Matches 301 - 350 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
5872676 Method and apparatus for positioning a dual element magnetoresistive head using thermal signals  
The present invention is a method and apparatus for positioning a dual element magnetoresistive (MR) head relative to a storage medium in a storage device. The MR head has first and second MR...
5870265 Magnetic recording disc having an idle fly zone and tapering transition zones on each side thereof  
A magnetic disc drive storage system includes a magnetic storage disc and a proximate recording head. The proximate recording head is used for proximity reading and writing of information on the...
5870264 Method and arrangement for significantly increasing the lifetime of magnetic disk storage devices  
The invention permits extension or elimination of the flying edge on disk surfaces of data storage devices with rotating disks to stabilize the gliding behavior of the read/write heads. The method...
5867353 Off-track PES calibration for a magneto-resistive element  
A method and apparatus for creating a position error signal (PES) voltage v. track distance curve for the head of a hard disk drive. The disk has a dedicated track which contains a plurality of...
5864534 Optical data storage disc having low-profile hub  
An optical data storage disc comprising a disc-shaped substrate and a centrally-located magnetizable hub. The disc has a central bore configured to receive a drive pin from an optical disc drive....
5863631 Perpendicular magnetic recording medium and magnetic recording device using the same  
A perpendicular magnetic recording medium wherein a perpendicular magnetic film is formed on a substrate or a nonmagnetic film, and the perpendicular magnetic film contains Co and Cr, the content...
5850329 Magnetic recording device components  
A magnetic memory recording component comprising at least a silicon carbide ceramic outer surface. If the silicon carbide ceramic outer surface has a depression in the surface thereof, the maximum...
5847907 Recording/reproduction apparatus with an integrated inductive write, magnetoresistive read head  
In a recording/reproduction apparatus equipped with an integrated head comprising a thin film inductive write element and a MR read element and mounted on a head slider which is arranged to be...
5845195 Digital radio frequency communications device for insertion into floppy diskette drive  
The present invention relates to a wireless apparatus for transferring information between computers. The communication device uses a diskette that transmits and receives information by using radio...
5838516 High/friction/lower clamping force mechanism for discs in a disc drive  
An improved disc clamping system for the elements of the disc stack in a disc drive to increase resistance to radial shifting of the disc stack elements. The increased resistance to radial shifting...
5838514 Method and apparatus for calibrating a thermal response of a magnetoresistive transducer  
A method and apparatus for calibrating a thermal response of an MR element spaced apart from a surface of a data storage disk is disclosed. A calibration feature, such as a depression, is provided...
5835305 Magnetic disk apparatus employing liquid bearing type or physical contact type magnetic head slider  
A magnetic storage apparatus includes a substantially non-flexible magnetic recording medium, a magnetic head slider having a reading/writing element mounted therein and liquid lubricant provided...
5828536 Magnetic disk and magnetic disk device in which control data section of disk has structural relationship to slider and/or data section  
This invention provides a magnetic disk and a magnetic disk device having the magnetic disk, which is capable of suppressing the floating variation of the head slider on the magnetic disk. The...
5825596 Hard disk drive  
A hard disk drive includes a magnetic disk used as a magnetic recording medium, and a magnetic head for applying magnetic fields to the disk to record data and for detecting magnetic fields from...
5825591 Frictionally sliding head magnet disk apparatus  
The present invention relates to a magnetic disk unit of a high memory capacity wherein a magnetic head and a magnetic disk with a lubricant layer formed on the surface thereof are allowed to...
5824387 Magnetic disc with carbon protective layer having regions differing in hardness  
A magnetic disc for use in a disc drive data storage system is disclosed. The magnetic disc includes a layer of magnetic material deposited on a substrate and a carbon overcoat layer deposited on...
5822163 Magnetic disk having surface lubrication layers of different thickness  
A magnetic disk for a disk drive includes a landing zone with a first lubrication layer having a first thickness located at an inner periphery on a surface of the magnetic disk. A data zone with a...
5820964 Magnetic disk, and magnetic disk apparatus  
The present invention is aimed at providing a magnetic disk and a magnetic disk apparatus both of which have a high performance lubricating film which makes continuous sliding endurance and low...
5815343 Magnetic recording medium, process for producing the same and magnetic recording system  
A magnetic recording medium includes a non-magnetic substrate, and a magnetic layer provided on the non-magnetic substrate. The value of the product Br 1 δ of the residual flux density Br 1 of...
5815342 Perpendicular magnetic recording/reproducing apparatus  
Disclosed is a perpendicular magnetic recording/reproducing apparatus comprising perpendicular magnetic recording media and magnetic heads. Each perpendicular magnetic recording medium has a...
5815333 Magnetic disc with a flat RAM area and disc device  
A magnetic disc having a ROM area and a RAM area which are separated. The ROM only plane and the RAM only plane are separated on the magnetic disc.
5809520 Interchangeable cartridge data storage system for devices performing diverse functions  
A system for exchanging digital data among a plurality of hand-held computer devices. Digital signals are written by a first hand-held device to a mini-cartridge that mini-cartridge is...
5800931 Magnetic recording medium with a MgO sputter deposited seed layer  
The present invention provides a longitudinal magnetic recording media having a substrate, a sputter deposited MgO seed layer, a Co or Co alloy based magnetic layer and an underlayer disposed...
5798164 Zone textured magnetic recording media  
Magnetic recording media are provided having separately textured data and read/write head landing zones. Separating these zones on the recording surface allows independent optimization of the...
5790433 Method for controlling laser power in a texturing process  
A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a disk for a hard disk drive. Disks are moved into and out of the texturing process in...
5789062 Magnetic recording medium  
In a magnetic recording medium in which light is applied to a magnetic head-tracking optical recess and a data track between these recesses so as to effect a tracking of a magnetic head in...
5786958 Head tracking servo pattern  
A servo pattern for controlling a head position has a first pattern in which two frequency signals having respectively different frequencies are arranged alternately in the width direction of a...
5777832 Disk having stress relieving zones for use with a disk clamping device in a hard disk drive  
A disk and a disk clamp device in a hard disk drive are disclosed. The disk of this invention has a stress and strain relief section, which effectively intercepts the spread of clamping...
5776577 Magnetic recording disk having a lubicant reservoir on the inner circumferential surface  
In a magnetic recording apparatus, a magnetic recording medium has a disk body and a lubricant covering not only the opposite major surfaces but also the inner circumferential edge of the disk...
5774313 Magnetic disk which reduces deterioration in regenerated signals due to optical servo grooves  
A magnetic disk has optical servo grooves formed at specified intervals along data tracks so that variations in reflected light of light applied to the grooves are detected so as to allow a...
5768076 Magnetic recording disk having a laser-textured surface  
A data recording disk having at least part of the data storage surface textured according to a process for creating a "distant bump array" surface texture for reducing stiction. The texturing...
5768075 Disk medium w/magnetically filled features aligned in rows and columns  
A disk medium includes a substrate and a designed topography of individually magnetizable features formed on the surface of the substrate. At least a portion of the topography is formed from an...
5766718 Longitudinal magnetic recording medium and apparatus  
It is disclosed that a longitudinal magnetic recording medium and apparatus has recording sections having longitudinal magnetic films magnetically isolated in a recording direction. The...
5759681 Magnetic recording medium and magnetic recording system using the same  
A magnetic recording system includes an intermediate layer arranged between adjacent ones of a plurality of magnetic layers constituting a magnetic recording medium, the magnetic recording medium...
5748421 Magnetic recording disk  
A magnetic recording disk, for recording information, has a circular-shaped non-magnetic support formed with a plurality of tracks extending in a circumferential direction, each track of the...
5747136 High-density magneto-optic disk and method of manufacturing the same  
A magneto-optic disk has a readout layer formed of a bismuth-substituted garnet having a chemical composition represented by Bi x R 3 -x M y Fe 5 -y O 12 and a recording layer formed of a...
5739994 Optimally banded disk for use with multiple frequency channel  
A memory device using at least one disk is disclosed the memory device uses a banded disk. The disk is optimally banded for use in a multiple frequency zoned disk storage device. The allocation of...
5738927 Perpendicular magnetic recording media and magnetic recording device  
A film 12 with perpendicular magnetic anisotropy and a protective film 13 are formed over a single-crystal substrate 11. This substrate is made of either a single crystal having a hexagonal crystal...
5737229 Method of texturing a magnetic recording medium for optimum skewness and kurtosis to reduce friction with a magnetic head  
A low friction non-gaussian surface is disclosed which has a positive skewness value and a kurtosis value of three or greater which minimizes static and kinetic friction and resultant wear. In a...
5737159 Magnetic disk and its manufacturing method  
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...
5731923 Medium recording apparatus and medium reproducing apparatus, and medium recording method and medium reproducing method, and medium used therefor  
In a recording and reproducing apparatus capable of continuously recording to and reproducing from a plurality of media, the recording and reproducing apparatus includes a recording and reproducing...
5725931 Constrained layer damper with slit(s) and/or cutout(s)  
The present invention provides a constrained layer damper having slits and/or cutout(s) therein, which provides improved vibration damping performance. The constrained layer damper of the invention...
5723227 Magneto-optical recording medium and reproducing method for information recorded on the medium  
A magneto-optical recording medium capable of performing magnetically induced super resolution reproduction by perfectly masking a mark adjacent to a mark to be reproduced. The magneto-optical...
5723198 Multi-layered magnetic recording medium and magnetic recording system employing the same  
In a magnetic recording system including magnetic recording media, a rotation driving unit for driving these magnetic recording media, read/write magnetic heads, driving apparatus for driving these...
5723033 Discrete track media produced by underlayer laser ablation  
The invention provides discrete track magnetic recording media and methods for their fabrication. A discrete track servo pattern is imposed on an underlayer, over which a magnetic recording layer...
5712014 Metal matrix compositions for substrates used to make magnetic disks for hard disk drives  
A rigid disk substrate for a magnetic recording disk is formed of a boron carbide-metal matrix composite having a density ranging from 2.5 to 2.8 g/cm 3 and a composition ranging from...
5709764 Method for assembling a disc-shaped recording medium  
A method and apparatus for assembling a hub for magnetically chucking an optical disc on a disc table of a recording/reproducing apparatus under a force of magnetic attraction includes an assembly...
5695864 Electronic device using magnetic components  
In the present invention, electrons flow through a free or excitable magnet, or reflect from it, to make its magnetization respond. To accomplish this, the spin vectors of the flowing electrons are...
5690838 Magnetic recording medium and process for producing same  
A magnetic recording medium excellent in corrosion resistance and rubbing reliability is realized by forming a number of concavities and convexities on the surface of a protective layer formed on a...
5686166 Magnetic recording medium having specified base film surface characteristics  
The present invention relates to a magnetic recording medium including a base film made of an aromatic polyamide or an aromatic polyimide, and a magnetic recording layer formed on one surface of...
Matches 301 - 350 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >