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Match Document Document Title
7168153 Method for manufacturing single-sided hard memory disks  
Various apparatus and methods are provided for positioning and handling single-sided hard memory disks. A disk carrier is provided with ribs formed on the inside surface of opposing side walls. The...
7167342 Magnetic recording medium, magnetic recording playback device, and information processing device  
A magnetic recording medium is provided while including a recording layer in which magnetic materials are in the shape of a circular cylinder and uniformity and size reduction are achieved...
7158346 Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix  
Heat assisted magnetic recording systems with composite recording films are disclosed. The magnetic recording films include superparamagnetic nanoparticles dispersed in an antiferromagnetic or...
7147906 Data storage medium comprising polyimides  
In one aspect the present invention provides a storage medium for data, the storage medium comprising: a) a substrate, a physical portion of which comprises at least one polyimide, and b) at least...
7138155 Method for evaluating optical information medium and optical information medium  
A simple method for evaluating an optical information medium by judging quantitatively and reproducibly the surface quality of the optical information medium by the use of an artificial fingerprint...
7136252 Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern  
In the present invention, with respect to a convex-concave structure necessary for respective functions of a servo area in a perpendicular magnetic recording medium, a specification of...
7112377 Magnetic recording medium, method of manufacturing the same, magnetic medium substrate employed in the magnetic recording medium, and magnetic storage unit  
A magnetic recording medium is disclosed that includes a substrate; an anodic alumina film formed on the substrate; a pore formed in the anodic alumina film; a carbon layer covering the surface of...
7108903 Magnetic disc medium  
A magnetic disc medium comprising: a magnetic sheet in the form of a disk; a case encasing the magnetic sheet so as to be capable of rotating; and a nonwoven liner fastened on an inner face of the...
7099109 Hard disk drive having air flow accelerating device  
A hard disk drive having an air flow accelerator for improving taking-off and landing of a slider on a surface of a disk. The hard disk drive includes a spindle motor and a disk for storing data...
7097924 Magnetic recording media and method of forming them  
The present invention is directed to-carrying out a high density magnetic recording to a material having a large coercive force by perpendicular magnetic recording head. By giving a patterning...
7095589 Magnetic recording medium and magnetic recording and reproducing system  
A disc-shaped magnetic recording medium has magnetic tracks that are arranged thereon substantially concentrically for writing and reading magnetic information. Assuming that a saturation magnetic...
7095581 Magnetic recording and reproducing apparatus with recording layer having predeterminded convex-concase pattern  
A convex structure, where a servo signal is recorded, of a perpendicular magnetic recording medium is set to a truncated quadrangular pyramid shape and a specification of the truncated quadrangular...
7094484 Master carrier for magnetic transfer, inspecting method thereof, and magnetic recording medium producing method  
In a master carrier for magnetic transfer which comprises a support that has a transfer-recording pattern arrayed in the track direction thereof in accordance with the information to be transferred...
7092210 Magnetic recording and reproduction method  
A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating magnetic disk by means of a magnetic head, wherein the magnetic disk comprises a support and a...
7092209 Longitudinal magnetic recording using magnetic media with a soft underlayer  
A method of longitudinal recording using a medium with a magnetically soft underlayer is described. The method includes lowering the longitudinal coercivity in a magnetic domain in the magnetic...
7087290 Data storage media utilizing a substrate including a plastic resin layer, and method thereof  
In one embodiment, a data storage media comprises: a substrate comprising at least one plastic portion, an edge lift height of less than about 8μ, and an axial displacement peak of less than about...
7067206 Perpendicular magnetic recording medium and a method of manufacturing the same  
A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal close packed (hcp) crystal structure. A seed layer of...
7064927 Disk, method for making it free of asperities utilizing a step of exposing a surface of the disk to a gas cluster ion beam and disk drive unit for using the disk  
A method for making a magnetic disk, without chemical mechanical polishing to remove asperities, includes the steps of placing an annular-shaped element in a vacuum chamber, exposing a surface of...
7036209 Method of simultaneously forming magnetic transition patterns of a dual side recording medium  
A method of simultaneously forming magnetic transition patterns in both side surfaces of a dual-sided magnetic or magneto-optical (MO) recording medium comprises steps of: (a) providing a...
7035049 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device  
A glass substrate for a magnetic disk contains a transition metal. The substrate, which is subjected to formation of zone texturing by irradiating the substrate with a laser beam, has a high...
7026098 Electron beam lithography method  
An electron beam lithography method for performing lithography of elements included in a pattern by scanning a disk having resist coated thereon, placed on a rotating stage which is movable in a...
7019924 Patterned medium and recording head  
A magnetic recording system includes a patterned medium comprised of land areas and trough areas, a write element which writes the data to the patterned medium, and a read element which reads the...
7016154 Magnetic recording disk having a safe zone  
A disk drive having a magnetic recording disk with a safe zone is described. A surface texture of the safe zone induces the head to fly at a greater height than while over data zones of the disk.
7006328 Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus  
A magnetic recording medium comprising a glass substrate having grooves on the surface thereof, an orientation-determining layer, a non-magnetic undercoat layer, a magnetic layer, and a protective...
6995934 Noise suppressed data storage media  
Magnetic data storage media having recording layers that include microscopic surface protrusions are described. A recording head of a magnetic drive may contact the protrusions, i.e., the...
6989952 Magnetic recording disk drive with laminated media and improved media signal-to-noise ratio  
A magnetic recording disk drive has an inductive write head and a heater to record data in laminated media on the recording disk. The laminated media, with at least two ferromagnetic layers...
6980387 Magnetic disk medium, fixed magnetic disk drive unit, and method thereof  
A magnetic disk medium allows embedding ID information that prevents manipulation and yet holds its uniqueness. ID information for uniquely identifying a medium is recorded separately as a master...
6977108 Recording medium including patterned tracks and isolation regions  
A recording medium includes a substrate, and a recording layer formed on the substrate having (a) a recording track band, and (b) recording cells regularly arrayed in the recording track band to...
6967798 Magnetic recording disk having DTR patterned CSS zone  
A method and apparatus is described for gradually transitioning a slider from operation over a patterned data zone to landing on a patterned CSS zone. The ratio of raised area width to recessed...
6963461 Method for magnetic recording on laminated media with improved media signal-to-noise ratio  
A magnetic recording disk drive has an inductive write head and a heater to record data in laminated media on the recording disk. The laminated media, with at least two ferromagnetic layers...
6961196 Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium 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...
6927941 Disk drive disk with landing zone having textured and untextured regions  
A disk storage medium and a disk drive which reduce friction during landing of the head/slider is described. The minimum fly height area of the head/slider is positioned over a texture free portion...
6920008 Slider fly-height measurement using viscoelastic material  
A method is presented for measuring the height of an air-bearing separating a flying component from a rotating surface using physical deformation of a small amount of material deposited on the...
6917487 Seamless and untrimmed primary servo burst with secondary servo bursts  
A disk storage system having servo data stored thereon for accurate head position control over a magnetic or other storage medium. The servo data is seamless and untrimmed and consists of a primary...
6914749 Magnetic anisotropy of soft-underlayer induced by magnetron field  
A perpendicular magnetic recording medium having a substrate and a magnetic underlayer on the substrate, the magnetic underlayer having an easy axis of magnetization substantially directed in a...
6903905 Magnetic head including magnetoresistive element for perpendicular magnetic recording type disk drive  
This invention provides a perpendicular magnetic recording type disk drive comprised of a double-layered disk medium and a magnetic head containing a read head element containing a GMR element. The...
6899942 Optical disk label and method  
An optical disk of the type rotated by a spindle positioned in a centrally-located hole, and including a disk body including an annular data area, and a centrally-located, integrally-formed annular...
6898031 Method for replicating magnetic patterns on hard disk media  
A system and method for replicating magnetic patterns on hard disk media includes a mask located over or above a magnetic recording layer. The recording layer may include a single, dual, or...
6884526 Textured magnetic media for use with low-flying padded heads  
High areal recording density, magnetic hard disk recording media including CSS landing zones with laser-textured surfaces having shallow bump heights of from about 40 to about 80 Å, bump spacing...
6876520 Magnetic disk cartridge  
A magnetic disk cartridge comprising a housing with space, and a magnetic disk rotatably held in the space of the housing. The magnetic disk includes a flexible magnetic recording medium, and at...
6873492 Magnetic media with readable topographical features in combination with a slider-mounted non-magnetic transducer  
Magnetic patterned media comprise topographical features readable with a slider-mounted non-magnetic transducer sensitive primarily to a local aerodynamic boundary condition, in addition to a...
6850391 Design of a rigid disc plastic substrate with high stiffness insert  
An injection molded plastic disc substrate incorporating a stiff insert made of a very stiff material (metal, ceramic, composite . . . e.g. silicon) embedded in the plastic matrix. Preferably, the...
6833975 Perpendicular magnetic recording medium and apparatus including a soft magnetic layer, an at least 20 nm thick non-magnetic layer, and a 50-90 nm gap length  
In accordance with the present invention, in a magnetic recording medium for perpendicular magnetic recording, a recording characteristic which is not inferior to that of double-layer medium and a...
6831802 Methods and apparatus for thermally bonding lubricant to a disk surface by the repetitive writing of data  
A method of thermally bonding lubricant over a surface of a magnetic disk in a disk drive involves providing a heat source at an air bearing surface (ABS) of a magnetic head; causing the heat...
6821653 Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus  
A magnetic recording medium exhibiting excellent read-write conversion characteristics, including a non-metallic substrate including, on its surface, texture grooves having a line density of 7,500...
6819531 Magnetic recording and reading device having 50 mb/s transfer rate  
A magnetic recording and reading device having a transfer rate of not less than 50 MB/s includes a magnetic recording medium having an absolute value of normalized noise coefficient per recording...
6818960 Magnetic recording medium and method of fabricating the same  
A magnetic recording medium improved in spacing loss and durability is disclosed. The magnetic recording medium is composed so that a magnetic layer is formed on a non-magnetic support, further...
6818089 Attachment method for disc protective sheet  
An attachment apparatus and method for attaching a disc protective sheet to at least one half of a magnetic disc cartridge body include a supporting mechanism that supports each half body section...
6816341 Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group  
A recording element or a reproducing element in a head generates heat that decomposes lubricating agent adhered to a slider surface near the recording/reproducing element of the head. This...
6807028 Core center for magnetic disk  
Stable high speed rotation of magnetic recording media is obtained by improving the manufacturing accuracy of a step portion formed in a center core for a magnetic disc between a standardizing...
Matches 51 - 100 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >