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7235313 |
Magneto-optical recording medium, method of manufacturing magneto-optical recording medium, method of recording on magneto-optical recording medium, and method of reproduction from magneto-optical recording medium
A magneto-optical medium has a recording layer having a plurality of columns extending in a lamination direction, and a reproduction layer which is placed below the recording layer and which...
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7169454 |
Multi-stack optical data storage medium and use of such medium
A description is given of a multi-stack optical data storage medium ( 20 ) for rewritable recording using a focused radiation beam ( 30 ) entering through an entrance face ( 16 ) of the medium ( 20...
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7050361 |
Magneto-optical storage medium and optical disk drive
A magneto-optical storage medium that protects against the effects of cross-talk, making it possible to further reduce the level of track density, and which also makes it possible to conduct...
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6898158 |
Information recording medium and information recording and reproducing slider
An information recording medium including an information recording film made of an exchange-coupled multilayer film capable of magnetically reproducing a recorded information, wherein the...
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6802073 |
Magneto-optical recording medium
Disclosed are magneto-optical recording media including at least a reflection layer, a recording layer and a dielectric layer laminated on a substrate in this order, wherein the thickness of the...
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6687197 |
High density information recording medium and slider having rare earth metals
An information recording medium comprising an information recording film formed on a base on which regular depressions and projections having Ra of 0.1 to 1.5 nm have been formed, the information...
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6660404 |
Magnetooptical recording medium including a connection layer that is non-magnetic by itself at room temperature but can be induced to exhibit magnetism when in contact with a magnetic layer
A magnetooptical recording medium comprising at least a reproduction layer, an intermediate layer, a connection layer and a recording layer, wherein the reproduction layer and intermediate layer...
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6630252 |
Magneto-optical recording medium comprising four magnetic layers
An MO disk includes a readout layer, an intermediate layer and a recording layer each of which is made of a rare earth-transition metal amorphous material. The MO disk also includes a fourth...
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6538960 |
Magneto-optical recording medium having a metal heat dispersion layer
A magneto-optical recording medium, which is for recording and reproduction of information by focusing of light of a wavelength/numerical aperture of about 1000 nm or less, has a light transmitting...
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6496450 |
Optical recording/reproducing apparatus, optical rotating recording medium, and method of designing optical recording/reproducing apparatus
An optical recording/reproducing apparatus accessing a recording layer of an optical rotating recording medium using an accessing means positioned a predetermined gap away from a surface of said...
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6381200 |
Flash layer overcoat for first surface magneto-optical media
Front surface magneto-optical (FSMO) information storage and retrieval media having improved tribological properties when used in high-density storage devices employing very small head flying...
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6373792 |
Reduction of a temperature in a lubricant interface
A data storage system including a source of heat, a substrate, a storage layer, a lubricant layer, a flying head, and a dielectric layer is disclosed. The dielectric layer is disposed between the...
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6228482 |
Magneto-optic recording medium with reduced demagnetizing field threshold
A magneto-optic recording medium having a reduced demagnetizing field threshold incorporates a thin recording layer having a thickness of less than or equal to approximately 15 nm, and preferably...
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6200673 |
Magneto-optical recording medium
A magneto-optical recording medium having a substrate and a magnetic layer composed of at least a recording layer and a supporting layer and being capable of retrieving information by utilizing the...
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6177175 |
Magneto-optical medium utilizing domain wall displacement
Disclosed herein is a magneto-optical medium of the type that information recorded therein is reproduced by displacing a domain wall, the medium comprises a substrate, and a magnetic layer provided...
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6139949 |
Magneto optical recording medium
A magneto-optical recording medium in which information can be overwritten by a magnetic field modulation method, is provided with a magnetic thin film satisfying an inequality t×M s <5...
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6132862 |
Magneto-optical recording medium
A magneto-optical recording medium comprising a light-transmitting substrate 1 on which a dielectric layer 2, a memory layer 3 having perpendicular magnetic anisotropy, an intermediate layer 4...
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6044044 |
Magneto-optical recording medium having an enlarged magnetic domain in the amplifier layer during read-out
A magneto-optical recording medium comprises a substrate, and a magnetic multilayer 4 on a surface side thereof. The magnetic multilayer comprises an amplifying layer A 1 and a recording layer R 2...
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5989705 |
Magneto-optical recording medium
A magneto-optical recording disk includes a recording layer for recording information as a mark and a reproduction layer, laminated with the recording layer, to which magnetization direction of the...
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5985436 |
Magneto-optical recording medium, magneto-optical recording method, and magneto-optical recording apparatus
A magneto-optical recording medium including at least a recording layer, and an auxiliary recording layer which achieves magnetostatic coupling with the recording layer. The auxiliary recording...
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5958575 |
Magneto-optical recording medium
A magneto-optical recording medium is disclosed in which magnetic layer has a multi-layer structure consisting of an artificial lattice film constituted by a Co layer and a Pt layer and/or a Pd...
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5935701 |
Super-resolution magneto-optic recording medium using in-plane magnetic film and information reproducing method using the medium
A magneto-optic recording medium of the present invention has a transparent substrate. A reproducing layer is stacked on the substrate, and remains in an in-plane magnetic state at room temperature...
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5932364 |
Magneto-optical recording medium, method of recording and reproducing information in and from said magneto-optical recording medium and method of producing said mageto-optical recording medium
A magneto-optical recording medium according to the present invention comprises a recording layer in which information is to be recorded; and a reproducing layer to and from which information...
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5914915 |
Magneto-optical disk system having an objective lens with a numerical aperture related to the thickness of the protective layer
An magneto-optical disc system includes an magneto-optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the...
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5910932 |
Optical disk and optical disk system with numerical aperture of objective lens related to protective layer thickness of optical disk
An optical disc system uses a rewritable optical disc with a light-transmitting cover and an objective lens for bundling or focusing a light beam on a recording layer of the optical disc in order...
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5901118 |
Magneto-optical recording medium having a readout layer and a recording layer
A magneto-optical recording medium having a substrate whereupon a transparent dielectric layer, a readout layer showing in-plane magnetization at room temperature and perpendicular magnetization...
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5853872 |
Magneto-optical recording medium
A magneto-optical recording medium having, in the following order, a substrate, a magneto-optical recording layer having a Curie temperature of not less than 220° C., and a reflective layer mainly...
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5814400 |
Magneto-optical recording medium and method
A magneto-optical recording medium comprises in combination: a magneto-optical recording layer capable of writing or erasing information by a laser beam and an external magnetic field and of...
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5786078 |
Magneto-optical recording medium
A magneto-optical recording medium comprising a transparent substrate, a first dielectric layer on the substrate, a magneto-optical recording layer on the first dielectric layer and a metal...
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5757733 |
Optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer
A magneto-optical disc system includes a magneto-optical disc 40 with a light-transmitting cover layer 41, an objective lens 2 for bundling or focusing a laser beam onto a magnetic recording layer...
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5751670 |
Magneto-optical disk having variable thickness recording layer but adequate uniform reflectance value
A magneto-optical disc includes a disc-shaped transparent substrate, a recording layer formed on the substrate for extending from an inner diameter to nearly an outer most diameter, and an outer...
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5700567 |
Magneto-optical recording medium
In a magneto-optical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, and a metal reflective layer stacked on a substrate, the second dielectric...
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5667887 |
Magneto-optical media
The present invention relates to a magneto-optical media. More particularly, the present invention relates to a device for assuring a high S/N ratio by controlling the optical phase difference of...
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5667862 |
Magneto-optical disk
A magneto-optical disk having a four-layer structure formed of a first protective dielectric layer, a recording magnetic layer, a second protective dielectric layer and a reflective metal layer is...
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5663936 |
Magneto-optic recording medium suited for mark edge recording system and having magnetic layer made of composition modulated material
A magneto-optic recording medium with a transparent substrate, a first dielectric layer above the transparent substrate, a magnetic layer above the first dielectric layer, a second dielectric layer...
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5644555 |
Multiple data surface magneto-optical data storage system
An optical data storage system comprises an optical disk drive and a multiple data surface magneto-optical medium. The medium comprises a substrate, a first dielectric layer, a first...
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5626965 |
Magnetooptical recording medium
A magnetooptical recording medium includes a substrate formed with a guide groove for tracking a laser beam, and first and second magnetic layers which are stacked on the substrate and each of...
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5617378 |
Magneto-optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer
An magneto-optical disc system includes an magneto-optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the...
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5610880 |
Optical disc system and optical disk therefor
An optical disc system using an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the optical disc in order to perform...
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5593790 |
Interference super-resolution using two magnetic layer construction
A magneto-optic recording medium having two magneto-optic layers exchange-coupled to each other. The Curie temperature, T C1 , of the first layer is less than that of the second layer, T C2 . The...
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5589282 |
Magneto-optical recording medium
Disclosed is a magneto-optical recording medium capable of high-density recording with low noise level and a high readout signal level. The recording medium of the invention consists of a...
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5587990 |
Optical disc system and optical disc therefor
An optical disc system using an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the optical disc in order to perform...
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5585197 |
Magneto-optical recording medium having a rave earth-transition metal alloy layer, a rave earth layer, a rare earth oxide layer, and a SiN layer
In a magneto-optical recording medium having a substrate, a recording layer having at least a rare earth-transition metal alloy film formed on the substrate, and a dielectric layer formed on the...
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5577021 |
Optical and magnetooptical recording medium having a low thermal conductivity dielectric layer
An optical recording medium comprises a transparent substrate, a first dielectric layer, a recording layer, a second dielectric layer and a reflecting layer stacked in this order, wherein said...
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5576102 |
Magneto optical recording medium
A magneto optical recording medium comprising the following elements has been developed: a substrate; an interference layer of tantalum oxide having 500 to 1,200 Å in thickness and formed...
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5573847 |
Magneto-optic disk exhibiting a phase shift between plus and minus twelve degrees and a reflectivity between fifteen and twenty-five percent
An optimal structure for a quadrilayer magneto-optic data storage medium is described. The structure has superior characteristics of signal to noise, reflectivity, ellipticity, write sensitivity,...
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5565278 |
Magneto-optical recording medium
A magneto-optical recording medium includes a magneto-optical layer, a reflection layer and an inorganic dielectric layer interposed therebetween. The dielectric layer is extremely thin so that it...
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5560998 |
Magneto-optical recording medium
A magneto-optical recording medium, comprising a substrate, a magneto-optical recording layer on the substrate, a transparent thermally-insulating layer of one selected from the group consisting of...
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5547773 |
Magnetooptic recording medium
A magnetooptic recording medium is composed of a transparent substrate, first and second magnetic layers and a reflecting layer. The first magnetic layer is formed on the transparent substrate and...
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5538801 |
Magnetooptical recording medium
A magnetooptical recording medium of good durability and increased reproducing output comprising a substrate and a coating type magnetic layer with a thickness of not larger than 0.5 μm which is...
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