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7631419 |
Disk processing device and method
A disk processing device holds and rotates a disk with a spindle. Processing tapes are supplied out and wound up by a tape reel unit so as to sandwich and be pressed on both surfaces of the disk...
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7622205 |
Disk substrate for a perpendicular magnetic recording medium and a perpendicular magnetic recording medium using the substrate
A disk substrate for a perpendicular magnetic recording medium is, disclosed. The substrate exhibits sufficient productivity, serves the function of a soft magnetic backing layer of the...
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7615292 |
Magnetic recording medium
A magnetic recording medium having a recording layer formed in a concavo-convex pattern, which can allow a head to have stable flying characteristics. The recording layer is formed in a...
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7616404 |
Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium
The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, and the recording layer includes recording elements...
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7597792 |
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...
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7582368 |
Perpendicular magnetic recording medium with an exchange-spring recording structure and a lateral coupling layer for increasing intergranular exchange coupling
A perpendicular magnetic recording system and medium has a multilayered recording layer that includes an exchange-spring structure and a ferromagnetic lateral coupling layer (LCL). The...
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7580223 |
Magnetic recording media, substrate for magnetic recording media, and magnetic recording apparatus
According to one embodiment, a magnetic recording media includes a substrate having recording tracks and separating regions separating the recording tracks, the separating regions having patterns...
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7572528 |
Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus
A magnetic recording medium is obtained by easily patterning a magnetic recording layer without deteriorating its electromagnetic conversion characteristics, by forming a silicon-based protective...
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7562374 |
Form factor disk
Provided is a form factor disk such as an optical or magnetic disk used in electronic appliances and information appliances. The form factor disk includes: a circular plate having a first hole for...
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7554768 |
Information recording medium with concave/convex servo pattern having decreasing unit convex part length ratio
On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface of a...
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7550210 |
Perpendicular magnetic recording medium with multiple exchange-coupled magnetic layers having substantially similar anisotropy fields
A perpendicular magnetic recording medium has an “exchange-spring” type magnetic recording layer (RL) formed of two ferromagnetic layers with substantially similar anisotropy fields that are...
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7549209 |
Method of fabricating a magnetic discrete track recording disk
A method of forming a discrete track recording pattern in a magnetic recording disk. In one embodiment, the discrete track recording pattern may be formed in a NiP layer continuous throughout the...
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7548398 |
Thermally assisted magnetic recording medium
A thermally assisted magnetic recording medium includes a substrate having a first surface and a second surface opposite to the first surface. A recording layer is formed on the first surface of...
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7545604 |
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...
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7542235 |
Perpendicular magnetic recording medium
A perpendicular magnetic recording medium having a soft magnetic backing layer in which amount of cobalt elution is suppressed without imposing restraint on the construction of the protective layer...
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7524570 |
Perpendicular magnetic recording system and medium with high-moment corrosion-resistant “soft” underlayer (SUL)
A perpendicular magnetic recording disk has a soft magnetic underlayer (SUL) that has high corrosion resistance as well as high moment. The material of the SUL is an alloy comprising Co, Fe, X, and...
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7525762 |
Magnetic recording medium for perpendicular recording
A perpendicular magnetic recording medium at least comprises a perpendicular magnetic recording layer and a backing layer backing the perpendicular magnetic recording layer. The backing layer has...
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7514161 |
Laminated antiferromagnetically coupled media with decoupled magnetic layer
A laminated film structure is disclosed comprising multiple ferromagnetic layers achieving improved data recording performance. A non-magnetic spacer layer is disposed between an upper...
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7508632 |
Head-disc interface (HDI) with solid lubricants
An apparatus comprises a storage medium having a surface coated with a layer of a first solid lubricant, and a head separated from the storage medium by an air film, the head having an air bearing...
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7505220 |
Magnetic recording medium, recording/reproducing apparatus, and stamper
On a magnetic recording medium, a servo pattern is formed in a servo pattern region on at least one surface of a substrate by a concave/convex pattern including a convex part, at least protruding...
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7494727 |
Magnetic recording medium and magnetic recording and reproducing apparatus
A magnetic recording medium in which a recording layer is formed in a predetermined concavo-convex pattern and recording and reproducing apparatus comprising the magnetic recording medium are...
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7488429 |
Method of dry etching, method of manufacturing magnetic recording medium, and magnetic recording medium
The recording layer (to-be-etched layer), a main mask layer, and a sub mask layer are formed in this order over a substrate, and the sub mask layer is processed into a predetermined concavo-convex...
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7477485 |
Information recording medium, recording/reproducing apparatus, and stamper
On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface side of a...
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7476454 |
Substrate for magnetic recording medium
Provided is a surface-treated substrate in which the roughness of the surface of the substrate is controlled. The surface-treated substrate can form a magnetic recording medium in which head flying...
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7471484 |
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...
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7470476 |
Glass substrate for magnetic recording medium and method for manufacturing the same
A glass substrate for a magnetic recording medium is formed to have a disc shape and includes ridge shaped textures 13 extending along concentric circles on a main surface. When measuring a 10...
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7468214 |
Tilted magnetic recording media
A tilted magnetic recording medium comprises a layer of magnetic material having a magnetic easy axis defined by tilted alignment of a particular crystalline phase of the magnetic material. A film...
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7466515 |
Magnetic medium having a soft underlayer with a magnetic anisotropy
A magnetic medium for perpendicular magnetic data recording. The magnetic medium has a magnetically soft under-layer and a magnetically harder top layer. The magnetic under-layer has a magnetic...
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7464411 |
Copy protection for optical discs
A method of copy protecting optical discs uses the differences in capability between the encoder associated with a laser beam recorder and that in currently available CD writers. Digital sum value...
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7459097 |
Method of forming a conductive pattern
A method of forming a conductive pattern can form a conductive pattern where the aspect ratio of the height to the width is high with favorable electrical connectivity. The method includes a...
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7457064 |
Perpendicular magnetic recording medium, method of evaluating magnetic properties of the same
Embodiments in accordance with the present invention provide a perpendicular magnetic recording medium which is easy to record, offers superior thermal stability of recording magnetization, and...
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7448727 |
Ink jet recording head and ink jet recording apparatus
The invention provides an ink jet recording head in which an element substrate provided in a head unit and constituted of plural drive elements is driven to discharge ink droplets from plural...
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7446969 |
Thermally assisted recording system
A thermally assisted magnetic recording system is provided to achieve excellent thermal resistance and low noise. In one embodiment, a magnetic recording medium is used, in which the magnetic...
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7448055 |
Disk assembly having integral clamp and/or spacer
A composite disk-clamp assembly including a clamp or spacer of a resilient material coupled to a disk by injection molded plastic so that the clamp forms an integral portion of the disk itself.
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7443634 |
Asymmetrical storage disk for a disk drive
A storage disk for a hard disk drive includes a homogeneously-formed body region, a first side region and a second side region. The body region includes a first body side and a second body side...
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7440233 |
Magnetic recording medium and information reproducing apparatus
The present invention provides a magnetic recording medium with a reduced tendency for a free layer to become thicker near an outer periphery than near an inner periphery of a recording zone as...
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7423841 |
Discrete track magnetic recording medium with lift-adjusting surface
A magnetic recording medium capable of preventing contact with a magnetic head for use in recording or reproduction, during recording or reproducing of record data. The magnetic recording medium...
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7423842 |
Magnetic recording medium having servo and data track regions with different arithmetical mean deviations
A magnetic recording medium including at least a disk substrate 1 A, a magnetic recording layer 5 formed with a predetermined concavo-convex pattern on the disk substrate 1 A, and a...
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7419730 |
Magnetic recording disk with antiferromagnetically coupled master layer including copper
An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The...
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7409759 |
Method for making a computer hard drive platen using a nano-plate
Provided is a method and system for manufacturing a hard drive platen. The method includes depositing two or more types of film around a central core to form a plurality of film layers, each film...
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7406605 |
Information recording medium, manufacturing method of its recording medium, information process unit and copyright management system
Medium individual information formed an information recording medium is obtained, and a management key used for recording or regeneration on the information recording medium corresponding to the...
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7403353 |
Magnetic recording and reproducing system with recording layer having predetermined convex-concave pattern
The invention is directed to a magnetic recording/reproducing system wherein each burst pattern in discrete media is configured in a substantially trapezoidal shape (truncated quadrangular pyramid...
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7397624 |
Transducers for ferroelectric storage medium
A ferroelectric transducer for use with a ferroelectric storage medium includes a read electrode. The read electrode emits a current when a polarity orientation of the read electrode is opposite a...
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7394622 |
Magnetic recording media with discrete tracks of magnetic material in a magnetically soft underlayer
A magnetic recording medium comprises a magnetically soft underlayer having a plurality of cavities in a surface thereof, and a magnetic recording material in the cavities, wherein a surface of the...
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7391592 |
Magnetic recording medium including a diamond-like carbon protective film and at least two additional elements
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...
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7385785 |
Magnetic recording medium and magnetic recording and reproduction apparatus
A magnetic recording medium is provided, which includes a recording layer formed in a concavo-convex pattern to achieve high areal density and can ensure good recording and reproduction...
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7368186 |
Master carrier for magnetic transfer
The master carrier for magnetic transfer of the invention comprises a support and a magnetic layer formed on the surface of the support, wherein an uneven transfer pattern that corresponds to the...
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7352529 |
Magnetic recording medium and magnetic recording and reproducing device using a magnetic recording layer formed with a predetermined concavo-convex pattern
A magnetic recording medium including at least a disk substrate 1 A, a magnetic recording layer 5 formed with a predetermined concavo-convex pattern on the disk substrate 1 A, and a...
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7351445 |
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...
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7339764 |
Method of designing patterned magnetic recording medium and patterned magnetic recording medium
A method of designing a patterned magnetic recording medium including a magnetic film with perpendicular magnetic anisotropy which is patterned into dots form includes steps of setting values to...
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