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6221454 |
Bonded optical disks and a method and an apparatus for producing the same
A bonded optical disk comprising first and second transparent substrates bonded with a light-permeable, pressure sensitive adhesive layer and at least one information recording layer wherein the...
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6221455 |
Multi-layer optical disc and recording/reproducing apparatus
A multi-layered optical disc having superior recording/reproducing characteristics, in which the recording density in three-dimensional direction can be increased to increase the recording...
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6217969 |
Sputtering target disk
A sputtering target disk is provided which is comprised of a sintered silicon carbide having a density of 2.9 g/cm 3 or more and obtained by sintering a uniform mixture of a powder of silicon...
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6214431 |
Optical data storage materials for blue-light DVD-R
The present invention provides a new category of information storage material, nonstoichiometric metal-organic complex Ag 1 -β (TCNQ), which is particularly suitable for digital video disc (DVD-R)...
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6214432 |
Method for controlling the bonding layer thickness in an optical storage apparatus and optical storage apparatus resulting therefrom
A method for controlling the bonding layer thickness between facing surfaces of two optical discs having information areas during manufacture of an optical storage apparatus wherein a plurality of...
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6214429 |
Disc substrates for information recording discs and magnetic discs
Disclosed is disc substrate consisting of SiO 2 --Al 2 O 3 --RO (RO=divalent metal) glasses having high specific elastic modulus of 36×10 6 Nm/kg or more or high Young's modulus of 110 GPa or...
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6214430 |
Disc recording medium and method of fabricating the same
A disc recording medium that is capable of being rotated at a high speed to improve an information transfer rate. The recording medium has a residual stress acting as a tensile force. An annular...
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6207247 |
Method for manufacturing a molding tool used for sustrate molding
The invention relates to methods for making mold tools. More particularly, the mold tools are used for molding a resin substrate which has fine pits, i.e., concavities and protuberances. The...
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6203877 |
Optical information recording medium
A phase-changing optical disk solving the problem of difference in recording sensitivity between the land and groove without complexing configuration of the recording device or optical disk...
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6197399 |
Recording medium and method of manufacturing the same
A recording medium comprising a hydrophilic film formed on a substrate, recording domains formed directly on the hydrophilic film so as to form a predetermined pattern, each recording domain being...
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6194045 |
Rigid disc substrate comprising a central hard core substrate with a hard, thermally and mechanically matched overlying smoothing layer and method for making the same
A rigid magnetic memory disc (28) is disclosed having a substantially flat, central hard core substrate (12) and an overlying smoothing layer (14) deposited thereon. The smoothing layer (14) is...
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6194046 |
Optical recording medium and manufacturing method thereof
An optical recording medium having sufficient repetition recording durability and its manufacturing method. A first dielectric layer 2 is layered on a major surface 1a of a substrate 1, and a...
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6190749 |
Hydroxyethyloxymethyl terminated perfluoropolyethers for lubrication of discs in information storage systems
An information storage system including a perfluoropolyether lubricant having hydroxyethyloxymethyl terminated endgroups on the surface of a rigid storage medium is provided. In the subject...
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6190748 |
Optical discs
A method of manufacturing an optical disc master includes preparing the surface of a glass master plate (2) with an adhesion promoter 4. A photoresist layer (6) is coated on the adhesion promoter...
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6190750 |
Rewritable optical information medium
A rewritable single-sided double layer optical information medium having a first recording stack with a phase change recording layer sandwiched between two dielectric layers. The recording stack is...
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6183828 |
Plating on nonmetallic disks
The invention is a method of plating a nonmetallic substrate comprising the steps of depositing an adhesion enhancing film on the substrate, treating the adhesion enhancing film to make the film...
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6183827 |
Lid particularly for foodstuff containers and process used for its manufacture
A lid for foodstuff containers includes a shell shaped so that it can be fitted over an opening in a container, and a PVC-free seal, bearing an inscription, attached to the bottom of the shell and...
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6180200 |
Cationic and hybrid radiation curable pressure sensitive adhesives for bonding of optical discs
Cationic and hybrid radiation-curable pressure sensitive adhesive compositions for digital versatile discs and other substrates, a method for bonding versatile digital disc layers together with a...
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6177168 |
DVD disc with four information layers, and method for making same
A method for making a DVD-18 disc using primarily just conventional CD-type injection molding and sputtering equipments. Three substrates are molded. Each of two of the substrates has just one...
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6168841 |
Label adapted for use on optical disks
A label adapted for use on optical disks including an adhesive portion and an edge strip portion formed near the edges of the label and a release paper. After tearing off the edge strips of the...
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6169721 |
Two-disc laminated optical recording medium
An optical recording medium has a substrate having an annular grooves, a recording layer including an organic coloring matter and formed on the substrate, and a metallic reflection layer. The...
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6165580 |
Optical recording medium
An optical recording medium includes a substrate having light transmission properties, which has laminated on a main surface thereof a recording layer and a metal reflection layer. The recording...
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6165579 |
Optical information recording medium and recording/reproduction method
Focusing and tracking can be stably performed using an optical information recording medium in which a high reflectivity and a large reflective change amount can be attained, and the reflectivity...
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6162519 |
Optical disc and process for the production of the same, and process for the production of sheet material
To provide an optical disk with high mass producibility and excellent optical properties, mechanical precision, and mechanical strength, as well as a method for the simple and efficient...
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6159571 |
Phase-change optical disc
A phase-change optical disc that is adapted to weaken a self-sharpening effect and to be driven by a pulse width modulation system. In the disc, a dielectric layer formed on the surface of a...
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6156435 |
Chemical vapor deposition of fluorocarbon polymer thin films
Provided are methods for forming a fluorocarbon polymer thin film on the surface of a structure. In one method, a monomer gas is exposed to a source of heat having a temperature sufficient to...
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6149999 |
Method of designing a phase-change optical recording medium, and a phase-change optical recording medium
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6148542 |
Method for curing an adhesive between two layers of an information carrier
A method of manufacturing an information carrier which cures an adhesive by means of UV radiation in an inert-gas atmosphere. The adhesive is interposed as an adhesive layer between two superposed...
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6146734 |
Optical recording disk and method for manufacturing the same
The present invention is to provide a method for manufacturing the PCE optical information recording disk under control of not only the crystallization velocity but also the complex index of...
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6146732 |
Thermal pack having a plurality of individual heat cells
The present invention relates to disposable thermal packs comprising a unified structure having at least one continuous layer of a semirigid material which softens when heated. The thermal packs...
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6143391 |
One-piece, dual-material suction cup
A one-piece, dual-material suction cup includes an inner face having a concave shape when the cup is inactive (that is, unattached to a surface) and an outer portion having a convex shape when the...
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6139933 |
Optical recording medium comprising a cross-linked buffer layer
The invention relates to an optical recording medium, in particular to a compact disc, comprising the following layers: a) a transparent substrate with a spiral having an indented or protruding...
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6132843 |
Glass substrate for magnetic disks
A glass substrate for a magnetic disk of the present invention is one in which a laser beam is irradiated on a main surface thereby forming a large number of protrusions thereon to form texture...
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6129968 |
Phase change recording medium and method for recording therein and reproduction therefrom
Disclosed is a phase change recording medium comprising a crystal section and an amorphous section, characterized in that the difference in reflectivity between the crystal section and the...
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6124012 |
Solid phase extraction disk and apparatus for enhanced recovery and precision
In accordance with the invention, an SPE extraction apparatus is provided with a new SPE disk which eliminates radial wicking and weeping and new disk holding apparatus which minimizes the indirect...
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6120870 |
Optical disk and production method thereof
An optical disk having high density and excellent quality as well as compatibility with conventional disks is provided. This optical disk is comprised of a disk-shaped substrate formed with a...
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6117512 |
Optical information medium and manufacturing method therefor
An optical information mediumis made up of a transparent substrate, on which are formed a dye recording layer of at least one dyestuff, a reflective layer of metal, and a protective layer in...
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6117511 |
Optical recording media
An optical data recording medium utilizing reversible inter-crystalline-amorphous phase changes for recording, reproducing and erasing data as phase changes of a recording film caused by laser beam...
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6117284 |
Dual-layer DVD disc, and method and apparatus for making same
A dual-layer DVD disc that does not require a stamping step (typically, as part of the 2P prior art manufacturing process) during its manufacture. A polycarbonate substrate is molded and coated...
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6114001 |
Optical information recording medium, and method for fabricating it
In an optical recording information recording medium of a structure having protection layers on both surfaces of a recording layer, overwrite cyclability is improved without deteriorating the...
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6110556 |
Lid assembly for a process chamber employing asymmetric flow geometries
A chemical vapor deposition (CVD) system of the type having an enclosure housing a process chamber and a supply of cleaning gas, features a lid having a base plate with opposed first and second...
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6111849 |
Phase change optical recording medium, method of overwriting same and recording system for the overwriting
An optical recording medium comprising a substrate, at least one dielectric layer and a phase change type recording layer. In overwriting, the recording medium should satisfy the condition V OW /V...
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6106919 |
Phase change media compatible with air bearing flying head
An phase change optical medium compatible with a flying head can include a substrate, a reflective layer, a first dielectric layer, a phase change information carrying layer, a second dielectric...
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6103331 |
Optical recording medium comprising organic dye thin film
This invention provides an optical recording medium complying with the DVD standards, having high sensitivity, possessing high dye film stability, having a high C/N ratio during high density...
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6103348 |
Plastics shaped part with a plurality of fields, and method and device for the manufacture thereof
A plastic molding with a plastic carrier (62) comprises several regions (50, 52, 54) separated from one another, at least some of these regions (50, 52, 54) being provided with optionally different...
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6103330 |
Optical recording medium and fabrication method therefor
The invention provides a method of fabricating an optical recording medium comprising a phase change type recording layer containing at least one element selected from In, Ag, Te and Sb. The...
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6099930 |
Methods for marking digital compact discs as a means to determine its authenticity
A digital recording medium, such as a compact disc, having a substrate, a reflective layer and a protective layer includes a near infrared fluorophore in one of the layers. The near infrared...
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6096399 |
Optical recording medium
A phase change type optical recording medium of Ge--Sb--Te system wherein number of overwritable operation has been increased is provided. The optical recording medium has a substrate and a...
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RE36806 |
Internally damped rotatable storage article
The present invention provides a method for internally damping a rotatable storage article which is subject to resonant vibrations. More specifically, the present invention provides a method of...
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6090475 |
Polishing pad, methods of manufacturing and use
The present invention is directed to polishing pads useful in determining an end to the useful wear life thereof. In a simple embodiment of the present invention, a polishing pad that is used with...
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