Matches 401 - 450 out of 552 < 1 2 3 4 5 6 7 8 9 10 11 12 >
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5532032 Recording method for an optical recording medium  
An optical recording medium has a substrate and a recording film, which containes coloring matter, provided on the substrate. The recording film is irradiated with a laser beam passing through the...
5532998 Optical spectroscopic information storage  
An optical data storage system is disclosed in which information is encoded and decoded in the spectrally resolved optical properties of the storage medium. An optical storage medium scatters an...
5523140 Optical recording method and medium  
A phase change type optical recording medium has a recording layer of a recording material containing elements A, B, and C wherein A is Ag and/or Au, B is Sb and/or Bi, and C is Te and/or Se....
5516568 Optical recording medium  
There is disclosed an organic optical recording medium with high data storage density, high data rates and long data archival capabilities, useful as a medium for recording a variety of information...
5510164 Single-sided ablative worm optical disk with multilayer protective coating  
A single-sided ablative write-once optical disk is usable without a protective cartridge. The disk includes the conventional radiation-transparent polycarbonate substrate that has one surface...
5508087 Organic-optic recording tapes  
An organic-optic recording tape of higher capacity and higher packing density of data. This tape comprises a backcoating layer, a base film coated on the backcoating layer, and a complex functional...
5503889 Optical recording medium and production thereof  
An optical recording medium has a substrate, a recording layer having a bare portion at the end face, and a protecting layer. The bare portion of the recording layer and the vicinity thereof are...
5500266 Spin-coating compensation for an optical storage medium with a substrate groove profile gradient  
When a dye material layer is spin-coated on an optical storage medium of the type having grooves fabricated in a substrate thereof, the dye material layer surface has depressions in the vicinity of...
5496608 Optical recording medium  
An optical recording medium formed from a transparent substrate, an enhancement layer formed on the substrate, a guide layer, an interference layer, a recording layer, a protective layer, and a...
5494778 Optical recording medium  
An optical recording medium which has a recording medium and a light reflective film on a substrate. A top coat film made of organic material for adjusting reflectivity is formed on a surface of...
5488597 Multilayer optical memory with means for recording and reading information  
A multilayer optical memory has interleaved optical recording media layers and control layers. In a transmissive system, the recording media layers are sensitive to the polarization (linear or...
5486396 Optical recording medium and production thereof  
An optical recording medium comprises a substrate, a recording layer overlying the substrate in a manner such that it is not present at the inner and outer peripheral portions of the substrate, a...
5479394 Optical recording medium, recording system and reproducing system  
An optical recording medium includes in sequence a transparent substrate, a light-reflecting layer, a transparent intermediate layer and a light-absorbing layer. The light-reflecting layer, the...
5474874 Optical recording medium  
An optical recording medium has a transparent substrate with a recorded pattern formed thereon and a saturable absorption dye containing layer disposed on the recorded pattern and containing at...
5475673 Optical recording medium for use with a laser recording beam  
Recording media having a back coat and a recording layer on opposite sides of a substrate and a super coat adsorbed onto the back coat and/or the recording layer are disclosed. The super coat...
5473594 Optical pickup device using optical lens coated with antireflection film whose spectral reflectance changes in accordance with wavelength  
An optical pickup device capable of maintaining a sufficient amount of laser beam light when recording information on an optical disc and stabilizing the light emission of the semiconductor laser...
5472758 Optical recording medium for short-wavelength of laser beam and read/write/erase method using the medium  
An optical recording medium of a data rewritable type includes: a substrate; a first transparent dielectric layer formed on the substrate, having a refractive index substantially equal to the...
5470627 Double-sided optical media for a disk storage device  
A double-sided optical storage disk comprises a single substrate having a microstructure formed on each side surface thereof. The microstructure is in the form of grooves or pits arranged in a...
5459018 Optical information recording medium, a manufacturing method thereof and an optical information recording and reproducing method using the medium  
Described is an optical recording medium having a mixture or integrated layers of a metal and an oxide which react with each other under an exothermic reaction at a high temperature upon receiving...
5458940 Optical disk with vibration dampening  
A single recording side magneto-optic disk has improved dampening characteristics for rotation at high speeds such as 3,000 rpm or greater. A dampening layer is secured to the recording side. The...
5455818 Optical recording medium  
An optical recording medium affording a maximum Kerr effect enhancement, yet exhibiting a good signal-to-noise ratio, includes, for example, a substrate, an interference layer, a tracking guide...
5453975 Optical disc with surface coating and manufacturing method therefor  
An optical disc includes a recording film formed on one surface of a disc-shaped plastics substrate having light transmission properties, and a coating film formed on the other surface of the...
5436113 Information recording medium  
Disclosed is an information recording medium having a recording layer which contains a phenol type compound. This information recording medium therefore exhibits very excellent effects in light...
5436885 Optical disc and optical system for reproducing the optical disc  
An optical disc has a recording film with information recorded thereon, and a photochromic material film provided adjacent the recording film. The photochromic material film is made of a...
5434840 Non-linear reflectance optical information recording layer irradiated by a light beam controlled with an amplitude filter  
Disclosed is an optical disk player capable of suppressing the influence of side lobes of an irradiated spot on the reflected light from an optical disk, thereby ensuring an improved...
5434844 Magneto-optical recording media and magneto-optical recording device using the same  
This invention provides a magneto-optical recording medium comprising at least an information storage layer and a readout layer disposed on the substrate, the information storage layer being used...
5431978 Information recording medium and recording method using the same  
According to this invention, there is provided an information recording medium including a substrate, a metal layer formed on the substrate, and a recording layer formed on the metal layer and...
5427893 Optical data recording medium  
This invention is related to an optical data recording medium of a high reliability and a large capacity, preventing moisture absorption and swelling of a resin layer formed on one side of a...
5428599 Optical recording medium, information recording method and information reproducing method  
An optical recording medium includes in sequence a transparent substrate, a light-reflecting layer, a transparent intermediate layer and a light-absorbing layer. The light-reflecting layer and the...
5425016 Digital laser encoder/recorder/player, utilizing ellipsoidal memory medium  
A rotatable memory medium having a memory surface of ellipsoid surface defining two foci. A laser beam is directed to one focus and then reflected to the memory surface, and from the latter to the...
5419999 Optical recording medium and recording/reproducing method therefor  
An optical recording medium and a recording method therefor in which a recording layer group and a light-absorbing and heat-generating layer for absorbing radiated light to convert the absorbed...
5420846 Recording medium having a plurality of nonlinear transmission characteristics  
An information recording medium includes an information recording layer on which at least information is to be recorded by irradiating light, and a light transmission restricting layer which has a...
5406544 Low cost substrate for bump-forming recording media  
Write-once and erasable recording media (1) and a method of manufacturing such media. According to one aspect of the invention, one or more active layers (26, 30) of the optical data storage medium...
5400317 Method of coating a workpiece of a plastic material by a metal layer  
An optical storage disk has a body made of PMMA bulk material with a surface of PMMA. Aluminum or an aluminum alloy, light reflecting layer coats the PMMA surface and is applied using a sputtering...
5398232 Optical recording medium with prepit areas having reflectivity higher than land areas  
An optical recording medium is provided with optical guide grooves and prepits representing for example address data, in a land portion sandwiched between the grooves. The reflectivity in the...
5396483 Recording medium having a track and electrode layer provided and recording and reproducing device and system using same  
A recording medium is prepared by irradiating an electron beam on a substrate following a certain pattern, then vapor depositing a metal onto the substrate to form a track comprising ultra-fine...
5391462 Otical record disk  
In an optical recording disk comprising a substrate, a dye base recording layer, and a reflective layer, the recording layer contains a metal complex having a center metal, and the reflective layer...
5382463 Data storage media  
Optical recording tape has a backcoat providing a surface texture designed to impart high static friction between the opposite faces of the tape to enable the tape to maintain pack integrity during...
5364735 Multiple layer optical record medium with protective layers and method for producing same  
An optical recording medium in which a recording layer (4) on which optically readable data are recorded is formed on a rectangular base material (1), a protective layer (5) is formed by roll...
5345436 Recording medium of flat surface with resin filled ring grove  
The present invention discloses a disc having an information signal surface on which a replica of information signals is formed by a stamper provided in a metal mold, and a manufacturing method of...
5340631 Clathrate inclusion compounds and optical recording medium using the same  
A clathrate inclusion compound consisting essentially of a cyanine dye and organic host molecules including the cyanine dye therein is described. By the inclusion, the degradation of the cyanine...
5331625 Optical disc with antistatic coating containing tin oxide and phosphorous  
An optical disc comprises an antistatic film of light transmission properties which is formed of a synthetic resin, includes a tin oxide with a phosphorous as electro-conductive filler and is...
5325351 Optical recording medium having a reflective layer made of Cu-Ag or Cu-Au alloy  
In an optical recording medium comprising a recording layer on a substrate, a reflective layer in the form of a Cu-Ag or Cu-Au alloy thin film is formed on the recording layer. The Cu-Ag alloy...
5315573 Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity  
An information recording medium for suppressing the interferences of bits before and after reproduction and improving the optical resolution with saturable absorber 102 disposed adjacent or in an...
5313452 Optical recording disk  
In preparing an optical recording disk by spin coating a dye-containing solution to an annular substrate to form a recording layer thereon, a circular channel is preformed in the substrate in...
5305300 Magneto optical storage device using a multi-layer film of Pt/Co laminated sections  
A magneto-optical storage device having a configuration wherein a first AlN film, a Pt/co multi-layer film formed by alternately depositing Pt and Co, a second AlN film, and an Al reflective film...
5305301 Optically readable record carriers  
A record carrier has a spiral track in which sound and/or video information is stored formed on a transparent substrate and covered by a reflecting layer of metallic material for reflecting a...
5292616 Optical card of closed type  
A technique of an optical card having high information recording density. A specially superior writing characteristic is required for an additional recording optical card among optical cards. In...
5292568 Optical disk having a hard coat layer  
An optical disk includes a resinous substrate and a recording layer thereon. A hard coat layer containing conductive particles is provided on a light incident side of the substrate for protecting...
5279877 Magneto optical disc  
A protective coating made of resin, preferably a radiation curable resin containing fluoroplastic fine particles having a low surface energy is provided in the form of the uppermost layer facing a...
Matches 401 - 450 out of 552 < 1 2 3 4 5 6 7 8 9 10 11 12 >