Dynamic magnetic information storage or retrieval inventions 02/06

20060039075 - Method for editing of a digital film using an electronic data processing apparatus: A method for editing a digital film using an electronic data processing apparatus, comprising the steps of: setting a first editing mark; setting a second editing mark; and deleting a film section between the first editing mark and the second editing mark. At least one of the steps of setting...

20060039076 - Servo sector in magnetic disk drive: Embodiments of the invention lower the servo sector's share of each track and ensure that servo sector numbers are reliably determined. According to the embodiment, in the servo sector number (SSA) section of each servo sector, servo sector number information whose bit length (k bits) is shorter than the bit...

20060039077 - Magnetic head heating element in a disk drive: A magnetic head slider including: a head element which records or reproduces information on a magnetic disk, a slider having said head element, and an electric conducting film in which paired first and second parts are formed to be substantially parallel, where current flows within said first and second parts...

20060039078 - Reproducing apparatus and reproducing method for reproducing data by scanning slant tracks using a plurality of reproducing heads: First, data is read from tracks formed on a tape-shaped recording medium by heads disposed on a rotary drum, to measure error rates. Next, of the tracks formed on the tape-shaped recording medium, a worst track suffering the highest error rate is detected based on the error rates thus measured....

20060039079 - Magnetic disk apparatus with dual stage actuator: In one embodiment, a magnetic disk apparatus comprises a magnetic disk for recording information; a magnetic head that reads information from, or writes information to, the magnetic disk; an actuator device that drives the magnetic head; and a control system that controls the driving of the actuator device. The actuator...

20060039080 - Method for preparing a glass spacer ring for a magnetic disk and spacer ring: A glass spacer ring is prepared into a round slice from a glass tube having an outer diameter and a wall thickness corresponding to an outer diameter and a width of the spacer ring, respectively, by engraving a cutting line 7 on an inner side of a glass tube with...

20060039081 - Method and apparatus for an enhanced coplanar conductance structure for inductive heads: A method and apparatus for forming a high conductance, high aspect ratio structure in a single low temperature copper chemical vapor deposition step. The present invention includes topographical features to increase a conformal coverage area....

20060039082 - Tape recording head with multiple planes of transducer arrays: A tape recording head is provided comprising a multiple plane transducer row having a plurality of planes of transducer arrays fabricated on a substrate and which may be staggered or offset relative to one another in a direction perpendicular to the direction of linear motion of the recording tape over...

20060039083 - Recording disk cartridge: A recording disk cartridge includes a plurality of flexible recording disk media integrally rotatably housed within a cartridge case. Each of the recording disk media is fixed to a center core which is stacked one on another through a spacer. The cartridge case includes: a lower plate for configuring a...

20060039084 - Disc drive suspension: In a disc drive suspension having a load beam and a flexure lapped on the load beam, the load beam and the flexure are fixed to each other by a laser weld. The load beam has an insular region including the laser weld of the load beam and a partially...

20060039085 - Magnetic-head apparatus with microactuator having function of short-circuiting both electrodes of epiezoelectric elements and method of manufacturing the same: The supersonic cleaning of a magnetic head apparatus is executed while the control conductive pattern and the conductive leaf spring are electrically connected by means of soldering, and the conductive leaf spring is grounded. This makes it possible to prevent the accumulation of electrostatic charges in the piezoelectric elements on...

20060039086 - Actuator latch apparatus for hard disk drive: An actuator latch apparatus for a hard disk drive (HDD). The actuator latch apparatus includes a first latch formed on one end portion of a swing arm, a notch formed on the one end portion of the swing arm and spaced a predetermined interval from the first latch in a...

20060039087 - Head stack assembly and manufacturing method thereof, and disk drive unit using the same: Connecting head gimbal assembly with controlling circuit thereof, including the steps of facing connecting terminals of at least one head gimbal assemblies and connecting terminal of their controlling circuit to contact with each other and fastening the at least one hard gimbal assembly with their controlling circuit to maintain a...

20060039088 - Magnetic head with optimum aspect ratio of upper shield layer: A magnetic head contains a write magnetic head and a read magnetic head. The write magnetic head includes a lower core layer, an upper core layer arranged over the lower core layer, and a coil layer for applying a magnetic field to the lower and upper core layers. The read...

20060039089 - Magnetic oscillator, magnetic head, and magnetic recording and reproducing apparatus: The present invention is to be capable of suppressing magnetic white noises as far as possible. A resonant magneto-resistance effect element includes a first magnetic layer whose magnetization direction is substantially parallel to a film plane, a second magnetic film whose magnetization direction is substantially perpendicular to the film plane,...

20060039090 - System and method for fixing a direction of magnetization of pinned layers in a magnetic field sensor: A spin valve GMR sensor configured in a bridge configuration is provided. The bridge includes two spin valve element pairs. The spin valve elements include a free layer, a space layer, a pinned layer, and a bias layer. The bias layer includes a first bias layer and a second bias...

20060039091 - System and method for fixing a direction of magnetization of pinned layers in a magnetic field sensor: A spin valve GMR sensor configured in a bridge configuration is provided. The bridge includes two spin valve element pairs. The spin valve elements include a free layer, a space layer, a pinned layer, and a bias layer. The bias layer includes a first bias layer and a second bias...

20060039092 - Cpp gmr/tmr structure providing higher dr: A current perpendicular to plane (CPP) sensor having FeN in their free and pinned layers. A tunnel junction sensor (TMR) according to the present invention can have a MgO barrier layer, and a CPP GMR sensor according to the present invention can have a Cr spacer layer....

20060034007 - Disk recording apparatus: A disk recording apparatus includes a disk to store data, a motor to rotate the disk, an encoder to generate a pulse according to the rotation of the disk, a reference signal output part to output a reference clock signal created using the pulse of the encoder, and a servo...

20060034008 - Failure prediction method for magnetic disk devices, and a magnetic disk device using the same: A warning against the possible failure is accurately sent from the magnetic disk device to a host device. In one embodiment, error indices per unit time are stored discontinuously/continuously for each magnetic head, and if the new index (partial integral error rate) updated with the stored multiple error indices as...

20060034009 - Method for estimating the resistance of a dc motor for positioning read/write heads of a hard disk: A method for estimating resistance of a DC motor for positioning read/write heads of a data storage disk is provided. The DC motor is controlled in an open-loop voltage mode through a motor controller input with a first signal for compensating positioning of the read/write heads onto the data storage...

20060034010 - Solution for leaking problem of punching base and cover with seal tape: Embodiments of the invention provide a data storage device improved in sealability between a base and a cover when sealed together, as well as a method of manufacturing the data storage device, are to be provided. In one embodiment, a disk enclosure of a hard disk drive includes a base...

20060034011 - Damped spindle motor flange for the disk pack in a hard disk drive: The present invention includes a spindle motor with a dampened spindle motor flange, which includes a shallow groove on the disk face. The shallow groove includes a first rim, a trough, and a second rim. In use, the trough fills with a visco-elastic material compressed by a metallic ring. A...

20060034012 - Self-aligned coil process in magnetic recording heads: In one embodiment of the present invention, a write head includes a first pole P1, a P1 pedestal, a first back gap layer plated on top of the first pole P1 leaving a region between the P1 pedestal and the first back gap layer for plating a coil, a first...

20060034013 - High reliability heater for flying height control: Embodiments of the invention improve the power consumption and response speed of a heater for the gap flying height (hg) adjustment, to minimize an influence that the heater has on a life of a read element, and to provide a heater having resistance lines reduced in breaking and ensuring higher...

20060034014 - Magnetic head with heater of thermal flying height control: In one embodiment, a magnetic write/read device comprising a magnetic read element and a magnetic write element is formed in a thin film magnetic head portion of a magnetic head slider. A heat generating resistor is formed between a substrate portion and the magnetic reproducing device for heating thereby thermally...

20060034015 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device: A glass substrate for a magnetic disk contains a transition metal. The substrate, which is subjected to formation of zone texturing by irradiating the substrate with a laser beam, has a high mechanical strength even if it is not chemically strengthened. The glass substrate contains a transition metal element and...

20060034016 - Magnetic head slider and method of fabricating magnetic head slider: A magnetic head slider includes a floating surface, that is opposed to a disk during the use of the magnetic head slider and that has a front part and a rear part with respect to the direction of rotation of the disk, and an electromagnetic transducer element. A front rail...

20060034017 - Suspension, magnetic head assembly, and magnetic disk drive: Embodiments of the invention limit a pitch attitude angle of a magnetic head slider during loading without allowing gimbal stiffness of a flexure in an ordinary flying state to be increased. In one embodiment, a limiter formed by part of a flexure is disposed so as to provide a clearance...

20060034018 - Magnetic disk drive, wiring connection structure and terminal structure: Terminals of a flexible printed circuit board and terminals of a wiring trace in a head suspension assembly are to be connected with each other by soldering without causing a soldering defect. In an embodiment, a terminal structure of a multi-connector in a wiring trace which includes an insulating layer...

20060034019 - Data storage device for recording to magnetic thread: A data storage device for recording to and reading from magnetic thread includes a head assembly having an opening through which the magnetic thread passes. Transducing elements are positioned around the inner surface of the opening and interact with longitudinally-extending parallel tracks formatted around the surface of the magnetic thread....

20060034020 - Hga protecting method and member and method of implementing the hga protecting method and member in a hard disk drive: An HGA protecting method and member and method of implementing the protecting method and member in a hard disk drive. The HGA includes an actuator, at least one pair of suspensions coupled to the actuator, a flexure having a stationary end fixed to each of the suspensions and a free...

20060034021 - Methods of manufacturing magnetic heads with reference and monitoring devices: According to one aspect, an exemplary method for manufacturing a magnetic head includes forming a plurality of magnetoresistive devices, a reference device, and a monitoring device, where the reference device includes a desired stripe height less than the magnetoresistive devices and monitoring device. Material is removed from the air/tape bearing...

20060034022 - Method and apparatus for manufacturing magnetoresistive element: The present invention relates to a method for manufacturing a magnetoresistive element having a magnetization pinned layer, a magnetization free layer, and a spacer layer including an insulating layer provided between the magnetization pinned layer and the magnetization free layer and current paths penetrating into the insulating layer. A process...

20060028747 - Stray field detector, magnetic disk drive, and method of head escaping: Embodiments of the invention prevent demagnetization or degaussing of recorded magnetizations, even if a stray field is applied. In one embodiment, an output of a read head including a magneto-resistive effect element is inputted to a stray field detector through a DC amplifier and a DC filter. The stray field...

20060028748 - Storage system using superparamagnetic particles: An information carrier (10) has an information plane that has a pattern of superparamagnetic material constituting an array of storage locations (11). The presence of a specific superparamagnetic material (12R, 12G, 12B, 12Y) at the information plane represents a value of a storage location. The superparamagnetic materials have a specific...

20060028749 - Reproducing apparatus and method, and recording and reproducing apparatus: A signal of a run-length-limited code is read out from a recording medium. The read-out signal is converted into a reproduced digital signal. A decoder subjects the reproduced digital signal to first decoding different from run length decoding to get a first decoded signal. Information bit streams are generated from...

20060028750 - Magnetic recording media and magnetic recording and reproducing apparatus: The present invention relates to a magnetic recording media including servo zones having magnetic or nonmagnetic patterns which are utilized as servo signals including burst marks of a burst section adapted to detect off-track deviation, and data zones, in which the burst marks of the burst section in each of...

20060028751 - Drive mechanism: A drive mechanism @is comprised with a set comprising a plurality of magnetic bodies, means for supplying a frequency signal to said set, and means for producing movement caused by the attraction/repulsion between the magnetic bodies. The movement is the driving source of the drive mechanism....

20060028752 - Magnetic head with high reliability of the data protection, magnetic disk apparatus including the magnetic head and the method of recording information on the magnetic disk apparatus without miserasing the previously recorded data: There are provided a magnetic head and a magnetic disk apparatus wherein an upper magnetic pole is so shaped that, at a position where skew angle is maximum, the maximum of its projected length in the radial direction of a magnetic disk is not more than the track pitch of...

20060028753 - Hard disk with a new feature: This invention protects the data on the hard disk from viruses and hackers by making it possible to turn off any head whether it is a read head or a write head of any arm of the hard disk by providing switches, so when we surf the Internet we turn...

20060028754 - Increasing head-disk interface reliability using controlled heating: A method for increasing reliability during a read and/or write operation in a disk drive having a head. Data is read from a disk using a head. An amplitude of a signal obtained during reading the data is measured. A degree of variation in the signal amplitude is determined as...

20060028755 - Method and apparatus for providing positional information on a disk: The present invention is a method and apparatus for positioning a read/write head in a hard disk drive. The method comprises providing a disk having a at least one side with a plurality of tracks, where each of the tracks has a servo field with servo bits. The servo bits...

20060028756 - Magnetic recording and reproducing device: A magnetic recording and reproducing device for enhancing the operation efficiency by reducing the number of parts and providing an improved structure is provided. The magnetic recording and reproducing device includes a pole base assembly for loading a magnetic tape by guiding the magnetic tape so that the magnetic tape...

20060028757 - Magnetic tape cartridge library apparatus having vertically oriented stages: The invention provides a magnetic tape cartridge library apparatus wherein the space can be utilized effectively to allow accommodation of an increased number of tape cartridges. The magnetic tape cartridge library apparatus includes a cartridge magazine for removably accommodating a plurality of magnetic tape cartridges in a plurality of stages...

20060028759 - Apparatus and method to improve read/write speed of disk drive system: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally...

20060028758 - Magnetic recording and reproducing apparatus: A magnetic recording and reproducing apparatus has a magnetic recording media having discrete tracks formed of concentric magnetic patterns and a head slider having a read/write head. When the head slider is located on an outermost recording zone of the magnetic recording media, a visual angle for the head slider...

20060028760 - Pressure equalizing fluid flow stripper apparatus and method: A fluid flow stripper for attenuating excitation energy in a data writing device comprising a first zone defining opposing spatially disposed planar surfaces substantially parallel to the disc and comprising a second zone comprising a protuberant surface defining a radially disposed channel. A method for equalizing a static pressure of...

20060028761 - Windage management apparatus and method: A windage management arrangement for attenuating fluid flow disturbances on an actuator and a moving disc, comprising in combination a fluid flow stripper upstream of the actuator and a disc edge damper downstream of the actuator. A method for managing fluid flow created by a rotating disc that is operably...

20060028762 - Perpendicular write pole formation using durimide/alumina hard mask without cmp liftoff: A perpendicular write head includes a main pole comprising a Durimide/Alumina hard mask formed over a laminate layer process to form the main pole without using a liftoff or chemical mechanical polishing process, thereby avoiding rounding corners of the pole, the main pole being controlled in shape for improved control...

20060028764 - Magnetic head having multilayer heater for thermally assisted write head and method of fabrication thereof: A magnetic head including a media heating device that is preferably fabricated within the magnetic head structure. The heating device preferably includes an electrical heating element and electrical leads, where an insulation layer disposed above the heating element is 2 to 4 times thicker than the heating element. The electrical...

20060028763 - Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus: The present invention provides a thin film magnetic head capable of suppressing unintended erasure of information at the non-recording time by optimizing a magnetic domain structure of a magnetic pole layer. A thin film magnetic head is constructed so that in the case where a magnetic pole layer has a...

20060028765 - Magnetic head having a heater circuit for thermally-assisted writing: A magnetic head for thermally-assisted writing of data to a disk is disclosed. In one illustrative example, the magnetic head includes a write head element and a heating element which is a resistive infared radiator. The heating element is coupled to at least one via pad which is exposed on...

20060028766 - Three dimensional magnetic memory and/or recording device: An electronic memory and/or recording device includes a three dimensional magnetic medium. Three dimensional magnetic medium includes a plurality of magnetic sublayers, each of the magnetic sublayers being separated from one other by non-magnetic interlayers....

20060028767 - Head arm assembly, head stack assembly and disk drive unit using the same: A head arm assembly comprises a slider, a drive arm, a trace; and a load beam having a hinge portion and a slider mounting portion; wherein the slider mounting portion has a slider support portion to support flying attitude of the slider. The slider support portion has a slider mounting...

20060028768 - Magnetic disk device and suspension: Embodiments of the invention suppress head jump at the time of application of an impact to provide for an excellent impact resistance performance in a magnetic disk device. In one embodiment, a magnetic disk device comprises a disk that records information, a slider mounting thereon a magnetic head, and an...

20060028769 - Head drum assembly having a rotary head drum and a method for processing a rotary drum: A head drum assembly and a method for cutting a rotary drum for the head drum assembly are provided. The head drum assembly includes a stationary drum fixed around a shaft, and a rotary drum rotatably mounted around the shaft. A magnetic head unit is mounted to the rotary drum...

20060028770 - Magnetic head with electro lapping guide and manufacturing method: Embodiments of the invention reduce the throat height of a single pole type head with high accuracy. In one embodiment, a head with an electro lapping guide for controlling a write head's throat height during air bearing surface processing is made. Air bearing surface processing is performed using the electro...

20060028771 - Thin film magnetic head, method of manufacturing the same, and magnetic disk drive: Provided are a thin film magnetic head capable of inhibiting an excessive temperature rise while reducing its size in accordance with a higher recording density, and obtaining a higher read output, a method of manufacturing the same, and a magnetic disk drive using the thin film magnetic head. A heat...

20060028772 - Adjacent magnetoresistive read head and method for obtaining position error signal: A read head for reading magnetically stored data in adjacent tracks of a medium has at least two elongate bodies, each having at least one magnetoresistive part. The magnetoresistive parts have sensor portions defined along a length of the elongate bodies, by electrical connections to the magnetoresistive parts. A shield...

20060028773 - Magnetoresistive device, thin film magnetic head, head gimbal assembly, head arm assembly, magnetic disk drive and method of drive magnetoresistive device: Provided is a magnetoresistive device capable of stably maintaining sufficient output characteristics even under a higher temperature environment while responding to a demand for a higher recording density. The magnetoresistive device comprises an MR film including a fixing layer made of IrMn, an outer pinned layer of which the magnetization...

20060028774 - Antiferromagnetic stabilized storage layers in gmram storage devices: A giant magnetoresistive memory device includes a magnetic sense layer, a magnetic storage layer, a non-magnetic spacer layer between the magnetic sense layer and the magnetic storage layer, and an antiferromagnetic layer formed in proximity to the magnetic storage layer. The antiferromagnetic layer couples magnetically in a controlled manner to...

20060028775 - Magnetic detecting element provided with free layer having layered-ferri configuration: A magnetic detecting element, which can suppress change in output asymmetry even if the magnetization direction of a pinned magnetic layer is changed 180°, is provided. The magnetic-film-thickness of a second free magnetic layer is increased so as to be greater than that of a first free magnetic layer and...

20060023328 - Auto-ranging attenuators for read channels: A recording system, such as a magnetic or optical recording system, sets input attenuation level setting and variable gain amplifier (VGA) operating region during zero gain start (ZGS) by sharing the ZGS adjustment between attenuator settings and VGS gain setting. Further adjustment is made to attenuator settings and VGS gain...

20060023329 - Magnetic recording and reproducing apparatus: In the present invention, with respect to a convex-concave structure necessary for respective functions of a servo area in a perpendicular magnetic recording medium, a specification of configuration and magnetic property of a convex-concave magnetic layer of the perpendicular magnetic recording medium is set so as to overcome a demagnetizing...

20060023330 - Hard disk device: A hard disk device is to be mounted onto a playing apparatus to play data in the hard disk device, and includes a casing, a spindle, a power supply circuit and a VCM coil accommodated within the casing, a recording medium disk rotatably supported on the spindle, an arm mechanism...

20060023331 - Disk drive with selectable power source for heater in a slider: A disk drive with switchable power levels for the heaters in the sliders is disclosed. The invention includes a switch for the electrical circuit of each heater which selects between two or more voltages to apply to the power control element and the heater with at least a high and...

20060023332 - Method for using a minimum latency loop for a synchronization system in a hard disk drive: The method and architecture improve the robustness of a synchronization system through a minimum latency loop, for Hard Disk Drives (HDD), for example, wherein synchronous detection processing is performed for timing recovering of a correct sampling phase and frequency and by a first acquisition step of a known preamble signal...

20060023333 - Method and apparatus for testing tunnel magnetoresistive effect element, manufacturing method of tunnel magnetoresistive effect element and tunnel magnetoresistive effect element: A method for testing a TMR element includes a step of measuring a plurality of resistances of the TMR element by feeding a plurality of sense currents with different current values each other through the TMR element, a step of calculating a ratio of change in resistance from the measured...

20060023336 - Cleaning read/write heads of a magnetic tape recording system: One embodiment of a method is provided of cleaning one or more read/write heads of a magnetic tape recording system using a magnetically recordable cleaning tape in the system. An initial target error rate is registered in the system. The system performs a cleaning operation including pulling a portion of...

20060023335 - Library apparatus: A library apparatus includes a storage shelf that has a plurality of cells for housing a cartridge that stores a plurality of recording media; a recording and reproducing unit that performs recording/reproducing of information to/from the recording media; and a conveying mechanism that conveys the cartridge to a predetermined position...

20060023334 - Medium for use in a tape drive apparatus, tape cartridge and tape drive apparatus: A medium for use in a tape drive apparatus has a first portion having magnetically stored information and a second portion having a bar code. In one embodiment the bar code is located on a transparent leader segment of the tape medium for optical detection. The bar code is printed...

20060023337 - Brushless motor and disk drive apparatus: A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second...

20060023338 - Head gimbal assemblies for very low flying height heads with optional micro-actuators in a hard disk drive: A head gimbal assembly may include a piezo layer mechanically coupled with the slider. Bending the piezo layer alters flying height. Alternatively, it may include a piezo element mechanically coupled by a flexure to the slider top near the read-write head, which when excited, bends the flexure to alter the...

20060023339 - Method of self servo write with low density gas: Embodiments of the invention provide a disk device capable of writing highly accurate servo data using an extremely simple technique, and a manufacturing method therefor. According to one embodiment, a method for manufacturing a disk device includes: mounting a magnetic disk and each assembly for driving the magnetic disk, such...

20060023341 - Method and apparatus for micro-actuator stroke sensitivity calibration in a hard disk drive: A sinusoidal signal is added to the notch filtered micro-actuator control signal stimulating the micro-actuator. The voice coil control signal is notch filtered to remove the frequency component of the sinusoidal signal before it stimulates the voice coil motor. The micro-actuator control signal is notch filtered to remove the frequency...

20060023340 - Servo controller method and apparatus for high tracks per inch hard disk drives using a delay accomodating state estimator: The invention applies to servo controllers for at least the voice coil motor of a hard disk drive. Today, many control algorithms require 80 to 90 percent of the sampling period to complete their calculation of the next control, making computation time delay no longer negligible. The invention accommodates the...

20060023342 - Disk drive, positioning method for head, and servo system: Embodiments of the invention compensate for repeatable run-out errors without causing servo system instability. In one embodiment, HDD has a peak filter on a feedback route of a servo system. The peak filter is designed so that a rotating frequency of a magnetic disk, the high-frequency components contained in the...

20060023343 - Servo controller in magnetic disk drive: Embodiment of the invention inhibit an effect of repeatable runout errors without expanding servo data areas of the magnetic disk. With regard to low frequency components of positional information read by a magnetic head, which are substantially equivalent to a rotational frequency of a magnetic disk, a servo controller according...

20060023344 - Method for inspecting track pitch in a magnetic disk: Embodiments of the invention provide techniques to inspect the track pitch of a magnetic disk. In one embodiment, the track pitch is inspected using the servo information that was written onto the magnetic disk. A PES gain is set to be PG0. A head is moved to a position K...

20060023345 - Tape guide assembly and tape cartridge format: A tape guide assembly for a rotary scan tape drive supporting multiple size tape cartridges is disclosed. The tape guide assembly includes a plurality of tape guides. During deployment of tape from a tape cartridge, all of the tape guides move to respective deployed positions. During the movement, only a...

20060023346 - Magnetic tape cartridge storage apparatus with lock and release device: A storage magazine for data cartridges includes a plurality of storage slots located side-by-side and potentially above one another. The storage slots are defined by parting walls disposed at spaced intervals between top and bottom surfaces of the storage magazine. The parting walls include a stop rib at the back...

20060023348 - Disk apparatus: An HDD has a carriage which moves a head with respect to a medium, and a voice coil motor (VCM) which drives the carriage. The VCM has a magnet, between which and a first shell formed of a magnetic substance a magnetic circuit is formed, and a voice coil which...

20060023347 - System, method, and apparatus for attaching top pole piece of a voice coil motor to a hard disk drive enclosure: A top pole piece of a voice coil motor (VCM) is attached to a hard disk drive cover without screw fasteners and with minimal loss of VCM magnetic flux capacity. A pair of leaf springs are supported at both ends, rather than by cantilever, to more uniformly distribute mechanical stress...

20060023349 - Flexible disk drive having an eject base usable as a cover: In a flexible disk drive for a flexible disk, a main frame defines a receiving portion for receiving the flexible disk. The main frame has a principal surface which faces the receiving portion and extends in a first direction and a second direction perpendicular to the first direction. A carriage...

20060023350 - Thin flexible disk drive having a stopper for supporting a flexible disk at a rear surface thereof: A shutter driving mechanism has a disk shutter arm engaged with a corner portion of a shutter while a flexible disk is inserted in a thin flexible disk drive. The shutter driving mechanism drives the shutter so as to open the shutter by rotating the disk shutter arm. The shutter...

20060023351 - Bilayer coil insulation for magnetic write heads to minimize pole recession: A magnetic write head for use in a data recording system having first and second magnetic pole, the first pole having a P1 pedestal. An electrically conductive coil passes through a space between the first and second poles for inducing a magnetic flux through the yoke formed by the first...

20060023352 - Method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording: A method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording. A reverse air bearing surface head for perpendicular recording is provided with an inversed bevel shape to handle skew when recording data on a magnetic recording medium....

20060023353 - Method and apparatus for providing a write head having well-defined, precise write head pole tips: A method and apparatus for providing a write head having well-defined, precise write head pole tips. A coplanar write head pole tip processing method provides a thin-film magnetic write head pole tip layer and defines first and second pole tips from the pole tip layer. When the pole tips are...

20060023354 - Disk drive with slider burnishing-on-demand: A disk drive is described having a capability of burnishing the sliders on demand by using a heater in the slider to thermally protrude the slider. Each slider includes a heating element with a sufficient thermal expansion stroke to bring the area of the slider containing the transducer into contact...

20060023355 - Head drum assembly for magnetic recording and reproducing apparatus: A head drum assembly of a magnetic recording and reproducing apparatus includes a fixed drum secured to a shaft and a rotary drum rotatably fitted on the shaft to be opposite to the fixed drum. A motor rotor is supported in the rotary drum. A stator is installed on the...

20060023356 - Diskette housing having an integrally formed information field: A method of presenting a data storage diskette to a user is disclosed. The method includes the steps of providing the diskette and promoting that handwritten indicia be deposited directly onto an information field in labeling the diskette. In this regard, the diskette includes a housing defining first and second...

20060023357 - Medium for use in a tape drive apparatus: A tape medium has an identification segment located on a transparent leader segment of the tape medium for optical detection of the segment identification pattern. The segment identification pattern and the medium identification pattern have a predefined spatial relationship, enabling photo-optical detection of the segment identification pattern and reading of...

20060023358 - Method and apparatus for providing a three step air bearing with improved fly height performance: A method and apparatus for providing a three step air bearing with improved fly height performance is disclosed. The slider includes a funnel structure for directing air flow to a predetermined location toward a trailing edge of the slider and a collection structure for gathering air flow at the predetermined...

20060023359 - Head, head suspension assembly, and disc device provided with the same: A head includes a slider, configured to fly by an air current produced between a surface of a recording medium and a facing surface of the slider, and a head portion which is provided on the slider and records and reproduces information on and from the recording medium. The slider...

20060023360 - Method and apparatus for providing an air bearing pad having improved roll angle sigma: A method and apparatus for providing an air bearing pad having improved roll angle sigma is disclosed. Two Z-shaped air bearing pads are formed to provide two additional negative pockets for improving roll angle stiffness of the slider and for shrinking the air bearing area....

20060023361 - Magnetic head supporting mechanism: A magnetic disc apparatus having a magnetic head supporting mechanism which includes a slider, a load beam having a spring portion and a pivot, and a gimbal having a mounting portion on which the slider is mounted. The gimbal has flexible finger portions spaced from the load beam which support...

20060023362 - Grounding connection between suspension flexure and arm actuator: An actuator arm assembly of a hard disk drive. The assembly includes a flexure that is attached to an actuator arm and a head coupled to the flexure. The head is coupled to a pre-amplifier circuit of the drive. The head is also electrically grounded through the flexure and the...

20060023363 - Micro-hub swage mount for attachment of suspension assembly in hard disk drive: A disc-drive assembly including an actuator arm, a load beam and a swage mount. The actuator arm has a thickness (TA), an arm tip with a width (WA). and arm-hole with a diameter (DA) in the actuator arm. The load beam has a load beam hole. The swage mount has...

20060023364 - Head supporting mechanism for magnetic disk device and connecting method thereof: A head supporting mechanism having a structure for connecting a first end of a suspension side wire, the other end thereof being connected to a magnetic head of a disk apparatus, to a circuit of a disk device via a flexible circuit board is provided, without using solder containing lead...

20060023365 - Disk apparatus having housing modification to prevent sticking of latch magnet: An HDD has a latch mechanism which locks a carriage having a read/write head at a retreated position. The latch mechanism has a latch arm which has a claw to engage with a projection of the carriage. A permanent magnet is embedded in a rear end of the latch arm,...

20060023366 - Magnetic recording apparatus: A magnetic recording apparatus comprises a magnetic disk; a magnetic head, including a magnetoresistive device, for reading information from the magnetic disk; an arm attached to the magnetic head and swings so as to load and unload the magnetic head to or from the magnetic disk; a magnetic field applying...

20060023367 - Eliminating esd exposure for read/write head with heating element: Embodiments of the present invention provide a grounded conductive layer between the heater and the lower magnetoresistive (MR) shield in the read/write head structure. The grounded conductive layer eliminates or at least substantially prevents the accumulation of charges on the lower MR shield as a result of the voltage supplied...

20060023368 - Magnetic recording apparatus: A magnetic recording apparatus includes a magnetic recording media, a spindle motor which rotates the magnetic recording media, a flying head slider including a read head using a giant magnetoresistive element, an actuator which moves the head slider over the magnetic recording media, a chassis which houses the above members...

20060023369 - Extraordinary magnetoresistance sensor with perpendicular magnetic biasing by a ferromagnetic multilayer: An extraordinary magnetoresistance (EMR) sensor uses a ferromagnetic multilayer to provide perpendicular magnetic biasing for the sensor. The ferromagnetic multilayer has intrinsic perpendicular magnetic anisotropy and is preferably on top of the EMR active film. The multilayer comprises alternating films of Co, Fe or CoFe and Pt, Pd or PtPd...

20060023371 - High sensitivity spin valve designs with ion beam treatment: A method of manufacturing a GMR, TMR or CPP GMR sensor having a smooth interface between magnetic and non-magnetic layers to improve sensor performance by exposing a layer to a low energy ion beam prior to depositing a subsequent layer....

20060023372 - Magnetoresistive element magnetic head, magnetic recording apparatus, and magnetic memory: A magnetoresistive element includes a first magnetic layer a magnetization direction of which is substantially pinned, a second magnetic layer a magnetization direction of which varies depending on an external field, a magnetic spacer layer provided between the first magnetic layer and the second magnetic layer, and electrodes which supply...

20060023370 - Three terminal magnetic sensor for magnetic heads with a semiconductor junction and process for producing same: The TTM sensor includes a semiconductor structure and a spin valve structure, where the semiconductor structure includes at least two layers. Two of the three leads of the TTM sensor are engaged to the semiconductor layers, where a semiconductor junction between the layers is disposed between the two leads. Generally,...

20060023374 - Exchange coupling film and magnetoresistive element using the same: An exchange coupling film including an antiferromagnetic layer and a ferromagnetic layer in contact with the antiferromagnetic layer so as to generate an exchange coupling magnetic field is provided. A PtMn alloy is used as the material of the antiferromagnetic layer. Crystal planes of the antiferromagnetic layer and the ferromagnetic...

20060023373 - Magnetic head with improved free magnetic layer biasing for thinner cpp sensor stack: In a CPP magnetic head a free magnetic layer and a magnetic biasing layer are disposed within a central layer stack. To pin the magnetization of the bias layer, an antiferromagnetic (AFM) layer is fabricated on the sides of the central stack. The AFM layer may be comprised of an...

20060023375 - Magnetoresistive sensor with a thin antiferromagnetic layer for pinning antiparallel coupled tabs: A spin valve sensor with a thin antiferromagnetic (AFM) layer exchange coupled to a self-pinned antiparallel coupled bias layer in the lead overlap regions is provided. The spin valve sensor comprises a ferromagnetic bias layer antiparallel coupled to a free layer in first and second passive regions where first and...

20060023377 - Method for fabricating a cpp magnetic transducer using cmp-assisted lift-off and a cmp-resistant metal layer: A method is described which uses a CMP resistant metal layer to replace the upper dielectric layer in the track width definition phase of a TMR or CPP spin valve magnetic head. The metal which is selected to be resistant to the CMP process can be rhodium (Rh), platinum (Pt),...

20060023376 - Trilayer saf with current confining layer: A current perpendicular to plane (CPP) GMR sensor having first and second outer pinned layers and a trilayer free layer therebetween. The free layer includes first and second outer magnetic layers, and a partially oxidized magnetic layer disposed there between. The middle partially oxidized layer is antiparallel coupled with the...