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| Number | Title | Issue Date |
| 8179637 | Magnetic storage apparatus having heated recording head A magnetic storage apparatus includes a magnetic storage medium including a recording layer, and a backing layer including a portion having a Curie temperature lower than that of the recording layer, a recording head that generates a magnetic field for recording fro... | 05/15/2012 |
| 8169742 | Magnetic recording medium, magnetic recording and reproducing apparatus, method for manufacturing magnetic recording medium, and method for checking magnetic recording medium A magnetic recording medium is provided, which has recording layers having concavo-convex patterns formed on both sides of a substrate and can easily distinguish one face from the other face. A magnetic recording and reproducing apparatus having the magnetic recordi... | 05/01/2012 |
| 8159784 | Magnetic recording medium and production method thereof The magnetic recording medium of the present invention has a pattern formed using a pattern-forming agent in a laminate of multiple layers including a base material and a magnetic recoding layer, wherein the pattern is recognized on the surface of the laminate oppos... | 04/17/2012 |
| 8130468 | System and apparatus for patterned media with reduced magnetic trench material A bit patterned magnetic media design for reducing the amount of magnetic material located in the trenches between topographic features is disclosed. An intermediate non-magnetic layer is deposited on the topography prior to depositing the functional magnetic layer ... | 03/06/2012 |
| 8111481 | High capacity disk drive using thin foil disks at elevated rotational speeds A data storage device uses a foil disk platter with significantly reduced inertia and weight as compared to the thick aluminum or glass disk platter in a typical hard disk drive. The reduced rotating inertia of the foil disk enables faster spin-up performance which ... | 02/07/2012 |
| 8107194 | Writing and reading multi-layer continuous magnetic recording media A method and apparatus for writing magnetization states in a pair of magnetic layers of a multi-layer continuous magnetic recording medium and a method and apparatus for reading readback pulse shapes representing a magnetization state transition between such written... | 01/31/2012 |
| 8085502 | Writing and reading multi-level patterned magnetic recording media, with more than two recording levels A method and apparatus for writing magnetization states in magnetic islands of a multi-level patterned magnetic recording medium with more than two recording levels and a method and apparatus for reading readback waveforms representing written magnetization states o... | 12/27/2011 |
| 8064165 | Electronic information storage apparatus with non-lubricated media Described herein are various embodiments of an electronic information storage apparatus and an associated method and system. For example, according to one illustrative embodiment, a disk drive comprises a base and at least one disk that are rotatably attached to the... | 11/22/2011 |
| 8059368 | Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording apparatus It is possible to improve the recording and reproducing S/N ratio, the reproduction signal intensity, and the degree of high density recording. There are provided a plurality of recording tracks formed on a substrate, each recording track being formed of a magnetic ... | 11/15/2011 |
| 8049993 | Magnetic recording medium and magnetic storage device A magnetic recording medium includes: a substrate; a recording layer that is formed on the substrate to have a grooved pattern; and a protection layer formed on the recording layer to fill in the grooved pattern, wherein the recording layer is defined to have a serv... | 11/01/2011 |
| 8040633 | Magnetic head and magnetic recording-reproducing apparatus A magnetic recording-reproducing apparatus includes: a magnetic recording medium in which portions corresponding to track portions serve as recording areas and in which portions between the recording areas serve as non-recording areas; and a magnetic head having a m... | 10/18/2011 |
| 8031436 | Electron beam writing method for magnetic recording medium When performing writing on a substrate applied with a resist by rapidly vibrating electron beam in a direction orthogonal to a radial direction of the substrate and X-Y deflecting the electron beam while rotating the substrate in one direction, a long element is wri... | 10/04/2011 |
| 8009387 | Forming an aluminum alloy oxynitride underlayer and a diamond-like carbon overcoat to protect a magnetic recording head and/or media A method for forming a protective bilayer on a magnetic read/write head or magnetic disk. The bilayer is formed as an adhesion enhancing underlayer and a protective diamond-like carbon (DLC) overlayer. The underlayer is formed of an aluminum or alloyed aluminum oxyn... | 08/30/2011 |
| 8000060 | Perpendicular magnetic recording medium and system having a magnetic recording layer with a perpendicular recording layer, a magnetic coupling layer, and a writing assist layer Embodiments of the present invention provide a perpendicular magnetic recording medium having a substrate, a magnetic recording layer and a protective layer. The magnetic recording layer includes a perpendicular recording layer, a magnetic coupling layer and a writi... | 08/16/2011 |
| 7986492 | Process for filling a patterned media of a hard disk with UV-cured lubricant A patterned disk for a hard disk drive. The patterned disk includes a magnetic material over a substrate. The magnetic material includes a plurality of grooves. The grooves are filled with a lubricant that is hardened with UV exposure or some other hardening process... | 07/26/2011 |
| 7986493 | Discrete track magnetic media with domain wall pinning sites A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a t... | 07/26/2011 |
| 7983004 | Magnetic recording medium with magnetic film pattern sidewalls having at least two faces of different slope angles and magnetic recording apparatus having the same According to one embodiment, there is provided a magnetic recording media including a substrate, and a magnetic recording layer including magnetic film patterns formed in a protruded form on the substrate, sidewalls of the magnetic film patterns having at least two ... | 07/19/2011 |
| 7983003 | Magnetic recording medium having soft magnetic layer and perpendicular magnetic recording layer A perpendicular magnetic recording medium 10 adapted to be mounted in a perpendicular magnetic recording type hard disk drive and including a disk-shaped disk base 12, a soft magnetic layer 14 formed on the disk base 12, and a perpendicul... | 07/19/2011 |
| 7978434 | Magnetic recording medium, method of fabricating the same, and magnetic recording apparatus A magnetic recording medium includes recording regions formed on a substrate, isolation regions formed between the recording regions so as to define the recording regions, and recording dots formed of a dot-like magnetic recording layer and arrayed in the recording ... | 07/12/2011 |
| 7969686 | Self-assembly structures used for fabricating patterned magnetic media Methods of defining servo patterns and data patterns for forming patterned magnetic media are described. For one method, a lithographic process is performed to define a servo pattern in servo regions on a substrate. The lithographic process also defines a first data... | 06/28/2011 |
| 7936536 | Magnetic recording medium having lands with curved upper surfaces and magnetic recording and reproducing apparatus In a discrete track medium and a patterned medium, a meniscus adsorptive force is reduced and writing into adjacent tracks is prevented. A magnetic layer in lands or patterns in the discrete track medium or the patterned medium is formed into a cylindrical shelly or... | 05/03/2011 |
| 7936537 | Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus It is possible to improve the recording and reproducing S/N ratio, the reproduction signal intensity, and the degree of high density recording. There are provided a plurality of recording tracks formed on a substrate, each recording track being formed of a magnetic ... | 05/03/2011 |
| 7911739 | Writing and reading multi-level patterned magnetic recording media A method and apparatus for writing magnetization states in a pair of magnetic islands of a multi-level patterned magnetic recording medium and a method and apparatus for reading readback waveforms representing the written magnetization states of a pair of magnetic i... | 03/22/2011 |
| 7898768 | Patterned medium with magnetic pattern depth relationship A patterned media has a substrate, and a magnetic recording layer on the substrate including protruded magnetic patterns and a nonmagnetic material filled in between the protruded magnetic patterns. In the patterned media, a depth Db and a depth Da | 03/01/2011 |
| 7881014 | Patterned magnetic recording medium having reduced magnetic interaction between neighboring magnetic recording layers A patterned magnetic recording medium including a plurality of magnetic recording domains arranged at predetermined regular intervals on a substrate, wherein the magnetic recording domains are multi-layered and comprise a soft magnetic layer interposed between a fir... | 02/01/2011 |
| 7876529 | Recording disk with antiferromagnetically coupled multilayer ferromagnetic island disposed in trench between discrete tracks An apparatus having a write head for writing data on to a recording medium comprises a recording disk medium and one or more ferromagnetic islands. The recording disk medium has a data layer in discrete tracks with trenches between the discrete tracks, and a soft un... | 01/25/2011 |
| 7876530 | Magnetic recording medium having a cobalt-based alloy film for high density recording and magnetic storage device using same In one embodiment, a magnetic recording medium comprises an underlying film, a magnetic film and a protective film formed in this order on a substrate. The magnetic film is a cobalt-base alloy film containing chromium and has a plurality of magnetic layers stacked w... | 01/25/2011 |
| 7826176 | Magnetic recording medium with thicker protective film in edge areas and magnetic recording apparatus using the medium A magnetic recording media includes a toroidal substrate, a surface thereof is divided into a recording area located in a central part between an outer peripheral edge and an inner peripheral edge, edge areas located within 100 μm or more and 2,000 μm or less from... | 11/02/2010 |
| 7821738 | Magnetic recording medium, stamper recording/reproducing apparatus and method of measuring a parameter Data track pattern regions, in which data track patterns are formed by concave/convex patterns, and servo pattern regions, in which servo patterns are formed by concave/convex patterns, are provided on a magnetic recording medium so as to be alternately disposed in ... | 10/26/2010 |
| 7817377 | Original disk fabrication method, magnetic recording medium manufacturing method and magnetic recording medium It is made possible to fabricate a bit-patterned magnetic recording medium having a high recording density and making favorable address deciphering possible. An original disk fabrication method for irradiating a photosensitive resin film with an electron beam to dra... | 10/19/2010 |
| 7773343 | Magnetic recording medium, and manufacturing method, manufacturing apparatus, recording and reproduction method, and recording and reproduction apparatus for the same With a magnetic recording medium, servo pits have to be recorded one disk at a time, which is a problem in that it takes more time and is more expensive. In view of this, with the present invention, at least one signal region whose surface roughness is different fro... | 08/10/2010 |
| 7760467 | Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording apparatus It is possible to improve the recording and reproducing S/N ratio, the reproduction signal intensity, and the degree of high density recording. There are provided a plurality of recording tracks formed on a substrate, each recording track being formed of a magnetic ... | 07/20/2010 |
| 7746598 | Information recording medium and recording/reproducing apparatus An information recording medium excellent in surface smoothness. The information recording medium has a data track pattern and a servo pattern formed on at least one surface of a substrate by a concave/convex pattern including a plurality of convex portions. The con... | 06/29/2010 |
| 7738213 | Magnetic disk medium, reticle and magnetic recording and reproducing apparatus A magnetic disc medium according to an aspect of the present invention includes: a preamble part in a servo area of each of sectors obtained by dividing a surface of the medium in a circumference direction, the preamble part including strip-shaped patterns formed of... | 06/15/2010 |
| 7733605 | Magnetic recording disk having a transition zone A disk drive having a magnetic recording disk with a transition zone is described. A surface texture of the transition zone induces the head to fly at a greater height than when operating over a data zone, while transitioning the head to a landing zone to park. ... | 06/08/2010 |
| 7719793 | Circumferentially patterned disk for longitudinal and perpendicular recording A magnetic medium for use in data recording that has a series of concentric magnetic track portions separated from one another by non-magnetic portions or gap portions. The magnetic portions define data tracks and prevent signals from one track from bleeding into an... | 05/18/2010 |
| 7701667 | Perpendicular magnetic recording medium and magnetic storage apparatus using the same Embodiments in accordance with the present invention provide a perpendicular recording medium with low noise and high recording density by reducing the effects from noise generated from the vicinity of the interface with the intermediate layer of the recording layer... | 04/20/2010 |
| 7701668 | System and method for forming nanodisks used in imprint lithography and nanodisk and memory disk formed thereby A system and method form a nanodisk that can be used to form isolated data bits on a memory disk. The imprint stamp is formed from first and second overlapping patterns, where the patterns are selectively etched. The selective etching leaves either pits or posts on ... | 04/20/2010 |
| 7684152 | Method of mitigating eccentricity in a disk drive with DTR media A disk drive with DTR media and method of assembly is described. The method may include aligning a discrete track recording (DTR) track pattern center on a DTR disk with a rotational center of a spindle hub and mounting the DTR disk on the spindle hub to minimize ec... | 03/23/2010 |
| 7656615 | Perpendicular magnetic recording disk with a soft magnetic layer having a discrete track recording pattern A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern. ... | 02/02/2010 |
