Abstract: Multi-channel magnetic head having a high channel density, provided with a head face (1) which extends in a first direction (I) in which a record carrier is relatively movable with respect to said magnetic head, and in a second direction (II) transverse to the first direction. The magnetic head has a structure of layers which, viewed in the first direction, are situated one on top of the other and extend substantially in the second direction and in a third direction (III) transverse to the first and the second direction. Viewed in the second direction, adjacent magnetoresistive sensors (S1, S2, S3) are distinguishable in the structure, each comprising a magnetoresistive measuring element (5), a first magnetic element (7) and a second magnetic element (9).

Abstract: An integrated suspension for a hard disk drive is formed as a single-piece flat assembly. The design eliminates the need for mechanical reinforcement such as flange forming, and requires no additional weld processing to form the functional portion of the assembly. A partial etch process is used to reduce local thicknesses in the gimbal and hinge areas to reduce the overall stiffness of the suspension. The proximal end structure of the suspension is also built by partial etching to achieve higher natural frequencies. The suspension design also incorporates built-in load/unload features and two-sided, opposite-facing limiters to limit excessive slider displacement during the manufacturing process, loading/unloading, and non-operational shock environments.

Abstract: A disk playback apparatus has a lower chassis unit carrying a stack of disk holders. A stage unit carries major components of the disk playback apparatus including side select plates for selectively lifting or lowering the disk holders, a drive base unit for playing back a disk, a horizontal driving gear mechanism for moving the drive base unit into a space which is formed as a result of the selective upward or downward movement of the disk holders, and a loading roller for loading and ejecting a disk. The stage unit is moved up and down in accordance with the position of a selected disk holder, by the power of a first motor, through the actions of a gear mechanism, mode pate and slide plates.

Abstract: A spindle motor for use in a disk drive includes a spindle motor base. The spindle motor further has a spindle motor hub rotatably attached to the spindle motor base. The spindle motor further has a motor shaft in mechanical conmmunication with the spindle motor base. The spindle motor further has an inner ball bearing set surrounding the motor shaft. The inner ball bearing set has a first inner race and a first outer race. The first inner race is attached to the motor shaft. The spindle motor has an outer ball bearing set surrounding the inner ball bearing set. The outer ball bearing set has a second inner race and a second outer race. The second inner race is fixed relative to the first outer race.

Abstract: An optical disk drive which reduces the number of motors used for drive operation is thereby simplified while shock resistance, vibration resistance, and productivity are improved. A turntable, a first motor for turntable drive, an optical pickup and drive mechanism, are provided on a drive base and a separate traverse base that floats on the drive base. A loading drive mechanism drives a disk loading mechanism. A second motor can be driven in forward and reverse to supply drive power to the loading drive mechanism and a pickup drive mechanism. A drive power transfer path switching mechanism is used to switch the path through which drive power from the second motor is transferred to supply power to the loading drive mechanism and pickup drive mechanism.

Abstract: The objective of this invention is to provide a yoke-type magnetic head and a magnetic recording device in which Barkhausen noise is low. It is possible to induce a magnetic flux efficiently within a magnetic head by using a granular magnetic film that exhibits both soft magnetic properties and a high resistance, which suppresses any shunt of the flow of the sense current into the magnetic yokes, thus preventing any deterioration insensitivity. Since this means that eddy currents can be suppressed, even during use in high-frequency regions, the frequency response characteristics are also improved. In addition, since the magnetic grains within the granular magnetic film are nano-sized, the dimensions of magnetic domains therein are also miniaturized to match that size, and thus there is also substantially no movement of the magnetic domain walls and this miniaturization also makes it possible to suppress the generation of Barkhausen noise.

Abstract: A disk drive suspension and method for design of a disk drive suspension where the suspension has a load beam with a rigid portion and a flexure comprising a frame attached to the load beam rigid portion at a welding point. The frame has left and right outriggers and a tongue between the outriggers and cantilevered from the frame at a flexure offset rail. The tongue has a free end for carrying a slider in gimballing relation in operative proximity to a disk.

Abstract: A virtual space communication system includes a virtual space management computer which manages information regarding a virtual space, a plurality of client computers each of which receives information regarding the virtual space from the virtual space management computer and generates communication information used in the virtual space, each of the plurality of client computers having an object state changing unit for changing a state of an object included in the virtual space, and a communication management computer which intermediates communications regarding communication information and information representing change of a state of an object among the plurality of client computers sharing the virtual space. The virtual space communication system further comprises a changing unit for, when a state of an object is changed in one of the plurality of client computers, changing information of the virtual space managed by the virtual space management computer based on a changed state of the object.

Abstract: In a case in which hydrobearings are used in the tape guides of a magnetic tape device, the guide surface for guiding a magnetic tape is formed by a plurality of circular arc surfaces. In accordance therewith, the contact surface area of a magnetic tape and tape guide becomes smaller, making it possible to prevent the sticking of a magnetic tape to tape guide.

Abstract: A disk device includes a head part, an actuator part for moving the head part to an objective position, and a control part for controlling the actuator part, wherein the control part makes the actuator part shift to a reverse direction of the movement direction of the head part before a settling action of the head part starts being implemented.

Abstract: A negative pressure air bearing slider includes a pair of front rails having a predetermined air inlet passage interposed therebetween at the front side of the slider where air enters, a negative pressure rail disposed at the rear of the front rails and forming air outlet passages connected to the air inlet passage, and forming a negative pressure space where negative pressure is generated according to the flow of air at the rear thereof, and a rear rail disposed at the rear of the negative pressure space, where a magnetic head is installed. In the slider, a stepped portion protruding toward the air outlet passages is formed at the negative pressure rail.

Abstract: The leak magnetic field generated from the upper core layer toward the upper magnetic pole layer can concentrate in the vicinity of the gap layer to suppress side-fringing from generating while increasing the overwrite, by making the saturation magnetic flux density Bs1 of the upper magnetic pole layer to be higher than the saturation magnetic flux density Bs2 of the upper core layer, and by directly bonding the upper core layer on the upper magnetic pole layer.

Abstract: A pivot bearing cartridge for use in a head stack assembly. The pivot bearing cartridge is provided with a pivot bearing cartridge base. The pivot bearing cartridge is provided with a pivot shaft in mechanical communication with the pivot bearing cartridge base. The pivot bearing cartridge is provided with an inner ball bearing set surrounding the pivot shaft. The inner ball bearing set has a first inner race and a first outer race. The first inner race is attached to the pivot shaft. The pivot bearing cartridge is provided with an outer ball bearing set surrounding the inner ball bearing set. The outer ball bearing set has a second inner race and a second outer race. The second inner race is fixed relative to the first outer race.

Abstract: A magnetoresistive transducer includes a substrate and a magnetoresistive assembly. At least one bleed resistor couples the magnetoresistive assembly to the substrate. The bleed resistor has a relative large electrical resistance and provides a discharge path for accumulated charge. The arrangement effectively prevents electrostatic discharge damage to the sensor.

Abstract: In a disk cartridge including a cartridge housing (22), an optical disk (21) and a shutter mechanism (28), a butt portion (71a) of at least one shutter member of a pair of shutter members (50), (51) includes a recess portion (75) into which the other butt portion (72a) is inserted. A space produced between the shutter members (50), (51) of the shutter mechanism (28) comprising the first shutter member (50) and the second shutter member (51) can be reduced as much as possible. The disk cartridge is made dustproof by suppressing dusts or the like from entering a disk compartment in which a disk-like recording medium is accommodated.

Abstract: In one aspect, an inductive transducer is disclosed having a leading pole layer and a leading pole tip, with the pole layer being further removed than the pole tip from a media-facing surface. In another aspect, an inductive transducer is disclosed having a magnetic pedestal disposed between a leading pole layer and a leading pole tip, with at least one of the pedestal and pole layer being further removed than the pole tip from a media-facing surface. In another aspect, a leading pole layer or pedestal may have a surface that slopes away from the media-facing surface with increasing distance forward from the leading pole tip.

Abstract: A read/write head includes a bottom shield and a shared shield. The shared shield includes a first domain and a plurality of closure domains. The read/write head also includes a magnetoresistive sensor deposited adjacent an air bearing surface between the bottom shield and the shared shield. The magnetoresistive sensor includes a magnetoresistor aligned with the first domain. Non-magnetic material separates the magnetoresistive sensor from the bottom shield and the shared shield. The shared shield includes a shaped feature that defines an unambiguous direction of magnetization for the first domain.

Abstract: A trigger mechanism is provided for triggering an eject device of an electronic equipment with a front panel door. The eject device ejects a tray device, movably seated within the space of the electronic equipment, out of the electronic equipment when triggered. The trigger mechanism cooperates with the front panel door to trigger the eject device. The trigger mechanism works to trigger the eject device when a predetermined displacement of the front panel door form a normally closed position takes place. According to the invention, user can eject the tray device of the electronic equipment only by pressing the front panel door of the electronic equipment such that mistaken pressing of another functional button set on the front panel of the electronic equipment and possible cut of user's hand can be prevented.

Abstract: A disc changer comprises a disc storage device, a disc reproduction device and an elevation device. The disc storage device is capable of storing discs to be arranged in a apparatus main body in a stacked state. The disc reproduction device has a carriage chassis on which the first components comprising a turntable and a pickup are mounted. The elevation device is capable of elevating the disc reproduction device in the stacking direction of the disc stored in the disc storage device. A force application device is provided at a position in abutment with the carriage chassis so as to apply force to the carriage chassis, when the disc reproduction device is moved to a standby position by the elevation device. The force is applied in the opposite direction to a movement direction of the disc reproduction device toward the standby position.

Abstract: A magnetic head includes a dielectric member, a coil and a heat conductor. The dielectric member has an obverse surface held in facing relation to a data storage disk. The coil generates a required magnetic field. The coil is provided in the dielectric member or in the obverse surface of the dielectric member. The heat conductor absorbs heat generated by the coil. The heat conductor has a heat conductivity which is higher than that of the dielectric member. The heat conductor has a surface which is at least partially irregular.