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Air bearing slider detail

Subclass of:

360 - Dynamic magnetic information storage or retrieval

360230000 - FLUID BEARING HEAD SUPPORT

360234000 - Disk record

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
360235400 Air bearing surface detail 112
360234500 Electrical attachment of slider/head 22
360234600 Mechanical attachment of slider to its support 16
360235100 Slider material 10
360234700 Head attachment to slider 6
360234400 IC/circuit component on slider 2
20080204937Magnetic recording medium, manufacturing method thereof and magnetic recording apparatus using magnetic recording medium - This magnetic recording medium comprising at least a non-magnetic underlayer on a non-magnetic substrate, a first recording magnetic layer on the non-magnetic underlayer, a second recording magnetic layer on the first recording magnetic layer, and a third recording magnetic layer on the second recording magnetic layer. The first recording magnetic layer, the second recording magnetic layer and the third recording magnetic layer are made of a CoCrPtB alloy. The second recording magnetic layer has a smaller Cr content and a greater B content than the first recording magnetic layer, and the third recording magnetic layer has a smaller Cr content and a greater B content than the first recording magnetic layer and a smaller Pt content than the second recording magnetic layer. The magnetic recording medium according to the present invention can obtain high output medium characteristic with low noise and excellent written performance.08-28-2008
20100165511SLIDER WITH INTEGRATED WRITER AND SEMICONDUCTOR HETEROSTUCTURE READ SENSOR - A slider for magnetic data recording having a semiconductor based magnetoresistive sensor such as a Lorentz magnetoresistive sensor formed on an air bearing surface of the slider body. The slider is constructed of Si, which advantageously provides a needed physical robustness as well being compatible with the construction of a semiconductor based sensor thereon. A series of transition layers are provided between the surface of the Si slider body and the semiconductor based magnetoresistive sensor in order to provide a necessary grain structure for proper functioning of the sensor. The series of transition layers can be constructed of layers of SiGe each having a unique concentration of Ge.07-01-2010
Entries
DocumentTitleDate
20100157479SLIDER, STORAGE DEVICE HAVING THE SLIDER, AND METHOD OF MANUFACTURING SUSPENSION ASSEMBLY HAVING THE SLIDER, AND STORAGE DEVICE - According to one embodiment, a slider of a head includes is configured to fly from a surface of a disk. The slider includes a floating surface configured to oppose the surface of the disk, a positive pressure section in the floating, configured to produce floating force in conjunction with airflow formed by a rotation of the disk, and a first identifying section having a height identical to that of the positive pressure section in the floating surface and configured to identify a gravity center position of positive pressure force generated by the positive pressure section in the floating surface.06-24-2010
20090154021Perpendicular magnetic recording head - Embodiments of the present invention provide a magnetic head that can stably supply a perpendicular magnetic field component while generating high recording field strength from a main pole. According to one embodiment, a magnetic body is deposited in a trailing side of a pole tip of a main pole via a nonmagnetic layer, so that a second flare section is magnetically coupled with each sidewall.06-18-2009
20090154020Method of manufacturing magnetic head slider - A method of manufacturing a highly reliable magnetic head slider, with a simplified manufacturing process which provides reduction in manufacturing time and costs, is provided. The manufacturing method includes a multi-layer forming step for forming a magnetic head section in a multi-layered manner, the magnetic head section including a read element and/or a write element and a magnetic shield for magnetically shielding the read element and/or the write element, and the magnetic head slider is manufactured by being cut off from a multi-layered body having the magnetic head section. The manufacturing method further includes, after the multi-layer forming step, a shield end removing step for removing end portions in a width direction of the magnetic shield located on the flying surface side of the magnetic head slider.06-18-2009
20090154019PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH SLANTED MAGNETIC WRITE POLE - A perpendicular magnetic recording write head is formed on the trailing surface of a head carrier or slider that has an air-bearing surface (ABS) oriented generally parallel to the surface of the disk during operation of the disk drive. The write head has a slanted ferromagnetic write pole (WP) that forms an angle between about 5 and 20 degrees from a normal to the ABS. The slanted WP is formed over the generally planar surface of the ferromagnetic main pole and the slanted surface of a support layer located between the ABS and the recessed end of the main pole. A trailing shield (TS) has a slanted face that is generally parallel to and spaced from the slanted WP, with a nonmagnetic gap layer located between the slanted face of the TS and the slanted WP.06-18-2009
20130083430MULTIPLE-SENSE THERMO-RESISTIVE SENSOR FOR CONTACT DETECTION OF READ-WRITE HEADS - Techniques of the present invention include detecting a touchdown between a read/write head of a disk drive and a surface of a magnetic disk using multiple touchdown sensors located at an air-bearing surface (ABS). The multiple sensors increase the likelihood that a touchdown event—i.e., a portion of the ABS of the head contacting the underlying magnetic disk surface—will be detected. During touchdown, the portion of the head contacting the magnetic disk generates frictional heat which changes a characteristic (e.g., the electrical resistance) of at least one of the sensors located at the ABS. When the sensors are connected to a detection circuit, the changing characteristic may be monitored to identify a touchdown event. The touchdown sensors may be, for example, electrically connected in either series or parallel to the detection circuit. Thus, as long as the electrical resistance of one of the sensors is changed, a touchdown event may be detected.04-04-2013
20130083431DISK DRIVING APPARATUS HAVING IMPROVED QUALITY - A disk driving apparatus includes a base member, a hub member, and a fluid bearing unit. The base member has a head movement region on which a head unit is to be mounted such that a head portion of the head unit can be moved along the radial direction of a recording face in a reciprocating manner while facing the recording face of a recording disk to be mounted on the hub member, and a recessed housing portion housing the fluid bearing unit such that it surrounds at least a part of a rotor unit supported by the fluid bearing unit. Furthermore, the base member has an inhibiting wall at a boundary between the head movement region and the recessed housing portion so as to prevent a lubricant fluid from migrating toward the recording disk side.04-04-2013
20120218665Magnetic Head Suspension - The present invention provides a magnetic head suspension, wherein a supporting portion such as an arm or base plate includes a pair of supporting pieces extending from its opposite sides in the widthwise direction to a tip-end side of the suspension, and a concave portion which is defined by the pair of supporting pieces and is opened toward the tip-end side of the suspension, there is provided an elastically-deformable elastic plate which is connected to the pair of supporting pieces at a first end and a second end in the widthwise direction of the magnetic head suspension, the member forming the load beam portion is connected to the elastic plate, and the elastic plate forms the load bending portion.08-30-2012
20120218664Magnetic Head Suspension - The present invention provides a magnetic head suspension, wherein a supporting portion such as an arm or base plate includes a pair of supporting pieces extending from its opposite sides in the widthwise direction to a tip-end side of the suspension, and a concave portion which is defined by the pair of supporting pieces and is opened toward the tip-end side of the suspension, there is provided an elastically-deformable elastic plate which is connected to the pair of supporting pieces at a first end and a second end in the widthwise direction of the magnetic head suspension, the member forming the load beam portion is connected to the elastic plate, and the elastic plate forms the load bending portion.08-30-2012
20130057983MAGNETIC RECORDING HEAD WITH ADJACENT TRACK INTERFERENCE SUPPRESION BY NOVEL MICROWAVE-ASSISTED MAGNETIC RECORDING ELEMENT - A magnetic write head for magnetic data recording that incorporates a novel magnetic oscillation generator stricture that sets up a magnetic oscillation in the magnetic media for improving writing and that also narrows the write width and reduces adjacent track interference by suppressing writing in regions outside of the desired data track. The magnetic oscillation generating structure includes a centrally disposed magnetic assist element that generates an oscillating magnetic field that oscillates in a direction that will assist the write pole in writing to the magnetic medium. The magnetic oscillation generating structure also includes first and second magnetic non-assist elements at either side of the assist element. The non-assist elements generate a magnetic field that oscillates in a second direction that is opposite to the first direction, which counteracts the magnetic write assist from the centrally disposed magnetic assist element and acts to suppress writing in these side regions.03-07-2013
20130163120FLUID DYNAMIC BEARING UNIT AND ROTATING DEVICE - A rotating device includes a fluid dynamic bearing unit. The fluid dynamic bearing unit includes a shaft encircling member that encircles a shaft, an intermediate encircling member that encircles the shaft encircling member, a shaft holder formed with a shaft hole into which an end of the shaft is fitted to fix the shaft, a base-side encircling member fixed to the shaft holder and encircling the intermediate encircling member, and a ring member fixed to the intermediate encircling member and encircling a rod encircling member. A lubricant is present between a rotating body and a fixed body. A first air-liquid interface is present between the base-side encircling member and the intermediate encircling member, and a second air-liquid interface is present between the ring member and the rod encircling member.06-27-2013
20090237839CPP-TYPE MAGNETORESISTANCE EFFECT ELEMENT HAVING THREE MAGNETIC LAYERS - A magnetoresistance effect element comprises: a magnetoresistive stack including: first, second and third magnetic layers whose magnetization directions change in accordance with an external magnetic field, said second magnetic layer being located between said first magnetic layer and the third magnetic layer; a first non-magnetic intermediate layer sandwiched between said first and second magnetic layers, said first non-magnetic intermediate layer allowing said first magnetic layer and said second magnetic layer to be exchange-coupled such that the magnetization directions thereof are anti-parallel to each other when no magnetic field is applied; and a second non-magnetic intermediate layer sandwiched between said second and third magnetic layers, said second non-magnetic intermediate layer producing a magnetoresistance effect between said second magnetic layer and said third magnetic layer; wherein sense current is adapted to flow in a direction perpendicular to a film plane; a bias magnetic layer provided on an opposite side of said magnetoresistive stack from an air bearing surface, said bias magnetic layer applying a bias magnetic field to said magnetoresistive stack in a direction perpendicular to the air bearing surface.09-24-2009
20090231759HEAD SLIDER, HEAD ASSEMBLY AND INFORMATION STORAGE DEVICE - A head slider body includes a main body having a protruding air bearing surface, and a wall portion protruding from the air bearing surface near one end in one axial direction of the main body. Extending in the other axial direction in the air bearing surface, a groove portion extends between the wall portion and the air bearing surface in the main body. A read/write head is provided near the other end in the one axial direction of the head slider body.09-17-2009
20090231758HEAD SUSPENSION UNIT AND HEAD SUSPENSION ASSEMBLY - A groove is formed on the surface of a base plate in a head suspension unit. A flexure extends from a load beam and received in the groove of the base plate. The flexure is thus allowed to extend outward from the contour of the base plate at a position closest to the rear end of the base plate. The area of the flexure is significantly reduced outside the contour of the base plate as compared with the case where the flexure extends outward from the contour of the base plate at a position closer to the front end of the base plate. Vibration of the flexure is suppressed. Even when a jig is urged against the base plate, the flexure is reliably prevented from being damaged. Simultaneously, a sufficiently large contact area is ensured between the base plate and the jig.09-17-2009
20090052084SLIDER WITH CONTACT FEATURES INITIATED AT WAFER LEVEL - A method is disclosed for producing sliders with protective contacts features the fabrication of which is initiated at the wafer level. Recesses are formed in the wafer, a protective material is provided in the recesses, and the wafer is sliced along the recesses and diced into sliders, such that the protective material forms corners of the sliders. The protective material may be disposed such that it has a low elastic modulus at the corners, and a higher elastic modulus at a displacement from the corners which is still lower than the elastic modulus of the slider body, thereby providing superior protection for potential contacts between the slider and an adjacent media surface.02-26-2009
20090046388HEAD SLIDER HAVING LUBRICANT LAYER ON ITS FLOATING SURFACE - A head slider that includes a slider body having a air bearing surface, a magnetic head provided on the slider body, and a lubricant layer disposed on the air bearing surface, the lubricant layer being composed of a fluorocarbon resin.02-19-2009
20100202086STORAGE DEVICE AND DESIGN METHOD THEREOF - According to one embodiment, a storage device includes a spindle assembly including a spindle motor configured to rotate a disk, and a clamp ring configured to fix the disk to the spindle motor, and a slider with a head configured to read/write data on/from the disk, and configured to fly over a surface of the rotating disk. The slider includes a trailing edge on a floating surface of the slider opposed to the disk, and the trailing edge is an end part through which an airflow exits. The spindle assembly and the slider are configured to satisfy a relationship of 0.95f≦F≦1.05f at a temperature of 23° C., where f is an anti-resonance frequency of the trailing edge, and F is a resonance frequency of the spindle assembly.08-12-2010
20110299195Row bar and wafer - A row bar having a plurality of slider forming areas collocated and slider cutting areas formed between two adjacent slider forming areas respectively, the slider forming areas are eventually cut into individual sliders along the slider cutting areas respectively, each slider having a pole tip embedded therein and an air bearing surface pattern on an air bearing surface facing to a disk, and at least a regular measuring pattern with straight line is formed on one of the slider cutting areas, to serve as a frame of reference for measuring the position of the pole tip and the air bearing surface pattern. The present invention can improve the measuring accuracy, decrease the measuring error and, in turn, improve the performance of the slider.12-08-2011
20110007421MAGNETORESISTIVE EFFECT ELEMENT IN CPP-TYPE STRUCTURE AND MAGNETIC DISK DEVICE - An MR element in a CPP-GMR structure includes a first ferromagnetic layer, a spacer layer that is epitaxially formed on the first ferromagnetic layer, a second ferromagnetic layer that is located on the spacer layer, and that is laminated with the first ferromagnetic layer to sandwich the spacer layer. A sense current flows along a lamination direction of the first and second ferromagnetic layers. Angle of magnetization directions of the first ferromagnetic layer and the second ferromagnetic layer relatively change due to an externally applied magnetic field.01-13-2011
20090310257HEAD SLIDER AND MAGNETIC STORAGE DEVICE WITH HEAD SLIDER - A head slider includes a slider that is disposed at a tip of a supporting member, floats with an air flow occurring due to rotation of a storage medium, and has a medium facing surface onto which a water-repellent material is applied, with an area near the magnetic head being exposed; and a magnetic head that is disposed at an air outflow end side of the slider and has a recording element and a reproducing element.12-17-2009
20110194208SLIDER, HEAD GIMBAL ASSEMBLY AND DISK DRIVE UNIT WITH THE SAME - A slider for a head gimbal assembly includes a trailing surface, a plurality of connection pads arranged on the trailing surface adapted for both bonding the slider to a suspension of the head gimbal assembly and testing the performance of the slider. At least a part of the connection pads each comprises a bonding portion and a testing portion electrically connected to the bonding portion and larger than the bonding portion, all the bonding portions and the rest part of the connection pads are arranged in a first row and the testing portions are arranged outside the first row. The slier of the present invention has a new pad layout to facilitate bonding of the connection pads and permit to provide additional pads thereon to connect the additional sensors therein for precise reading and writing, thereby improving the performance of the slider. The invention also discloses a head gimbal assembly and a disk drive unit including the same.08-11-2011
20090262459SLIDER OF A HARD DISK DRIVE AND HARD DISK DRIVE HAVING THE SAME - A slider of a hard disk drive can include a slider main body on which a read/write head is mounted, the read/write head configured to write data to a disk and to read data from the disk by being lifted a predetermined height from a surface of the disk by a lift force when the disk is rotating, and a lift force generation unit provided in an area of the slider main body proximate to the read/write head to improve the lift force of the slider main body with respect to the disk.10-22-2009
20090262458ABS design for dynamic flying height (DFH) applications - A DFH (Dynamic Flying Height) type slider ABS design has significantly improved DFH efficiency and a decreased sensitivity of flying height to both ambient conditions and disk surface variations. This is a result of embedding the read/write head and heater in a micro-pad having a very small surface area. The micro-pad is surrounded by a wing-like structure that projects from a central rail in the ABS. The micro-pad is separated from the central rail by a surrounding trench whose depth can be varied to tune the DFH efficiency. The small surface area of the micro-pad reduces the air pressure at the read/write head and the projecting wings and adjacent topology help to direct the airflow around the micro-pad.10-22-2009
20100103560HEAD SLIDER - According to one embodiment, a head slider includes a slider main body, an element embedded film, a head element, and a plurality of recesses. The head element is embedded in the element embedded film. The recesses are distributed in a predetermined area formed on the trailing end surface of the element embedded film.04-29-2010
20080239571Integrated silicon micro-actuator slider - An integrated microactuator slider. The microactuator includes a substrate having a fixed portion and a moveable portion. The microactuator also includes a slider communicatively integrated within the moveable portion of the substrate. The slider includes a read/write head for reading data from or writing data to a data storage device. The microactuator further includes a force generator communicatively integrated within the substrate. The force generator is for causing movement of the moveable portion of the substrate.10-02-2008
20100128394TOP BOND PAD BIAS AND VARIATION CONTROL - An assembly includes a slider and a suspension assembly. The slider includes an air bearing surface and a slider mounting surface opposite the air bearing surface. There are a plurality of slider pads on the slider mounting surface. The suspension assembly includes a plurality of suspension pads on a suspension mounting surface. Each of the suspension pads is connected to one of the slider pads with a solder joint so that the slider mounting surface has at least one of a pitch, roll, or yaw angle with respect to the suspension mounting.05-27-2010
20080231993Head slider having light emission device and optical absorption, method for controlling flying height thereof, and controlling circuit thereof - The present invention relates to a head slider used for a magnetic storage device. The head slider includes a light emission device, and an optical absorption device disposed at a position capable of absorbing energy of light emitted by the light emission device.09-25-2008
20080273265Determining smear of a hard disk drive slider - A disk drive head slider for a magnetic disk drive is provided. The head slider includes a tunnel magnetic resistance device for reading data on a magnetic disk and a dedicated sensor for measuring resistance wherein the resistance corresponds to a level of smear associated with the head slider.11-06-2008
20100265618Method and Apparatus for Reducing Head Media Spacing in a Disk Drive - Systems and methods for reducing head media spacing (HMS) from about 100 Angstroms to about 65 Angstroms or less, without substantial reductions in the carbon overcoat or lubricant thickness. A protruding feature extends above the actuated portion of the air bearing surface and generally covers the read-write sensors. The protruding feature can either be static or thermally actuated. The protruding feature is small enough to engage with the lubricant without causing large head media disturbances and lubricant pickup and re-distribution or preventing contact detection. The protruding feature is also extremely small relative to the size of the actuated portion of the air bearing surface, but large enough to provide a wear and corrosion resistance to head media spacing sensitive features.10-21-2010
20110007420MAGNETORESISTIVE EFFECT ELEMENT IN CPP-TYPE STRUCTURE AND MAGNETIC DISK DEVICE - An MR element in a CPP structure includes a spacer layer made of Cu, a magnetic pinned layer containing CoFe and a free layer containing CoFe that are laminated to sandwich the spacer layer. The free layer is located below the magnetic pinned layer. The free layer is oriented in a (001) crystal plane, the spacer layer is formed and oriented in a (001) crystal plane on the (001) crystal plane of the free layer. Therefore, in a low resistance area where an area resistivity (AR) of the MR element is, for example, lower than 0.3 Ω·μm01-13-2011
20090052086METHOD OF MAKING HEAD SLIDER AND RESULTANT HEAD SLIDER - A laser beam is radiated to the corner of the back surface of the head slider having the front surface defining a medium-opposed surface. This method employs a laser beam radiated to the corner of the back surface of the head slider. The material thus gets molten at least partly at the corner of the head slider. The molten material then gets cured or hardened. The corner of the head slider warps back. The corner of the medium-opposed surface is in this manner chamfered. The shape of the chamfer can clearly be observed. Such chamfering process can be repeated until a desired shape is obtained. In this manner, the head slider can readily be chamfered with a high accuracy.02-26-2009
20090052085STORAGE APPARATUS AND HEAD SUSPENSION ASSEMBLY - A head slider has a medium-opposed surface opposed to a storage medium at a distance in a storage apparatus. The medium-opposed surface receives airflow through relative movement between the storage medium and the head slider. The flexure holds the head slider at a predetermined mounting area. The head slider flies above the storage medium in a pitched attitude. A predetermined pitch angle is established in the pitched attitude. An actuator serves to deform the flexure outside the mounting area for the head slider so as to forcefully change the pitched attitude within a predetermined range of a pitch angle. A change in the pitched attitude, namely a change in the pitch angle results in a change in the flying height of the head slider. The flying height can be changed without changing the design of the head slider.02-26-2009
20130182352RECORDING HEAD, AND DISK DRIVE WITH THE SAME - According to one embodiment, a recording head includes a main pole formed of a soft magnetic material, a write shield pole formed of a soft magnetic material and on a trailing side of the main pole with a write gap, and side shields on both sides of the main pole in a track width direction and including nonmagnetic cavities formed of a nonmagnetic material in inner portions of the side shields. The side shields includes surfaces formed of a soft magnetic material and configured to be between a distal end portion of the main pole and the nonmagnetic cavity and between the recording medium and the nonmagnetic cavity.07-18-2013
20090009910METHOD OF ALIGNING COMPONENTS FOR INSTALLATION ON A HEAD SUSPENSION ASSEMBLY - A head suspension for supporting a head slider over a storage media in a dynamic storage device is provided with a head suspension component having a spring metal layer, an electrically conductive layer and a dielectric layer interposed between the metal layer and the electrically conductive layer. A plurality of electrically conductive traces with bond pads are formed in the electrically conductive layer. A feature datum is also formed in the electrically conductive layer on a detachable carrier strip. The feature datum defines a first edge in the electrically conductive layer parallel to an edge of the bond pads.01-08-2009
20090244780Magnetic Recording Medium and Recording/Reproducing Apparatus Therefor - A magnetic recording medium on which a plurality of concentric recording tracks is formed, the recording tracks including a plurality of closed shaped magnetic parts formed to be symmetrical with respect to two orthogonal axes in shape, the magnetic recording medium being rotated by a recording and reproducing apparatus provided with a slider including a recording and reproducing head to record or reproduce a magnetic recording, wherein when the recording and reproducing head which is moved with movement of a slider to record data on or reproduce data from the recording tracks is inclined by a predetermined angle with respect to a tangent line of concentric circles of the recording tracks, the slider moving in a radial direction of the concentric circles of the recording tracks, one of the two orthogonal axes of the magnetic parts is perpendicular to the recording and reproducing head.10-01-2009
20090237840STORAGE MEDIUM DRIVING APPARATUS AND CONTROL METHOD THEREOF - A storage medium driving apparatus includes a head slider opposed to a storage medium, an acceleration detector detecting an acceleration of the apparatus. A control circuit retracts the head slider from above the storage medium according to a result detected by the acceleration detector and selectively executes one or more operations from among a plurality kinds of operations according to an index that is derived from the result detected by the acceleration detector and represents an amount of an impact energy.09-24-2009
20090279208SLIDER, INTEGRATED SLIDER, AND HYBRID STORAGE DEVICE - An opening (11-12-2009
20100177441Thin film magnetic head and method of manufacturing the same - A thin film magnetic head has a magneto-resistive (MR) effect element including an MR effect film formed by sequentially layering a magnetic pinned layer, a nonmagnetic layer and a free layer, and a pair of bias magnetic field application layers formed at junction tapered parts formed on both end parts of the magneto-resistive effect film in the width direction via insulating layers. Further, magnetic pinned layer oxidized films whose thickness is Hx (unit: nm) are disposed on end parts of the magnetic pinned layer at the junction tapered parts, free layer oxidized films whose thickness is Hf (unit: nm) are disposed on end parts of the free layer at the junction tapered parts, and the oxidized films are configured such that the thickness ratio (Hx/Hf) is not more than 0.5. With this configuration, the bias magnetic filed application layers effectively apply a vertical bias magnetic filed to the free layer, resulting in that the thin film magnetic head is realized having a large MR ratio, a small deviation σ of MR waveform asymmetry, and excellent reliability.07-15-2010
20100177440Thin film magnetic head and magnetic disk device - Foundation layers of a thin film magnetic head are disposed between insulating layers and bias magnetic field application layers, and are configured of Cr or Cr alloy. The insulating layers are configured of a Si oxide such that the Si content of the Si oxide is in the range of 30˜56 at % (atom %) and that the atom ratio of oxygen to Si (O/Si) is in the range of 0.8˜1.3. With the configuration, the occurrence rate of noise is reduced.07-15-2010
20100002340HEAD, HEAD SUSPENSION ASSEMBLY, AND DISK DRIVE DEVICE PROVIDED WITH THE SAME - According to an embodiment, a slider of a head includes a negative-pressure cavity defined by a recess formed in a disk-facing surface, a leading step portion which is situated on an upstream side of the negative-pressure cavity with respect to an airflow and projects from a bottom surface of the negative-pressure cavity, a trailing step portion which is provided on an outflow-side end portion of the facing surface on the downstream side of the negative-pressure cavity with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and constitutes a part of the facing surface, and a maximum-positive-pressure producing step portion which is spaced upstream from the trailing step portion with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and produces a maximum positive pressure. A head portion is provided on the trailing step portion.01-07-2010
20100002339HEAD SLIDER, MAGNETIC STORAGE APPARATUS AND METHOD OF FABRICATING HEAD SLIDER - A head slider includes a medium opposing surface configured to oppose a recording surface of a magnetic recording medium, a head element provided on the medium opposing surface, and an outlet end surface provided on a downstream side of the head element in a direction in which the magnetic recording medium moves relative to the head element, and extending substantially in a perpendicular direction from the medium opposing surface. The outlet end surface has a surface free energy greater than a surface free energy of the medium opposing surface.01-07-2010
20100265619MAGNETIC STORAGE MEDIUM AND MAGNETIC STORAGE DEVICE - According to an embodiment, a magnetic storage medium includes a data area in and from which a magnetic head on a magnetic head slider records and reproduces data, the data area including an innermost peripheral radius Rid [m] and an outermost peripheral radius Rod [m]. If a rotational speed during recording and reproduction of the data is RPS [rps], waviness of the storage medium with a wavelength in a range between λ10-21-2010
20100149690MAGNETIC HEAD, METHOD OF MANUFACTURING MAGNETIC HEAD, ACTUATOR, AND MAGNETIC DISK DEVICE - According to one embodiment, a magnetic head includes a write element, a first insulating member, and a second insulating member. The first insulating member is made of an insulating material with high rigidity. The first insulating member is formed around the write element as a surface layer of the floating surface. The second insulating member is made of an insulating material with lower rigidity than the first insulating member. The second insulating member is formed near the first insulating member around the write element beneath the surface layer of the floating surface. The first insulating member is polished on the floating surface. A portion of the floating surface where the second insulating member is arranged protrudes more than a portion of the floating surface around the write element.06-17-2010
20100226043Bearing device and information recording and reproducing apparatus - Provided is a bearing device (09-09-2010
20100226044HEAD SLIDER AND STORAGE MEDIUM DRIVING DEVICE - According to one embodiment, a head slider, includes: a slider main body; an insulating nonmagnetic film laminated on an end surface of the slider main body at an air outflow side; a head element embedded in the nonmagnetic film; a heater embedded in the nonmagnetic film in association with the head element; a conductive terminal formed on an end surface of the nonmagnetic film at the air outflow side; a conductive pattern configured to electrically connect the heater and the conductive terminal with each other; and a radiator configured to contact the conductive pattern and dissipate heat transmitted from the conductive pattern.09-09-2010
20110058278HIGH STROKE EFFICIENCY AIR-BEARING DESIGN - This disclosure is directed to air-bearing sliders used in magnetic storage systems that employ a trench arranged between a transducing head connected to a slider body and a leading edge of the slider body. The trench is configured to divert air passing over an air-bearing surface of the slider body away from the transducing head.03-10-2011
20100149689Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layer including amorphous layer - A thin film magnetic head includes a magnetoresistance (MR) layered body that has first and second magnetic layers whose magnetization direction are changed according to an external magnetic field, a nonmagnetic middle layer and where the first magnetic layer, the nonmagnetic middle layer and the second magnetic layer are disposed in a manner of facing each other in respective order, first and second shield layers that are disposed in a manner of sandwiching the MR-stack in the film surface orthogonal direction of the MR-stack facing the first magnetic layer and the second magnetic layer, respectively, and that also serve as an electrode for applying a sense current to the film surface orthogonal direction of the MR-stack; and a bias magnetic field application means that is disposed on an opposite surface of an air bearing surface (ABS) of the MR-stack, and that applies a bias magnetic field to the MR-stack in the direction orthogonal to the ABS. The first shield layer has a first exchange coupling magnetic field (ECMF) application layer that is disposed in a manner of facing the first magnetic layer, and that transmits to the first magnetic layer an exchange coupling magnetic field in the direction in parallel with the ABS, and that includes an amorphous layer, and has a first antiferromagnetic layer that is disposed on a rear surface of the first ECMF application layer viewed from the first magnetic layer in a manner of facing the first ECMF application layer, and that is exchange-coupled with the first ECMF application layer. The second shield layer has a second exchange coupling magnetic field (ECMF) application layer that is disposed in a manner of facing the second magnetic layer, and that transmits to the second magnetic layer the exchange coupling magnetic field in a direction in parallel with the ABS; and a second antiferromagnetic layer that is disposed on a rear surface of the second ECMF application layer viewed from the second magnetic layer, and that is exchange-coupled with the second ECMF application layer.06-17-2010
20100118442HEAD-SLIDER WITH PROTRUSION CONTROL STRUCTURE AND MANUFACTURING METHOD OF THE HEAD-SLIDER WITH PROTRUSION CONTROL STRUCTURE - A head-slider. The head-slider includes a slider and a magnetic-recording head formed on the slider. The magnetic-recording head includes a main pole, a return pole to which a recording magnetic field from the main pole returns, a sensor element, a shield provided between the sensor element and the main pole, and a heater element for adjusting a shape of a flying surface of the magnetic-recording head. The magnetic-recording head further includes a first recess provided at a tip end face of at least one element selected from the group consisting of the return pole and the shield, and a second recess provided on an exposed flying surface and corresponding to the first recess.05-13-2010
20090116149Magnetic head slider manufacturing method - To provide a manufacturing method which can adjust the lengths of a recording element and a reproducing element for enabling manufacture of high-quality magnetic head sliders. The manufacturing method comprises: a stacked-layer forming step which stacks magnetic heads on a substrate; a lapping step which cuts out a bar block having a plurality of connected magnetic head sliders, and polishes a flying surface; and a slider cutting step which cuts out individual magnetic head sliders from the bar block. The stacked-layer forming step forms a reproducing-element polish amount detecting sensor on a same layer as that of the reproducing element, and forms a recording-element polish amount detecting sensor on a same layer as that of the recording element. The lapping step carries out polishing based on each output value of the reproducing-element polish amount detecting sensor and the recording-element polish amount detecting sensor.05-07-2009
20090244779STORAGE APPARATUS - A storage apparatus includes a magnetic storage medium which is formed with a data portion based on isolated magnetic dots and a servo pattern portion, a drive mechanism which drives the storage medium, a head actuator which includes a head for reading and writing data from and to the storage medium, and a permanent magnet which is disposed at a position that is opposable to a whole radial region of the servo pattern portion, during a rotation of the storage medium.10-01-2009
20090040659Disk drive device and method for removing adhesion on a head - Embodiments of the present invention help to effectively remove adhesion on a head slider. In an embodiment of the present invention, a hard disk controller/multiprocessing unit (HDC/MPU) raises the temperature on the surface of a head slider with a heating element on the head slider to remove adhesion on the head slider while an actuator stays on a ramp. The HDC/MPU varies the amount of heat in accordance with the temperature sensed by a temperature sensor. This achieves removal of the adhesion on the head slider, maintaining reliability.02-12-2009
20100321828METHOD AND APPARATUS FOR ACTIVE CONTROL OF SPACING BETWEEN A HEAD AND A STORAGE MEDIUM - A slider having a slider body is provided. An electrical connection is coupled to the slider body. A first actuator is coupled to the electrical connection and adapted to displace a first portion of the slider body. Additionally, a second actuator is coupled to the electrical connection and adapted to displace a second portion of the slider body.12-23-2010
20090067093Perpendicular Magnetic Recording Medium and Magnetic Recording Apparatus - A discrete track medium and a bit patterned medium with a high SNR are manufactured at low cost. A seed layer and a recoding layer are formed on a bottom surface and a side wall of a groove portion, which is formed between non-magnetic projected structures artificially patterned. Then, the recording layer on the projected portion is removed.03-12-2009
20120243123MAGNETIC DISK DEVICE, MAGNETIC DISK, AND MAGNETIC DISK MANUFACTURING METHOD - A magnetic disk is provided wherein a non-magnetic substrate, a magnetic layer, a protection layer, and a lubrication layer are sequentially stacked. The surface of the lubrication layer has irregular structure patterns along a circumferential direction of the magnetic disk that have circumferential lengths that each correspond to a central angle. The irregular structure patterns may be formed by an adsorption between the lubrication layer and the surface of the protection layer. When a natural frequency of a magnetic head slider used to record to the magnetic disk is f and the magnetic disk rotation speed is R09-27-2012
20090073610Magnetic head slider and magnetic disk drive - Embodiments of the present invention provide a magnetic head slider having a surface that is formed into a multiple step configuration to stabilize flying of the slider. According to one embodiment, a magnetic head slider has an air bearing surface including surfaces in three stages different in height from one another. An outflow side rail surface and inflow side rail surfaces, in a first stage are approximately the same in height. A rear step bearing surface, front step bearing surface, and side step bearing surfaces and, which are in a second stage, are shallow step surfaces being approximately the same in height, and being formed lower than the surfaces in the first stage. A deep cavity surface is formed further lower than the surfaces in the second stage. A film for preventing adhesion of organic contaminants and a lubricant is formed on the shallow step surfaces, and in the second stage.03-19-2009
20110069413CURRENT-PERPENDICULAR-TO-THE-PLANE (CPP) MAGNETORESISTIVE READ HEAD WITH MULTIPLE SENSING ELEMENTS FOR PATTERNED-MEDIA - A magnetoresistive (MR) sensor or read head for a magnetic recording disk drive has multiple independent current-perpendicular-to-the-plane (CPP) MR sensing elements. The sensing elements are spaced-apart in the cross-track direction and separated by an insulating separation region so as to be capable of reading data from multiple data tracks on the disk. The sensing elements have independent CPP sense currents, each of which is directed to independent data detection electronics, respectively. Each sensing element comprises a stack of layers formed on a common electrically conducting base layer, which may be a bottom magnetic shield layer formed of electrically conducting magnetically permeable material. Each sensing element has a top electrical lead layer. A top magnetic shield layer is located above the sensing elements in contact with the top lead layers. The top shield layer is formed of soft magnetically permeable material, but is electrically insulating, so that the independent sense currents can be passed to the independent sensing elements.03-24-2011
20090021864Method and apparatus for dynamically adjusting the ramp speed for loading and/or unloading sliders in a hard disk drive - A Load-UnLoad (LUL) hard disk drive rotating its disks with ramp speeds when loading and/or unloading its sliders from its ramp based upon at least one atmospheric condition (AC) within the hard disk drive. Embodiments include load and unload ramp speeds that differ for a single AC, load ramp speeds that differ for differing AC, and/or unload ramp speeds that differ for differing AC. Also a method of operating such hard disk drive and its implementation within an embedded circuit.01-22-2009
20100321827SLIDER WITH STABILIZING CONTACT FINGER - A slider includes a slider body having an air bearing surface, a first contact finger, and a transducing head. The first contact finger extends from the slider body and has a contact surface area of between about 2 square microns to about 20 square microns. The transducing head is supported by the slider body near the first contact finger and extends from the air bearing surface by a distance less than that of the first contact finger.12-23-2010
20080204936Slider air bearing with asymetric side rail - A head slider for a magnetic disk drive is provided. The head slider includes a leading edge, a trailing edge, an inner diameter side and an outer diameter side of an air bearing surface. The head slider further includes a first recess on the air bearing surface of the head slider, the first recess defining a first rail proximate the inner diameter side and a second rail proximate the outer diameter side wherein the first rail and the second rail are higher with respect to the recess and are asymmetrical with respect to each other.08-28-2008
20080253024MAGNETIC HEAD AND MANUFACTURING METHOD THEREOF - A recording element supported by a slider includes a non-magnetic film and a magnetic pole film. The non-magnetic film has a depression whose inner surface is provided with an amorphous electrode film used as a plating seed film. Above the electrode film, the magnetic pole film is grown by plating. The magnetic pole film may be either an electroplated film grown on the electrode film to have a maximum crystal grain size of 20 nm or less or an electroless plated film. This decreases coercive force of the magnetic pole film.10-16-2008
20090316304Magnetic head assembly and magnetic recording apparatus - A magnetic head assembly includes a magnetic recording head, a main magnetic pole, a head slider, a suspension and an actuator arm. The magnetic recording head includes a main magnetic pole having an air bearing surface facing a magnetic recording medium; and a stacked structure having, a first magnetic layer, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. A stacked plane of the stacked structure is inclined with respect to the air bearing surface. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to the other end of the suspension.12-24-2009
20090316303Magnetic head assembly - A magnetic head assembly includes: a magnetic recording head, a head slider, a suspension and an actuator arm. The magnetic recording head includes a spin torque oscillator and a main magnetic pole. The spin torque oscillator includes, a first magnetic layer including at least one selected from the group consisting of a Fe—Co—Al alloy, a Fe—Co—Si alloy, a Fe—Co—Ge alloy, a Fe—Co—Mn alloy a Fe—Co—Cr alloy and a Fe—Co—B alloy, a second magnetic layer, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The main magnetic pole is placed together with the spin torque oscillator. The magnetic recording head is mounted on the head slider. The head slider is mounted on one end of the suspension. The actuator arm is connected to other end of the suspension.12-24-2009
20110051288PERPENDICULAR MAGNETIC RECORDING SYSTEM AND WRITE HEAD WITH TRANSVERSE AUXILIARY POLE FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION - A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pole (TAP) that injects auxiliary magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The additional flux from the TAP, which is injected non-parallel to the primary magnetization of the write pole, exerts a torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. The TAP is coupled to the main coil but not electrically connected to it. A separate passive coil, not electrically connected to the main coil, may be wrapped as a loop around the main pole and the TAP. Alternatively, the TAP may be located near one of the electrically conductive turns of the main coil.03-03-2011
20120206835Magnetic Head Suspension - In a magnetic head suspension according to the present invention, each of paired right and left connecting beams that are positioned on both sides of an open section, with which paired piezoelectric elements are at least partially overlapped in a plan view, in a suspension width direction and connect a proximal end section that is directly or indirectly connected to a main actuator and a distal end section to which the load bending part is connected includes proximal-side and distal-side beams. The distal-side beam is inclined with respect to the proximal-side beam in a plan view such that a connection point between the proximal-side and distal-side beams is located closer to a suspension longitudinal center line relative to a virtual line connecting the proximal end of the proximal-side beam and the distal end of the distal-side beam.08-16-2012
20120063033MAGNETIC FIELD SENSOR WITH GRAPHENE SENSE LAYER AND FERROMAGNETIC BIASING LAYER BELOW THE SENSE LAYER - A graphene magnetic field sensor has a ferromagnetic biasing layer located beneath and in close proximity to the graphene sense layer. The sensor includes a suitable substrate, the ferromagnetic biasing layer, the graphene sense layer, and an electrically insulating underlayer between the ferromagnetic biasing layer and the graphene sense layer. The underlayer may be a hexagonal boron-nitride (h-BN) layer, and the sensor may include a seed layer to facilitate the growth of the h-BN underlayer. The ferromagnetic biasing layer has perpendicular magnetic anisotropy with its magnetic moment oriented substantially perpendicular to the plane of the layer. The graphene magnetic field sensor based on the extraordinary magnetoresistance (EMR) effect may function as the magnetoresistive read head in a magnetic recording disk drive.03-15-2012
20120162823RECORDING HEAD AND DISK DRIVE WITH THE SAME - According to one embodiment, a recording head for perpendicular recording, includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a return pole opposed to the main pole with a write gap therebetween and configured to form a magnetic circuit in conjunction with the main pole, a junction formed of a nonmagnetic body in which soft magnetic bodies are dispersed and configured to physically connect the main and return poles to each other, a coil configured to excite the magnetic flux in the magnetic circuit, a spin-torque oscillator arranged between the return pole and an end portion of the main pole and configured to produce a high-frequency magnetic field, and a current source configured to supply a current to the spin-torque oscillator through the return and main poles.06-28-2012
20120134054MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING APPARATUS - According to one embodiment, a magnetic recording head includes a main magnetic pole generating a recording magnetic field in a magnetic recording medium, a return yoke paired with the main magnetic pole and a spin torque oscillator interposed between the main magnetic pole and the return yoke and including a first magnetic layer, a second magnetic layer and a third magnetic layer of Fe05-31-2012
20100053815GLIDE HEAD AND MAGNETIC STORAGE DEVICE - A glide head includes a slider configured to float by airflow generated by rotation of a recording medium and detects a contact between the recording medium and the slider. The slider includes a floating rail. The floating rail includes a surface facing the recording medium and including an obtuse-angled corner. The floating rail is configured such that a rear end thereof is formed into a wedge shape and a thickness thereof is maximized at the obtuse-angled corner.03-04-2010
20090316302MAGNETIC HEAD AND MAGNETIC DISK UNIT - A magnetic head includes: a slider which floats above a recording medium by air flow generated by rotation of the recording medium; and an element forming section fixed to an air outflow side of the slider and formed with an element which accesses the recording medium. The element forming section includes: a recording element having a main magnetic pole which records data in the recording medium; and a reproducing element which is formed closer to the slider than the recording element and which reproduces data recorded in the recording medium. The element forming section further includes: a heat insulation layer formed between the main magnetic pole and the reproducing element; and a heater formed closer to the slider than the heat insulation layer.12-24-2009
20120224280Magnetic Head Suspension - The present invention provides a magnetic head suspension, wherein a supporting portion such as an arm or base plate includes a pair of supporting pieces extending from its opposite sides in the widthwise direction to a tip-end side of the suspension, and a concave portion which is defined by the pair of supporting pieces and is opened toward the tip-end side of the suspension, there is provided an elastically-deformable elastic plate which is connected to the pair of supporting pieces at a first end and a second end in the widthwise direction of the magnetic head suspension, the member forming the load beam portion is connected to the elastic plate, and the elastic plate forms the load bending portion.09-06-2012
20120257306SLIDER TESTER AND METHOD FOR TESTING SLIDER - A slider tester includes a disk, movable table, table drive mechanism, guide member, etc. A plurality of suspensions are mounted on the movable table. A slider is mounted on each suspension. A guide member can support respective lift tabs of the suspensions. The guide member includes a first guide surface, second guide surface, and opening arranged in a track width direction of the disk. When any of the lift tabs gets into the opening as the movable table moves in the track width direction of the disk, the slider is dropped toward a recording surface of the disk.10-11-2012
20100232067MEDIA CERTIFICATION DEVICE DESIGN - A glide head with a slider body that has a leading edge, a trailing edge and an air bearing surface is disclosed. The glide head also has an array of thermal proximity sensing elements connected in a bridge circuit that are adjacent both the trailing edge and the air bearing surface, a heating element mounted to the glide body for elevating the temperature of the thermal proximity sensing elements in relation to the temperature of an inspected surface, and a controller coupled to the array of thermal proximity sensing elements. The controller receives signals from the thermal proximity sensing elements, and determines the existence of a surface variation in the inspected surface based upon differences in the signals received from the thermal proximity sensing elements.09-16-2010
20100232066Magneto-resistive effect element provided with GaN spacer layer - A magneto-resistive effect (MR) element includes a first magnetic layer and a second magnetic layer in which a relative angle of magnetization directions of the first and second magnetic layers changes according to an external magnetic field; and a spacer layer that is provided between the first magnetic layer and the second magnetic layer. The spacer layer contains gallium nitride (GaN) as a main component. A thin film magnetic head according to one embodiment of the present invention is provided with the following structures: an MR element mentioned above that has a first magnetic layer and a second magnetic layer, as free layers, in which the magnetization direction in the two layers changes according to the external magnetic field; a bias magnetic field application layer that applies a bias magnetic field to the first and second magnetic layers in an orthogonal direction to an air bearing surface (ABS); the bias magnetic field application layer is formed in a rear side of the MR element seen from the ABS; and a sense current flows in an orthogonal direction to a layer surface of the MR element.09-16-2010
20120287536HEAD SUPPORT MECHANISM - A head support mechanism includes a slider on which a head element is mounted is arranged at a tip end part of a load beam. The head support mechanism includes a support projection arranged at the tip end part of the load beam, a gimbal part including the slider and arranged to support the slider in a revolvable manner around the support projection, a displacement member arranged to revolve the slider around the support projection, and a counter balance aligned along a symmetric axis of the gimbal part so as to align a centroid of the gimbal part including the slider with the support projection.11-15-2012
20100091404MAGNETIC READ/WRITE HEAD SUBSTRATE - A substrate for a magnetic read/write head is disclosed. The substrate can reduce detachment of crystal grains when the substrate is machined. The substrate may be machined when the substrate is cut into strips or a flow path surface recess is formed to produce the magnetic read/write head. The reduced detachment of crystal grains makes the magnetic read/write head more resilient to chipping, which allows the magnetic read/write head to have a lower and more stable flying height that increases recording density.04-15-2010
20130094108MAGNETIC SENSOR HAVING CoFeBTa IN PINNED AND FREE LAYER STRUCTURES - A magnetic read sensor having improved magnetic performance and robustness. The magnetic sensor includes a magnetic free layer and a magnetic pinned layer structure. The magnetic pinned layer structure includes first and second magnetic layers separated from one another by a non-magnetic coupling layer. The second magnetic layer of the magnetic pinned layer structure includes a layer of CoFeBTa, which prevents the diffusion of atoms and also promotes a desired BCC crystalline grain growth. The magnetic free layer structure can also include such a CoFeBTa layer for further prevention of atomic diffusion and further promotion of a desired BCC grain growth.04-18-2013
20100007991CARRIAGE ASSEMBLY AND RECORDING MEDIUM DRIVE - According to one embodiment, a carriage assembly includes a carriage block main body, a carriage arm, a head suspension, a flexible printed circuit board, and a viscoelastic adhesive. The carriage block main body is rotatably supported by a shaft. The carriage arm extends from the carriage block main body. The head suspension is attached to an end of the carriage arm, and supports a head slider at an end. The flexible printed circuit board is partially fixed to the head suspension, extends from the head suspension toward the carriage block main body, and is affixed to a surface of the carriage arm. The viscoelastic adhesive is sandwiched between the carriage arm and the flexible printed circuit board.01-14-2010
20100309585HEAD SLIDER AND MAGNETIC DISK DEVICE - A head slider is capable of restricting deformation of a medium-facing surface, and includes heat generating elements located at a distance from a read/write head in a Y direction corresponding to the radial direction of a disk medium. A width of the heat generating element in a Z direction is smaller than the widths in the X and Y directions.12-09-2010
20130188282PEIZOELECTRIC ACTUATOR, HEAD GIMBAL ASSEMBLY INCLUDING THE SAME AND METHOD OF FORMING THE SAME - According to embodiments of the present invention, a piezoelectric actuator is provided. The piezoelectric actuator includes a shear mode piezoelectric material including a first arm and a second arm intersecting each other, the shear mode piezoelectric material having a polarization direction oriented at least substantially along a length of the first arm, wherein the shear mode piezoelectric material has a first surface and a second surface opposite to the first surface, the first surface and the second surface being adapted to undergo a shear displacement relative to each other along an axis at least substantially parallel to the polarization direction in response to an electric field applied between the first surface and the second surface in a direction at least substantially perpendicular to the polarization direction.07-25-2013
20130201581SUSPENSION SUBSTRATE, SUSPENSION, SUSPENSION WITH HEAD, HARD DISK DRIVE, AND METHOD OF MANUFACTURING SUSPENSION SUBSTRATE - A suspension substrate includes a metal substrate, a first insulating layer provided on the metal substrate, a first wiring line layer provided on the first insulating layer, a second insulating layer provided on the first insulating layer and the first wiring line layer, and a second wiring line layer provided on the second insulating layer. When a total of a thickness of the first wiring line layer and a thickness of the second insulating layer on the first wiring line layer is T08-08-2013
20130094107INDUCED TRANSDUCER HEAD VIBRATION - Vibration of a transducer slider can be used during slider fly height calibration to detect contact of the transducer slider with a disc surface. Amplification of the vibration may cause the transducer slider to tap the disc surface rather than drag across the disc surface when detecting contact with the disc surface. Amplification may be achieved by applying an in-phase AC signal to the transducer slider at the same frequency as the vibration of the slider. Reduced contact between the slider and the disc surface reduces wear on and the possibility of damage to the transducer slider and/or the disc surface. Once the fly height of the transducer slider is calibrated, the AC signal may be shifted out-of-phase with the slider vibration to dampen the slider vibration.04-18-2013

Patent applications in class Air bearing slider detail

Patent applications in all subclasses Air bearing slider detail