Matches 201 - 250 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6254966 Information recording mediums, supporter used in the mediums, manufacture methods of the supporter, manufacturing apparatus of the supporter and stampers for producing the mediums  
An information recording medium and a supporter used for the information recording medium capable of recording a land/groove recording by using a high density recording technique such as a...
6248416 Highly oriented magnetic thin films, recording media, transducers, devices made therefrom and methods of making  
The present invention provides for magnetic and magneto-optic recording media, transducers and data storage devices constructed therefrom that have highly oriented films having long range order in...
6246544 Magnetic disk drive  
A magnetic disk drive for recording and reproducing data out of a magnetic disk with a magnetoresisive (MR) head contacting the disk is disclosed. When the MR device is spaced from the surface of...
6246543 Textured data storage disk having a brittle nonmetallic substrate  
A magnetic recording disk with a glass substrate is textured by a process which creates an array of bumps in a magnetic head contact start and stop (CSS) region of the disk. The texturing process...
6246537 Recording medium, method and apparatus utilizing circular logical block address association  
A disc-shaped recording medium for magnetically recording information signals, in which logical block addresses are associated with the recording tracks on the disc in such a sequence in which the...
6236542 Substrate independent superpolishing process and slurry  
The present invention utilizes a combination of chemical and mechanical finishing processes to polish a disk substrate surface to near atomic smoothness. Broadly speaking, the surface of a disk...
6231801 Method to reduce wear for proximity recording in a magnetic disc storage system  
A method for reducing wear for proximity recording in a magnetic disc storage system is provided. The method includes manufacturing a disc drive for proximity recording with a magnetic disc having...
6229670 Laser texturing of a magnetic disk media to create a contact zone of ridge sections spaced a greater radial distance apart than the width of the ridge section  
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 at...
6217970 Magnetic recording medium, method of producing the same, and recording and reading-out method  
The disclosure describes a magnetic recording medium having at least a magnetic layer, optionally by means of an under layer, on a non-magnetic substrate, wherein projections formed by irradiation...
6215620 Data storage diskette with modified hub  
A data storage diskette incorporates a hub having a reduced diameter. A circular sheet of magnetic media is mounted about the hub. The reduced diameter imparts added flexibility to inner regions of...
6205002 Disk drive with textured slider contact region  
A disk drive having a disk with a contact start/stop (CSS) region on which a slider can rest is described. The CSS region is divided into at least three zones with the inner and outer zones having...
6195234 Magnetic discs with raised features in the clamping area  
A disc drive, includes a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly also includes a bearing housing, head...
6194045 Rigid disc substrate comprising a central hard core substrate with a hard, thermally and mechanically matched overlying smoothing layer and method for making the same  
A rigid magnetic memory disc (28) is disclosed having a substantially flat, central hard core substrate (12) and an overlying smoothing layer (14) deposited thereon. The smoothing layer (14) is...
6191921 All metal base plate having a hardened flange and soft hub for attaching a load beam assembly to a head actuator arm of a disk drive by swaging  
A base plate for a suspension assembly in a hard disk drive wherein the base plate has a hardened flange and soft hub. The base plate is stamped in a progressive die in a sequence of forging and...
6187413 Media landing zone with recess for 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 and also during disk accelerations and...
6181662 Latent irradiance discrimination method and marker system for cartridgeless data storage disks  
A cartridgeless data storage disk for a data storage disk drive has a latent irradiance marker. A light source illuminates the marker and the marker emits irradiance as phosphorescence. A...
6175472 Method for generating a position error signal calibration curve in a hard disk drive  
A method and apparatus for generating 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...
6166885 Magnetic recording medium and method for producing the same  
The method for producing a magnetic recording medium, includes the steps of (a) subjecting surfaces of a substrate to grinding by a ductile-mode grinding with a grinding wheel having a setting...
6166884 Apparatus and system for stabilizing a disk media surface for engagement with a drive head  
An apparatus and system for improving the contact between the heads of a disk drive and the storage media of the disk by improving disk stability. The apparatus comprises a disk having a disk...
6165582 Magnetic recording medium  
A magnetic recording medium having a diamond-like carbon (DLC) film added therein a Group IV element of the periodic table such as silicon, particularly in the vicinity of the boundary between the...
6153321 Method of using a substrate with magnetic substance of a magnetic scale  
An article comprising a substrate formed with predetermined patterns and magnetized magnetic substances arranged in the substrate in accordance with the predetermined patterns, and a method of...
6153318 Layered material having properties that are variable by an applied electric field  
A composition of materials that is ferromagnetic and whose properties may be varied by means of an applied electric field and has at least a first and second layer. The first layer may be a...
6153284 Magnetic recording medium with high non-operational shock resistance  
Non operational shock resistance is achieved by preventing separation of the read/write head from the disk. Embodiments include optimizing the normal stiction force of a lubricant topcoat by...
6146735 Information storage device having coated metal hub  
A mini-floppy disk or like information storage device is comprised of a circle of data storage medium having a central metal hub. In use, the hub is contacted with and driven by a magnetized...
6146551 Semiconductive ceramics and supporting member made of the same for supporting magnetic disk substrate  
A semiconductive ceramic contains a compound of MgO and SiO 2 as a main component, and an iron oxide such as FeO, Fe 2 O 3 , and Fe 3 O 4 as an electric conductivity provider. According to...
6139936 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...
6136401 Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information  
In accordance with the present invention, a glass substrate of a disk for recording information, containing oxides of rare earth elements and fine particles dispersed therein, and a disk for...
6132843 Glass substrate for magnetic disks  
A glass substrate for a magnetic disk of the present invention is one in which a laser beam is irradiated on a main surface thereby forming a large number of protrusions thereon to form texture...
6130807 Information storage disc having a curved disc surface  
A disc is used for recording information in a disc drive. The disc includes a data storage surface defined by a periphery. The data storage surface is curved to reduce stiction and improve slider...
6118633 Plastic disk with hub and disk drive for using same  
A plastic disc for storing digital information is disclosed. The disc comprises a plastic platter that is integrally formed concentrically around a metal portion. The disc may have an inner plastic...
6118632 Magnetic disk stack having laser-bump identifiers on magnetic disks  
A magnetic disk with nonmagnetic information encoded under, in or above the magnetic layer of the disk is described along with the disk drive using the magnetic disks. The information may be stored...
6113753 Systems and methods for making a magnetic recording medium on a flexible metal substrate  
A method is provided for processing a metal foil sheet to produce magnetic recording media. The method comprises providing an elongate metal foil sheet having a first side and a second side. The...
6110330 Process for bonding lubricant to magnetic disk  
This invention relates to a process for forming a lubricant layer of differing thickness on distinct zones of a maonetic disk of a hard disk drive without heating, inert gas plasma and UV-radiation...
6108169 Randomly laser-textured magnetic recording media  
A device and method for storing magnetically readable data are provided, the device including a disk having a substantially rigid, non-magnetizable substrate having a substantially planar surface...
6104579 Magnetic disk head having data zone and control signal zones which generate different lifts when flown over by a head slider  
A magnetic disk having data record and control signal record zones configured so that the flying height of a head slider thereof varies thereby enabling recovery of control signals. The flying...
6104578 Magnetic disk and magnetic disk apparatus having an annular start-stop area with a radial downslope  
A magnetic recording disk of a disk drive apparatus is constructed having a radially sloped surface, so that the outer area of the disk is thinner than the inner area. The radially downward slope...
6103404 Laser textured magnetic disk comprising NiNb  
A method for manufacturing a magnetic disk comprises the steps of depositing NiP (20) on a substrate (22); depositing NiNb (24) on the NiP; and laser texturing the NiNb. "Sombrero" shaped texture...
6093472 Magnetic recording medium with laser textured glass or glass-ceramic substrate  
A magnetic recording medium is formed with a laser textured glass or glass-ceramic substrate. The use of a pulsed, focused laser light beam, such as a CO 2 derived laser light beam, enables the...
6088200 Magnetic disc and magnetic disc drive  
Recording into and reproduction from the magnetic disc 3 is done a magnetic head installed on a head slider of which at least a portion is floated during the recording/reproduction. On the magnetic...
6088199 Magnetic disk for self-cleaning a disk drive recording head  
A magnetic disk for self-cleaning a disk drive recording head communicating with a surface of the magnetic disk. The magnetic disk contains an abrasive cleaning zone of a designated width located...
6084754 Method and apparatus for positioning a magnetoresistive head using thermal response to servo information on the record medium  
The present invention is a method and apparatus for positioning a magnetoresistive (MR) head relative to a storage medium in a storage device. The storage medium is mounted in the storage device to...
6081411 Thin film disk media using optimum surface orientation to written data tracks  
The hard disk drive manufacturing method of the present invention includes an initial determination of the orientation of the individual hard disks during the various processing steps and disk...
6077603 Seeded underlayer in magnetic thin films  
A seed layer is deposited under an underlayer in magnetic thin film media. The seed layer material has a similar lattice parameter and a similar crystal structure to the underlayer material. The...
6077585 Optical recording medium and method of preparing same  
An optical recording medium having at least one aluminum nitride and silicon nitride composite dielectric layer is provided. The amount of aluminum nitride in the dielectric layer, x, is more than...
6075683 Disk drive with passive multiple fly height slider and cooperative disk pattern  
A disk drive having a passive slider exhibiting two fly heights, one for recording and reading operations and a second for idling. The disk drive has a magnetic recording surface set for rotation...
6068905 Composite disk substrates  
A disk substrate fabricated front an inner substrate having a specific stiffness greater than about 7.6 Mpsi/gm/cc and an encapsulating layer deposited over the inner substrate. The inner substrate...
6068891 Method for laser texturing a glass ceramic substrate and the resulting substrate  
A method for texturing a glass ceramic substrate comprising the steps of applying a laser pulse to the substrate such that a portion of said substrate is heated to a temperature higher than the...
6057984 Method for data writing/read-out using a contact start and stop system  
A method for conducting data writing/reading-out utilizing a contact start and stop (CSS) system is provided. The system includes a magnetic disc having a data zone for writing/reading-out of data...
6057021 Magnetic recording media and magnetic recording system using the same  
In a magnetic recording medium having a non-magnetic disk substrate and a magnetic film formed on the surface of the non-magnetic disk substrate, a surface average roughness factor Ra(r) on the...
6055140 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...
Matches 201 - 250 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >