Abstract: A thin film magnetic head for a magnetic tape drive to correctly read out, even if off-track, the high density magnetic patterns recorded on magnetic tape without picking up noise from adjacent tracks. A thin film magnetic head is comprised of a first composite thin film magnetic head having a read element and write element with complementary parallel read gaps and write gaps to read and write information on a first track of a magnetic tape, and a second composite thin film magnetic head having a read element and write element with a complementary parallel read gap and a write gap to read and write information on a second track adjacent to a first track, and the read gap and the write gap of the first magnetic head form a right angle relative to the drive direction of the magnetic tape, and the read gap and the write gap of the second magnetic head form an oblique (&thgr;) angle relative to the drive direction of the magnetic tape.

Abstract: A plurality of disks and a spacer ring located between the disk are fitted around a hub of a motor and are sandwiched between a disk receiving portion provided at one end of the hub and a clamp member fixed to the other end of the hub. The disk receiving portion and the clamp member have a substantially equal outer diameter. The spacer ring has a larger outer diameter than that the clamp member. The outer peripheral radius rs of the spacer ring, the outer peripheral radius rd of each of the disks, the inner peripheral radius rh of the disk, and the outer peripheral radius rc of the disk receiving portion and clamp member has a relationship: (rc−rh)/rd<0.1<(rs−rh)/rd<0.15.

Abstract: A slider utilizes a triple-etch, high pitch-stiffness side rail ABS design. The slider is characterized by a relatively deep shallow recession at its leading edge, which maximizes the cavity area while at the same time increases the pitch angle to achieve DLC pad clearance as required by smooth media ABS designs. The slider ABS has a shallower recession at the trailing edge, which provides low gram-load sensitivity and low flying standard deviation. The slider ABS further presents a decreased sensitivity in response to altitude variations.

Abstract: A small magnetic disk cartridge comprising a housing, a rotatably disk-mounting hub, and a magnetic disk mounted on the disk-mounting hub. The disk-mounting hub is rotatably supported by the housing through a bearing equipped with inner and outer races that are mutually rotatable.

Abstract: A low stiffness, high torsion disk drive suspension having reduced gram load change after backbending and method includes a laminate of a metal layer, a plastic film layer and a plurality of conductors in which the spring portion, the base portion and/or the distal portion are provided with contiguous discontinuities that reduce the vertical stiffness of the suspension with only a low reduction in torsion, and that limit gram load changes by preventing stretching of the plastic film that would otherwise accompany backbending of the suspension.

Abstract: A disk device such as a magnetic hard disk drive. A disk is arranged inside a frame body. A cover is placed on the frame body, a gap is formed between a rim of the cover and the frame, and this gap is shielded by a sheet having an adhesive portion.

Abstract: A high density tape library includes a plurality of rectangular platforms mounted adjacent one another for movement in a plane, with tape cassette magazines mounted on the platforms. The platforms have depending guide and cam follower members for movement around a generally rectangular track under the control of a series of cams. At a cassette handling station, selected tape cassettes are shifted from a magazine to a tape drive.

Abstract: On a surface of a bottom pole, a write gap film and first magnetic material film having a high saturation magnetic flux density are formed, and the first magnetic material film is etched to remain a portion extending from an air bearing surface to a throat height zero reference position and a first non-magnetic film is formed in a removed portion. The first non-magnetic material film is polished to obtain a flat surface which is coplanar with a surface of the first magnetic material film. A second magnetic material film having a high saturation magnetic flux density is formed on the flat surface. The second magnetic material film, first magnetic material film, write gap film and bottom pole are partially removed by RIE using a mask formed on the flat surface in accordance with a given pattern to form a track pole having a double-layer structure consisting of bottom and to track poles and a trim structure in a self-aligned manner.

Abstract: A soft magnetic film has a composition represented by the formula FeXCoY&agr;Z wherein &agr; is at least one element selected from the group consisting of Rh, Pd, Pt, Ru, and Ir and X+Y+Z=100 mass percent. The ratio X/Y by mass percent of Fe to Co is in the range of 2 to 5, and the &agr; content Z is in the range of 0.5 to 18 mass percent. This alloy exhibits a saturation magnetic flux density of at least 2.0 T and high corrosion resistance.

Abstract: A head suspension assembly for a disk drive that inhibits thermal pole tip protrusion includes a slider assembly having a slider exterior surface including a trailing surface, a slider interior region that is defined by the slider exterior surface, and a write head having an electrically coupled write coil positioned within the slider interior region. The write coil generates heat during write operations of the disk drive. The slider assembly also includes a heat dissipater positioned substantially within the slider interior region. The heat dissipater is electrically isolated from the write coil, and has a thermal conductivity of at least approximately 50 W/mK.

Abstract: A cassette loading apparatus includes a holder arranged to hold a cassette, and a link mechanism arranged to support the holder with a plurality of levers in such a way as to allow the holder to ascend and descend between an ascended position and a descended position with respect to a chassis. The link mechanism includes a pair of levers which are disposed respectively on two opposite sides of the holder, and the pair of levers are formed integrally with each other through a connection part arranged above an upper part of the cassette.

Abstract: A head supporting device comprises a support arm and a head mounted to an underside surface at one end of the support arm. The support arm is disposed in a rotatable manner about a bearing unit in a radial direction of a recording medium as well as a perpendicular direction with respect to a writing surface of the recording medium, and the support arm is provided with resilient means for imposing upon itself with a thrusting force in a direction toward the recording medium. Because of this structure, a portion serving as the support arm can be formed with a material of high rigidity, the thrusting force of the resilient means upon the slider can be set freely as desired, and its resonance frequency can be increased, thereby providing the head supporting device with an extremely high resistance to shock, and high responsivity with capability of making a high speed access.

Abstract: A thin-film magnetic head for perpendicular magnetic recording comprising an auxiliary magnetic pole layer; a main magnetic pole layer; a conductive coil layer in a spiral shape which is disposed between the main magnetic pole layer and the auxiliary magnetic pole layer and which cross the magnetic circuit; and insulating layers electrically insulating the auxiliary magnetic pole layer and the main magnetic pole layer from the conductive coil layer. The insulating layers have flat surfaces formed at the sides further from the auxiliary magnetic pole layer, the front end portion of the main magnetic pole layer is provided on one of the flat surfaces, and the conductive coil layer is disposed under the main magnetic pole layer so that a part of the conductive coil layer opposes the front end portion of the main magnetic pole layer.

Abstract: A thin film magnetic head includes an upper and a lower magnetic pole layer extending forward from a central magnetic core within a thin film coil. A narrow upper and lower front magnetic pole piece are connected to the front ends of the upper and lower magnetic pole layer, respectively. The upper front magnetic pole piece extends rearward from its front end exposed at a medium-opposed surface. The lower front magnetic pole piece extends in a lateral direction along the medium-opposed surface by a lateral width larger than that of the upper front magnetic pole piece. The lower front magnetic pole piece extends rearward from the medium-opposed surface by a longitudinal length smaller than that of the upper front magnetic pole piece. The lower front magnetic pole piece serves to concentrate the magnetic flux at the front ends of the upper and lower front magnetic pole pieces.

Abstract: A slider is used for supporting a transducing head proximate a rotating disc. The slider includes a slider body having a disc opposing face bounded by a leading edge, a trailing edge, and first and second side edges. The slider body has a longitudinal axis. An air bearing surface is defined on the disc opposing face and the air bearing surface has a pad proximate the trailing edge. A trench is positioned adjacent to the pad with the trench being recessed from the air bearing surface at a step depth. A channel for flushing lubricant from the disc opposing face is positioned on the pad. The channel is recessed from the air bearing surface at a channel depth.

Abstract: Herein is disclosed a method and apparatus for reducing particle collection on a slider or gimbal tongue. The gimbal tongue is shaped so as to interact with airflow within a disc drive to direct particles away from the slider and gimbal tongue. The leading edge of the gimbal tongue overhangs the leading edge of the slider. As air current approaches such a geometry, a large pocket of slow moving, high pressure air is created just upwind of the slider. Thus, as particulate matter encounters this pocket, the matter is slowed and its momentum is partially dissipated. A vent is provided in the gimbal tongue. The vent permits an escape route for the particles to move to an area of lower pressure, located on the other side of the gimbal tongue.

Abstract: A magnetic disk device having a magnetic disk, a magnetic head slider with a magnetic head mounted thereon and having a first surface, a second surface, a third surface and a fourth surface which are formed sequentially from an adjacent side to the magnetic disk, and a gap of a magnetic head arranged on the first surface. A relation of d1<d2<d3 is established where d1 is a depth from the first surface to the second surface, d2 is a depth from the second surface to the third surface, and d3 is a depth from the third surface to the fourth surface. The magnetic head slider has a floating pitch attitude of at least 50 micro-radians with respect to the magnetic disk.

Abstract: A magnetic head slider having a plurality of surfaces which are formed sequentially from an adjacent side to a magnetic disk, and a slider rail surface, which is arranged near an air flow-out edge on a nearest surface of the plurality of surfaces including a long sideways rail surface on an air flow-in side and a lengthwise rail surface on an air flow-out side, has a magnetic head. An area of the long sideways rail surface is larger than an area of the lengthwise rail surface.

Abstract: A disc clamp assembly and method for balancing a spindle hub assembly within a disc drive utilizes a base piece, a balance ring retainer piece and a balance ring. The disc clamp base piece is positioned on the top surface of the rotatable spindle hub to secure a disc stack to the spindle hub. The balance ring retainer piece is attached to the top surface of the base piece and defines a peripheral rim for accepting a balance ring. The balance ring has a predetermined mass to modify the center of gravity of the spindle hub assembly toward the central axis of rotation for the spindle hub.

Abstract: A single pole type magnetic head has a writing head including a main pole and an auxiliary pole, and a reading head including a read element, wherein the main pole has a recess on the trailing side of its air bearing surface. When recording is performed on a perpendicular medium by using the single pole type magnetic head, the magnetic field distribution on the trailing side of the main pole air bearing surface is linearized, whereby the magnetic reversal is determined. As a result, a bit is recorded without curving the shape of magnetic reversal. Accordingly, when the bit is read, the magnetic reversal width appears to be large, so that the half-width of a solitary wave is increased, and at the same time, the recording track width is narrowed with an increase in linear recording density.