Matches 151 - 200 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6509108 Magnetic recording medium and a magnetic disc apparatus, with a CRP or CrMoP reinforcing coat layer  
A magnetic recording medium has a nonmagnetic substrate having applied thereon through a nonmagnetic underlayer a magnetic recording layer composed of a magnetic metal material. The nonmagnetic...
6504663 Disk apparatus and disk medium having a ramp loading mechanism  
A disk apparatus having a ramp loading mechanism. A disk medium on which second servo patterns have been written in a landing area on the medium at a finer interval than that of first servo...
6493184 Dedicated disk burnishing zones for burnishing magnetic recording sliders  
A magnetic data storage system includes at least one storage disk having a data surface of concentric radial tracks and at least one burnishing track, a drive for rotating the disk; and a slider...
6490137 Information equipment with polymer film in bearing and disk  
A rolling bearing is used for supporting a rocking mechanism or a rotating mechanism, and a film comprising a fluorine-containing polymer having a functional group(s) under a fluidizied state or a...
6487043 Cross texture head disc interface  
A disc drive is disclosed that includes textured features on the disc surface and a slider. The slider texture can include one or more features oriented in a first direction, and the disc can...
6483666 Magnetic media with texturing features formed by selectively non-uniform laser beams  
Magnetic data storage disks, particularly along dedicated transducing head contact regions, are laser textured according to a process in which beam shaping optical components impart an elliptical...
6475599 Substrate for information recording media  
A substrate for information recording media is disclosed which has optimized shapes of surface recesses and protrusions and thereby contributes to a reduction in flying height and causes neither...
6469853 Storage media having a wide servo band and high data format efficiency and a storage using the same  
A magnetic disk including a plurality of servo sectors and data sectors along a circumference thereof includes full-format servo sectors which are successively arranged in a radial direction of the...
6466385 Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track  
A magnetic disk apparatus has: a head ( 2 ) that performs data recording and playback while moving relative to a magnetic disk ( 26 ) rotating at the prescribed speed; an actuator ( 3 ) that...
6462916 Magnetic disc apparatus  
The present invention improves the reproduction resolution in a magnetic disc apparatus of the double layered perpendicular magnetic recording method. A perpendicular magnetic recording medium 20 ...
6459547 Slider with pads and textured landing zone for disc storage system  
A disc storage system includes a rotating disc and a transducer. The transducer is carried on a slider which is supported by an armature. The armature is used to move the slider radially across the...
6456213 Digitizing readback waveform for testing hard disc drives  
Information handling systems, disc drives, and methods for digitizing a readback waveform for testing a hard disc drive are disclosed. An information. handling system, such as a disc drive,...
6433964 Method of making high density recording medium having a non-magnetic, metallic layer on a flexible substrate  
Disclosed is a method of making a high density recording medium having a non-magnetic metallic layer on a flexible substrate, wherein said high density recording medium can be used as a floppy disk...
6424488 Peripherally extending disc ring to limit disc deflection and to provide disc stack balancing  
Apparatus and method for balancing and limiting deflection of a disc of a disc drive. A disc stack comprises a spindle motor hub rotatable about a central axis, a disc mounted to the spindle motor...
6421195 Magnetic disk media with patterned sections  
A magnetic disk medium patterned linear magnetic channels in a radial direction of the disk is employed in a magnetic disk drive unit. The magnetic channels are patterned by high-resolution...
6416839 Magnetic recording medium with laser-formed differential zone lubrication  
Stiction failure of a magnetic recording medium is reduced by forming a lubricant topcoat having a first thickness over the landing zone greater than a second thickness over the data zone, with a...
6413608 Seed layer and underlayer with high and low oxygen concentration portions for hand disk magnetic recording medium on a glass substrate  
The thin film magnetic disk of the present invention includes a non-metallic substrate having a seed layer deposited on the substrate, an underlayer deposited upon the seed layer composed of a...
6410133 Magnetic recording disk, method of the magnetic recording disk and magnetic recording apparatus  
A magnetic recording medium includes a non-magnetic substrate, an inorganic compound layer that is formed on the substrate and which contains a crystalline first oxide and a second oxide, and a...
6407892 Magnetic recording and reading device  
A magnetic recording and reading device which has a transfer rate of not less than 50 MB/s and which includes a magnetic recording medium having an absolute value of normalized noise coefficient...
6404605 Magnetic recording and reading device  
A magnetic recording and reading device which has a transfer rate of not less than 50 MB/s and which includes a magnetic recording medium having an absolute value of normalized noise coefficient...
6404590 Magnetic media with randomly positioned texturing features  
A magnetic data storage medium includes a dedicated transducing head contact zone for engaging an air bearing slider, primarily when the disk is stationary. The contact zone is textured with an...
6396661 Magnetic disk drive capable of preventing stiction of magnetic head  
A magnetic disk drive includes a magnetic recording medium rotatably mounted in a housing, a magnetic head slider having an electromagnetic transducer for reading/writing data from/to the magnetic...
6395368 Glass-ceramic substrate for a magnetic information storage medium  
A glass-ceramic substrate for a magnetic information storage medium having a super flat surface comprises, as a predominant phase or phases, at least one crystal phase selected from the group...
6391419 Magnetic recording medium  
A magnetic recording medium, comprising a magnetic layer containing a ferromagnetic metal thin film having micro-size projections on surface thereof and formed by vacuum film forming method and...
6388229 Method for laser texturing magnetic recording disk  
A method for controlling the laser texturing of a magnetic disk by using a texturing laser system to create texturing bumps and an analyzing laser system to determine texture bump height and to...
6381090 Hard disk drive head-media system having reduced stiction and low fly height  
A head and disk system for use in a disk drive includes a slider having a surface that contacts the disk. This disk contacting surface of the slider is textured with pads, bumps, an etched surface...
6377413 Method and apparatus for encoding identification information on a magnetic disc  
A method and apparatus for processing a magnetic disc prior to assembly of the disc in a disc drive storage assembly includes measuring a physical characteristic of the magnetic disc and encoding...
6366426 Apparatus and method for reducing structural vibrations in a disc drive utilizing fusible alloys  
An apparatus and method for reducing structural vibrations in a disc drive that incorporates a fusible alloy. A fusible alloy portion is constrained between a first and second structural alloy...
6363599 Method for manufacturing a magnetic disk including a glass substrate  
A method for making magnetic disks comprises the steps of: applying a protective layer of material on a sheet of glass; b) cutting the sheet of glass into glass squares; c) stacking the glass...
6351339 Multi-dimensionally oriented magnetic field information storage system  
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 disk topography is formed from...
6350506 Textured surface and method  
A glass, glass-ceramic, or ceramic body having a textured pattern over at least a portion of its surface, the pattern comprising depressed, conical areas at spaced intervals on the surface, and a...
6349008 Magnetic recording media, magnetic heads and magnetic read-write apparatus using the same  
A magnetic recording medium wherein, when the axis of easy magnetization of the magnetic recording medium for magnetically recording information by means of a magnetic head is projected onto a...
6347016 Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier  
A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern...
6335103 Magnetic recording media for longitudinal recording  
A magnetic recording medium including a substrate and a magnetic layer on the substrate which is a Co-based alloy including Pt and/or Ir, including at least one of Ti, Zr, Hr, V, Nb, Ta, Cr, Mo, W,...
6329309 Glass with high specific rigidity for recording medium  
Oxynitride glass whose composition is represented by Al--Si--O--N or M--Al--Si--O--N (where M denotes Ca, Mg, or rare earth element), wherein the content of O and N as non-metallic components is in...
6324032 Magnetic recording medium having linear or curved tracking servo patterns formed obliquely relative to direction of tracks, and magnetic recording apparatus using the same  
A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a...
6324026 Readable indelible mark on storage media  
A storage media is disclosed and comprises a storage body and a readable indelible mark formed in the body such that portions thereof are indelibly altered. The mark is read by writing first data...
6320728 Laser textured magnetic surface micro-ridges/grooves to enhance magnetic recording performance  
A magnetic data storage medium is provided that has a substrate surface with regularly spaced, continuous ridges and grooves thereby to enhance the magnetic layer crystallization orientation. Data...
6313969 Magnetic disk medium and magnetic recording system  
A magnetic disk medium of the invention comprises a disk form of substrate, a multiplicity of unit minuscule recording areas formed of a magnetic material on the substrate to magnetically record...
6310748 Magnetic thin film magnetic recording medium  
A ferromagnetic thin film is used to provide a magnetic recording medium whose noise is low and whose S/N is high. The ferromagnetic thin film as the magnetic film of the magnetic recording medium...
6309802 Disk medium  
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...
6307713 Center core for disc-shaped recording medium and process of producing same  
A center core for a disc-shaped recording medium. The center core comprises a flange section for supporting the disc-shaped recording medium. A generally cylindrical section having a bottom wall is...
6277465 Glass substrate for information recording medium  
In a magnetic recording medium, surface roughness of a glass substrate and the variation of the surface roughness are suppressed. Namely, the surface roughness (Rmax, Ra, Rq) and the relation...
6275029 System and method for monitoring flying height using textured disks  
A spacing between a transducer head and disk surface in a disk drive's head-disk interface is monitored. The transducer head includes a magneto resistive element. The surface of the disk includes a...
6274227 Magnetic recording medium having a magnetic layer and a coating thereunder  
A magnetic recording medium comprising a nonmagnetic substrate, a liquid lubricant-containing coating layer having a porosity (U) formed on the substrate, and a magnetic layer having a porosity (M)...
6270885 Perpendicular magnetic recording medium  
In a perpendicular magnetic recording medium, a soft magnetic film playing the role of an back layer, but not having a domain wall structure, is positioned beneath a perpendicular magnetization...
6268979 Magnetic record medium having a sputter formed thin film texture with second projections of a height lower than first projections  
A magnetic recording medium includes a substrate, a data region and a CSS region on a surface of the substrate. Information is recorded in the data region, and a magnetic head is held stationary in...
6268978 Magnetic disk apparatus  
A magnetic disk apparatus having excellent wear resistance and high reliability can be provided by arranging cylindrical or polygonal cylindrical protrusions or protrusions of honeycomb structure...
6266210 Magnetic recording and reading device  
Provided is a large-capacity magnetic recording and reading device having a magnetic recording medium, a magnetic head and a circuit enable density to be increased even during recording in high...
6262860 Magnetic disk apparatus with recessed tracking servo marks  
A magnetic disk apparatus includes head bases placed one on another and supported for pivotal motion on a common pivot shaft, and sliders provided at free ends of the head bases and having magnetic...
Matches 151 - 200 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >