Matches 251 - 300 out of 553 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
5989671 Optical recording medium and manufacturing method thereof  
An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer. The light-reflective magnetic layer which...
5985400 Method for forming a protective barrier layer on an optical memory disc substrate  
A method for forming a protective barrier layer between the active dye layer and the disc substrate during production of an optical memory disc is provided wherein a pre-treatment/pre-coat solution...
5981014 Optical recording medium and method for preparing the same  
An optical recording medium of phase change type with an increased number of overwritable operations and method for preparing such an optical recording medium is provided. In the optical recording...
5976638 Optical recording medium comprising a homeotropically oriented liquid crystalline polymer film comprising dichroic dye  
The invention pertains to an optical recording medium comprising a homeotropically oriented liquid crystalline polymer film having a T g between 75-100° C. and a T c between 110-140° C. and...
5978320 Recording/reproducing apparatus for use with a photomagnetic recording medium  
A recording/reproducing apparatus for use with a photomagnetic recording medium. The apparatus comprises a magnetic coil and an optical system having a numerical aperture (NA) greater than 0.8 and...
5976658 Optical information recording medium  
An optical information recording medium provided on a substrate with a recording layer including a dye layer; wherein the dye layer contains a cyanine dye; and the recording layer enables a...
5976659 Optical disk and method of manufacturing optical disk  
An optical disk can provide a sufficiently wide power margin for a recording power even when the optical disk has a high-recording density. The optical disk has a transparent substrate on which a...
5972457 Optical recording medium  
The present invention relates to a printable optical recording medium comprising: a transparent substrate; and at least a recording layer, a reflective layer and a protective layer, a reflective...
5972459 Optical recording medium and optical disk apparatus  
An optical recording medium is provided which achieves a higher recording capacity. This optical recording medium includes a base formed of thermoplastic resin which has a thickness ranging from...
5972458 Optical recording element with an interfacial layer between the recording layer and the reflecting layer  
A recordable element includes a substrate, an optical recording layer deposited on the substrate, a light reflecting layer deposited over the recording layer and an interfacial layer having a...
5968626 Transmissive optical and magneto-optical data storage media and method of making the same  
An optical data storage medium transmissive to a laser beam and formed of a light transmissive substrate that provides mechanical support, and a light transmissive data substrate formed on the...
5965285 Magneto-optical recording medium and reproducing method for the same  
A magneto-optical recording medium having first magnetic layer and second magnetic layers respectively serving as recording and reproduction layers. When an exchange-coupled force is induced...
5965228 Information carrier, method for producing same  
An information carrier has at least two solid material interfaces at which information is, or may be applied and where the information is stored by local modulation of at least one characteristic...
5962100 Optical information recording medium  
In a rewritable optical information recording medium, a transparent interference layer, a translucent interference layer, a lower protection layer, a recording layer, an upper protection layer, and...
5962126 Method and apparatus for reproducing data from a magneto-optical recording medium having a readout layer, transfer layer and recording layer  
The invention features an apparatus and method for reproducing recorded bits from a magneto-optical recording medium. The medium includes a base, a readout layer formed on the base, a transfer...
5959960 Method of providing a range of conformalities for optical recording layers  
A method of coating an optical recording layer on a transparent grooved substrate is disclosed. The recording layer is coated from a mixture of a primary and a secondary solvent. The solvent...
5952073 Dye composition for optical recording media having selected anions  
A dye composition for use in optical recording media, comprising at least one cyanine dye having an anion selected from the group consisting of thiocyanate, lactate, hypophosphite,...
5952094 Magneto-optical recording medium  
The addition of Os or Re to the Co layers of a magneto-optical recording medium comprising a Co/X multilayer, where X=Pt, Pd, Au, Ni or Ru, results in a reduction of both the Curie temperature and...
5948496 Optical recording medium  
An optical recording medium includes a substrate, a first protection layer formed on the substrate, a recording layer formed on the first protection layer, a second protection layer formed on the...
5945228 Magneto-optical recording medium and method for reproducing thereof  
A magneto-optical recording medium comprises: a readout magnetic film which is perpendicular magneto-anisotropy in a temperature range higher than room temperature and less than a second...
5942303 Resin composition for polymerization casting and optical material  
A resin composition for polymerization casting containing: 20 to 60% by weight of a monomer (1) represented by the formula (1) ##STR1## wherein R 1 stands for a hydrogen atom or a methyl group,...
5942302 Polymer layer for optical media  
A composition suitable for use as a polymer layer disposed on a semi-reflective layer in an optical medium, such as an optical storage medium. The polymer layer includes an acidic component that...
5939163 Optical information recording medium  
An optical information recording medium which records at shorter laser wavelengths and has excellent light resistance and archival stability includes a supporting substrate and a recording layer...
5935672 Reversible optical information medium  
A description is given of an reversible optical information medium comprising a substrate, a first dielectric layer, a phase-change recording layer on the basis of Ge--Sb--Te, a second dielectric...
5935673 Protective coatings for optical disc information recording media, and methods and apparatus for applying same  
To protect the optical surface of optical disc information recording media such as a compact disc (CD) or a digital versatile disc (DVD), that surface is coated with a removable layer of a material...
5932690 Optical recording elements having recording layers exhibiting reduced bubble formation  
The present invention discloses an optical recording element having, in the following order, a transparent substrate, a recording layer and a light reflecting layer wherein the recording layer ...
5925433 Optical recording medium based on Fabry-Perot principle  
The present invention is in the field of optical recording media, and is directed to an optical recording medium which comprises the following layers; a) a grooved transparent substrate (1),...
5914167 Information recording medium with light-emitting area, storage case with light-emitting area for information recording medium, and sheet with light-emitting area for information recording medium  
An information recording medium, a storage case for storing an information recording medium, or a sheet for use with an information recording medium, has a light-emitting area coated with a...
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...
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...
5906874 Optical recording medium, and its fabrication method  
The invention provides a phase change type optical recording medium enabling an increased jitter concomitant with repeated overwriting to be restrained or substantially eliminated. In the optical...
5904969 Optical data recording medium and manufacturing method thereof  
A desired writable optical data recording medium has a transparent substrate 1 where a side wall of a recess is connected to a land surface by a curved surface. A data recording portion of a dye...
5900098 Methods for bonding structurally dissimilar optical discs  
Methods for bonding structurally asymmetrical or otherwise structurally dissimilar optical discs are provided. A bonded optical disc stack is formed from a first and a second optical disc by...
5895697 Optical information medium  
An optical information medium comprises a first disc forming information recording layer on a main surface thereof, a second disc being bonded to the first disc at the surface where the information...
5891542 Optical recording material, and optical recording medium  
One object of the invention is to achieve a phase change type optical recording medium having high degree of modulation and recording sensitivity, and another object of the invention is to achieve...
5883877 Optical disk having a high density recording layer and a low density recording layer  
An optical disk on which information which can be optically read is recorded having a first information recording layer formed in the vicinity of the middle of the direction of the thickness of the...
5882760 Recordable optical disks with metallic interlayer  
A recordable optical disk including a transparent substrate; a recording layer formed over the substrate; a reflective layer formed over the recording layer; and a thin metallic interlayer formed...
5882758 Optical recording medium  
A phase-change type optical recording medium, wherein (1) recording, erasing and reading of information by irradiating light is possible, and the medium has a structure in which a first protective...
5879774 Multilayer laminate elements having an adhesive layer  
Multiple layer laminate element, such as DVD optical recording elements, are disclosed. The laminates include a cured cyanoacrylate adhesive layer in direct contact with a polymeric layer having a...
5879773 Recordable optical disks with dielectric interlayer  
A recordable optical disk including a transparent substrate; a recording layer formed over the substrate; a reflective layer formed over the recording layer; and a thin dielectric interlayer formed...
5876823 Optical information medium, method for producing the optical information medium, and unit for producing the optical information medium  
The optical information medium of the invention includes: a first substrate having a first information signal layer; a first reflective film formed on the first information signal layer of the...
5876821 Tetra dye mixed with another dye or dyes for optical recording elements  
A dye mixture having, at 780 nm, a real refractive index not less than 1.8, and an imaginary part not greater than 0.15 and comprising (a) a tetra dye having a metallized azo dianionic dye with a...
5874132 Multi-layer optical recording medium manufacturing method and apparatus thereof  
An optical recording medium manufacturing apparatus includes transfer means, a substrate transfer table transferred by the transfer means at a predetermined speed, a drum facing the substrate...
5875169 Magneto-optic data storage device having multiple data storage levels  
A magneto-optic data storage device includes multiple data storage levels, each storage level including a transparent dielectric seed layer and a partially transmissive recording layer having a...
5874147 Column III metal nitride films as phase change media for optical recording  
This invention provides phase change media for optical storage based on semiconductors of nitrides of the column III metals. The surface of thin films of these wide bandgap semiconductors may be...
5869163 Optically readable thin film digital data storage medium and playback adaptor  
An optically readable data storage medium includes a thin film data carrier fabricated from first and second juxtaposed plastic layers. A microembossed data surface is positioned within an...
5858498 Information recording medium for manufacturing the medium, and apparatus for manufacturing the medium  
In an optical disk obtained by pasting two substrates, air bubbles and the like are removed from an adhesive layer between the substrates pasted together, and the thickness irregularity of the...
5851621 High-capacity storage media  
The invention relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, which recording layer consists essentially of a dye of the formula (I),...
5851620 Disc metal mold and recorded disc  
Improved disc metal mold provides an improved disc without a ring groove thereon. The improved disc metal mold has a fixed metal mold section and a movable metal mold section for forming a cavity...
5846627 Method for writing and reading data on a multi-layer recordable interferometric optical disc and method for fabricating such  
A recordable compact disc comprises a 0.6 millimeter clear plastic or glass substrate on which is grown a thin-film image layer having several distinct recording planes. Each recording plane is...
Matches 251 - 300 out of 553 < 1 2 3 4 5 6 7 8 9 10 11 12 >