first cavity formed within a first object, providing an absorptive chemical which absorbs the vapor in a... Agent: Patterson & Sheridan, L.L.P.

20070236828 - Magneto-fluidic seal with vibration compensation: A magneto-fluidic seal includes a shaft mounted using an upper bearing and a lower bearing, a disk joined with the shaft, and a sleeve joined with the disk and rotating using a sleeve bearing. A pole piece substantially surrounds the sleeve and has a gap between the pole piece and... Agent: Bardmesser Law Group, P.C.

20070236830 - Thin film magnetic head, method of manufacturing the same, and magnetic recording head: The present invention provides a thin film magnetic head capable of suppressing unintentional wiring to a neighboring track and preventing information recorded on a recording medium from being erased. A main magnetic pole layer is constructed so that height of a widened end surface in a lower main magnetic pole... Agent: Kenyon & Kenyon LLP

20070236834 - Perpendicular magnetic recording head having flared part: A perpendicular magnetic recording head includes a nonmagnetic insulating layer and a main magnetic pole layer disposed on the nonmagnetic insulating layer. The main magnetic pole layer includes a pole straight part exposed in an opposing surface opposite a recording medium and a flared part that extends from the pole... Agent: Brinks Hofer Gilson & Lione

20070236832 - Lift-off method for forming write pole of a magnetic write head and write pole formed thereby: A lift-off method for forming write pole of a magnetic write head and write pole formed thereby is disclosed. A write pole including a hard mask on a top portion of the write pole is formed. A layer of material for reinforcing sidewall fencing of the write pole is deposited.... Agent: David W. Lynch Chambliss, Bahner & Stophel

20070236833 - Method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head: A method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head is disclosed. A protective plated layer is formed over the bump to prevent the bump form being damaged during formation of the notch at the pole tip. The flux... Agent: David W. Lynch Chambliss, Bahner & Stophel

20070236831 - Shaped trailing shield of a perpendicular recording write element: Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of... Agent: Duft Bornsen & Fishman, LLP

20070236835 - Magnetic recording medium: A magnetic recording medium includes a nonmagnetic support; and a magnetic layer that comprises a binder and ferromagnetic powder dispersed in the binder, wherein δ is 10 to 100 nm; and σd is from 5 to 50 nm in terms of coating layer in the magnetic recording medium, wherein δ... Agent: Sughrue-265550

20070236836 - Magnetic head slider: Embodiments in accordance with the present invention provide a thin-film head formed on an AlTiC substrate of a magnetic head slider. A thin-film head include a write element, a read element, a heater, an alumina insulating film that separates the elements and heater from one another, electric wiring films leading... Agent: Townsend And Townsend And Crew LLP

20070236837 - Adhesion layer for protective overcoat: An apparatus includes a metal substrate, an amorphous adhesion layer on the metal substrate, and a protective DLC layer over the adhesion layer. The adhesion layer has a thickness of less than about 8 Angstroms, and has a composition of carbon silicon carbide or carbon silicon nitride. The composition of... Agent: Kinney & Lange, P.A.

20070236838 - Proximity recording slider with high air bearing damping in and out of contact: An air bearing surface for a head assembly for a data storage device comprises at least one air bearing pad. At least one channel is recessed within the at least one air bearing pad. The at least one channel is formed with an open top and is located entirely within... Agent: Wagner, Murabito & Hao LLP

20070229998 - Master for magnetic transfer and method of producing vertical recording medium: A master for magnetic transfer is made which comprises a substrate which has on a surface thereof a convex area and a concave area corresponding to servo information and which is constituted of a soft magnetic, and a ferromagnetic which is provided in the concave portion of the substrate, which... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070230002 - Fly height calibration for read/write heads: A fly height controller that controls fly height of a read/write head relative to a rotating data storage disk is calibrated. A heater signal is applied to a heater element to heat the head. The level of a write current that is conducted through the head is increased until the... Agent: Myers Bigel Sibley & Sajovec

20070230005 - High-speed interface between a read channel and a disk controller: A system and method for providing an interface between a read channel and a disk controller. The interface includes a plurality of differential pair signal lines operable to communicate data and control signals between the read channel and the hard disk controller. The data and control signal lines communicate operations... Agent: Garlick Harrison & Markison

20070230004 - Read channel/hard disk controller interface including power-on reset circuit: A system and method for providing an interface an interface between a read channel and a disk controller. The interface includes a plurality of differential pair signal lines operable to communicate data and control signals between the read channel and the hard disk controller in a manner that eliminates the... Agent: Garlick Harrison & Markison

20070230006 - Magnetic recording device: A magnetic recording device which can write magnetic information with high density. The device uses, for a magnetic recording layer of a magnetic recording medium, a magnetic material whose anisotropy energy varies with an applied electric field. The head has an electrode for applying an electric field to a recording... Agent: Reed Smith LLP Suite 1400

20070230007 - Magnetic recording device: A magnetic recording device which can write magnetic information with high density. The device uses, for a magnetic recording layer of a magnetic recording medium, a magnetic material whose anisotropy energy varies with an applied electric field. The head has an electrode for applying an electric field to a recording... Agent: Stanley P. Fisher Reed Smith LLP

20070230008 - Reproducing circuit and a magnetic disk apparatus using same: A reproducing circuit for magnetic disks wherein a MR head bias voltage does not exceed the specified value during any malfunction of the power supply voltage including the cases of power supply ON/OFF, and the central voltage of the MR head is controlled to the ground. The reproducing circuit for... Agent: Miles & Stockbridge PC

20070230009 - Systems and methods for accessing preamp registers using commands via read channel/hard disk controller interface: A system and method for providing an interface an interface between a read channel and a disk controller. The interface includes a plurality of differential pair signal lines operable to communicate data and control signals between the read channel and the hard disk controller. The data and control signal lines... Agent: Garlick Harrison & Markison

20070230011 - Apparatus and method of monitoring hard disk drive: An apparatus and method of monitoring a hard disk drive (HDD) include a HDD motor state detector for detecting the state of the motor of the HDD. Because the control information on the HDD is not acquired while the motor of the HDD is stopped, the HDD is not accessed... Agent: Ratnerprestia

20070230019 - Apparatus and method to control flying height of magnetic head in retry mode and disk drive using the same: An apparatus and method to retry data read and write while changing a flying height of a magnetic head in a disk drive. The apparatus includes the magnetic head including a magnetic read element to sense a magnetic field on a disk and a magnetic write element to magnetize the... Agent: Stanzione & Kim, LLP

20070230020 - Controlling head flying height based on head heater resistance: A fly height controller measures electrical resistance of a heater element attached to a read/write head as an indication of head temperature and associated flying height relative to a data storage disk, and responds to the measured resistance of the heater element by varying a fly height adjustment signal applied... Agent: Myers Bigel Sibley & Sajovec

20070230021 - Flying height control for read-to-write and write-to-read transitions: Various embodiments of the present invention are directed to substantially eliminating transient changes in a flying height of a head during read-to-write and write-to-read transitions. In various embodiments, flying height transient compensation is provided to substantially maintain a desired flying height during one or both of read-to-write and write-to-read transitions.... Agent: Foley & Lardner

20070230016 - Magnetic recording device, magnetic recording medium, and servo information recording method: A magnetic recording device includes a composite magnetic head, which includes a recording head and a reproduction head, and a magnetic recording medium. The magnetic recording medium includes a data region for recording data using the recording head, a mask pattern region in which an area in which servo information... Agent: Amin, Turocy & Calvin, LLP

20070230014 - Storage device, control device, control method, and program: A heater for changing a projection distance protrusion value by thermal expansion accompanying electric-power-distributed heating is embedded in a head having a reading element and a recording element. A clearance control information measurement unit measures and saves, at desired correction timing, clearance control information including a clearance required for controlling... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070230015 - Storage device, control method, control device, and program: A heater for changing a projection distance protrusion value by thermal expansion accompanying electric-power-distributed heating is provided in a head having at least a reading element. At desired correction timing, a changed distance detection unit measures a clearance changed distance in a state in which the head is positioned to... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070230024 - Hard disk drive repeatable runout feed forward cancellation with high speed and low power phase rotator: Embodiments of the present invention significantly reduce the number and complexity of processing operations to be performed. This is done by receiving the learned run out or vector A to be rotated by phase q. This phase q may be limited to a π/4 resolution. Sine function values and cosine... Agent: Garlick Harrison & Markison

20070230025 - Magnetic recording apparatus: Embodiments of the present invention provide a magnetic recording apparatus capable of generating RRO compensation information that can expand the disturbance frequency range in which to compensate for RRO. Embodiments of the present invention describe a magnetic recording apparatus that uses a plurality of repetitive control systems to detect repeatable... Agent: Townsend And Townsend And Crew LLP

20070230026 - Offset measurement method for magnetic recording head and magnetic recording/reproducing device: A storage device has a separate type magnetic head and a discrete type magnetic recording medium on which recording tracks and recording disabled areas are alternately formed. An accurate offset of the magnetic head with respect to the magnetic recording medium is measured even if the widths of the elements... Agent: Greer, Burns & Crain

20070230035 - Settling judgment method for positioning control device and positioning control device: In a settling judgment method for judging whether an object is settled in a target position, the settlement is judged accurately at high-speed. In a positioning device for controlling a position of an object using a position error between a target position and a current position, a plurality of judgment... Agent: Greer, Burns & Crain

20070230037 - Magnetic disk drive: Embodiments in accordance with the present invention provide a magnetic disk drive that reliably prevents entry of water or other form of liquid through a breathing hole for the enhanced performance, reliability, and the like. In one embodiment, a box body forming part of a hard disk drive (HDD) has... Agent: Townsend And Townsend And Crew LLP

20070230039 - Clamp ring and disc drive having the same: A clamp ring that clamps a disc onto a spindle motor that rotates the disc includes an annular disc shaped body fixed onto a hub that rotates with a shaft of the spindle motor, the body arranging plural screw holes in a circumferential direction of the body, a screw that... Agent: Kratz, Quintos & Hanson, LLP

20070229997 - Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure: A write-once-type recording medium (100) on which record data can be recorded only once, provided with: a data area (108) to record therein the record data; and a shared area (104, 105) to temporarily record therein evacuation data which is record data to be recorded or already recorded at a... Agent: Young & Thompson

20070229999 - Hard disk inspection method and system: A method an apparatus for testing the surface of hard disk platters having vertically oriented magnetic domains is disclosed. According to the method of the present invention, all of the magnetic domains on the surface of the disk to be tested are oriented in the same direction, so that the... Agent: Sheppard, Mullin, Richter & Hampton LLP

20070230001 - Head inspection apparatus and method thereof: In an inspection for judging acceptance of a recording and reproduction head used in a recording and reproduction device, quality information indicating quality of a data signal of a head unit and flying height information indicating flying height of the head unit are acquired, and acceptance of the head unit... Agent: Kratz, Quintos & Hanson, LLP

20070230003 - Information storage systems: In another aspect an information storage and retrieval apparatus comprises an information storage medium 168 comprising an information storage area, and an array 170 of information read and/or write heads. The information storage medium 168 and array of heads 170 are arranged to be oscillated with respect to each other... Agent: Sughrue Mion, PLLC

20070230000 - Method and apparatus for quantifying stress and damage in magnetic heads: The present invention provides a method and apparatus for quantifying stress and damage in magnetic heads. A change in a performance parameter of a magnetic recording head is characterized. The head is stressed by loading it onto and flying it over a rough zone of the recording medium. A post-stress... Agent: David W. Lynch Chambliss, Bahner & Stophel

20070230010 - Multi-ridged subwavelength aperture for optical transmission and thermally assisted magnetic recording: A subwavelength aperture includes a plurality of ridges that project from an aperture sidewall into the aperture opening. The ridges may be closely spaced such that the hot spots associated with the ridges are likewise closely spaced and create an elongated hot spot. The subwavelength aperture of the present invention... Agent: Intellectual Property Law Offices

20070230018 - Actuation efficiency based contact detection: Detection of contact between a sensor, such as a data head or a slider, and a surface, such as the magnetic surface of a disk is achieved using the efficiency of actuator associated with the sensor. In this manner, the fly height of the sensor can be calibrated substantially continuously.... Agent: Foley & Lardner

20070230012 - Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording: An apparatus comprises a storage medium, a recording head, a source of electromagnetic radiation, and a control circuit for modulating the source of electromagnetic radiation in response to a static deviation of a spacing between the recording head and the storage medium. A method of compensating a static deviation of... Agent: Pietragallo, Bosick & Gordon LLP

20070230017 - Fly height compensation using temperature: A controller is provided having a circuit that uses non-repeatable run-out data and temperature data to provide a compensation for a fly height of a head. A disk drive may also be provided having a head for reading data from a disk, a thermistor, and a controller for controlling a... Agent: Foley & Lardner

20070230013 - Head flying height measuring apparatus in magnetic storage device: Firstly, in order to check the noise level of a device, DC erasure is applied to a magnetic recording medium and the magnetic recording medium is read. Then, a test signal including a first order component and a third order harmonic frequency is written into the magnetic recording medium. The... Agent: Kratz, Quintos & Hanson, LLP

20070230022 - Disk device, positioning control circuit and information processing apparatus using same: A disk device has a positioning control system which has a disturbance suppression function in which the disturbance is suppressed quickly to prevent vibration of the head. In a positioning system having a disturbance suppression function of a disk device, an interface circuit for setting a known disturbance frequency to... Agent: Greer, Burns & Crain

20070230023 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230028 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230029 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230030 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230031 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230032 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium includes a servo area where servo data used for detecting a position of a magnetic head on a magnetic recording medium is recorded; and a writable data area, arranged side by side with the servo area in a track direction, on which user data is written... Agent: Amin, Turocy & Calvin, LLP

20070230027 - Position detecting circuit, information recording apparatus, and magnetic disk device: The delay time from the rotation start of a magnetic disk medium (M) to a servo pattern being read is obtained with respect to a radial position from the phase delay that the trajectory of a magnetic head (H) by a rotary actuator causes with respect to the radial direction... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070230033 - Identifying error built into a medium: An apparatus includes plural spaced apart sensors arranged along a direction of motion of a medium, and a processing circuit to receive signals from the sensors, determine a difference of the signals, and identify an error built into the medium based on the difference.... Agent: Hewlett Packard Company

20070230034 - Magnetic spacing control method for magnetic head, read/write circuit, and magnetic disk device using same: In a magnetic disk device, a magnetic head is made to protrude by means of a write current applied to a write element, and the protrusion amount is controlled using a heat generating element provided on the magnetic head. During read operations, power equal to the sum of a first... Agent: Greer, Burns & Crain

20070230036 - Deep storage slot with a constant spring force: Disclosed is a deep storage slot with a constant spring force comprising a storage slot housing defining a cartridge cavity and a cartridge opening, wherein the cartridge cavity is configured to store a plurality of cartridges in depth. Also disclosed is a constant force spring comprising a rolled, pre-stressed strip... Agent: Cantor Colburn LLP - IBM Tuscon Division

20070230038 - Vibration-suppressing mechanism for rotary disk information recording device and magnetic disk drive: Embodiments in accordance with the present invention relate to greatly decreasing vibrations of a rotary disk at a portion where vibration on the disks is to be suppressed in a vibration-suppressing mechanism for rotary disks while enabling the rotary disks to be incorporated in the shroud surface. In one embodiment,... Agent: Townsend And Townsend And Crew LLP

20070230040 - Timing-based servo verify head and method thereof: A servo head capable of verifying at least one timing based pattern printed on media is provided. The servo head includes a magnetic structure having at least one magnetic element arranged and configured to form at least one magnetic gap parallel to the timing based pattern. In one embodiment, the... Agent: Dorsey & Whitney LLP Intellectual Property Department

20070230042 - Thin film device: A thin film device is provided, in which inductance can be increased when a thin film coil wound on a magnetic film is provided. In a thin film coil wound on a magnetic film, thickness of lower coil portions is smaller than thickness of upper coil portions. Consequently, a magnetic... Agent: Oliff & Berridge, PLC

20070230043 - Thin film magnetic device and method of manufacturing the same: The present invention provides a thin film magnetic device realizing effective improvement in magnetic permeability in a high frequency area. The thin film magnetic device includes a thin film coil and a plurality of strip-shaped magnetic films disposed along a plane in which the thin film coil extends. The plurality... Agent: Oliff & Berridge, PLC

20070230041 - Thin-film magnetic head capable of securing insulating property and minimizing projection of a recording element section due to heat expansion: A thin-film magnetic head is capable of securing an insulating property and minimizing the projection of a recording element section due to heat expansion. The thin-film magnetic head includes a pair of magnetic layers disposed with a predetermined gap therebetween on a surface facing a recording medium. The layers are... Agent: Brinks Hofer Gilson & Lione

20070230044 - Magnetic writer pole with a graded magnetic moment: A magnetic writer includes a write pole configured to reduce a skew effect during writing to a magnetic medium. A trailing portion of the write pole has a magnetic moment greater than a leading portion of the write pole.... Agent: Kinney & Lange, P.A.

20070230048 - Magnetic disk device: A magnetic disk device performs magnetic recording by generating a magnetic field using an electric current on a light-irradiated surface of a recording medium. A head unit is formed by laminating an optical film that transmits a light and a metal film through which the electric current flows. A light... Agent: Staas & Halsey LLP

20070230049 - Thin film device: A thin film device is provided which is capable of improving a Q value when employing a thin film coil wound on a magnetic film. In the thin film coil wound on an upper magnetic film, the thickness (TA) of lower coil portions in between a lower magnetic film and... Agent: Oliff & Berridge, PLC

20070230047 - Thermally assisted recording of magnetic media using an optical resonant cavity: The media heating device of the magnetic head includes an optical resonant cavity produces a high intensity near-field optical beam of subwavelength dimension adjacent to the write pole. A suitable resonant cavity may be a spherical cavity, disk shaped cavity, ring shaped cavity, racetrack shaped cavity, micropillar cavity, photonic crystal... Agent: Intellectual Property Law Offices

20070230045 - Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head: A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems... Agent: Zilka-kotab, PC

20070230046 - Write head design and method for reducing adjacent track interference in at very narrow track widths: A perpendicular write head having a wrap around trailing shield for reducing stray field writing and adjacent track interference. The trailing shield is notched, having an un-notched portion directly behind (trailing) the write pole and first and second notched portions that extend laterally to either side. The un-notched portion of... Agent: Zilka-kotab, PC

20070230050 - Low protrusion compensation air bearing: Magnetic head sliders having air-bearing surfaces designed to reduce the protrusion compensation effect. The magnetic head slider includes: at least one front pad located an upstream portion of the slider and operative to generate a lifting force; and a rear pad that is located downstream of the front pad and... Agent: Buchanan, Ingersoll & Rooney PC

20070230053 - Magnetic recording medium: A magnetic recording medium is provided. The magnetic recording medium includes: a substrate; a perpendicular magnetic recording layer which is formed over the substrate; a first soft magnetic underlayer which is disposed between the perpendicular magnetic recording layer and the substrate; a second soft magnetic underlayer which is disposed between... Agent: Sughrue Mion, PLLC

20070230051 - Perpendicular magnetic recording medium and magnetic storage device: A perpendicular magnetic recording medium is disclosed that is able to prevent the Wide Area Track Erasure phenomenon from occurring and is capable of high density recording. The perpendicular magnetic recording medium includes a substrate; a soft-magnetic backup stack structure including a first magnetic layer, a first non-magnetic coupling layer,... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230052 - Perpendicular magnetic recording medium and magnetic storage device: A perpendicular magnetic recording medium is disclosed that is able to prevent the Wide Area Track Erasure phenomenon from occurring and is capable of high density recording. The perpendicular magnetic recording medium includes a substrate; a soft-magnetic backup layer on the substrate; a separation layer on the soft-magnetic backup layer... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230054 - Magnetic tape: A magnetic tape including: a nonmagnetic support; a substantially nonmagnetic layer containing nonmagnetic powder and a binder; and a magnetic layer containing ferromagnetic powder and a binder, in this order, wherein the magnetic tape has a coefficient of temperature expansion of from 0 to 10×10−6/° C. and a coefficient of... Agent: Sughrue-265550

20070230055 - Magnetic recording media, magnetic recording apparatus, and method for manufacturing magnetic recording media: A magnetic recording media includes a toroidal substrate, a surface thereof is divided into a recording area located in a central part between an outer peripheral edge and an inner peripheral edge, edge areas located within 100 μm or more and 2,000 μm or less from the outer and inner... Agent: Nixon & Vanderhye, PC

20070230056 - Slider incorporating heaters and elgs and method of fabrication: A slider for a magnetic disk drive is disclosed which includes a heater circuit structure, and at least one ELG circuit structure where a portion of the ELG circuit structure is removable by lapping. The ELG circuit structure is connected electrically in parallel with the heater circuit structure to a... Agent: Intellectual Property Law Offices

20070230057 - Magnetic head supporting mechanism: A magnetic disc apparatus having a magnetic disc on which information is recorded, a magnetic head and a magnetic head supporting mechanism. The magnetic head supporting mechanism includes a slider having the magnetic head mounted thereon, a load beam having an arm mounting portion and a pivot, and a gimbal... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070230058 - Assembly having slider and suspension, and disk drive unit: Embodiments in accordance with the present invention provide a limiter mechanism that permits the gimbal to be designed more freely than before. The head gimbal assembly (HGA) according to one embodiment of the present invention has a limiter mechanism within the silhouette of the head slider. The limiter mechanism has... Agent: Townsend And Townsend And Crew LLP

20070230059 - Disk drive and head assembly used in the same: Embodiments in accordance with the present invention disclose hole sequences that are formed in the metal layer of a trace to adjust rigidity and crosstalk noise resulting from the hole sequences is thereby suppressed. A suspension according to one aspect of the invention includes a trace adapted to transmit a... Agent: Townsend And Townsend And Crew LLP

20070230060 - Thin film piezoelectric micro-actuator for head gimbal assembly: A thin film piezoelectric (PZT) micro-actuator is disclosed. Two thin film pieces of PZT are couple to a slider support frame. The slider support frame has a slider support connected by a leading beam to a base. The two thin film pieces of PZT connect the slider support to the... Agent: Kenyon & Kenyon

20070230061 - Method for fabricating magnetic head: The method for fabricating the magnetic head comprises the step of forming over a lower electrode a magnetoresistive effect film 16 with a polishing resistant film 20 formed over the upper surface, the step of forming a magnetic domain control film 24 over the entire surface of the lower electrode... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230062 - Thin-film magnetic head and magnetic medium drive apparatus with the thin-film magnetic head: A thin-film magnetic head has a plurality of MR read head elements. Each MR read head element includes shield layers electrically insulated from the ground. An electrical resistor layer is electrically connected between the shield layer of one of the plurality of MR read head elements and the shield layer... Agent: Buchanan, Ingersoll & Rooney PC

20070230064 - Polishing method of soft magnetic layer in thin-film magnetic head, manufacturing method of thin-film magnetic head and thin-film magnetic head: A polishing method includes the steps of, performing a chemical-mechanical polishing with a first acid slurry, in the case of polishing soft magnetic layer with iron alloy that contains silicon and aluminum, and performing a mechanical polishing with a second weak acid or neutral slurry with a pH different from... Agent: Buchanan, Ingersoll & Rooney PC

20070230063 - Method for merging sensor field-mill and electronic lapping guide material placement for a partial mill process and sensor formed according to the method: A method for merging sensor field-mill and electronic lapping guide material placement for a partial mill process and sensor formed according to the method is disclosed. An electronic lapping guide is formed coplanar with a sensor. The coplanar electronic lapping guide and sensor are processed to provide the electronic lapping... Agent: David W. Lynch Chambliss, Bahner & Stophel

20070230065 - Magnetoresistance effect element, magnetic head and magnetic reproducing system: A magnetoresistance effect element a stacked film including a magnetization fixed layer in which the direction of magnetization is substantially fixed to one direction, and a magnetization free layer in which the direction of magnetization varies in response to an external magnetic field, an electrode connected to a part of... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070230067 - Magnetoresistance effect device, magnetic head, magnetic recording system, and magnetic random access memory: A CPP type magnetoresistance effect device having a synthetic ferri-pinned spin valve structure including a buffer layer, pinned ferromagnetic layer, nonmagnetic metal intermediate layer, and free ferromagnetic layer and having a free ferromagnetic layer made a specific composition of CoFeAl or CoMnAl, the buffer layer comprising an amorphous metal bottom... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230066 - Current perpendicular to plane (cpp) magnetoresistive sensor having a flux guide structure and synthetic free layer: A current perpendicular to plane (CPP) magnetoresistive sensor having a front edge that is recessed from the air bearing surface (ABS). The sensor includes a pinned layer structure a free layer structure and a spacer layer sandwiched between the free layer and the pinned layer. The free layer is an... Agent: Zilka-kotab, PC

20070230069 - Magnetoresistive element, magnetic head, and magnetic reproducing apparatus: A magnetoresistive element has a magnetization pinned layer including a magnetic film a magnetization direction of which is substantially pinned in one direction, a magnetization free layer including a magnetic film a magnetization direction of which is varied depending on an external magnetic field, a composite spacer layer interposed between... Agent: Nixon & Vanderhye, PC

20070230070 - Magnetoresistive element including heusler alloy layer: A pinned layer of an MR element includes an underlying magnetic layer made of a magnetic alloy layer having a body-centered cubic structure, and a Heusler alloy layer formed on the underlying magnetic layer. A free layer of the MR element includes an underlying magnetic layer made of a magnetic... Agent: Oliff & Berridge, PLC

20070230068 - Dual-type tunneling magnetoresistance (tmr) elements: Dual-type tunneling magnetoresistance (TMR) elements and associated methods of fabrication are disclosed that allow for higher bias voltages. In one embodiment, the dual-type TMR element includes a lower pinned layer structure, a lower tunnel barrier layer, a ferromagnetic free layer structure, an upper tunnel barrier layer, and an upper pinned... Agent: Duft Bornsen & Fishman, LLP