Abstract: A magnetic read sensor having improved robustness to withstand thermal variations resulting from thermal fly height heating. Improved thermal robustness comes as a result of improved pinned layer pinning. The read head includes an AFM layer having an increased thickness to provide a higher blocking temperature. The read head further includes a pinned layer structure that includes a first magnetic layer adjacent to and exchange coupled with the AFM layer. The first layer comprises a Co—Fe layer with an increased Fe content of 20-30 atomic percent. The pinned layer structure also includes a second magnetic layer that is antiparallel coupled with the AP1 layer. The AP2 layer can be a multi-layer structure that includes a layer of CoFe, a layer of Co—Fe—Hf formed on the layer of Co—Fe, a layer of Co—Fe—B formed on the layer of Co—Fe—Hf, and a second layer of Co—Fe formed on the layer of Co—Fe—B.

Abstract: An HSA transport comb includes an alignment pin extending from the comb body into a tooling hole of the actuator arm, and a separator finger in contact with a suspension assembly of an HGA with the transport comb in a second angular orientation with respect to the actuator arm, but not in a first angular orientation. The transport comb includes a restraining tower extending into a mass-reduction opening of the actuator arm. The restraining tower includes a first lobe that fits within the mass-reduction opening with the transport comb in the first angular orientation, but not with the transport comb in the second angular orientation. The restraining tower also includes a first neck that fits within the mass-reduction opening with the transport comb in either angular orientation, and has a neck height that is greater than the actuator arm thickness.

Abstract: A thin film magnetic head includes: a magneto resistance effect film of which electrical resistance varies corresponding to an external magnetic field; a pair of shields provided on both sides in a manner of sandwiching the MR film in a direction that is orthogonal to a film surface of the MR film; an anisotropy providing layer that provides exchange anisotropy to a first shield of the pair of shields in order to magnetize the first shield in a desired direction, and that is disposed on the opposite side from the MR film with respect to the first shield; and side shields that are disposed on both sides of the MR film in a track width direction and that include soft magnetic layers magnetically connected with the first shield.

Abstract: A thin film magnetic head includes; an MR film that includes a pinned layer of which a magnetization direction is pinned, a free layer of which a magnetization direction varies, and a spacer that is disposed therebetween; a pair of shields that are disposed on both sides sandwiching the MR film in a direction orthogonal to a film surface of the MR film; and an anisotropy providing layer that provides anisotropy to a first shield so that the first shield is magnetized in a desired direction, and that is disposed on an opposite side from the MR film with respect to the first shield. The MR film includes a magnetic coupling layer that is disposed between the first shield and the free layer and that magnetically couples the first shield with the free layer.

Abstract: A method for manufacturing a head suspension is capable of suppressing the dispersion in the vibration control effect of a head suspension and improve productivity, the manufacturing method includes a step of punching, by use of a hollow punch having a tooth portion at a distal end thereof, a vibration damper piece out from a base material having a vibration damper provided detachably on a liner through an attaching surface, to hold the vibration damper piece on a hollow internal surface of the punch, a step of positioning the punch holding the vibration damper piece on an objective portion of a semi-finished head suspension, and a step of attaching, by use of an extruding implement, the vibration damper piece on the objective portion with the attaching surface through extruding the vibration damper piece from the punch.

Abstract: According to one embodiment, a magnetic head includes a reproducing section. The reproducing section has a medium facing surface facing a magnetic recording medium and detects a direction of magnetization recorded in the medium. The reproducing section includes a first magnetic pinned layer, a second magnetic pinned layer, and a magnetic free layer. Directions of magnetizations of the first and second magnetic pinned layers are pinned. The second magnetic pinned layer is stacked with the first magnetic pinned layer in a first direction parallel to the medium facing surface. The magnetic free layer is provided between the first and second magnetic pinned layers. A direction of magnetization of the magnetic free layer is changeable. A length of the magnetic free layer along a second direction perpendicular to the medium facing surface is shorter than lengths of the first and second magnetic pinned layers along the second direction.

Abstract: This application discloses a hard disk drive, a head stack assembly, and a printed circuit board configured to include impedance patches on the flex ground plane, the flex power plane, the printed circuit ground plane and/or the printed circuit power plane over or under a connector site in the disk base that conveys access read and write differential signals for the sliders' access of rotating disk surfaces. These impedance patches minimize impedance discontinuities in the read and/or write differential signals through the connector site, which may improve the ability of the hard disk drive to transmit these signals at higher frequencies.

Abstract: A ramp to park a read/write head includes a fixed portion fixed to a base member of the hard disk drive, and a supporting portion to contact and support the tip-tab of the suspension assembly and includes an inclined rail surface and a horizontal rail surface which extend in a moving direction of the tip-tab, wherein a rail boundary between the inclined rail surface and the horizontal rail surface is inclined with respect to a lengthwise axis of the tip-tab. The rail boundary can be a straight line inclined at an angle with respect to the lengthwise axis of the tip-tab, or can be curved toward the horizontal rail surface or the inclined rail surface.

Abstract: According to one embodiment, there is provided a magnetic recording apparatus including a head slider including read and write elements, and a magnetic recording medium including magnetically recordable recording tracks with a width L1, a wide land track with a width L2 larger than the width L1 of the recording track, and non-recording sections with a width G1 each provided between adjacent recording tracks. The width L1 of the recording track is smaller than a bottom read width BRW of the read and write elements, and the width L2 of the wide land track is larger than the bottom read width BRW of the read and write elements.

Abstract: A micro actuator for two-stage actuator, which serves to position a magnetic disc apparatus, according to the invention comprises thermal actuators formed from a thin film resistance to generate a high force and arranged on both sides of a slider, and a parallel flat plate spring for driving the slider and a head element in a track widthwise direction, and has function to mount thereon a laser diode for thermal assist recording.

Abstract: An MR element includes an MR stack disposed between first and second main shield portions, and a pair of side shields disposed on opposite sides of the MR stack in the track width direction. The first main shield portion includes a first exchange coupling shield layer that is exchange-coupled to a first antiferromagnetic layer. The second main shield portion includes a second exchange coupling shield layer that is exchange-coupled to a second antiferromagnetic layer. The MR stack includes a spacer layer, and first and second free layers with the spacer layer therebetween. The direction of magnetization of the first free layer is controlled by the first exchange coupling shield layer. The direction of magnetization of the second free layer is controlled by the second exchange coupling shield layer. Each side shield includes at least one shield-coupling magnetic layer that is in contact with and magnetically coupled to one of the first and second exchange coupling shield layers.

Abstract: A substrate for suspension which is produced at low costs and can sufficiently attain the prevention of damage by electrostatic discharge and restraint of noises. The substrate for suspension includes: a metallic substrate, an insulating layer formed on the metallic substrate and having an opening from which the metallic substrate is exposed, a grounding-wiring layer formed on the insulating layer and arranged near the opening, and a ground terminal formed in the opening and contacting the metallic substrate and the grounding-wiring layer. The ground terminal is made of a metal having a melting point of 450° C. or lower.

Abstract: A magnetic head suspension having a thin metallic plate as a substrate which is caused to have a new function besides a function as a spring. The magnetic head suspension plural lines for connecting a magnetic head and a control circuit board to each other are formed over a thin metallic plate having a spring property through an insulating layer, and are integrated with the thin metallic plate A metallic pad made of a same metal layer as the plural lines is formed independently of the lines, an opening is made in a portion of the metallic pad to penetrate the insulating layer and then to reach the thin metallic plate, and an electroconductive region is formed into the opening by metal plating, thereby connecting the metallic pad and the thin metallic plate electrically to each other.

Abstract: A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe layer directly above the AFC film, on the side of the AFC film opposite the side facing the substrate, and in contact with the Ru AFC film and the lower FeCo layer of the upper multilayer. There is no NiFe layer directly below the Ru AFC film so the side of the AFC film facing the substrate is in direct contact with the upper FeCo layer of the lower multilayer.

Abstract: The object of the present invention is to provide a suspension substrate such that the thickness of an insulating layer for supporting a connecting terminal having a flying structure is uniform. The present invention attains the object by providing a suspension substrate, comprising a metal supporting substrate, an insulating layer formed on the metal supporting substrate, and a wiring layer formed on the insulating layer, wherein a wiring layer projecting section is provided by a plurality; an adjusting section formed on the insulating layer and composed of a first adjusting section and a second adjusting section is provided on both sides of the plural wiring layer projecting sections; and a gap between a first outermost wiring layer projecting section and the first adjusting section, a gap between the adjacent wiring layer projecting sections, and a gap between a second outermost wiring layer projecting section and the second adjusting section are equal.

Abstract: A hard disk drive includes a head stack assembly having a read/write head to read data stored on a disk and/or to write data to the disk while flying over the disk. The read/write head includes an end tap that is disposed at a peripheral portion of the read/write head. A head parking ramp is arranged close to the disk and may support the read/write head while in the park position such that the end tap contacts the head parking ramp and is supported thereon. A heater is provided in the head parking ramp to heat the read/write head.

Abstract: A head-slider. The head-slider includes a magnetic-recording head and an air-bearing surface. The air-bearing surface includes air-bearing portions, shallow-recessed surfaces, and a deep-recessed surface. Air-bearing portions are configured to fly nearest to a magnetic-recording disk; shallow-recessed surfaces have a first depth from the air-bearing portions; the deep-recessed surface has a second depth, larger than the first depth, from the air-bearing portions. Air-bearing portions and shallow-recessed surfaces are configured to generate positive pressure; and, the deep-recessed surface is configured to generate negative pressure.

Abstract: A magnetic head slider is disclosed. The magnetic head slider includes a slider substrate and a laminated magnetic head element on the slider substrate. Additionally, the laminated magnetic head element includes a magnetoresistance effect element and a recording magnetic pole formed in a layer higher than the magnetoresistance effect element. A first thin-film resistor heater element is formed in a position further from an air bearing surface than the magnetoresistance effect element and the magnetic recording pole and a second film resistor heater element is formed in a layer lower than the first thin-film resistor heater element, and closer to the air bearing surface and the magnetoresistance effect element than the first heater element. A thin-film resistor sensor element is formed in a layer higher than the second thin-film heater element and closer to the air bearing surface than the second heater element.

Abstract: A head suspension has a base plate including a flange. The flange has a first face attached to the carriage arm and a second face attached to an auxiliary member. A first-face contact is circumferentially formed along an outer circumferential edge of the first face of the flange, so that the first-face contact among parts of the base plate except the boss is most proximal to the carriage arm. A second-face contact is circumferentially formed along an outer circumferential edge of the second face of the flange, so that the second-face contact among parts of the base plate including the boss is most proximal to the auxiliary member. This configuration allows the auxiliary member to be correctly aligned with and attached to the second face of the flange.

Abstract: A magnetic head slider including a first face adjacent to a recording medium, a shallow groove face formed at a first depth from the levitating face, a deep groove face formed at a second depth from said first face, where the second depth is greater than the first depth. The head slider also includes a negative pressure generating face comprising the deep groove face, first levitating faces enclosing a periphery of the negative pressure generating face on an inlet side of the head slider, and second levitating faces formed on opposite sides of the head slider, wherein the first levitating faces and the second levitating faces are separated.

Abstract: An actuator and method of using an actuator that operably supports a component of a data transfer assembly. The actuator has a body and an arm extending longitudinally from the body. The arm has a tapered portion defined by laterally converging opposing surfaces from a proximal end of the arm adjacent the body and terminating at a medial longitudinal position of the arm. The arm further has a tip portion extending contiguously from the medial longitudinal position of the arm to a distal end of the arm. The tip portion has laterally opposing protuberant arcuate lobes that cooperatively define a maximum lateral width of the tip portion. In some embodiments the arm has a surface defining an aperture sized for operably swaging a head gimbal assembly (HGA) to the arm. A lateral apex of at least one of the lobes is intersected by a lateral axis that intersects the aperture.

Abstract: A magnetoresistance device comprises a substrate, an elongate semiconductor channel extending in a first direction and at least two conductive leads providing a set of contacts to the channel. The device may comprise an optional semiconductor shunt in contact with the channel. The optional shunt, channel and set of contacts are stacked relative to the substrate in a second direction which is perpendicular to the first direction and the surface of the substrate. The device has a side face running along the channel. The device is responsive to a magnetic field generally perpendicular to the side face.

Abstract: Approaches for reducing vibrations, such as resonance vibrations, that are propagated to a hard-disk drive (HDD) head are disclosed. A hard-disk drive may compromise a lead suspension that includes a magnetic read/write head. The magnetic read/write head may be connected to the lead suspension by a plurality of leads. A portion of each of the plurality of leads, such as the solder ball joints, may be covered by a dampening material that is designed to absorb vibrations occurring in the lead suspension to prevent transmission of the vibrations to the magnetic read/write head. Alternately, the dampening material may be applied to other locations, such as the limiter engagements, which can transmit vibrations to the magnetic read/write head.

Abstract: The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion.

Abstract: In a disk drive device, a recording disk is mounted on a rotor. A base has a bearing hole, the center of which is along the rotational axis of the rotor. A bearing unit rotatably supports the rotor with respect to the base, the bearing unit being glued to the bearing hole. A ring-shaped first groove, the center of which is along the rotational axis, is arranged on a side surface of the bearing hole. A ring-shaped second groove, the center of which is along the rotational axis, is arranged on an outer surface of the housing, the outer surface contacting the side surface of the bearing hole. The position of the second groove with respect to its direction along the rotational axis is different from the position of the first groove with respect to its direction along the rotational axis. The base and the bearing unit are electrically connected by a conductive resin applied along an edge portion of the bearing hole, the edge portion being on a lower surface of the base.

Abstract: A tolerance ring has a band (16) with outwardly extending corrugated protrusions forming waves (2) which engage a surface (8) of the bore (4) in a housing (5). At one end of the tolerance ring is an outwardly flared guide surface (15) extending axially from the band (16). The guide surface (15) acts as an enlarged entrance to the band (16) for a shaft (3) to be mounted in the bore (4) by insertion into the tolerance ring. The use of the guide surface (15) assists assembly and reduces or eliminates particle production. It is also possible for the corrugated portions to extend inwardly, for the guide surface to be inwardly flared, and for the tolerance ring to be mounted on the shaft prior to insertion in the bore.

Abstract: A turntable for a storage disk drive apparatus includes a plate member made of a ferromagnetic material and a central resin member arranged at the center of the plate member and provided with an outer peripheral portion positioned above the plate member. The central resin member includes claws extending downwards from the outer peripheral portion and claw position holes overlapping with the claws in the direction parallel to the center axis of the central resin member. The claw position holes include inner surfaces spaced apart from an edge of the plate member. The inner surfaces are defined by the resin. The central resin member includes a resin layer extending in the direction perpendicular to the center axis. The resin layer exists between the portion of the edge of the plate member around the claw position holes and the claw position holes.

Abstract: A cylindrical boss portion is press-formed on a baseplate of a disk drive suspension. The boss portion is penetrated by a ball insertion hole relative to the thickness of the baseplate. The baseplate is formed of stainless steel. A chemically-polished surface is formed on an inner circumferential wall of the ball insertion hole by chemically polishing the baseplate after heat-treating it. The boss portion is inserted into a mounting hole of an actuator arm. A ball having a diameter larger than the inside diameter of the ball insertion hole is passed through the ball insertion hole. As the diameter of the boss portion is enlarged by the ball, the boss portion is fixed to the actuator arm.

Abstract: This application discloses a hard disk drive comprising a arm limiter mounted on a disk base to limit movement of the actuator arms during a non-operational shock event while parked. The arm limiter and disk base are disclosed in various combinations to limit actuator arm movement during non-operational shocks.

Abstract: The present invention provides a disk drive device that can easily be reduced in size with a simple structure by reducing foreign matters floating in a lubricant to reduce inconvenience caused by the floating foreign matters. The disk drive device includes a fixed body section, a rotating body section, a bearing unit and a drive unit.

Abstract: According to one embodiment, a head stack assembly incorporating device connects a head stack assembly to the base of a magnetic disk device by screwing a connector on the bottom surface of the rotational shaft of the head stack assembly and a connector on the base of the magnetic device together. The head stack assembly incorporating device includes a chuck and a driving-force transmitter. The chuck pinches the rotational shaft of the head stack assembly from the upper surface of the head stack assembly to be fixed to the rotational shaft. The chuck is rotatable around the central axis of the rotational shaft. The driving-force transmitter transmits a rotational force to the chuck.

Abstract: A disk hard disk drive that includes a spindle motor and an actuator arm coupled to a base plate. A plurality of disks are coupled to the spindle motor and a plurality of heads are coupled to the actuator arm and the disks. The drive also includes a cover attached to the base plate. The cover and base plate enclose a hard disk area that has a horizontal center line. The hard disk area includes a volume of air above the horizontal center line that is equal to a volume of air below the horizontal center line. The air space within the hard disk area is equal and symmetrical in a vertical direction. Such an arrangement reduces track mis-registration when servo is copied from a disk surface to the other surfaces of the disks in the drive.

Abstract: This application discloses a hard disk drive, a head stack assembly, a head gimbal assembly, each including a slider with a deposited end including at least one means for retaining lubricant that tends to accumulate on the deposited end.

Abstract: A system, method, and apparatus for forming a high quality master pattern for patterned media, including features to support servo patterns, is disclosed. Block copolymer self-assembly is used to facilitate the formation of a track pattern with narrower tracks. E-beam lithography forms a chemical contrast pattern of concentric rings, where the spacing of the rings is equal to an integral multiple of the target track pitch. The rings include regions within each servo sector header where the rings are offset radially by a fraction of a track pitch. Self-assembly is performed to form a new ring pattern at the target track pitch on top of the chemical contrast pattern, including the radial offsets in the servo sector headers. When this pattern is transferred to disks via nanoimprinting and etching, it creates tracks separated by nonmagnetic grooves, with the grooves and tracks including the radial offset regions.

Abstract: A system according to one embodiment includes a write pole having an end region positioned towards an air bearing surface, a first flare point, and a second flare point positioned between the air bearing surface and the first flare point; and a shield positioned above the write pole, wherein a cross sectional area of the write pole at a point between the first and second flare points along a plane passing through the write pole and oriented about parallel to the air bearing surface is greater than a cross sectional area of the end region of the write pole along a plane oriented parallel to the plane passing through the second flare point. Additional systems and methods are also presented.

Abstract: Interconnections for attaching a suspension assembly to an arm of an actuator or positioning device are disclosed. In illustrated embodiments, the interconnection includes one or more weld connections formed along opposed side seams of overlapping portions of the arm and head suspension assembly. In illustrated embodiments, the weld connections are formed along side surfaces generally transverse to upper and lower surfaces of the arm. In another embodiment, a groove pattern is formed, for example via a laser etching process, in an overlapping portion of the head suspension assembly or arm and an epoxy is inlayed in the groove to connect the head suspension assembly and arm. Illustrated embodiments also include multiple connections including, for example, a swage connection and a weld or other connection.

Abstract: A flex cable comprises a base film, a first adhesive layer coupled with the base film, and at least two signal traces coupled with the first adhesive layer. The flex cable comprises a second adhesive layer coupled with the signal traces and the first adhesive layer, and a cover film coupled with the second adhesive layer. The flex cable comprises an electrically conductive layer adjacent to the signal traces, and parallel with the base film and the cover film.

Abstract: According to one embodiment, a carriage assembly includes a carriage block body, a carriage arm, a coil, a pair of support arms, and a frame body. The carriage block body is rotatably connected to a spindle. The carriage arm extends forward from the front of the carriage block body. The coil is located behind the carriage block body, and defines a linear region extending along a reference straight line extending radially from the center of the spindle. The support arms extend in parallel to the linear region from a back surface of the carriage block body. The frame body is made of a resin material, and fills between the coil and the support arms to couple the coil and the support arms. The support arms extend more outside than the external end of the linear region of the coil in the radial direction.

Abstract: A hard disk drive (HDD) has a stack of disks mounted on a rotatable spindle with the disks being movable axially, i.e., in a direction parallel to the axis of rotation of the spindle. A disk separator is located inside the spindle and separates axially-adjacent disks in a pair to create an axial gap. Any pair of axially-adjacent disks can be separated so that different axial gaps are created. A single head-arm assembly with at least one and preferably two read write heads is movable axially so that it can be rotated by the rotary actuator into any one of the axial gaps. The read/write heads can thus access data on the disk surfaces in the axial gaps. When it is desired to have the disk separator create an new axial gap and thus a new pair of disk surfaces to be accessed, the actuator rotates the head-arm assembly away from the outer perimeters of the disks and moves the read/write heads onto a head support structure that supports the read/write heads off the disks.

Abstract: A method corrects a head suspension by irradiating an objective part of the head suspension with a laser beam before or after mounting a read/write head on the head suspension. The method can precisely correct the head suspension even when correcting the head suspension a plurality of times. The method includes drawing, with the laser beam, a straight line of predetermined length on the objective part and repeating this process a plurality of times in such a way that the direction of a straight line drawn this time crosses the direction of a straight line drawn last time.

Abstract: According to one embodiment, a storage disk drive includes a housing, a storage disk, a head actuator, a load tab, a ramp member, a magnetic pattern, and an electromagnetic transducer device. The storage disk is housed in the housing. The head actuator is housed in the housing to be swingable around a support shaft, and includes an end facing the storage disk. The load tab is supported by the end of the head actuator. The ramp member is fixed to the housing outside the storage disk, and defines a passage of the load tab along a circular arc drawn with a predetermined curvature. The magnetic pattern includes magnetic poles arranged on the ramp member along the passage. The electromagnetic transducer device is supported by the end of the head actuator, and reads the magnetic poles on the ramp member.

Abstract: A magnetic head assembly includes a magnetic recording head, a head slider, a suspension and an actuator arm. The magnetic recording head includes: a main magnetic pole; an adjustment magnetic pole provided together with the main magnetic pole; a spin torque oscillator; a main magnetic pole coil being wound around the main magnetic pole; and an adjustment magnetic pole coil being wound around the adjustment magnetic pole. At least part of the spin torque oscillator is provided between the main magnetic pole and the adjustment magnetic pole. A way of winding of the adjustment magnetic pole coil is different from a way of winding of the main magnetic pole coil. 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.

Abstract: A magnetic head suspension having a thin metallic plate as a substrate which is caused to have a new function besides a function as a spring. The magnetic head suspension plural lines for connecting a magnetic head and a control circuit board to each other are formed over a thin metallic plate having a spring property through an insulating layer, and are integrated with the thin metallic plate A metallic pad made of a same metal layer as the plural lines is formed independently of the lines, an opening is made in a portion of the metallic pad to penetrate the insulating layer and then to reach the thin metallic plate, and an electroconductive region is formed into the opening by metal plating, thereby connecting the metallic pad and the thin metallic plate electrically to each other.

Abstract: An arm has one end coupled to a head suspension and the other end defining a domed surface in a head suspension assembly. The domed surface establishes point contact against the side surface of a head slider. The arm is designed to restrain the direction of application of a force along an imaginary plane including the back surface of the head slider. A piezoelectric element is bonded to the arm at a position between the one end and the other end of the arm. The head suspension assembly allows the arm to curve in response to expansion/shrinkage of the piezoelectric element. A driving force is applied from the arm to the head slider based on the curvature of the arm. Since point contact is established between the arm and the side surface of the head slider, the curvature of the arm cannot be restrained.

Abstract: A ramp to park a read/write head includes a fixed portion fixed to a base member of the hard disk drive, and a supporting portion to contact and support the tip-tab of the suspension assembly and includes an inclined rail surface and a horizontal rail surface which extend in a moving direction of the tip-tab, wherein a rail boundary between the inclined rail surface and the horizontal rail surface is inclined with respect to a lengthwise axis of the tip-tab. The rail boundary can be a straight line inclined at an angle with respect to the lengthwise axis of the tip-tab, or can be curved toward the horizontal rail surface or the inclined rail surface.

Abstract: In a magnetic recording medium, there are realized an improvement in surface planarity and a reduction in characteristic degradation. The magnetic recording medium is fabricated so that the upper layer of a recording layer and a refill layer are formed of the same material.

Abstract: A head support device allowing a further increase in shock resistance against an external impact, a disk device having the head support device, and a portable electronic device having the disk device are disclosed. In the head support device, head support arm on which head slider with a head is disposed through a flexible and elastic gimbal mechanism is formed rotatably about rotary shaft as a horizontal rotating axis in parallel with a disk surface. Head support arm is formed such that it pivots about a straight line drawn between apexes of a pair of pivots as vertical pivot axis vertically with respect to the disk surface. A gravity center position of a total mass of members, except the head slider, pivoting about vertical pivot axis is positioned near vertical pivot axis. The disk device includes the foregoing head support device.

Abstract: A suspension load beam used for attachment to a slider assembly and an actuation arm in a disc drive for data storage has a rigid middle beam section comprising a rigid bottom layer, a rigid top layer and a composite core layer sandwiched between the bottom layer and the top layer. A method for fabricating a vibration resistant mechanical member used a disc drive subject to high frequency motion operations is also disclosed. The method involves making an integral laminate structure and fabricating the mechanical member from the integral laminate structure. The integral laminate structure has a rigid bottom layer, a composite core layer on top of the rigid bottom layer, and a rigid top layer on top of the core layer so that the composite core layer is sandwiched between the rigid bottom layer and the rigid top layer.

Abstract: A storage device includes a storage medium; a rotating shaft; a head actuator pivotally supported about the rotating shaft; a head fixed at an end of the head actuator for reading/writing information from/to the storage medium; and a magnetic circuit having a magnetic member and a magnet connected thereto. The magnet has a magnetic characteristic corresponding to the inertia of the head actuator. The storage device further includes a coil fixed at the other end of the head actuator. The coil generates a driving force proportional to the inertia when an electric current is flown through the coil by interaction with the magnetic circuit. The driving force causes the head actuator to be driven to adjust the head to a target position on the storage medium. The magnetic member is configured as a single unit having a common dimension among a plurality of storage devices having different specifications.

Abstract: A method for manufacturing a magnetic recording medium which has a substrate and a magnetic layer formed on the substrate, the method including: forming the magnetic layer over a convexo-concave pattern provided on a surface of a mold, and releasing the mold from the magnetic layer formed on the substrate.