Abstract: A method and system for providing a perpendicular magnetic recording transducer are disclosed. The method and system include providing a metallic underlayer and providing an insulator, at least a portion of which is on the metallic underlayer. The method and system also include forming a trench in the insulator. The bottom of the trench is narrower than the top of the trench and includes a portion of the metallic underlayer. The method and system also include providing a nonmagnetic seed layer that substantially covers at least the bottom and sides of the trench. The method and system also include plating a perpendicular magnetic pole material on at least a portion of the seed layer and removing a portion of the perpendicular magnetic pole material. A remaining portion of the perpendicular magnetic pole material forms a perpendicular magnetic recording pole.

Abstract: A perpendicular magnetic recording write head has a main pole that is typically CoFe electroplated into a generally trapezoidal shaped alumina trench. A metallic side gap layer is deposited into the alumina trench to adjust the trench width to the desired main pole dimension. A nonmagnetic metallic amorphous underlayer, preferably an amorphous NiTa alloy or an amorphous NiNb alloy, is then deposited on the side gap layer. A pole seed layer, such as a NiCr/CoFe bilayer, is deposited into the trench onto the metallic amorphous underlayer prior to electroplating the CoFe main pole. The metallic amorphous underlayer serves to reset the growth between the side gap layer and the NiCr/CoFe pole seed layer. The metallic amorphous underlayer does not insulate the electroplating CoFe layer from the metallic side gap layer, which allows for better current conduction normal to the layers, resulting in a main pole with improved magnetic properties.

Abstract: A system including a printed circuit board having a plurality of vias, a first integrated circuit mounted on a first surface of the printed circuit board, and a casing mounted on a second surface of the printed circuit board. The first surface of the printed circuit board is opposite to the second surface of the printed circuit board. Each of the plurality of vias has (i) a first end extending to the first surface of the printed circuit board and (ii) a second end extending to the second surface of the printed circuit board. The first integrated circuit is in thermal contact with the first ends of the plurality of vias. The casing is in thermal contact with the second ends of the plurality of vias.

Abstract: An optical disc drive comprises a flash memory, an optical pick-up head, a spindle motor and a control unit. The control unit generates a determination result according to whether the optical disc drive has a disc loaded therein, and stores the determination result into the flash memory when the optical disc drive receives a power. The control unit reads the determination result from the flash memory after receiving the power again, and determines whether to control the optical pick-up head and the spindle motor to execute the disc detection procedure according to the determination result. If the determination result is negative, whether the optical disc drive has a disc loaded therein is determined according to a rotation speed of the spindle motor. If the rotation speed is larger than a threshold value, the control unit determines that no disc is loaded in the optical disc drive.

Abstract: A head suspension with a connecting structure for a plate material comprises a base plate attached to a carriage that rotates the base plate around an axis, a load beam including a rigid part and a resilient part, a base end of the load beam fixed to the base plate at a plurality of first welded points, a flexure including a read/write head and a wiring and fixed to the load beam at a plurality of second welded points, and a resin seat interposed between the load beam and the flexure so that the resin seat prevents the load beam and the flexure from hitting each other due to vibration of at least one of the load beam and the flexure.

Abstract: A magnetic sensor may be generally configured in accordance with various embodiments to have a magnetically responsive stack with first and second free layers and without a fixed magnetization. The first and second free layers can be tuned to have different stripe heights from an air bearing surface (ABS) and square rear surface features distal the ABS.

Abstract: A head suspension includes a base to be attached to a carriage, a load beam having a rigid part and a resilient part that connects the rigid part to the base, the load beam applying load onto a read/write head, a flexure attached to the load beam and supporting the head, an actuator attaching part located between the base and the head, and a piezoelectric element being deformable in response to a voltage applied thereto to move the head in a sway direction relative to the base. For the head suspension, it bonds the piezoelectric element with a bonding tape to the actuator attaching part and applies an adhesive to fix the piezoelectric element to the actuator attaching part.

Abstract: A magnetic write head having a stitched magnetic pole (also referred to as a shaping layer) for conducting magnetic flux to the pole tip portion of a magnetic write pole. The stitched magnetic pole has a shape so as to be thicker in a central region that is aligned with the pole tip of the write pole and is thinner a its outer sides. This shape helps to channel magnetic flux to the pole tip portion of the write pole while maintaining sufficient pole surface area for high data rate recording.

Abstract: A data writer may be generally configured at least with a write pole that has a pole sidewall and a continuous first taper angle connecting leading and trailing edges. The write pole can be positioned adjacent to a side shield that is configured with first and second shield sidewalls tapered to a shield tip that is the closest point between the write pole and side shield.

Abstract: A device having an air bearing surface, the device including a writer portion having an air bearing surface at the air bearing surface of the device; and an overcoat layer disposed on at least a portion of the air bearing surface of the writer portion, wherein the overcoat includes a material having a magnetic moment of at least about 0.1 Tesla (T).

Abstract: A magnetic head includes first and second coils, a main pole, a write shield, a return path section, and a yoke. The return path section is located on the front side in the direction of travel of a recording medium relative to the main pole. The yoke is located on the rear side in the direction of travel of the recording medium relative to the main pole. The first coil is wound around the main pole. The second coil is located on the rear side in the direction of travel of the recording medium relative to the main pole so as to pass between the main pole and the yoke.

Abstract: A head suspension assembly for a disk drive includes a mounting plate that may include an annular swage boss. A load beam is attached to and extends from the mounting plate in a longitudinal direction. A first piezoelectric element is disposed within a first piezoelectric element receiving window in the mounting plate. The load beam includes a first etched region that is elongated in a transverse direction that is transverse to the longitudinal direction. The first etched region neighbors the first piezoelectric element and is disposed closer to the annular swage boss than is the first piezoelectric element.

Abstract: A method and system provide a magnetic recording transducer having air-bearing surface (ABS). The magnetic recording transducer includes a pole, a side shield, a nonmagnetic gap between the side shield and the pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS. The side shield includes at least one nonconformal portion that extends from a throat height in a stripe height direction perpendicular to the ABS and is nonconformal with the pole. The spacing between the nonconformal portion(s) of the side shield and the pole varies based on a distance from the ABS.

Abstract: A method and system provide a magnetic transducer having an air-bearing surface (ABS). The magnetic transducer includes a write pole and at least one coil. The write pole has a pole tip and a yoke. The coil(s) energize the write pole. The coil(s) include a plurality of turns a first distance from the pole and at least one additional turn a second distance from the pole. The first distance is different from the second distance. The at least one additional turn extends over at least part of two of the plurality of turns, has a length in a stripe height direction perpendicular to the ABS and has a height in a down track direction. The length is greater than the height.

Abstract: A disk drive device includes a rotating body that rotates and drives a disk, a stationary body which includes a chassis with a protrusive part and a stator core fastened with the chassis, and a fluid bearing unit. The chassis has a recess with a bottom provided in the protrusive part, and the fluid bearing unit includes an insertion part inserted in the recess with the bottom, and a core encircled part. A gas passage is provided which causes a clearance space between the insertion part and the recess with the bottom to be in communication with a disk retaining space.

Abstract: A disk clamp that can engage a disk hub to couple a disk media to a disk hub, the disk clamp having a body portion, and a groove formed in a surface of the body portion and extending at least in a circumferential direction substantially parallel to at least a portion of the circumference of the disk clamp; and a balance weight installed in the groove formed in the surface of the disk clamp, the balance weight having a quantity of material applied in the groove. A disk drive assembly using the disk hub and a method of correcting a drive imbalance using the disk hub.

Abstract: A tape cartridge library that is equipped with a cleaning device is described. The tape cartridge library essentially includes a plurality of tape cartridges each possessing recording tape media. A plurality of tape drives that read and write data to and from each of the tape cartridges. A tape cleaning drive incapable of transferring data to and from the recording tape media which is independent of the tape drives, the tape cleaning drive disposed entirely within the tape cartridge library. The tape cleaning drive automatically receives one of the tape cartridges and cleans its respective recording tape medium when a predetermined reason for cleaning the tape cartridge is justified.

Abstract: A disc device which takes out a disc stored in a magazine and conveys the disc to any disc drive, in which the magazine comprises a tray which stores a plurality of discs, and a case which has a substantially rectangular parallelepiped shape and which stores the tray. The case has an opening at front face into which the tray can be inserted into or taken out therefrom. The tray has an outer shape being substantially rectangular in planar view. The tray is provided with cut portions formed at corner portions positioned on the back side of the case being cut off. The disc device further comprises a picker which holds the tray and draws out the tray from the case. The picker rotates the tray when the cut portion passes through the opening.

Abstract: A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor has both side shields and an antiparallel structure (APS) top shield. The APS top shield is an antiferromagnetically exchange-coupled top shield that includes an antiparallel (AP) coupled structure and an antiferromagnetic (AF) layer which permits the use of the desired NiFex (x is between 15 and 25 atomic percent) material for the side shields. The APS top shield includes lower and upper ferromagnetic layers with respective antiparallel magnetizations. The antiparallel coupling structure between the two ferromagnetic layers consists of the antiparallel coupling (APC) film, which is typically Ru, Ir or Cr, and one and only one interface film of Co or CoFe. The APS top shield with one and only one Co or CoFe interface film enables the material of the side shields to be formed of the preferred NiFex (x is between 15 and 25 atomic percent) material without over-stabilization of the free layer.

Abstract: A magnetic recording head includes a main magnetic pole generating a recording magnetic field, a trailing shield, a recording coil generating a magnetic field and a high frequency oscillator. The trailing shield includes a magnetic region including a gap side end surface facing a write gap and a nonmagnetic film arranged in the vicinity of the write gap in the trailing shield, and within a plane including track width direction centers of the main magnetic pole and the high frequency oscillator and being perpendicular to a recording layer of a recording medium, a film thickness of the nonmagnetic film along a track moving direction is substantially equivalent to or more than a half of a distance from the gap side end surface to the nonmagnetic film.