Matches 101 - 150 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6804085 Hard drive system interface between a disk surface and a transducer contacting the surface during communication  
An electromagnetic read/write system includes a contact interface formed by a pole-structure-carrying wear pad and a recording surface. The uppermost portion of the recording surface is...
6804081 Structure having pores and its manufacturing method  
A structure having pores includes a first layer containing alumina, a second layer that includes at least one of Ti, Zr, Hf, Nb, Ta, Mo, W and Si, and a third layer with electrical conductivity, in...
6801397 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...
6801396 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...
6795274 Method for manufacturing a substantially circular substrate by utilizing scribing  
A method for manufacturing a substrate for a magnetic disk comprises the acts of mounting a workpiece on a spindle; rotating the workpiece and scribing the workpiece to form first and second scribe...
6794062 Magnetic transfer master medium  
In the performance of a magnetic transfer utilizing a magnetic transfer master medium, the occurrence of signal omissions in the magnetic data transferred to the slave medium is prevented. By...
6781779 Magnetic recording medium, its production method and magnetic recording apparatus  
A magnetic recording medium for recording information by forming a magnetic pattern for information thereon by a magnetic head, which is a longitudinal magnetic recording medium having a coercive...
6772507 Method of manufacturing magnetic recording medium  
A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are effectively recorded by a magnetic transfer...
6772272 Apparatus and method for writing information to a designated information storage medium with an allocated data storage device using a specified information recording format  
A method to write information to a designated information storage medium using an allocated data storage device using a specified information recording format, whereby a previously-determined media...
6764734 High modulus and high damping plastic composite disc substrate for improved servo control by injection and co-injection molding  
A substract for use in a data storage system is disclosed. The substrate includes at least one core layer comprising at least one plastic or plastic composite material exhibiting a modulus of about...
6762899 Method and apparatus for estimating the flyheight of an airbearing slider in a storage device using variable spindle velocity  
A method and apparatus for estimating the flyheight of an airbearing slider in a storage device using variable spindle velocity. The slider floats on an airbearing over a rotating storage disk. The...
6751060 Magnetic media with readable topographical features  
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...
6740384 Recording media having protective overcoats of highly tetrahedral amorphous carbon and methods for their production  
The invention provides systems and methods for the deposition of an improved diamond-like carbon material, particularly for the production of magnetic recording media. The diamond-like carbon...
6699600 Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordings  
A magnetic recording medium comprising: on a non-magnetic substrate, at least a soft magnetic undercoat film comprising a soft magnetic material; an orientation control film for controlling an...
6693542 Electronic article surveillance markers for recorded media  
A harmonic responsive electronic article surveillance marker is associated with a central, non-recorded region and/or a peripheral non-recorded region of an optically recorded or recordable media....
6686025 Magnetic recording medium  
A magnetic recording medium that does not develop film swelling when exposed to severe conditions has a nonmagnetic substrate having a trench formed in the area within 2 mm from and concentrically...
6683754 Hard disk drive head-media system having reduced stiction and low fly height  
A head and disk system for use in a disk drive that includes a slider having a surface that contacts the disk. This disk contacting surface of the slider is textured with pads, bumps, an etched...
6677052 Preseed layer for a magnetic recording disk  
A magnetic recording disk is provided having an amorphous preseed layer of chromium, titanium, and yttrium. The use of the preseed layer improves the magnetic performance of the disk including...
6671129 Contact type magnetic disc apparatus  
The density of the magnetic head protective layer is set to be higher than the density of a magnetic disc medium protective layer. Also, the Young's modulus of the magnetic head protective layer is...
6665145 Magnetic recording medium with unit minute recording portions  
In conjunction with a so-called patterned medium including recording tracks each having an array of unit minute recording portions of a magnetic material separated by non-recording portions of a...
6663938 Media contact zone with bell-shaped texturing features  
A magnetic data recording medium substrate has a contact zone and a data zone. The contact zone is textured by forming multiple texturing features, each having a bell-shaped profile resembling a...
6660357 Perpendicular magnetic recording media with laminated soft magnetic underlayer  
Magnetic recording media having a biased soft magnetic underlayer are disclosed. The soft magnetic underlayer includes at least two soft magnetic layers separated by a thin non-magnetic layer....
6649285 Magneto-optical recording medium and manufacturing method therefor  
A magneto-optical recording medium includes a magnetic reproducing layer having an axis of easy magnetization in a direction perpendicular to its layer surface, a magnetic intermediate layer formed...
6624976 Magnetic disc cartridge having a substrate with magnetized pit trains and a substrate with same coefficient of thermal expansion as hub  
A magnetic disc rotates causing an air flow that produces a floating force head unit which undergoes floating force by air flow produced as the result of the fact that the magnetic disc is rotated...
6620532 Magnetic recording medium and magnetic write/read method  
A patterned magnetic recording medium has clusters ( 2 ) in which minimum magnetic reversal units ( 21 ) with an intervening nonmagnetic region ( 3 ) are equidistantly arranged in longitudinal and...
6614608 Buried servo patterned media  
A data storage system includes a data storage disc for storing magnetically encoded data and servo information. The data storage disc includes a data layer adapted to be magnetically encoded with...
6611400 Texture structure for optimizing head disc interface  
A head disc interface having a fine pitch surface roughness including fine pitch projections having a relatively smooth roughness height and a projection pitch <1.0 μm for optimizing...
6606221 Viscoelastic disc clamp using adhesive with radial compliance  
Herein is disclosed a method and apparatus for coupling a disc to a hub, so as to dampen radial vibrations of the disc. A hub rotates and is coupled to a magnetically encodable disc via a flexible...
6591478 Method of producing magnetic head  
The use of a Nd-YAG laser or excimer laser enables easy formation of protrusions on a protecting layer and a portion of an opposite surface near the trailing side end thereof and a thin film...
6583958 Magnetic recording medium and magnetic storage system using same  
Provided are a low-noise, high-performance magnetic recording medium obtained by fining the size of the grains in a magnetic film, and a magnetic recording medium of low thermal demagnetization...
6583957 Magnetic hard disk having concentric magnetic tracks with flat surface and fabrication method thereof  
A magnetic hard disk has magnetic tracks for storing data, which is read or written by a magnetic head floating immediately above the magnetic track while the magnetic hard disk is rotating. The...
6583945 Method for irreversibly write-securing a magnetic storage cartridge  
A data cartridge and method for providing a write-securable storage medium that inhibits writing. The medium comprises a write-secure-type indicator in a predefined location that indicates the...
6577472 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture  
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...
6567240 Disk drive platter using sputter shadows thereon for determining orientation thereof  
A disk for a disk drive uses a circular platter having first and second sides and a circumferential edge. The circumferential edge of the disk has four symmetrically spaced apart shadows and a...
6563673 Method and apparatus for minimizing slider fly heights over patterned media  
A patterned magnetic storage medium has a plurality of data sectors separated by respective servo sectors with each servo sector having a pattern of pits representing servo data. Grooves in each...
6558771 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...
6558582 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...
6556375 Hard disk drive device  
The object of the present invention is to provide a hard disk drive device having a bearing device of larger size and sufficient strength, improved impact resistance, high accuracy of rotation, and...
6556365 Storage media having a wide servo band and high data format efficiency and a storage using the same  
A servo control method for a storage media includes arranging a plurality of servo sectors along a circumferential direction of the disk-type storage medium without successively arranging the...
6552872 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...
6552871 Hard disk drive head-media system having reduced stiction and low fly height  
A disk drive system including a disk having a contact surface and a slider having a surface with a pattern of features is described. The disk's contact surface is textured with protrusions that...
6548139 Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same  
In a glass substrate for use in a magnetic recording medium, a surface roughness of at least a principal surface of the glass substrate is measured by the use of the interatomic force microscope...
6541431 Lubricant for magnetic recording medium  
The present invention provides a lubricant for magnetic recording medium which comprises, as an effective component, a phosphazene compound of formula [N═P[O(C 6 H 4 )—(A) z —R] a [OCH 2...
6541132 Magnetic disk having specific track width and bit length  
A high-capacity magnetic disk comprises a support, a non-magnetic layer and a magnetic layer having a thickness less than 0.15 μm and containing ferromagnetic powder selected from fine particles...
6535352 Head media interface for stiction control  
A head media interface for contact starts and stops. The head media interface including a plurality of bumps extending from bearing surfaces of the slider and a data storage disc including a...
6529341 Magnetic recording/reproduction device using preformat information  
A magnetic disk for a magnetic recording/reproduction device includes a magnetic head, wherein a magnetization bit-pattern corresponding to a preformat information signal is recorded beforehand on...
6522501 Magnetic recording medium and magnetic write/read apparatus using the same  
A magnetic recording medium is obtained, which satisfies R−9709/N<6.6, when its surface is attracted by a magnetic head with a surface pressure of 250 gf/mm 2 or less or has a load area ratio...
6519114 Magnetic storage medium having a textured zone  
A storage medium is provided that includes a texture zone having a plurality of protrusions. Each of the protrusions is separated by a short circumferential pitch. Alternatively, the texture zone...
6510125 Storage medium having electronic circuit, apparatus communicating information with the electronic circuit, and system including them  
The present invention provides a storage medium having intelligence that has, in one-piece, a storage medium and an electronic circuit, and has communication structure with an external apparatus to...
6509111 Magnetic recording media and magnetic disk apparatus  
A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said...
Matches 101 - 150 out of 1104 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >