Abstract: In a casing 4 formed into a cylindrical container, there are magnetic disc media 6 installed rotatably at a high rotational speed, magnetic heads 5 in contact with recording surfaces of the magnetic disc media 6, fibrous pads 11 projecting radially inwardly from a circumferential wall 2 of the casing 4, impregnated with lubricant and disposed in contact with the recording surfaces of the magnetic disc media, and a porous material 12 disposed in the inner surface of the circumferential wall 2 and in contact with the fibrous pads 11. The lubricant L that has flown from the recording surfaces to the peripheral portion is absorbed to the porous material 12 due to a centrifugal force generated by the rotation of the magnetic disc media 6 moves to the fibrous pads 11 by a capillary action to be fed again to the recording surfaces.

Abstract: The present invention relates to a miniature hard disk drive system including a substantially sealed enclosure housing a head-disk assembly and a printed circuit board assembly. The head-disk assembly includes a rotary drive motor and an actuator assembly which pivotally supports and positions one or more read-write head flexure assemblies. In one aspect of the invention, the drive system includes two miniature hard disks having an outer diameter of between 40 mm and 50 mm and has a total thickness not exceeding 10.5 mm. In another aspect, the printed circuit board assembly has first contact pads and the head-disk assembly has a flexible circuit assembly with a first flexible portion connected to the actuator assembly for electrical connection to the read-write heads and with a second flexible portion having second contact pads.

Abstract: The present invention accommodates, in an integrated suspension assembly for a magnetic disk storage system, tolerances in the lead and slider position in a manner to maintain gimbal integrity, minimize static attitude variation and reduce stress build up in the lead. In one aspect of the present invention, the nominal lead position and slider position are chosen such that the distance between them in an overlapping interference manner is no more than (a+b), the sum of the extreme tolerance a of the lead position and extreme tolerance b of the slider position. This is to ensure at least line to line contact between the slider and the leads, in an interference type contact configuration. In another aspect of the present invention, the ends of the leads are coated with a layer of solder material which can be reflowed to form a solder joint bonding the contacting leads to the slider.

Abstract: A method and arrangement for mounting a rotary actuator bearing cartridge between a disk drive base and cover, are disclosed. The mounting arrangement minimizes any possible deformations to bearing sleeve as well as any effects to bearing preload and friction while enabling a top down assembly.

Abstract: Disclosed is a lubricating apparatus which can compensate for the radial load and the thrust load of the shaft. The lubricating apparatus includes a housing formed at an inner portion thereof with a pair of lubricant containing grooves, a journal bearing inserted into the housing, and lubricating pads having a lubricant therein. The lubricating pads are inserted into the lubricant containing grooves. A head drum assembly for a video cassette recorder is also disclosed. The assembly has a lower drum, an upper drum, a motor for generating a driving force, a shaft for transferring the driving force of the motor to the upper drum, and a bearing rotatably supporting the shaft. By compensating the radial load and thrust load of the shaft, jittering and wow-fluttering can be prevented while recording a screen information on a magnetic tape or reproducing the screen information from the magnetic tape.

Abstract: A head suspension has an integrated self-shielding trace conductor array for supporting and electrically interconnecting a dual element read/write head to electronic circuitry in a disk drive. Write traces are placed proximately to the read traces and are grounded during data reading operations in order to serve as a read trace electrostatic shield during the data reading operations.

Abstract: The present invention provides a new tab structure for a head suspension assembly in a magnetic storage system. In the prior art method of assembly, a harness temporarily holds a wire assembly. The present invention eliminates the need for the harness, thereby reducing the number of parts and steps as well as improving productivity and quality. A flexure of a suspension assembly must be manufactured very precisely. The present invention provides a new tab structure either integral with or separate from the flexure. Wires bridge over to an extension on the tab structure at a predetermined distance from the end of the load beam. Positioning holes, using the extreme flatness of the tab structure, align the wires with the bonding pads of a head. The suspension assembly is subsequently bonded to the head, and the unwanted tab structure is removed to complete the head suspension assembly.

Abstract: A rotor rotating integrally with the rotary cylinder is rotatably fitted to a supporting member. A conductive member is arranged on the outer peripheral surface of this rotor. A conductive connecting terminal connectable with the power generating part is arranged at one end of the supporting member and a conductive brush for feeding voltage from the power source generating part to the electronic circuit through the above mentioned conductive member is arranged at the other end of the supporting member. By fitting the supporting member to the chassis without using lead wires and soldering, the power source voltage from the power generating part will be able to be fed to the electronic circuit within the rotary cylinder and the power feeding apparatus will be able to be very easily fitted to the rotary cylinder.

Abstract: A magnetic recording/reproducing apparatus applicable to a small camcorder is provided, in which tape guide devices are interlocked with a single main slide member and a hard circuit board is used. Therefore, it is easy to assemble and disassemble the apparatus.

Abstract: A magnetic disk storage unit has a sealing container accommodating at least a magnetic disk and at least a magnetic head and being provided with at least an air hole through which air pass between interior and exterior to adjust a pressure of an internal gas within the sealing container, wherein the air hole is provided with a gas adsorbent comprising carbon fibers made from a high polymer having cyano groups.

Abstract: A non-magnetic substrate material Fe.sub.2 O.sub.3 as a major component and 0.1-5 weight %, based on the total amount of the material, of at least one of Nd.sub.2 O.sub.3 and Gd.sub.2 O.sub.3. By adding Nd.sub.2 O.sub.3 and/or Gd.sub.2 O.sub.3, the maximum size of the grains in the material is regulated to 5 .mu.m or less. This improves the CSS characteristics of a flying-type magnetic head made thereof and makes the flying height low and constant.

Abstract: The invention relates to a switching device in an auto-reverse deck for a magnetic-tape-cassette apparatus, comprising a drive mechanism which is pivotable in a pivoting range between a first and a second reel-disc wheel (51, 52), by means of which drive mechanism the first reel-disc wheel (51) is drivable in a first operating position of the switching device for a first tape-transport direction and the second reel-disc wheel (52) is drivable in a second operating position of the switching device for a second tape-transport direction, the drive mechanism acting upon a movably supported actuating lever (5) during the pivotal movement between the two operating positions and a pivotal lever (44) being provided which carries a pivotal wheel (50), and the pivotal lever (44) being coupled to an intermediate wheel (41), particularly by means of a friction coupling (45), which intermediate wheel meshes with the pivotal wheel (50).

Abstract: A rotating magnetic storage device is shown wherein the transducer and media are separated during operation by a thin film of low viscosity liquid lubricant that is recirculated from a reservoir within the head-media enclosure. Lubricant recirculation can be effected by capillary action using a wick, mechanical pumping and metering or distillation techniques. As compared to devices using air bearing separation, the transducer carrying slider has very small bearing surfaces which may be in the form of narrow rails or small depending foot elements. This enables fly heights of 2 microinches using a film of one micron thickness.

Abstract: A recording/reproducing apparatus includes a plurality of toroidally arranged housing sections housing a plurality of disc cartridges in a stacked condition. Each housing section has apertures on its opposite lateral sides for taking out or housing the disc cartridges in the fore-and-aft direction parallel to the stacking direction of the disc cartridges. A lift mechanism supports and lifts the recording/reproducing units in the stacking direction of each of the recording/reproducing units. A transfer mechanism lifted by the lift mechanism along with the recording/reproducing units is adapted for taking out or housing the disc cartridges housed within the housing sections via one of the apertures of one of the housing sections facing each recording/reproducing unit.

Abstract: A read transducer assembly includes a giant magnetoresistive structure in magnetic contact with a multilayered biasing structure that includes layers of antiferromagnetic material interleaved with layers of soft magnetic material. The magnetic exchange coupling between the antiferromagnetic layers and the soft magnetic layers results in a bias field to the giant magnetoresistive structure that reduces or eliminates side reading by the read transducer assembly. The multilayered biasing structure is located adjacent to and in magnetic contact with either the end or the top surfaces of the giant magnetoresistive structure.

Abstract: An automated cartridge handling system or library (20, 20') for storing cartridges (22) of information storage media comprises a cartridge holder (26); a tape drive (30) movably mounted with respect to the cartridge holder; and, a transport system (40) for transporting the tape drive (30) in a drive transport path (42) between a unloaded position and a cartridge loaded position. The cartridges (22) remain stationary in the library while the tape drive is transported between the unloaded position and the cartridge loaded position. The cartridge holder library has a plurality of apertures (70) which receive cartridge holders or spines (80). To retain the cartridge (22) within the spine, each spine has resilient cartridge retaining fingers (100) formed in its interior cavity (90) for engaging a notch (104) on the cartridge. Each spine is provided with stabilization flanges (112) for stabilizing the cartridge.

Abstract: A memory storage module for storing and accessing information which includes a flat storage medium having an X-axis and a Y-axis. A plurality of read/write heads are coupled to a head array assembly which is capable of motion along the X-axis. The head array assembly positions the heads adjacent to the medium. An X-axis motor is coupled to the head array assembly and causes the heads to undergo reciprocating substantially linear motion along the X-axis of the medium. A Y-axis motor creates linear motion between the heads and the medium along the Y-axis of the medium. The heads are controlled to store or access information on the medium as the heads move across the X-axis of the medium. The Y-axis motor moves the heads from track to track along the Y-axis of the medium. The Y-axis motor can be connected to move either the medium or the head array assembly along the Y-axis.

Abstract: A spin valve magnetoresistive (MR) read sensor is provided wherein the free and pinned layer magnetization are perpendicular to each other under quiescent conditions and the current flowing in the free MR layer is oriented to flow at a substantially 45 degree angle with respect to the free layer magnetization. The flow of the current at the 45 degree angle with respect to the free layer magnetization causes the AMR effect which is present in the free MR layer to be added to the spin valve sensor GMR effect and increases the overall magnetoresistive effect by about 25% to 33%.

Abstract: In a thin film magnetic disk, a micro projections are formed on a substrate in a circumferential direction. A height of the micro projections is several nm to several tens of nm and a density of the micro projections is several hundred pcs/mm to several tens of thousands of pcs/mm.sup.2. With this arrangement, a magnetic disk fulfilling a head floating characteristic of a narrow space and further fulfilling a mechanical anti-sliding characteristic such as a contact start-stops characteristic and a head stickiness and the like is provided so that high reliability is attained. In the thin film magnetic disk, a bearing ratio curve of a sectional shape measured in a radial direction of the textured substrate has a bearing ratio of 0.1 to 10% at the surface layer (a cutting height of 5 to 10 nm). In this way, a pressure receiving area under a sliding of the magnetic head is increased.

Abstract: A floppy disk drive having a drive lever for driving a floppy disk. The drive lever is made from a low-cost metal plate and is elastically supported by a coil spring, thereby reducing the manufacturing cost. The drive lever has an arcuate shape which is bent inwardly in such a manner that an outward force of the drive lever is increased, thereby reducing friction and abrasion of the driving pin. The floppy disk drive has a rotor case of a driving motor, and a drive lever disposed at an inner bottom portion of the rotor case. The drive lever has a first end at which the driving pin protrudes through an opening in the rotor case, and a second opposite end which is secured to the case by a screw surrounded by the coil spring. Due to the coil spring, the drive lever offers elastic resistance when the driving pin is engaged in an engagement hole of a floppy disk hub. The drive lever is straight or has an arcuate shape which is bent inwardly.