Dynamic magnetic information storage or retrieval inventions 12/05

20050286149 - File system layout and method of access for streaming media applications: A file system for streaming media uses at least one set of a plurality of storage bands that are arranged sequentially on a magnetic storage disk. Each storage band contains a plurality of storage blocks. At least one data file that is formed from a plurality of sequential data blocks...

20050286150 - System and method for generating disk failure warning using read back signal: The read-back signal from a HDD head is demodulated to find the pitch frequency of the head, which can be compared to a baseline value to determine if it has increased, indicating a possible failure due to contamination or lubricants pick up. Or, the pitch frequency can be used during...

20050286151 - Enhanced dibit extraction: A method for characterizing a read channel of a disk drive by storing a pseudorandom number (PN) sequence at a first location on a recording surface of the disk drive, and storing the PN sequence at a second location on the recording surface. The PN sequence at the first location...

20050286152 - Magnetic disk device and read/write method: Embodiments of the invention eliminate the unnecessary disk format margin to raise the format efficiency. In one embodiment, a disk control unit (MPU) predicts the variation of the next servo sector pulse interval based on each learnt servo sector pulse interval. From this predicted interval, an optimal variation of the...

20050286154 - Large protrusion recording head for controlled magnetic spacing recording/reading: A magnetic head structure having enhanced protrusion and having a first pole structure, a second pole structure forming a yoke with the fist pole, a coil structure disposed in the yoke, and a layer of partially cured polymer operatively coupled to the yoke. Also disclosed is a magnetic head having...

20050286153 - Position sensor: In one embodiment, a load position sensor for a tape drive includes a tape cartridge loading mechanism, a head movable in response to movement in the loading mechanism, and a sensor operatively coupled to the head for sensing a position of the head....

20050286156 - Disk unit and manufacturing method thereof: A disk unit is capable of detecting a track, the track width of which deviates from a normal value, with high accuracy at high speed. A HDD includes a read head, a disk and defective-track detecting part. The disk has servo data including bursts A, B written thereon. The servo...

20050286155 - Magnetic recording and reproducing apparatus and magnetic recording medium: The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, Tp, and Wr where W1 represents an upper...

20050286158 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050286160 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050286159 - Identification of laterally positioned servo bands employing differentiating charcteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050286157 - Magnetic tape drive: A magnetic tape drive of the present invention is the drive that has a head unit comprising a servo head for trackings and a recording head group, which comprises a plurality of data signal recording heads, wherein the plurality of the data signal recording heads are formed at a pitch...

20050286161 - Storage system having a reader with a light sensing portion inclined with respect to an axis of a label of a storage medium: A storage system includes at least one storage medium having a label, the label having a width extending along a first axis. The tape storage system further includes a reader to read the label based on light scanned across the label, where the reader has a light sensing portion extending...

20050286162 - Disk drive device and method of assembling disk drive device: A plurality of disks are supported and rotated by a spindle motor in a case. A stabilizer is located in the case. The stabilizer has a stabilizer plate which is located between the disks and opposed to surfaces of the disks with gaps therebetween and a plurality of support portions...

20050286163 - Hard disk drive with damping plate: A hard disk drive with a housing including a base member supporting a spindle motor rotating a data storage disk and an actuator having a read/write head, a cover member coupled to the base member to encompass the spindle motor and the actuator, a damping plate spaced a predetermined distance...

20050286164 - Outer hub assembly and spindle motor including the same in hard disk drive and method for servo-track writing: A spindle motor, which rotates a plurality of data storage disks in a hard disk drive, the spindle motor including: a shaft; an inner hub rotatably installed on an outer periphery of the shaft; and a hub assembly, which includes: an outer hub detachably coupled to an outer periphery of...

20050286165 - Disk chucking mechanism having a fan-shaped driving pin: In a disk chucking mechanism for use in a flexible disk drive adopting a spindle motor (300) of a Hall sensor-less method, a driving pin (317A) freely received in a driving oval hole (46b) of a flexible disk (40) has a shape (shape of fan) where a catch factor portion...

20050286166 - Method of manufacturing thrust plate, method of manufacturing shaft for dynamic pressure bearing, dynamic pressure bearing, spindle motor and recording disc driving apparatus: The invention provides a method of inexpensively manufacturing a thrust plate having a groove formed in an inner peripheral surface, in a structure in which a dynamic pressure bearing is structured by using a shaft in which a thrust plate is fitted to a shaft main body. A method of...

20050286167 - Spindle motor and recording-disk drive furnished with the spindle motor: Spindle motors, one example being furnished with: a housing member perforated by a round through-hole; a sleeve disposed within the housing through-hole; a shaft; fluid dynamic-pressure bearings that support the shaft against the sleeve letting one rotate relative to the other; and an electroconductive member contacting on the housing member...

20050286168 - Drive unit and manufacturing method thereof: A disk drive unit of the present invention includes a disk, a spindle motor, and an adhesive for fixing the disk to the spindle motor. The adhesive is disposed on a connecting portion between the spindle motor and the disk. The adhesive is thermoset resin or light curing resin or...

20050286169 - Slider with underpass leads and methods of fabrication: A slider is disclosed having a continuous coil including front coils, back coils, and a center tab, a write head including upper and lower poles which sandwich at least a portion of the front coils of the continuous coil, and at least one underpass lead, which passes under a portion...

20050286170 - Magnetic head for perpendicular magnetic recording: The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the recording surface of the recording medium, and comprises a magnetic pole which...

20050286171 - Head parking ramp for data storage device: A head parking ramp for a data storage device to park a read/write head at a position out of a disk when the disk stops rotating. The head parking ramp includes a fixed portion fixed to a base member, a support portion extending from the fixed portion toward the disk...

20050286172 - Voice-coil motor and positioning device or servo-track writer including a voice-coil motor: A voice-coil motor includes a stator and a rotor, which is pivoted about a swivel axis, with respect to the stator. The rotor and/or the stator has a printed circuit board that includes at least one circuit-board conductor, and the at least one circuit-board conductor is arranged such that it...

20050286173 - Stop with adjustable stiffness: The present invention provides an adjustable crash stop. The stiffness or load of the crash stop may be varied by rotating the stop and thereby varying the point of contact between the actuator assembly and the crash stop. The point of contact is on an arcuate contact surface of a...

20050286174 - Head drum assembly and magnetic recording/reproducing apparatus having the same and a method for assembling a head drum assembly: A head drum assembly and method of a magnetic recording/reproducing apparatus are disclosed. In the assembly, for application of a pre-load on the upper and the lower bearings, the upper and the lower bearings are installed in a loosely fitting manner on the shaft. An elastic member for applying a...

20050286175 - Micro-actuator, head gimbal assembly, disk drive unit and manufacturing method thereof: A head gimbal assembly (HGA) including a slider, a micro-actuator and a suspension to load the slider and the micro-actuator. The micro-actuator includes a support base and a piezoelectric unit used for both position displacement adjustment and flying height adjustment. The support base includes a base, a moving plate, and...

20050286176 - Head gimbal assembly with flying height adjuster, disk drive unit and manufacturing method thereof: A head gimbal assembly (HGA) comprising a slider, a suspension to load the slider, and a flying height adjuster to adjust the flying height of the slider. The flying height adjuster has at least one thin film piezoelectric piece or ceramic piezoelectric piece, which is disposed between the slider and...

20050286177 - Extended pinned layer on top of lead/hb to avoid amplitude flipping: A magnetoresistive sensor having a self pinned structure formed above a free layer and having a pinning stabilization structure to avoid flipping of the magnetic moment of the pinned layer. The pinned layer stabilization structure includes hard magnetic structures formed over the leads in an area outside of the active...

20050286178 - Heat sink and high thermal stability structure for cpp sensor: A current perpendicular to plane (CPP) sensor having a heat sink structure disposed beneath the strip height of the sensor. The heat sink is preferably in thermal contact with one of the shields/leads of the sensor while being electrically insulated from the other shield/lead....

20050280912 - Recording medium, and method and apparatus for recording data in the same: A recording medium, and a method and apparatus for recording data in the same are disclosed. The method for recording data in a write-once recording medium includes the steps of (a) allocating a plurality of record areas to a user data area contained in the recording medium, (b) recording file...

20050280913 - System for securing recordings of digital data: A system for controlling copying including at least one physical support including a recording of digital data, a computer that reads and duplicates the physical support, and recordable duplication supports, wherein a format for recording information on the physical support is determined in such a manner as to inhibit duplication...

20050280914 - Retry reordering in hard disk drives: A hard disk drive that updates a retry look-up table to be commensurate with a successful retry read operation. The drive may contain a retry look-up table that contains a plurality of retry steps. Each retry step may have a different read parameter that is changed in an attempt to...

20050280915 - Versatile dual port connector element arrangement: A hard disk controller (HDC) chip has interchangeable “A” and “B” ports of differential connector element pairs, with one connector element of each pair being disposed closest to the edge of the chip and with the other element inboard of it to facilitate connection to more than one printed circuit...

20050280917 - Data track per inch optimization through compilation of voltage gain amplifier control signal data: A method for providing data to determine an optimal track per inch (“TPI”) density for a head of a hard disk drive. The method utilizes a VGA control signal that is used in an automatic gain control loop of the disk drive. First VGA values are stored during a routine...

20050280916 - Dynamic stroke optimization in the self servo-write process: Systems and data storage devices in accordance with embodiments of the present invention can execute instructions to determine a width of a data stroke along a rotatable medium. In one embodiment, the width can be determined by measuring a distance from a marker zone edge of a template pattern on...

20050280918 - System, method, and apparatus for disk drive actuator pivot set height tooling with active servo compensation: An automated system for setting the linear distance from a mounting surface of a pivot cartridge to critical features on actuator arms is disclosed. This distance is set to eliminate the tolerance incurred via normal manufacturing of these components. The system adjusts for every component to customize each actuator and/or...

20050280919 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050280920 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050280921 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050280922 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050280923 - Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns: In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example,...

20050280925 - Magnetic recording and reading apparatus with means for preventing noise: A magnetic recording and reading apparatus includes a noise preventing member provided to at least one of a deck and a holder to cover an upper side of a head drum. Noise generated by the contact between the head drum and the magnetic tape is substantially prevented from being transmitted...

20050280924 - Noise prevention apparatus and magnetic recording and reproducing apparatus having the same: A noise prevention apparatus and a magnetic recording and reproducing apparatus having the same are provided to such that a microphone unit records sound produced from outside the magnetic recording and reproducing apparatus in an optimum state. The noise prevention apparatus includes a noise damping part installed adjacent to at...

20050280926 - Deck for magnetic recording/reproducing apparatus: Disclosed is a deck for a magnetic recording/reproducing apparatus. The deck has a chassis in which a plurality of structures constituting a mechanical mechanism for loading a tape and recording or reproducing information; and a switch/sensor circuit board in which a plurality of switches and sensors constituting an electronic mechanism...

20050280929 - Deck plate and magnetic recording/playing apparatus having the same: A deck plate integrally forming the drum base and the guide rail, and a magnetic recording/playing apparatus having the same are disclosed. The deck plate has a chassis integrally forming a drum base for slopingly supporting a head drum assembly in a predetermined angle together with a guide rail for...

20050280927 - Magnetic recording and/or reading apparatus and manufacturing method of power transmitting gear: Provided are a magnetic recording and/or reading apparatus and a method of manufacturing a power transmitting gear. The magnetic recording and/or reading apparatus includes a power transmitting gear. The power transmitting gear has one end coupled to a loading motor and the other end coupled to a plurality of link...

20050280928 - Pole base loading apparatus and main chassis for magnetic recording/reading device: A pole base loading apparatus and a main chassis for a magnetic recording/reading device having an improved structure. The pole base loading apparatus includes a pair of pole base units for guiding a tape so that the tape is wound around a head drum as it reciprocates on a main...

20050280930 - Cassette tape ejecting apparatus, and magnetic recording/reproducing apparatus having the same: A cassette tape ejecting apparatus has a chassis having a pin boss, a hook hole and a locking groove formed as a single body, a cassette housing installed on the chassis to be transferred to a tape insertion position and a tape ejection position, a cassette tape being mounted thereon,...

20050280931 - Lever fixing apparatus of cassette housing and magnetic recording and reproducing apparatus with the same: A lever fixing apparatus of a cassette housing has at least one lever for connecting a cassette holder to a chassis and at least one snap fixing unit for connecting the lever to at least one of the cassette holder and the chassis in a snap manner to hingedly fix...

20050280932 - Hard disk drive housing having isolated post to improve mechanical shock resistance: A hard disk drive with a post that extends from a base of a base plate. The base has a slot adjacent to the post. The slot attenuates a shock wave that propagates through the base plate of the drive....

20050280933 - Thin film head and its production: A thin-film head is provided wherein a protective film is formed on at least the surface facing a recording medium, said protective film having the composition represented by the formula (I): SiCXHYOZNW [where X=3-26, Y=0.5-13, Z=0.5-6 and W=0-6, in terms of atomic ratio], having a film thickness of 1-3 nm...

20050280934 - Thin-film head and its production: A thin-film head is provided wherein a protective film is formed on at least the surface facing a recording medium, said protective film containing Si, C and H in amounts of 3-9 at %, 61-81 at % and 16-30 at %, respectively, having a film thickness of 1-3 nm and...

20050280935 - Ampere wire write head with confined magnetic fields: A magnetic recording head comprises a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat...

20050280936 - Magnetic head for perpendicular magnetic recording and method of manufacturing same: A pole layer has an end that is located in a medium facing surface and that incorporates a first side closer to a gap layer and a second side opposite to the first side. A shield layer has an end that is located in the medium facing surface and that...

20050280937 - Magnetic head for perpendicular magnetic recording and method of manufacturing same: A magnetic head comprises a pole layer, a gap layer, a shield layer, a nonmagnetic layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; a two layered coupling layer disposed on a region of the...

20050280938 - Thin-film magnetic head, method of manufacturing the same, head gimbal assembly and hard disk drive: A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on the side of the medium-opposing surface opposing a recording medium, a write shield layer opposite the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface,...

20050280939 - Thin-film magnetic head, method of manufacturing the same, head gimbal assembly and hard disk drive: A thin-film magnetic head has a laminated construction comprising a main pole layer having a magnetic pole tip on a side of the medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole tip forming a recording gap layer, on the side of the medium-opposing surface,...

20050280940 - System and method for improving suspension-to-slider attachment in a hard disk drive: A system and method are disclosed for improving suspension-to-slider attachment in a hard disk drive. A slider having a number of bond pads on its leading edge and a number of bond pads on its trailing edge is to be coupled to a suspension flexure having a number of leading...

20050280941 - Magnetic head slider and method of manufacturing the same: In order to realize a shape of an air bearing surface of a magnetic head slider which is capable of coping with a lowering of flying height and which has high reliability, at the time of polishing the air bearing surface of the magnetic head slider by bringing the air...

20050280942 - Negative pressure type head slider and disk drive: A disk drive including a negative pressure type head slider having a transducer for reading/writing data from/to a disk having a plurality of tracks, and an actuator for moving the head slider across the tracks of the disk. The actuator includes an actuator arm rotatably mounted on a base of...

20050280943 - Slider and rotating disk type storage device: A stable kinetic performance is to be exhibited even in the case of such a small-sized slider as Femto slider. In one embodiment, an air bearing surface (ABS) of a slider comprises a first pad constituting portion extending from a leading edge side to a trailing edge side, a second...

20050280944 - Method for providing electrical crossover in laminated structure: An externally wireless laminated suspension for a hard disk drive are disclosed. In one embodiment, the externally wireless laminated suspension has an insulating layer to electrically isolate a first and second electrical trace from a conductive support layer. The second electrical trace crosses over the first electrical trace. The first...

20050280945 - Fluidic stripper assembly with load/unload ramp: An apparatus which provides improved positional control for an access element moveable adjacent a rotatable surface, such as a data transducing head adjacent a data recording disc in a data storage device. The apparatus comprises a downstream fluidic stripper with one or more cantilevered arms which project proximate a corresponding...

20050280946 - Wiring board, magnetic disc apparatus, and method of manufacturing wiring board: Disclosed is a wiring board including a first polyimide layer of heat-cured photosensitive polyimide, a copper layer pattern formed by growing an electrolytic copper plating layer on the polyimide layer, and a second polyimide layer of heat-cured photosensitive polyimide, the second polyimide layer covering the copper layer pattern. Also, disclosed...

20050280947 - Windage stripper for an actuator and rotating disc: An actuator with a moveable block and supporting a cantilevered arm has a windage stripper supported for movement in unison with the block and spanning a cantilevered length of the arm. The actuator has a load member connected to the arm and supports a data head at a cantilevered end,...

20050280948 - Disk drive and arm coil support assembly: A disk drive and an arm coil support assembly are to be provided which enables a trace to be disposed with a simple construction without the need of machining arms. In one embodiment, a trace for connection between a head and an FPC is disposed on an opposite surface of...

20050280949 - Head-drum assembly for magnetic recording/reproducing apparatus, and a method of manufacturing a head-drum assembly: A head-drum assembly for a magnetic recording/reproducing apparatus, and a method of manufacturing a head/drum assembly, with a simplified setup structure of a fixed drum on a main chassis are provided, where a shaft is inserted into a fixed drum and has a connection unit at least a portion of...

20050280950 - Head drum assembly for magnetic recording/reproducing apparatus: A head drum assembly for a magnetic recording/reproducing apparatus includes a shaft on which a rotary drum is rotatably supported, and a fixed drum firmly fixed to the shaft and supported on a main deck. The fixed drum includes a fixed drum body facing the rotary drum and a fastening...

20050280951 - Magnetic recording/reading apparatus: A magnetic recording/reading apparatus comprises a head drum disposed on a deck to record or read information on/from a magnetic tape. An FPC fixing member is disposed on the deck to fix an FPC having a signal line to transmit a signal. The apparatus is configured to prevent noise generated...

20050280952 - Magnetoresistive head: A magnetoresistive head includes a first magnetic shield, a first electrode terminal arranged on the first magnetic shield at an entry side of a magnetic field from a carrier, a third electrode terminal that is spaced from the first electrode terminal, and arranged on the first magnetic shield at a...

20050280953 - Self-pinned magnetic detecting element: A CPP magnetic detecting element having a pinned magnetic layer whose magnetization is fixed by its uniaxial anisotropy in a structure that CIP magnetic detecting elements do not allow. In the CPP magnetic detecting element, the upper and lower surfaces of a pinned magnetic layer is disposed between nonmagnetic metal...

20050280956 - 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...

20050280955 - Magnetic detecting element having a self-pinned layer: A CPP magnetic detecting element having a pinned magnetic layer whose magnetization is fixed by its uniaxial anisotropy in a structure that CIP magnetic detecting elements do not allow. In the CPP magnetic detecting element, the upper and lower surfaces of a pinned magnetic layer having an artificial ferrimagnetic structure...

20050280954 - Magnetic sensing device with multilayered pinned magnetic layer having magnetostriction-enhancing layer: A magnetic sensing device is presented that has a multilayer material with a pinned magnetic layer, a nonmagnetic material layer, and a free magnetic layer. The pinned magnetic layer is a composite with a nonmagnetic intermediate layer and magnetic thin-film layers separated from each other by the nonmagnetic intermediate layer....

20050280957 - Cpp differential gmr sensor having antiparallel stabilized free layers for perpendicular recording: A current perpendicular to plane (CPP) differential giant magnetoresistive (GMR) sensor that is insensitive to stray longitudinal and transverse magnetic fields....

20050280958 - Dual type magnetic sensing element wherein deltarxa in upstream part in flow direction of electric current is smaller than deltarxa in downstream part: In a magnetic sensing element, the amounts of spin-dependent bulk scattering in the upstream part of a multilayer film and in the downstream part of the multilayer film are controlled to be asymmetric. Thus, a value ΔR×A, which represents the variation in magnetoresistance×element area, for the upstream part of the...

20050280959 - Longitudinal bias structure with improved magnetic stability: A GMR sensor having improved longitudinal biasing is provided as is a method of forming it. The improved biasing is provided by longitudinal biasing structures in which a soft magnetic layer is interposed between a hard magnetic biasing layer and the lateral edge of the GMR sensor element. The soft...

20050280960 - Magnetic random access memory array with coupled soft adjacent magnetic layer: An MTJ element is formed between orthogonal word and bit lines. The bit line is a composite line which includes a high conductivity layer and a soft magnetic layer under the high conductivity layer. During operation, the soft magnetic layer concentrates the magnetic field of the current and, due to...

20050275962 - Overlapping data track access: A data recording apparatus includes a surface having a plurality of data tracks with leading track portions. A head moves along head paths over the data tracks to provide data access. The data access has a reduced reliability along a limited number of the leading track portions. Trailing path additions...

20050275963 - Variable frequency chevron in printed media reference pattern to improve servo demodulation: Reference patterns in accordance with the present invention can include variable frequency chevrons incorporated into a reference pattern on a printed media surface to improve servo demodulation. In one embodiment, the reference pattern can include one or more servo wedges having a preamble including digital information at a first frequency...

20050275964 - Head position control method and disk apparatus: A head position control method controls a position of a head of a first apparatus with respect to a disk which has been formed with a track and has been recorded with servo information including position information in servo frames by a second apparatus that is different from the first...

20050275965 - Lockout ramp: A hinged flap including an angled surface and a flat surface prevent the incorrect loading of a 3592 data cartridge into a dedicated pass-through slot. The angled surface of the hinged flap is pushed by a recessed angled surface in the front face of the 3592 data cartridge to force...

20050275966 - Assembly rail corners shaped to reduce shock: An assembly includes a housing with a base. A mounting pad is positioned on the base. The assembly also includes a micromechanical device coupled to the mounting pad. First and second side rails extend from the base to form first and second rail corners. The first and second rail corners...

20050275967 - Products and processes for providing haptic feedback in resistive interface devices: Products and processes for providing haptic feedback in a user interface are disclosed. One exemplary embodiment of an apparatus comprises a first element comprising a first surface, a second element comprising a second surface, and an actuator configured vary a force between the first and second surfaces. In one embodiment,...

20050275968 - Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads: A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the...

20050275969 - Remote control system: t

20050275970 - Disk device and slider: A disk device rotates a disk-like storage medium, and accesses the storage medium, and a slider floats over a storage medium by the action of an airflow caused by rotation of the storage medium and can float stably despite of an environmental change. An inner rail formed on a floating...

20050275971 - Femto slider for small form factor hard disk drive: A magnetic disk drive includes a magnetic disk and a femto slider. The magnetic disk has a minimum track linear velocity of 1 to 5 m/s. In one embodiment, the magnetic disk drive includes a negative pressure type femto slider and adopts a load/unload method. A gram load “GL” of...

20050275972 - Disk apparatus: A disk apparatus, e.g., a magnetic disk apparatus has a storage medium in the form of a disk which is rotated and accessed, and is designed so as to reduce the occurrence of scratches on the storage medium due to contact between the head and the storage medium while ensuring...

20050275973 - Single lever type actuator latch apparatus for disk drive: An actuator latch apparatus for locking, when an operation of a disk drive is stopped, an actuator including: a swing arm rotatably mounted on a base member; a VCM coil coupled to one end portion of the swing arm; a magnet arranged to face the VCM coil; and a yoke...

20050275974 - Magnetic reproducing head and magnetic disk apparatus: A magnetic reproducing head which reproduces information recorded on a recording medium by a vertical magnetic recording method, comprising a magnetoresistance effect element including a free layer whose resistance varies in response to a variation in external magnetization, and a hard bias layer which forms the free layer into a...

20050275975 - Novel hard bias design for extra high density recording: A hard bias structure for biasing a free layer in a MR element within a read head is comprised of a composite hard bias layer having a Co78.6Cr5.2Pt16.2/Co65Cr15Pt20 configuration. The upper Co65Cr15Pt20 layer has a larger Hc value and a thickness about 2 to 10 times greater than that of...

20050270674 - Ground rubber attached to substrate for contact magnetic printing: An elastomer pad used in a system and method for servo formatting magnetic media using contact magnetic printing is disclosed. The elastomer pad includes a substrate substantially the same shape and size as the magnetic media and an elastomer material bonded to the substrate wherein the substrate provides support for...

20050270675 - Method of evaluating positioning accuracy of a magnetic head tester: A method of evaluating the positioning accuracy of a magnetic head tester can accurately test magnetic heads and so can reliably provide non-defective goods. In a method of evaluating the positioning accuracy of a magnetic head tester that tests the performance of a magnetic head 14 by carrying out writing...

20050270676 - Magnetic recording apparatus: A method of enhancing the thermal stability of gray codes is disclosed. The gray code block in a servo area is recorded with a combination of two different magnetization directions. When the two different magnetization directions are expressed as “+” and “−”, the information “1” is recorded as “+−+−” or...

20050270677 - Write compensation circuit and signal interpolation circuit of recording device: A write compensation circuit of a recording device includes a first delay portion driven by a first driving voltage, for receiving a clock signal, delaying the clock signal by a first delay time, and outputting the delayed clock signal, and a voltage supplying portion for supplying the first driving voltage...

20050270678 - Data storage device and data storage device control: Embodiments of the invention provide a data storage device and its control method that are capable of minimizing the possibility of head deterioration while maintaining the minimum required sustained data rate. In one embodiment, each track is divided into three areas (A, B, and C). When a ⅓ track is...

20050270679 - Condensation compensation in a motion control system: A motion control system has an enclosed assembly that encloses moving parts. A controller controls a motion of the moving parts and has an inhibit input that inhibits the motion. A sensor provides sensor outputs that depend on an assembly temperature and an assembly humidity in the enclosed assembly. A...

20050270681 - Storage apparatus and control method therefor: A storage apparatus comprises at least one housing A in which a storage device and a controller are provided, at least one housing B in which a storage device and a peripheral device are provided, and a transmission path for connecting the storage device and the controller of the housing...

20050270680 - Storage control device and control method therefor: A storage control device comprises: a first I/O control unit for controlling read/write of data from/to one or more HDDs (Hard Disk Drives); a second I/O control unit whose current consumption is approximately equal to that of the first I/O control unit; two or more first power supply devices supplying...

20050270682 - Information recording and reproducing apparatus with power supply voltage monitoring function: Embodiments of the invention reduce the peak consumption current of a disk drive and that of its application system, and to minimize the limitation of the consumption current so that the performance deterioration of the disk drive and its application system is minimized. In one embodiment, a monitor terminal is...

20050270683 - Magnetic disk apparatus and position control method for magnetic head slider thereof: A magnetic disk apparatus includes a magnetic disk, a magnetic head slider, a controller for controlling a position of the magnetic head slider, and an load/unload mechanism for loading or unloading the slider to the disk. The disk includes a track and has at least a load zone of a...

20050270684 - Method and system for determining contact potential in a hard disk drive: A method and system for determining contact potential voltages between a slider body and a hard disk of a hard disk drive. In embodiments of the present invention, at least one continuous negative direct current (DC) voltage is applied between a slider body and a hard disk of a hard...

20050270685 - Method and system for time-shift based rotational vibration sensing in disk drives: A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a pattern on the rotating disk, and analyzing a...

20050270686 - Disk device, and positioning control method and signal-processing circuit for head: Embodiments of the invention eliminate noise from burst signals by use of a reliable and simple method. In one embodiment, the read processor of the HDD has a noise elimination circuit. The noise elimination circuit retains multiple integral values of the waveform absolute values for each period in the burst...

20050270687 - Dual source tracking servo systems and associated methods: In one example, a dual source tracking servo system includes a head assembly having a data transducer, a primary position detector for sensing the position of a magnetically stored data track, and a secondary position detector for sensing the position of a fixed reference associated with a magnetic storage medium....

20050270688 - Cartridge tray to be incorporated in cartridge drive apparatus: A cartridge tray is supported to be movable relative to a frame and capable of receiving a cartridge inserted thereinto. The cartridge tray comprises a cartridge locking lever for locking the cartridge to the cartridge tray, and a lever guard for enabling the cartridge locking lever to act to lock...

20050270689 - Screw attachment from exterior of disk drive enclosure for motors with mount bracket screw bolt pattern diameter larger than the motor hub outside diameter: A hard disk drive has a motor mounting bracket with mounting screws that attach from outside the drive and external to the seal with a screw bolt pattern diameter that is larger than an outer diameter of the motor hub. This configuration greatly reduces contamination inside the disk drive since...

20050270690 - Inert gas atmosphere replenishment structure: Method and apparatus for replenishing an inert gas atmosphere. A replenishment structure includes a reservoir which encloses an internal inert gas atmosphere. The reservoir has a permeable wall through which inert gas molecules from the internal atmosphere diffuse substantially at a first rate. A control material adjacent the reservoir provides...

20050270692 - Limit stop filter support apparatus: A limit stop filter support apparatus for use in controlling fluidic currents and limiting movement of an actuator within a housing, such as in a data storage device. First and second filter retention members extend from a filter support base to confine opposing ends of a filter used to filter...

20050270691 - Windage plate with snubber member to limit mechanical deflection: An apparatus which provides improved fluidic control includes a circumferentially extending windage plate adapted for placement adjacent a rotatable disc surface. The plate operates to direct fluidic currents established by rotation of the surface. One or more snubber members are supported by the plate to prevent localized contact between the...

20050270693 - Spindle motor having a deep-drawn baseplate: The invention relates to a spindle motor having a deep-drawn baseplate and an aperture to receive and secure a bearing system to rotatably support a rotor. To avoid having to machine the bearing receiving portion of the baseplate in a complex process, the invention provides for a separate bush to...

20050270695 - Magnetic head having a notched pole piece structure and method of making the same: A magnetic head having an improved fringing field and overwrite capability, and a method of making the same, are described. The method includes the acts of frame plating a pedestal over a first pole piece; depositing an insulator over the first pole piece and plated pedestal; chemically mechanically polishing (CMP)...

20050270694 - Thin-film magnetic head with heater in overcoat multilayer, head gimbal assembly with thin-film magnetic head, and magnetic disk drive apparatus with head gimbal assembly: A thin-film magnetic head according to the present invention comprises: a substrate; at least one magnetic head element formed on the substrate; an overcoat multilayer composed of a plurality of overcoat layers, formed on the substrate so as to cover the at least one magnetic head element; and at least...

20050270696 - Magnetic disk cartridge: A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted...

20050270697 - Magnetic disk device and magnetic head slider: A magnetic head slider includes a magnetic head mounting surface, a slider rail surface, a step air bearing surface, and a negative pressure groove. The magnetic head mounting surface is arranged in a center area with respect to a width of the slider near an air flow-out edge on the...

20050270698 - Method and apparatus reducing off track head motion due to disk vibration in a hard disk drive: The invention includes sliders provided with indented surfaces, reducing the roll center for head gimbal assemblies below the effective thickness of the slider. Head gimbal assemblies built with these sliders may reduce off-track displacements induced by disk vibration. The load beam gimbal may contact the indented surface, creating a slider...

20050270699 - Ramp member of variable inclination angle in recording disk drive: First and second guiding passages are defined in a ramp member. The first guiding passage extends along a first inclined plane intersecting with a reference plane by a first inclined angle. The second guiding passage extends along a second inclined plane intersecting with the reference plane by a second inclined...

20050270700 - Portable apparatus having head retracting function and head retracting method: A portable apparatus for reproducing audio data includes a recording medium on which the audio data is recorded, a reading head for reading the audio data from the recording medium, an acceleration sensor for detecting acceleration, a buffer memory from which the audio data is read after the audio data...

20050270701 - Magnetic head device: Recessed grooves having planar adhesion surfaces and inclined surfaces over the entire thickness of a slider, the inclined having a surface width equal to an adhered portion width at an arm of a microactuator, and form an angle with respect to the horizontal plane. The slider and the actuator are...

20050270702 - Magnetoresistance effect element: The magnetoresistance effect element can be manufactured by a conventional process and is capable of restricting influences of noises or leaked magnetic signals so that magnetic recording density can be highly improved. The magnetoresistance effect element comprises: a magnetoresistance film including a free layer; and shielding sections being respectively provided...

20050270703 - Cpp giant magnetoresistive head including pinned magnetic layer that extends in the height direction: A CPP giant magnetoresistive head includes a lower shield layer; an upper shield layer; and a giant magnetoresistive element (GMR) between the lower shield layer and the upper shield layer. The GMR includes a nonmagnetic material layer; a pinned magnetic layer; and a free magnetic layer. The pinned layer and...

20050270706 - Gmr enhancing seedlayer for self pinned spin valves: A magnetic head includes a seed layer structure comprising Al2O3, Ta, and NiFeCr seed layers. An antiparallel (AP) pinned layer structure is formed above the NiFeCr seed layer. A free layer is positioned above the AP pinned layer structure....

20050270705 - Magneto-resistive element, thin film magnetic head, magnetic head and magnetic recording/reproducing apparatus: In a structure in which an anti-ferromagnetic layer, a first ferromagnetic layer, a non-magnetic layer and a free layer are sequentially adjacent to each other, the first ferromagnetic layer is set so that a saturation magnetostriction is not greater than (+3)×10−5 and an exchange coupling magnetic field Hex between itself...

20050270704 - Magnetoresistance effect film and magnetoresistance effect head: The magnetoresistance effect film has a magnetic oxide layer for fixing a magnetizing direction of a pinned magnetic layer and a greater MR ratio. The magnetoresistance effect film has a layered structure, in which a seed layer, the magnetic oxide layer, the pinned magnetic layer, a nonmagnetic intermediate layer, and...

20050264905 - Method to protect a gmr head from electrostatic damage during the manufacturing process: ABSTRACT A simple method is provided for protecting slider mounted read/write transducers from electrostatic discharge damage during the manufacture of disk drives. The method involves placing a ball of conducting thermoplastic resin, such as a gold or silver epoxy, between the terminal pads of the transducer and using the ball...

20050264906 - Method and apparatus for reduced-state viterbi detection in a read channel of a magnetic recording system: A method and apparatus are disclosed for improving the maximum data rate of reduced-state Viterbi detectors with local feedback in magnetic recording systems. A read channel signal is processed in a magnetic recording device by precomputing branch metrics, intersymbol interference estimates or intersymbol interference-free signal estimates for speculative sequences of...

20050264907 - Method to improve data reliability on hard disk drive systems: A method for storing user data on a hard disk drive system comprises distributing user data across a plurality of independent data sectors, with each data sector including a first header having a first preamble field and a first sync mark field, and a second header having a second preamble...

20050264908 - Head protection circuit of hard disk drive: A head protection circuit that protects a write head and a magnetoresistive (MR) read head by bypassing electrostatic charge applied to the write head when the power of a preamplifier is turned “off” includes: a first differential mode switch and a first differential mode resistance connected between each end of...

20050264909 - Methods and apparatus determining and/or using overshoot control of write current for optimized head write control in assembled disk drives: The invention includes a testing method which may be applied to at least one writer in a disk drive during the self-test phase to generate write parameters, focused on the Over Shoot Control (OSC) of the write current parameter to improve the reliability of write operations by that writer. The...

20050264910 - Read/write channel embedded on-chip optimization: Embodiments of the present invention provide optimization of read/write channels in a recording system by embedding channel optimization algorithm/procedure into the channels, or a system-on-chip (SOC) where a read/write channel is integrated with a disk drive controller, according to an Embedded Channel Optimization Solution (ECOS). In one embodiment, the ECOS...

20050264911 - Storage control device and control method therefor: A storage control device comprises: a first I/O control unit for controlling read/write of data from/to one or more HDDs (Hard Disk Drives); a second I/O control unit whose current consumption is approximately equal to that of the first I/O control unit; two or more first power supply devices supplying...

20050264918 - Apparatus and/or method of controlling timing of servo pulses and disk drive using the method: Provided is a method and apparatus for adaptively controlling the timing of servo pulses in a disk drive in consideration of the amount of spindle jitter generated when a disk rotation speed is changed. The method of controlling the timing of a sector pulse for write operation includes: measuring a...

20050264915 - Disk drive: A disk drive includes a casing which houses a disk-shaped recording medium, a drive motor which holds and rotates the recording medium, a head which performs read/write operations, a head actuator movably supporting the head to move the head relative to the recording medium, and a board unit connected to...

20050264914 - Disk drive for quickly retracting head to retract area, and emergency head-unload control circuit for use in the disk drive: A reset circuit asserts a reset signal when at least a power-off detection signal or a drop detection signal is asserted. When the reset signal is asserted, an emergency unload circuit supplies a voice coil motor with a current for retracting the head to the retract area. The emergency unload...

20050264917 - Method and apparatus for servo writing in a disk drive: In a self-servo writing method, servo data is re-recorded, and thereby, servo data having worsened recording quality is rewritten. According to the method, the servo data is recorded in an entire range on a disk medium, and thereafter, the servo write direction is switched to re-record the servo data in...

20050264916 - Method of and apparatus for detecting actuator vibration in hard disc drive, and hard disc drive write control method of avoiding effect due to read/write head vibration: A method of and an apparatus for detecting an actuator vibration, and a hard disc drive write control method of avoiding an effect due to the actuator vibration. The method of detecting an actuator vibration includes: obtaining a specified number of position error signal (PES) samples while following a track;...

20050264919 - Servo write head assembly and servo writer: A servo write head assembly comprises an AC demagnetizing head that slides in contact with a magnetic tape all of which surface is magnetized in one direction of longitudinal directions thereof, and demagnetizes a data band of the magnetic tape; a servo write head that slides in contact with the...

20050264913 - System, method, and apparatus for improving the multiple velocity performance and write element protrusion compensation of disk drive sliders: An air bearing design enables a slider to fly at a higher fly height when the rotational speed of the disk is reduced to about one-third of its operational velocity. In addition, the slider has a flat profile as it scans the disk surface at a low fly height sigma,...

20050264912 - Tunable fly height using magnetomechanical effect in a magnetic head: A new structure for adjusting flying height using a magnetomechanical effect. A head includes a magnetomechanically active structure and a coil coupled to the magnetomechanically active structure, the magnetomechanically active structure responding to a magnetic field generated by the coil to expand and/or contract....

20050264922 - Correcting radial incoherence in servo track sensing: A servo track sensing system receives equalized servo data from a servo demodulator and corrects for radial incoherence in the servo data. The system has a radial incoherence estimator that receives the equalized servo data and provides a radial incoherence estimate. A sequence detector receives the equalized servo data and...

20050264920 - Efficient transition from class d to linear operation in dual-mode voice coil motor controllers: A dual-mode positioning driver (32) for a voice coil motor (22) in a disk drive system (10) is disclosed. Linear prestage drivers (38) and pulse-width-modulated prestage drivers (46) are both coupled to power transistors (50) arranged in an “H” bridge for driving the voice coil motor (22). The positioning driver...

20050264921 - Rejection of power supply variations for gain error cancellation in pulse-width-modulated motor controllers: A positioning driver (32) for a voice coil motor (22) in a disk drive system (10) is disclosed. Pulse-width-modulated prestage drivers (46) are coupled to power transistors (50) arranged in an “H” bridge for driving the voice coil motor (22), biased with a power supply voltage (VM). The pulse-width-modulated prestage...

20050264924 - Disk device: A control circuit board is opposed to an outer surface of a case in the form of a rectangular box, and an connector cable, which has connector terminals connectable with an external device, extends from the circuit board. The control circuit board has a plurality of first connector pads with...

20050264923 - Disk drive: A disk drive includes a case which contains a disk-shaped recording medium, drive motor, head, and head actuator. The drive motor supports and rotates the recording medium. The head processes information for the recording medium. The head actuator supports the head for movement and moves the head with respect to...

20050264925 - Horizontal thin film write, mr read head: A horizontal combined head is provided which has both a thin film write and an MR read element located at an air bearing surface (ABS). The read element can be formed with a track width that is independent of the track width of the write element. The MR sensor or...

20050264926 - Internally replenished enclosure: Internally replenished gas-containing enclosures and methods of internally replenishing an enclosure are described....

20050264928 - Disk spacer and spindle motor assembly employing the same: Provided are a disk spacer for an information storage device and a spindle motor assembly employing the disk spacer. The spindle motor assembly includes a spindle motor, one or more data storage disks mounted around the spindle motor, a disk clamp coupled to the spindle motor and fixing the disk...

20050264927 - Removable disk pack hub and clamp for media servowriter: The present invention provides a hub/clamp assembly for holding a disk hub in position when the hub is spin in a high speed. The hub/clamp assembly comprises of: a removable disk hub having a shaft for stacking a plurality of storage disks, a flange portion integrally attached to one end...

20050264929 - Disk drive unit and disk device provided with the same: A disk drive unit includes a spindle motor, which has a pivot and a substantially cylindrical hub which is rotatably supported on the pivot and constitutes a rotor. A disk is fitted coaxially on the hub, and an annular clamp member holding the disk is fitted on an end portion...

20050264930 - Method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference: A method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference. A cross pole tip writer is provided with a shape that is designed to reduce the saturation on the pole tip and aid in the concentration of flux to...

20050264933 - Magnetic recording head with reduced thermally induced protrusion: A magnetic recording head with reduced thermally induced protrusion. In one embodiment, a thermal expansion constraining layer comprising silicon dioxide for instance overlays a magnetic recording head. The thermal expansion constraining layer has a very low coefficient of thermal expansion. A sealant layer comprising aluminum oxide overlays the thermal expansion...

20050264931 - Notched trailing shield for perpendicular write head: During fabrication of a perpendicular write head in a wafer, at least two sides of a write pole are defined (e.g. by ion milling) while a third side of the write pole is protected by a masking material. At this stage, a material that is to be located in the...

20050264932 - Notched trailing shield for perpendicular write head: A method and apparatus for providing a pole tip structure having a shape for preventing over saturation of the pole tip structure is disclosed. A cap layer having a tail structure for reducing the saturation of the cap layer is formed over the pole structure. The tail structure includes an...

20050264934 - Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, head arm assembly with head gimbal assembly, magnetic disk drive apparatus with head gimbal assembly and manufacturing method of thin-film magnetic head: A thin-film magnetic head comprising an inductive element including at least: a lower magnetic pole; a write gap layer; and an upper magnetic pole opposed to the lower magnetic pole through the write gap layer, a width WP2 in a track-width direction at a facing-to-magnetic-medium top end of the upper...

20050264935 - Information recording tape: An information recording tape including a data-recording area and a non-data-recording area, with the data-recording area having a center-line average surface roughness Ra smaller than 3 nm and at most 100/mm2 of protuberances standing at least 20 nm high, and with the non-data-recording area having a center-line average surface roughness...

20050264936 - Disk assembly having integral clamp and/or spacer: A composite disk-clamp assembly including a clamp or spacer of a resilient material coupled to a disk by injection molded plastic so that the clamp forms an integral portion of the disk itself....

20050264937 - Head slider and magnetic recording device: A head slider to which little amount of contaminants is adhered, that can form a uniform and flat head lubricant layer surface and that has excellent ultra-low floating properties, as well as a magnetic recording device equipped with the head slider are provided. The head slider is equipped with a...

20050264938 - Magnetic head with air bearing surface protection film: Embodiments of the invention provide an air bearing surface protection film having good corrosive resistance, electrical insulative property and mechanical wear resistance in the state of an extremely thin film. In one embodiment, an air bearing surface protection film having good corrosive resistance, electrical insulative property and mechanical wear resistance...

20050264939 - Integral wear-pad for slider-disk interference detection: A slider-mounted transducer has an integral wear pad for determining interference between the transducer and a disk surface. The wear pad intensifies interference events during disk drive testing and enables the threshold for slider fly-height to be set at a lower level. This, in turn, improves disk drive reliability during...

20050264940 - Disk drive actuator latch apparatus and method: An actuator latch apparatus for a disk drive. The latch apparatus includes a metal piece disposed at one end of the swing arm, an attracting part protruded from an edge of the yoke, for attracting the metal piece by a magnetic force of the magnet, a hole formed at a...

20050264941 - Rotating disk storage device with actuator lock mechanism: Embodiments of the invention permit a magnet-based actuator lock mechanism to operate smoothly in a magnetic disk drive that uses a base made of a magnetic material. In one embodiment, the base to be used is made of a magnetic material. The actuator lock mechanism includes a rotatable arm that...

20050264942 - Rotating disk storage device with improved actuator arm: Embodiments of the invention establish electric continuity across an actuator head suspension assembly and a pivot bearing assembly without involving an increased manufacturing cost through a simple structure. In one embodiment, a carriage made of a plastic resin is provided with a pivot opening. A pivot bearing assembly is inserted...

20050264943 - Hard disk driving carriage and method of producing the same: An object is to obtain a carriage for a hard disk driving actuator by a cheap cost in which an attaching intensity of the bearing can be sufficiently enhanced. Also, an object is to obtain a carriage plate in which it is possible to align a position for a plurality...

20050264944 - Planar magnetic thin film head: A magnetic head (slider) which requires no lapping is described. The head is fabricated with an air bearing surface that is parallel to the wafer surface. The saw cuts used to separate the individual sliders from the rest of the wafer are perpendicular to the air-bearing surface and do not...

20050264945 - Horizontal thin film write, mr read head: A horizontal combined head is provided which has both a thin film write and an MR read element located at an air bearing surface (ABS). The read element can be formed with a track width that is independent of the track width of the write element. The MR sensor or...

20050264946 - Cpp thin-film magnetic head having auxiliary conductive layer behind element: A CPP thin-film magnetic head includes lower and upper shield layers separated by a predetermined distance and a thin-film magnetic head element disposed therebetween. Current flows in a direction orthogonal to the surface of the thin-film magnetic head element. The CPP thin-film magnetic head further includes an insulating layer positioned...

20050264947 - Cpp thin-film magnetic head having multilayered conductive layer behind the head and method for producing cpp thin-film magnetic head: A CPP thin-film magnetic head includes a bottom shield layer; a top shield layer, the bottom shield layer and the top shield layer being disposed at a predetermined interval; a thin-film magnetic head element between the bottom shield layer and the top shield layer; an insulating layer behind the thin-film...

20050264948 - Magnetic recording and reproducing head restraining a side reading: A magnetic recording head includes an upper shield layer, a lower shield layer, a magnetoresistive film interposed between the upper shield layer and the lower shield layer, and a pair of leads electrically coupled to the magnetoresistive film, in which a pair of side shield layers constituted by portions of...

20050264949 - 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...

20050264951 - Dual cpp gmr with synthetic free layer: A dual CPP GMR read head having a first pinned layer structure that is self pinned, and a second pinned layer structure that is AFM pinned. A synthetic free layer is sandwiched between the first and second pinned layer structures....

20050264952 - Magneto-resistive element, magnetic head and magnetic storage apparatus: A magneto-resistive element employs a CPP structure and includes an antiferromagnetic layer, a pinned magnetization layer, a nonmagnetic intermediate layer and a free magnetization layer that are successively stacked. The pinned magnetization layer includes a first pinned magnetization layer, a nonmagnetic coupling layer and a second pinned magnetization layer that...

20050264953 - Magneto-resistive element, magnetic head and megnetic storage apparatus: A magneto-resistive element employs a CPP structure and includes an antiferromagnetic layer, a pinned magnetization layer, a nonmagnetic intermediate layer and a free magnetization layer that are successively stacked. The pinned magnetization layer includes a first pinned magnetization layer, a nonmagnetic coupling layer and a second pinned magnetization layer that...

20050264950 - Read sensor having a self-pinned layer formed in both central and side regions for increased thermal stability: A magnetic head includes first and second shield layers and a read sensor formed between and in electrical contact with the first and second shield layers, where the read sensor is of the current-perpendicular-to-the-planes (CPP) type or tunnel valve type. The read sensor includes a free layer structure; an antiparallel...

20050264954 - Free layer for cpp gmr having iron rich nife: By using a free layer that includes a NiFe layer containing between 65 and 72 atomic percent iron, an improved CPP GMR device has been created. The resulting structure yields a higher CPP GMR ratio than prior art devices, while maintaining free layer softness and acceptable magnetostriction. A process for...

20050264957 - Hard biased materials for recording head applications: A hard bias layer that forms an abutting junction with a free layer in a GMR element and is comprised of FePtCu or FePtCuX where X is B, C, O, Si, or N is disclosed. The FePtCu layer has a composition of about 45 atomic % Fe, 45 atomic %...

20050264955 - Magnetic head having a layered hard bias layer exhibiting reduced noise: A magnetic head having an improved read head structure. The read head includes a free magnetic layer with hard bias elements disposed proximate its ends, where the hard bias elements include an improved hard bias magnetic grain structure. This is accomplished by fabricating the hard bias element as a bilayer...

20050264956 - Novel rie defined cpp read heads: A magnetoresistive sensor having a trackwidth defined by AFM biasing layers disposed beneath a free layer of the sensor....

20050264958 - Magnetoresistive medium including nanowires: A magnetoresistive medium (1) comprises a substrate (2) which has been treated to provide a miscut vicinal surface (3) in the form of terraces (4) and steps (5) of atomic and nanometer scale. There are discrete separated spacer nanowires (7) provided by an intermediate partial spacer film on each terrace...