Носитель информации

Metallisierte Azo-ether-farbstoffe für optische Aufzeichnungsschichten

Optisches Aufzeichnungsmedium und optisches Aufzeichnungs/Wiedergabegerät

Informationsträger und Anlage zur Schichtherstellung

Optisches Datenaufzeichnungsmedium und Verfahren zu seiner Herstellung.

VERFAHREN ZUM OPTISCHEN AUFZEICHNEN UND AUSLOESCHEN VON INFORMATION.

APPARATUR MIT OPTISCHEM GEDAECHTNIS UND VERFAHREN ZU DEREN HERSTELLUNG.

OPTISCHES AUFZEICHNUNGSMEDIUM UND HERSTELLUNGSVERFAHREN DAFÜR

Optisches Aufzeichnungsmedium

BILDAUFZEICHNUNGSMATERIAL

Herstellungsverfahren einer optischen Disc, optische Disc und Farblösung

Optisches Aufzeichnungsmedium

Informationsaufzeichnungsmedium, Verfahren zu seiner Herstellung, und Aufzeichnungs- /-Wiedergabeverfahren dafür

Optisches Informationsaufzeichnungsmedium

IMPROVEMENTS RELATING TO OPTICAL DATA STORAGE DISKS

OPTICAL INFORMATION RECORDING MEDIUM

Optical recording member.

An optical recording member (10) has a reflective substrate (14) and a thin dye-in-polymer layer (12) on the substrate, the dye-in-polymer layer (12) being made to be responsive to an optical recording apparatus so that at least the dye portion of that layer will migrate from the areas struck by the optical recording apparatus to expose the reflective substrate. Prior to the recording process, the dye-in-polymer layer (12) forms an anti-reflection layer to cover the reflective substrate (14). An overcoat layer which can be combined into a single support, or a spaced top layer can be provided. ...

OPTICAL RECORDING MEMBER

Coatings

PROCEDURE FOR THE ATTACHMENT OF MARKINGS ON OPTICAL MEDIUM ARTICLES

COMPOSITIONS CONTAINING AT LEAST ONE OXONOL COLORING MATERIAL AND AT LEAST ONE METAL COMPLEX

OPTISCH AUSLESBARE DATENSCHEIBE

OPTICAL PLATE AND MANUFACTURING PROCESS

AZOFARBSTOFFE ON ALKYNYL ANILINE BASIS AND YOUR USE WITH ANIONI METALLIFEROUS ONE AZOKOMPLEXFARBSTOFFEN

RADIATION-HARDENABLE LACQUER FOR OPTICAL PLATES AS WELL AS OPTICAL PLATE

PROTECTIVE FILM FOR AND IT ABSTENTION OPTICAL DISK

INFORMATION RECORDING MEDIA

OPTICAL INFORMATION RECORDING TECHNIQUE AND MEDIUM.

PROCEDURE FOR OPTICAL NOTING AND EXTINGUISHING INFORMATION.

MORE MULTILEVEL SCHUTZUEBERZUG FOR SUBSTRATES, PROCEDURES FOR PROTECTING A SUBSTRATE BY PLASMA DEPOSIT OF SUCH UEBERZUGS, MANUFACTURE UEBERZUEGE AND THEIR APPLICATIONS.

PROCEDURE FOR ITS PRODUCTION OF AN OPTICAL INFORMATION MEDIUM

MANUFACTURING PROCESS OF AN OPTICAL STORAGE MEDIUM AND SUCH A MEDIUM

PHOTONI DATA SEIZURE SYSTEM USING POLYPEPTIDMATERIAL, AND PROCEDURES FOR ITS PRODUCTION

PROCEDURE FOR MANUFACTURING HYBRID DISKS AND HYBRID DISK

OPTICAL STORAGE MEDIUM

FILM FOR OPTICAL COMPONENT, WINDING LAMINATE OF FILM, OPTICAL COMPONENT, AND OPTICAL DISC

ARTICLE HAVING COMPOSITE HARD COAT LAYER AND METHOD FOR FORMING COMPOSITE HARD COAT LAYER

MANUFACTURING AN OPTICALLY READABLE INFORMATION DISK

OPTICAL INFORMATION MEMORY MEDIUM

Polyester carbonate and a data carrier therefrom

OPTICAL INFORMATION MEDIUM AND A METHOD OF MANUFACTURING THE MEDIUM

An optical information medium (20) for recording, such as DVR-blue, and a method for manufacturing such a medium (20) is provided. Reading from and recording onto the medium (20) is performed by means of a focused radiation beam (10) having a radiation wavelength & and a numerical aperture NA. Said medium has a substrate (1), and a stack (2) of layers provided thereon. The stack (2) comprises at least a first recording stack (3) and k radiation beam transmissive layers (4, 5). Each transmissive layer (4, 5) has a refractive index ni and an average thickness di ~m and 1 = i = k and k = 2. The thickness dk of layer k (5) is determined by a simple formula which depends on the parameters ni for i & 1...k and di for i = 1...k-1. Such a medium (20) has zero or substantially zero spherical aberration at the focal point, being at the recording layer of the first recording stack (3), of said radiation beam (10).

OPTICAL DISC AND METHOD OF PROTECTING SAME

An optical disc (10) for storage and retrieval of digital data, and a system and method for protecting the optical disc is disclosed. The optical disc has projections or embossments (12, 14) on one or both surfaces. When the optical disc is placed on a substantially flat surface such as a tabletop or a desktop, the projections act as pedestals that elevate the optical disc above the flat surface. The resulting gap or clearance helps prevent damage to the optical disc caused by contaminants on the flat surface or by defects in the flat surface. The projections are sized to provide adequate clearance between the disc and the flat surface, while minimizing interference between the projections and components of optical disc readers and drives. The optical disc may also include one or more depressions that are sized and configured to receive projections from another disc, which facilitates stacking of the optical discs.

OPTICAL STORAGE SYSTEM, OPTICAL STORAGE MEDIUM AND USE OF SUCH A MEDIUM

A description is given of an optical storage system comprising an optical storage medium (1) and an optical head device (6). The medium has a substrate (2), a recording stack (3) and an optically transparent protective coating stack (4 and 5), for protecting the recording stack from impact by the optical head device (6). The protective coating stack comprises a multi-layer (4 and 5) of at least: a first layer (5) with a thickness smaller than 40 nm and a surface with a surface energy smaller than 1.5 J/m2, and a second layer (4), adjacent the first layer (5), with a Young's modulus E smaller than 10 GPa and larger than 0,001 GPa. This combination of layers (4 and 5) is very resistant to damage caused by mechanical impact of the optical head device (6). No lubricants are required.

OPTICAL DATA STORAGE SYSTEM WITH MULTIPLE WRITE-ONCE PHASE-CHANGE RECORDING LAYERS

FLUORINATED POLYACRYLATES AND POLYACRYLAMIDES HAVING A CONTROLLED CROSS-LINKING DEGREE, AND PROCESS FOR PREPARING SAME

This invention relates to the preparation of new fluorinated polymers starting from acrylic esters and/or acrylamides, in which the cross-linking degree of the final product is controlled by using, as a starting product, a mixture of mono-and di-acryl monomers, said monomers being characterized in that they include in their structure a perfluoropolyoxyalkylene chain.

METHOD FOR THE OPTICAL RECORDING OF INFORMATION AND AN OPTICAL RECORDING ELEMENT USED IN THE METHOD

Method for the optical recording of information and an optical recording element used in the method. A method is provided for the optical recording of information in which an amorphous recording layer 4 having a composition according to formula (1) provided on a synthetic resin substrate (2) (Figure 1) in a maximum layer thickness of 150 nm is exposed to infrared laser light having a wavelength of 750 - 900 nm and pulsed in accordance with the binary information to be recorded with a pulse time of at most 200 ns. A crystalline area 6 (bit) having maximum dimensions of a few micrometres is formed in the amorphous layer in the exposed places. As optical recording element is also provided for use in the method.

INFORMATION RECORDING MEDIUM

An information recording medium which includes light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

ENHANCED OPTICALLY SENSITIVE MEDIUM USING ORGANIC CHARGE TRANSFER MATERIALS TO PROVIDE REPRODUCIBLE THERMAL/OPTICAL ERASURE

An enhanced optically sensitive medium is disclosed which uses an organic charge transfer complex as the switching material. The organic charge transfer complex includes at least one moiety in an oxidized state. An enhancement mechanism is taught which provides a secondary source of neutral molecules of said at least one constituent moiety in the neutral or altered oxidation state. For example, with CuTCNQ used as the switching material, the erasing characteristics can be improved by using a covering dispersion having a matrix polymer interspersed with neutral molecules of TCNQ.degree..

METHOD OF OPTICALLY RECORDING AND ERASING INFORMATION

Method of optically recording and erasing information. According to the method a rotating recording element 23 (Fig. 3) having a crystalline recording layer 28 of the composition QxSbyTe , wherein Q = In, Ga; x = 34-44 at. %; y = 51-62 at. %; z = 2-9 at. %; is exposed to a pulsated laser light spot 29 (Fig. 4) in which amorphous information bits are formed which are read by means of weak laser light 30 and which can be erased in real time during one revolution of the element 23 by means of a laser light erasing spot 33 (Fig. 4) and be returned to the crystalline state.

ACTIVE ENERGY RAY-CURABLE COMPOSITION AND OPTICAL RECORDING MEDIUM HAVING CURED PRODUCT OF THE COMPOSITION

An active energy ray-curable composition comprising (A) an epoxy resin, (B) a compound selected from the group consisting of sulfonium salts and cyclopentadienyl iron compounds, (C) a compound selected from the group consisting of acrylates, methacrylates and oligomers thereof, and (D) an organic peroxide, and optionally (E) a rubber component. The composition is useful for an adhesive layer of an optical recording medium.

MAGNETO-OPTICAL RECORDING MEDIUM

A magneto-optical recording medium having an improved durability or reliability is obtained by providing a protecting layer of an alloy of titanium with one or more of chromium, rhenium and tantalum. This titanium alloy protecting layer has an improved resistance to oxygen, water, chlorine, and acids, etc. and provides an improved resistance to the environment and attacks from the synthetic resin substrate or other layers constituting the medium, such as a dielectric layer and a reflecting layer.

PSEUDO-REFLECTIVE READ INHIBITOR FOR OPTICAL STORAGE MEDIA

Systems and methods are described for inhibiting the readability of an optical storage media (200) due to changes in a pseudo-reflective material (220) that composes the optical media (200) after the optical media (200) has been exposed to air for a predetermined time. An optical media (200) includes a data encoded element (220). At least a fraction of the data transforms from a substantially optically reflective state to a substantially optically non- reflective state as at least in part a function of time from an initializing event. The systems and methods provide advantages because of low cost, limited content lifetime, avoidance of rental returns and minimum changes to existing manufacturing processes.

METHOD FOR BONDING MEMBERS, AND DISC MANUFACTURING METHOD AND DEVICE

A method for manufacturing discs by bonding two disc substrates using a cationic polymerization type ultraviolet curable composition as an adhesive to produce a disc. The method includes the steps of: applying the cationic polymerization type ultraviolet curable composition onto a part of an adhering surface of one of the two disc substrates; radiating ultraviolet light onto the cationic polymerization type ultraviolet curable composition; bonding the disc substrate to the other disc substrate via the cationic polymerization type ultraviolet curable composition which has been irradiated by the ultraviolet light; and spreading the cationic polymerization type ultraviolet curable composition which is present between the two disc substrates.

RECORDABLE OPTICAL RECORDING MEDIUM AND RECORDING METHOD THEREOF

Provided is a recordable optical recording medium that comprises a substr ate, a recording layer, and a reflective layer, wherein the recording layer and the reflective layer are formed on the substrate, the recording layer is formed of an inorganic material, and information is recorded on the recorda ble optical recording medium by use of an irreversible change at the recordi ng layer caused by irradiating blue laser light.

METAL CHELATE COMPOUND AND OPTICAL RECORDING MEDIUM USING IT

A metal chelate compound of a dis-azo compound represented by the following formula (I) with a metal: (I) (wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, and D is an aromatic residue which may have a substituent, or a heterocyclic amine residue which may have a substituent, and Y is a group having active hydrogen) and an optical recording medium having a recording layer provided on a substrate so that information can be written in and/or read out by a laser, wherein the recording layer contains a metal chelate compound of the dis-azo compound represented by the above formula (I), with a metal.

OPTICAL RECORDING MEDIA

In accordance with the present invention, there are provided optical recording media having a substrate and thereon a recording layer and designed to record information by varying optical constants of part of the recording layer by means of irradiation of energy beam. The recording layer contains Te, Ge and Cr. or Te, Ge and Zn, wherein the amount of Cr is 1-30 atom% based on the total amount of atoms constituting the recording layer, and the proportion of Te, Ge and Zn atoms contained in the recording layer are represented by the formula (TexGe100-x)100-yZny wherein x is 20?x? and y is 20 Подробнее

PROTECTIVE FILM FOR ARTICLES AND METHOD

A method of preparing a coated substrate is disclosed. The substrate is coat ed with a plasma generated polymer containing Si, O, C and H in specific atom ratio wherein the polymer also contains certain functional groups. A power density of 106 to 108 J/Kg is employed in die plasma polymerization process.

PROCEDURE FOR THE PRODUCTION OF AN OPTICALLY SELECTABLE ONE DATA DISK USING FLATTENING REINFORCEMENT A HEAT CONDUCTING PLATE FROM INORGANIC MATERIAL.

New optical recording materials, useful in recordable compact disks, consist of phthalocyanine optical dyes containing sulfonate-substituted residue(s)

New optical recording materials consist of metal-free or metallized, tetra-(hydrocarbyloxy)-phthalocyanine derivatives (I) containing 1-4 sulfonate-substituted residues. New optical recording materials consist of phthalocyanine derivatives of formula (I). R 1-R 41-12C alkyl (optionally substituted by 1-6 halo or OH, OR, NHR, N(R) 2or SR), 2-12C alkenyl or 2-12C alkynyl; R : 1-6C alkyl; M : H 2, divalent metal, monosubstituted trivalent metal, disubstituted tetravalent metal or oxo-metal group; S : residue containing at least one -SO 3group; n : 1-4. Independent claims are included for: (1) the preparation of (I); and (2) an optical recording support containing the optical recording material, specifically consisting of a substrate, a recording layer containing (I), a reflective layer and a protective layer. [Image].

New phthalocyanate compounds useful as an optical dye in the record layer of an optical record medium

Phthalocyanate compounds (I) are new. Phthalocyanate compounds of formula (I) are new. R 1-R 41-10C alkyl, halo, OH, 1-6C alkoxy, 1-6C alkylamino, 1-6C alkylthio, 2-12C alkenyl or 2-12C alkynyl; M : H, bivalent metal, a monosubstituted trivalent metal, disubstituted trivalent metal or an oxometal; G : bond between the phthalocyanine and anhydride group comprising -O-, -S-, -S-(CH 2) 1-6-, -(NH)-, -N(alkyl)-, -(CH 2)-, -CH(alkyl)-, -C(alkyl) 2-, -(CH 2-O)-, -C(=O)-, -C-O-C(=O)-, -O-C(=O)- or -C(=O)-O-; R 5, R 6H, Halo, 1-6C fluoroalkyl, 1-6C alkoxy, 1-6C alkylamino, 1-6C alkylthio, 2-6C alkenyl, 2-6C alkynyl or substituted aromatic; and n : 1. An independent claim is included for an optical recording medium comprising a substrate, a recording layer of an organic dye in which the information can be recorded by a laser beam, a reflective layer and a protective layer, which are formed in such a sequence, emphasizing is that the (I) are used in the recording layer of optical recording medium ...

OPTICAL RECORDING MEDIUM BASED ON FABRY-PEROT PRINCIPLE

Methods for application of tags onto optical media articles

Dual-layer phase-change information recording medium and recording and reading method using the same

Optical recording medium and composition of reactive crosslinkable resin for use in producing the same

A reduction in disk warpage is reconciled with a reduction in the creep of a light-transmitting layer. The light-transmitting layer has a modulus as determined at 25 DEG C in the range of 1107 Pa to 5108 Pa, a modulus as determined at -20 DEG C in the range of 4108 Pa to 5109 Pa, and a glass transition temperature of -20 DEG C to 0 DEG C. The light-transmitting layer has a Martens hardness of 10 N/mm<2> or lower. The light-transmitting layer has an indentation creep of 2% or less. The light-transmitting layer has an indentation recovery in the range of 0.2 to 2.0 [mu]m.

Optical recording medium

Electronic optic disc type ticket

MILIEU D'ENREGISTREMENT OPTIQUE D'INFORMATIONS, DESTINE A ETRE UTILISE AVEC UN FAISCEAU LASER D'ENREGISTREMENT

Ebauche d'enregistrement destinée à être utilisée avec un faisceau laser d'enregistrement donnant une lumière de fréquence donnée, qui comprend : une couche d'un matériau qui est réfléchissant, pour la lumière de ladite fréquence; une couche d'un matériau fortement absorbant, pour la lumière de cette fréquence, déposée sur la couche réfléchissant la lumière, cette ébauche d'enregistrement étant caractérisée en ce qu'elle comporte un revêtement supplémentaire épais, transparent, inerte et protecteur, disposé sur la couche absorbant la lumière, afin d'éloigner les particules susceptibles de contaminer la surface du foyer du faisceau lumineux d'enregistrement.

SUPPORT Of RECORDING PER LASER

SUPPORT Of RECORDING AND DEVICE Of ENREGISTREMENT/DE REPRODUCTION

THERMO-OPTICAL PROCESS Of INSCRIPTION Of INFORMATION AND INFORMATION SUPPORT INTENDS FOR the IMPLEMENTATION OF THIS PROCESS

SUPPORT Of RECORDING PER LASER

IMPROVEMENTS BRING TO THE VIDEO DISCS

IMPROVEMENTS WITH THE INFORMATION SUPPORTS HAS OPTICAL CHARACTER READING

Irreversible optical recording support comprises alloy of tellurium and zinc with an additional metal layer for heat dissipation

Le support d'enregistrement optique irréversible comporte une couche active (2) en matériau inorganique, présentant une face avant (3) destinée à recevoir un rayonnement optique (4) pendant des opérations d'écriture et de lecture et une face arrière (5), et une couche métallique additionnelle (6) disposée sur la face arrière (5) de la couche active (2). La couche métallique additionnelle (6) a de préférence une épaisseur comprise entre 9 nanomètres et 12 nanomètres. Le matériau inorganique de la couche active (2) peut être un alliage de tellure et de zinc comportant entre 60% et 70% de zinc et entre 30% et 40% de tellure en pourcentage atomique, et de préférence 65% de zinc et 35% de tellure. Le support peut comporter une couche semi-réfléchissante (7) disposée sur la face avant (3) de la couche active (2) et/ou une couche protectrice (8) en matière polymère sur la face arrière (5).

HARD COAT FILM

Optical disc

RADIATION CURABLE ACRYLATE COMPOSITION

Substratos termoplásticos de hidrocarnonetos saturados amorfos de aderência melhorada

Composições contendo pelo menos um corante oxonol e pelo menos um complexo metálico

Radiation curable resin composition and cured product thereof

The present invention relates to a radiation curable resin composition characterized by comprising an inorganic component having silica particles constituted of a hydrolyzate of alkoxysilane oligomer and a monomer and/or its oligomer, and having a viscosity of 1,000~10,000 centipoise at 25 DEG C.

Data recording medium and data regeneration apparatus thereof

A kind of data recording medium and data regeneration apparatus thereof which is composed of the first metal layer and the second metal layer with different composition at the opposite side to the incidence side of power. In which the composition of the first metal layer near the recording layer are Al, Ag, Au, Pt, Pd etc. The sum of those content of atoms are above 60%. So that it can execute a recording regeneration with high dependency.

Optical recording reproduction method and optical recording medium

The object of the present invention is to provide an optical recording reproduction method and optical recording medium capable of performing an excellent optical recording by a simple film structure in consideration of a recording layer formed by environment type material. To achieve the object, the optical recording medium 10 comprises, on a substrate 12, a pair of dielectric layers 14A and 14B with state changed by a laser beam whose strength of energy is modulated corresponding to the recorded information, and a recording layer 18 formed by an auxiliary material layer 16 clamped by the dielectric layers. The auxiliary material layer 16 has a main component consisting one of Sn, Ti, Si, Bi, Ge, and C. The dielectric material of the base material used as the dielectric layers 14A and 14B is composed at least one of the ZnS, SiO2, AlN, and Ta2O5.

Sputtering target, optical information recording medium and manufacturing method thereof

The present invention relates to a sputtering target and manufacturing method thereof to form a thin film for a protective layer of an optical information recording medium, wherein said protective layer has good adhesiveness to adjacent reflective layer and recording layer, makes said reflective layer and recording layer hard to be deteriorated, and allows upon sputtering to be formed in high speed, aims to improve largely characteristics and productivity of the optical information recording medium, and provides, by using materials containing SiO2 based oxides, a sputtering target and manufacturing method thereof, said sputtering target being comprised as main constituents of tin oxide, zinc oxide and oxide(s) of element(s) having valency of three or more and characterized in that 12/11=0.1 to 1, where I1 represents the maximum peak strength of the (110) peak of tin oxide in X-ray diffraction pattern and I2 represents the maximum peak strength among peaks of oxide(s) or complex oxide(s) ...

OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING SAME

An optical information recording medium exhibiting a favorable recording characteristic even if recording is carried out while a fingerprint is on the surface of the light-transmitting layer. The optical information recording medium (1) includes a recording layer (6) and a light-transmitting layer (7) transmitting a recording laser beam and a reproducing laser beam directed to the recording layer (6). A hard-coat layer (8) is formed on the surface of the light-transmitting layer (7) and is formed of a resin the angle of contact of which with triolein on the hard coat is 50° or more, preferably 60° or more.

OPTICAL INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD

A highly reliable recording medium having high density and excellent recording/reproducing characteristics within a wide linear velocity range, and a method for manufacturing such recording medium are provided. An optical information recording medium is provided with at least a recording layer, which changes between different statuses which can be optically detected by beam irradiation, a light absorbing layer composed of a material containing an Si of 50at% or more by not more than 95at%, and a reflecting layer composed of a material including an Ag of 95at% or more and an In of 5at% or less, in this order on a transparent board.

OPTICAL DISK, AND SPUTTERING TARGET FOR Cu ALLOY RECORDING LAYER

This invention provides an optical disk comprising a Cu alloy recording layer and having a structure comprising a recording layer held between protective layers of ZnS-SiO2, characterized in that the recording layer comprises 1 to 20 at% in total of one or more components selected from Zn, Mn, Ga, Ti, and Ta with the balance consisting of Cu and unavoidable impurities, and a sputtering target for a Cu alloy recording layer. The optical disk and sputtering target for a Cu alloy recording layer, particularly when ZnS-SiO2 is used as a protective layer, can prevent or suppress the sulfidization of the Cu recording layer caused by the diffusion of S from the protective layer to provide an optical recording medium free from recording bit errors.

OPTICAL RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME

Provided is an optical recording medium having an inorganic recording film. A transparent conductive film is provided on the inorganic recording film. The inorganic recording film is provided with a first recording film containing titanium (Ti), and a second recording film containing an oxide of germanium (Ge). The transparent conductive film is arranged on the side of the second recording film. The transparent conductive film contains an oxide of tin (Sn).

SHEET FOR MULTILAYER OPTICAL RECORDING MEDIUM AND MULTILAYER OPTICAL RECORDING MEDIUM USING THE SAME

Disclosed is a sheet for producing a multilayer optical recording medium having a repeating structure wherein a plurality of optical recording layers are laminated. The sheet for a multilayer optical recording medium has a structure having a unit wherein an optical recording layer and an adhesive layer are laminated, or a structure having a unit wherein an optical recording layer, a barrier layer and an adhesive layer are laminated in this order. The maximum height roughness (Rz) of the optical recording layer or the barrier layer is not more than 500 nm. A multilayer optical recording medium is produced by using the sheet for a multilayer optical recording medium. Also disclosed is a sheet for producing, with high precision, a high-quality multilayer optical recording medium having a repeating unit wherein a plurality of optical recording layers containing a multiphoton absorbing material are laminated. A multilayer optical recording medium is also produced by using this sheet.

OBJECT WITH COMPOSITE HARD COATING LAYER AND METHOD OF FORMING COMPOSITE HARD COATING LAYER

An inexpensive object having a hard coating excellent in antifouling properties, lubricity, marring resistance, and wearing resistance; and a method of forming a hard coating. A hard coating material composition containing an actinic-energy-ray-curable compound is applied to a surface of an object (1) to be coated with a hard coating layer to thereby form a layer of the hard coating material composition. A film of a surface material comprising a fluorinated polyfunctional (meth)acrylate compound and a fluorinated monofunctional (meth)acrylate compound is formed on the layer of the hard coating material composition to form a layer of the surface material. The layer of the hard coating material composition and the surface material layer thus formed are irradiated with actinic energy rays to simultaneously cure both layers. Thus, a hard coating layer (2) in contact with the surface of the object (1) and an antifouling surface layer (3) in contact with the surface of the hard coating layer ...

LAMINATE FOR PROTECTING OPTICAL RECORDING LAYER

A laminate for protecting an optical recording layer of an information recording member, particularly an information recording layer of an optical card, is disclosed. An organic solvent-resistant synthetic resin layer (12) is provided on the surface of a transparent and optically isotropic synthetic resin sheet (11), said surface being covered with an information recording layer. The synthetic resin layer (12) is composed of a crosslinkable phenoxy ether resin, a polyparabanic acid resin or a polyacrylonitrile resin and is formed by casting. Since the laminate for protecting an optical recording layer has the above-described laminate structure, it has good transparency, good optical isotropy, good mechanical strengths, good hardness, good solvent resistance, low heat conductivity, good heat resistance, good moisture absorption resistance, gas barrier property, etc. and can be put into practice also in respect of production cost.

COATED MEDIA FOR OPTICAL RECORDING AND METHOD OF FABRICATING

An optical data storage system employing a data-modulated writing laser beam and a nonerasing reading laser beam of predetermined wavelength and optical media for such systems characterized by multiple layers whose optical characteristics and thickness are chosen to accomodate a prescribed writing and reading energy and wavelength and so provide an "anti-reflection" condition for unrecorded portions of the medium and a relatively higher reflectivity for recorded portions. A preferred optical medium includes a highly reflective aluminum layer, a relatively transparent polymer spacer layer overlying the reflective layer, and an optical absorber (recording) layer overlying the spacer layer. Overcoating structure is specified in some detail; e.g., as a "soft pad" layer (e.g., fluoropolymer) on the absorber, with a "Hard" layer (e.g., radiation-cured acrylic) laid over the "soft pad" as an outer protective overcoat. Also, the "spacer" may be rendered as such a " soft pad".

OPTICAL RECORDING MEDIUM COMPRISING A GESBTE RECORDING LAYER

L'invention porte sur un support optique d'informations dont la couche d'enregistrement est à base d'un alliage de Ge-Sb-Te, sa composition étant située à l'intérieur de l'aire du pentagone ABCDE dans un diagramme triangulaire ternaire. Cet alliage présente un temps d'effaçage total (CET) de 50 ns ou moins. Des valeurs CET inférieures à 45 ns sont obtenue avec des alliages situés sur la ligne de liaison reliant Te aux composés Ge¿2-Sb¿2-Te¿5 dans l'aire ABCDE. Un tel support se prête aux supports d'enregistrement à grande vitesse (au moins 6 fois celle d'un CD) tels que les DVD+RW, CD-RW, DVD-RAM et les rubans optiques.

OPTICAL DATA SUPPORT COMPRISING A HEMICYANIN DYE IN THE INFORMATION LAYER AS LIGHT-ABSORBING COMPOUND

The invention relates to an optical data support, comprising a preferably transparent substrate, optionally already coated with one or several reflective layers, with an information layer, which may be written to by means of light, optionally one or several reflective layers, and optionally a protective layer, or a further substrate or a covering layer applied to the surface thereof. Said support may be written to and read from by means of blue or red light, preferably laser light, whereby the information layer contains a light-absorbing material and, optionally, a binding agent, characterised in that at least one hemicyanin dye is used as light-absorbing compound.

REDUCED SOLVENT ANTISTATIC HARD COAT

A cured antistatic coating comprising a fluorinated ionic salt of general formula (1), wherein M+ represents a cation, Q represents a carbon atom, a nitrogen atom, or an oxygen atom, each X independently represents a divalent linking group, Rf represents a fluorinated group; and R' represents a monovalent organic group. When Q is carbon c is 3 and m is 1, 2, or 3; when Q is nitrogen c is 2 and m is 1 or 2, and when Q is oxygen, c is 1 and m is 1. In another embodiment, the above fluorinated ionic salt may be incorporated into an antistatic coating obtained from ingredients comprising a radiation-curable material; a nonionic perfluoro surfactant; and a radiation-curable silicone-containing compound.

SPATTERING TARGET FOR USE IN FORMING PREVENTIVE FILM FOR OPTICAL RECORDING MEDIUM, METHOD FOR PREPARING THE TARGET, AND OPTICAL RECORDING MEDIUM HAVING PREVENTIVE FILM FORMED BY USE OF THE TARGET

A spattering target for use in forming a preventive film for an optical recording medium comprising a composite of zinc sulfide and silicon oxide, characterized in that the total content of one or more of halides and halogens in the target is 30 ppm or less in terms of halogens. The spattering target can be so prepared as to be essentially composed of fine crystal grains and have a high density of 97 % or higher, and thus can be used as a preventive film for a phase-change optical recording medium, and can be prepared with stability at a low cost. Further, the spattering target is free from or is suppressed in discoloration such as unevenness of color, which results in the increase of the production yield, and the use of the above target can improve the quality of an optical recording medium.

Optical recording and reproducing method utilizing recording medium including recording regions formed by localized co-melted mixture of non-reactant materials

A record blank for use in optical recording is formed by disposing in laminate form on a substrate a recording layer and a supplementary record layer, optionally with a separating layer interposed between the recording layer and the supplementary record layer. On irradiation with a recording light beam having a prescribed wavelength, in accordance with recording information, the recording layer and supplementary record layer locally form a co-melted mixture state (optically through breakage of the separating layer, if present) thus resulting in an optically detectable change in the record blank detectable by a reproducing light beam which has a wavelength the same as or different from the wavelength of the recording light beam.

Heat mode recording element based on a thin metallic recording layer

A heat mode element with improved mechanical properties is disclosed comprising a transparent support, a thin metallic recording layer, an adhesive layer, a polymeric resin layer and a top layer comprising a roughening agent in such an amount that the Ra value of said top layer is at least 0.08 μm and the Rz value is at least 0.6 μm. In a preferred embodiment the metallic recording layer is a bismuth layer, and the support has on the other side a backing layer with a low Ra and Rz value. In an alternative embodiment the top layer is absent and the roughening agent is incorporated in the polymeric resin layer itself. Also disclosed is a method for obtaining a heat mode image by the information-wise laser exposure of the disclosed element.

Organic dye for recording layer and high density optical recording medium using the same

A preparation method of a dye incorporated in a recording layer for a high density optical recording medium, having the following general chemical structural formula (I): is provided.

Thin Film Comprising Titanium Oxide as Main Component and Sintered Compact Sputtering Target Comprising Titanium Oxide as Main Component

A thin film comprising titanium oxide as its main component includes titanium, oxygen and copper, content of Ti is 29.0 to 34.0 at % and content of Cu is 0.003 to 7.7 at % or less with remainder being oxygen and unavoidable impurities. A ratio of oxygen component to metal components, O/(2 Ti+0.5 Cu), is 0.96 or higher. The thin film has a high refractive index and low extinction coefficient. A sintered compact sputtering target suitable for producing the foregoing thin film is also provided and can be used to obtain a thin film with superior transmittance and low reflectance and which is effective as an interference film or protective film of an optical information recording medium, and to obtain a thin film that can be applied to a glass substrate; that is, a thin film that can be used as a heat ray reflective film, antireflection film, and interference filter.

OPTICAL RECORDING MEDIUM PRODUCTION DEVICE AND PRODUCTION METHOD

The recording medium production device, comprising: a substrate positioning pin vertically movable that performs positioning to a center-hole of substrate; a substrate holding portion that performs positioning of substrate using the substrate positioning pin to hold substrate; a cleaner having a gas ejection portion that ejects gas toward surface of substrate held by the substrate holding portion, and a gas suction portion that suctions gas; and a substrate positioning pin fixing portion that can press the substrate positioning pin downward, configured so as not to contact with an inner circumferential side surface of the center-hole of substrate; 1. An optical recording medium production device in which an information signal layer is provided on a substrate , comprising:a substrate positioning pin vertically movable that performs positioning to a center hole of the substrate;a substrate holding portion that performs the positioning of the substrate using the substrate positioning pin to hold the substrate;a cleaner having a gas ejection portion that ejects gas toward a surface of the substrate held by the substrate holding portion, and a gas suction portion that suctions the gas; anda substrate positioning pin fixing portion that can press the substrate positioning pin downward, and is configured so as not to come into contact with an inner circumferential side surface of the center hole of the substrate;wherein the substrate positioning pin fixing portion descends inside the center hole of the substrate held by the substrate holding portion so as to form a gap in the vicinity of the inner circumferential side surface of the center hole of the substrate, and presses and fixes the substrate positioning pin, and in the state, the cleaner performs the ejection and suction of the gas.2. The production device according to claim 1 , wherein the substrate positioning pin fixing portion has a columnar shape claim 1 , and a diameter of a circular cross section thereof is ...

OPTICAL MEDIA HAVING GRAPHENE WEAR PROTECTION LAYERS

An optical storage medium is disclosed that includes an optical disc having layers of graphene on one or both sides of the disc to provide wear protection against scratches and mechanical abrasion. Grahpene is a hard material that is 97.7% optically transparent. Thus, layers of graphene at or near the exterior sides of an optical disc provide wear protection to the optical media from mechanical abrasion and scratches while allowing laser light to pass through the graphene layers to read or write to the optical media. 1. An optical disc , comprising:a disc having an optical recording layer; anda wear protection layer comprising an annular sheet of graphene.2. The optical disc of claim 1 , wherein said annular graphene sheet is formed of a single contiguous sheet of graphene.3. The optical disc of claim 2 , wherein said annular graphene sheet has a uniform thickness claim 2 , thereby providing uniform transmission of light through said wear protection layer to facilitate uniform reading and writing of information to and from said optical recording layer.4. The optical disc of claim 1 , wherein said annular graphene sheet is formed of a single contiguous monolayer of carbon atoms.5. The optical disc of claim 1 , wherein a center of said annular graphene sheet is located at a center of said optical disc claim 1 , said annular graphene sheet has an inner radius that has a length that is less than or equal to an inner radius of said optical recording layer claim 1 , and said annular graphene sheet has an outer radius that has a length that is greater than or equal to an outer radius of said optical recording layer.6. The optical disc of claim 1 , wherein said wear protection layer further comprising a plurality of annular graphene sheets.7. The optical disc of claim 6 , wherein said plurality of annular graphene sheets are stacked vertically such that each of said plurality of annular graphene sheets share a common center point.8. The optical disc of claim 6 , wherein ...

OPTICAL RECORDING MEDIUM, AND MANUFACTURING METHOD OF OPTICAL RECORDING MEDIUM

There is provided an optical recording medium including a substrate, an information recording layer that is formed on the substrate, and has a recording film including a W oxide and an Fe oxide, and a light transmissive layer that is formed on the information recording layer. 1. An optical recording medium comprising:a substrate;an information recording layer that is formed on the substrate, and has a recording film including a W oxide and an Fe oxide; anda light transmissive layer that is formed on the information recording layer.2. The optical recording medium according to claim 1 , wherein the recording film includes at least one or more oxides of Al claim 1 , Si claim 1 , Ti claim 1 , Zn claim 1 , In claim 1 , Sn claim 1 , Zr claim 1 , Ga claim 1 , Mn claim 1 , Ni claim 1 , Cu claim 1 , Pd claim 1 , and Ag in addition to the W oxide and the Fe oxide.3. The optical recording medium according to claim 1 , wherein the information recording layer has a single film structure of the recording film.4. The optical recording medium according to claim 1 , wherein the information recording layer has a dual film structure including the recording film and a protective film.5. The optical recording medium according to claim 1 , wherein the information recording layer has a triple film structure including a protective film claim 1 , the recording film claim 1 , and another protective film.6. The optical recording medium according to claim 1 , wherein the information recording layer is formed in a land/groove shape.7. A manufacturing method of an optical recording medium that includes a substrate claim 1 , an information recording layer claim 1 , and a light transmissive layer claim 1 , the method comprising:molding the substrate;forming the information recording layer on the substrate; andforming the light transmissive layer on the information recording layer,wherein, in the step of forming the information recording layer, formation of a recording film that includes a W oxide ...

OXIDE SPUTTERING TARGET AND PROTECTIVE FILM FOR OPTICAL RECORDING MEDIUM

The present invention relates to an oxide sputtering target. By using the oxide sputtering target for formation of a protective film for an optical recording medium, a film, which has high storage stability and breakage resistance due to flexibility, can be deposited. Also, it can be utilized for direct-current sputtering and forms a less amount of particles during sputtering. The oxide sputtering target is made of an oxide sintered body including: with respect to a total content amount of metal compositions, 0.15 at % or more of one or more of Al, Ga, and In as a total content amount; 7 at % or more of Sn; and the balance Zn and inevitable impurities, wherein a total content amount of Al, Ga, In, and Sn is 36 at % or less. 1. A oxide sputtering target made of an oxide sintered body comprising: with respect to a total content amount of metal compositions , 0.15 at % or more of one or more of Al , Ga , and In as a total content amount; 7 at % or more of Sn; and the balance Zn and inevitable impurities , whereina total content amount of Al, Ga, In, and Sn is 36 at % or less.2. A oxide sputtering target made of an oxide sintered body comprising: with respect to a total content amount of metal compositions , 0.15 at % or more of one or more of Al , Ga , and In as a total content amount; 7 at % or more of Sn; 1.0 to 20.0 at % of one or more of Ge and Cr as a total content amount; and the balance Zn and inevitable impurities , whereina total content amount of Al, Ga, In, and Sn is 36 at % or less.3. A protective film for an optical recording medium claim 1 , which is deposited by sputtering using the oxide sputtering target according to claim 1 , wherein the protective film is an oxide with a component composition comprising: with respect to a total content amount of metal compositions claim 1 , 0.15 at % or more of one or more of Al claim 1 , Ga claim 1 , and In as a total content amount; 7 at % or more of Sn; and the balance Zn and inevitable impurities claim 1 , ...

Media having graphene wear protection layers

An optical or magnetic storage medium is disclosed that includes a disc having layers of graphene on one or both sides of the disc to provide wear protection against scratches and mechanical abrasion.

LIGHT TRANSMITTIVE AlN PROTECTIVE LAYERS AND ASSOCIATED DEVICES AND METHODS

Devices having light transmittant protective layers and methods associated with such layers are provided. In one aspect, for example, a device having a light transmittant protective layer can include a substrate having a transmittance of greater than or equal to about 85 for light having at least one wavelength from about 250 nm to about 800 nm, and a light transmittant protective layer coated on the substrate. The protective layer includes at least 50 wt % AlN and having a transmittance of greater than or equal to 80% for light having at least one wavelength from about 250 nm to about 800 nm.

Thin Film Comprising Titanium Oxide, and Method of Producing Thin Film Comprising Titanium Oxide

A thin film is provided that primarily comprises titanium oxide and includes Ti, Ag and O. The thin film contains 29.6 at % or more and 34.0 at % or less of Ti, 0.003 at % or more and 7.4 at % or less of Ag, and oxygen as the remainder thereof and has a ratio of oxygen to metals, O/(2Ti+0.5Ag), of 0.97 or more. The thin film has a high refractive index and a low extinction coefficient. In addition, the thin film has superior transmittance, minimally deteriorates in reflectance, and is useful as an interference film or a protective film for an optical information recording medium. The film may also be applied to a glass substrate to provide a heat reflective film, an antireflective film, or an interference filter. A method of producing the thin film is also disclosed. 1. A sputtering target for producing a thin film mainly comprising titanium oxide , comprising:{'sub': 2-m', '1-n', 'n, 'a sintered structure containing Ti, Ag and O as its constituent elements and having a composition of (TiO)Ag, where m and n satisfy the equations 0≤m≤0.5 and 0.0001≤n≤0.1;'}said sintered structure having a specific resistance of 10 Ωcm or less; andsaid sintered structure having a matrix phase of titanium oxide and an Ag phase dispersed as particles within said matrix phase.2. The sputtering target according to claim 2 , wherein an average grain size of said Ag phase particles existing in said sintered structure is 15 μm or less.3. A sputtering target for producing a thin film mainly comprising titanium oxide claim 2 , comprising:{'sub': 2-m', '1-n', 'n, 'a sintered structure containing Ti, Ag and O as its constituent elements and having a composition of (TiO)Ag, where m and n satisfy the equations 0≤m≤0.5 and 0.01≤n≤0.1;'}said sintered structure having a specific resistance of 10 Ωcm or less; andsaid sintered structure having a matrix phase of titanium oxide and an Ag phase dispersed as particles within said matrix phase.4. The sputtering target according to claim 3 , wherein an ...

Thin Film Comprising Titanium Oxide, and Method of Producing Thin Film Comprising Titanium Oxide

A thin film is provided that primarily comprises titanium oxide and includes Ti, Ag and O. The thin film contains 29.6 at % or more and 34.0 at % or less of Ti, 0.003 at % or more and 7.4 at % or less of Ag, and oxygen as the remainder thereof and has a ratio of oxygen to metals, O/(2Ti+0.5Ag), of 0.97 or more. The thin film has a high refractive index and a low extinction coefficient. In addition, the thin film has superior transmittance, minimally deteriorates in reflectance, and is useful as an interference film or a protective film for an optical information recording medium. The film may also be applied to a glass substrate to provide a heat reflective film, an antireflective film, or an interference filter. A method of producing the thin film is also disclosed. 1. A method of producing a thin film mainly comprising titanium oxide , comprising the step of sputtering a sintered sputtering target that comprises components of Ti , Ag and O , contains the respective components at a composition ratio of (TiO)Ag , where 0≦m≦0.5 and 0.0001≦n≦0.2 , and has a specific resistance of 10 Ωcm or less , wherein said sputtering step is performed under an argon gas atmosphere without oxygen or with 0.1 to 16% of oxygen to form a thin film on a substrate such that the thin film contains 29.6 atomic percent (at %) or more and 34.0 at % or less of Ti , 0.003 at % or more and 7.4 at % or less of Ag , and oxygen as the remainder thereof , and has a ratio of oxygen to metals , O/(2Ti+0.5Ag) , of 0.97 or more.2. A method of producing a thin film mainly comprising titanium oxide according to claim 1 , wherein said sputtering is DC sputtering claim 1 , and wherein claim 1 , when an oxygen gas ratio used in the sputtering gas atmosphere is represented as b (%) claim 1 , the oxygen gas ratio is adjusted during said sputtering step to be in a range of 0 Подробнее

SYSTEM CONSISTING OF TWO UV-CURING DRY-TRANSFER COATING LAYERS FOR THE PROTECTION OF A HOLOGRAM IN A PHOTOPOLYMER FILM COMPOSITE

The invention relates to a scaled holographic medium comprising a layer construction B′-C1′-C2′, to a process for producing the sealed holographic medium, to a kit of parts, to a layer construction comprising a protective layer and a substrate layer and to the use thereof. 115.-. (canceled)16. A sealed holographic medium comprising a layer construction B′-C1′-C2′ , wherein B′ is a photopolymer layer containing a volume hologram , C1′ is a protective layer at least partly cured by actinic radiation obtained by reaction ofI) at least one thermoplastic mainly linear and semicrystalline polyurethane resin C1-I,II) at least one multifunctional acrylate reactive diluent C1-II,III) at least one photoinitiator C1-III andIV) optionally assistant and added substances andC2′ is a protective layer at least partly cured by actinic radiation obtainable by reaction ofI) at least one thermoplastic resin C2-I selected from the group consisting of polyvinyl butyral and polymethyl methacrylate,II) at least one multifunctional acrylate reactive diluent C2-II,III) at least one photoinitiator C2-III andIV) optionally assistant and added substances.17. The sealed holographic medium according to claim 16 , wherein the layer construction according to the invention consists of at least four layers at least partly joined to one another claim 16 , wherein the layers are arranged directly atop one another in the sequence substrate layer A claim 16 , photopolymer layer B′ claim 16 , cured protective layer C1′ and cured protective layer C2′.18. The sealed holographic medium according to claim 16 , wherein the layer construction consists of at least four layers at least partly joined to one another claim 16 , wherein the layers are arranged directly atop one another in the sequence photopolymer layer B′ claim 16 , cured protective layer C1′ claim 16 , cured protective layer C2′ and substrate layer D2.19. The sealed holographic medium according to claim 16 , wherein the layer construction consists ...

RECORDING LAYER, OPTICAL DATA RECORDING MEDIUM, AND SPUTTERING TARGET

A recording layer for an optical data recording medium is described. Recording is performed by irradiating the recording layer with a laser beam. The recording layer contains a W oxide, an Fe oxide, and at least one of a Ta oxide and a Nb oxide. The recording layer contains 10-60 atomic % of Fe and a total of 3-50 atomic % of Ta and Nb relative to the total metal atoms therein. 1. A recording layer for an optical data recording medium in which recording is performed by laser beam irradiation , the recording layer comprising:W oxide;Fe oxide; andat least one selected from the group consisting of Ta oxide and Nb oxide,wherein the recording layer comprises 10 to 60 atomic % Fe and 3 to 50 atomic % of the total of Ta and Nb, each atomic percentage relative to a total of all metal atoms in the recording layer.2. The recording layer of claim 1 , further comprising at least one selected from the group consisting of Mn oxide claim 1 , Cu oxide claim 1 , Zn oxide claim 1 , Ag oxide claim 1 , and Al oxide.3. The recording layer of claim 1 , wherein the recording layer has an average thickness of 15 nm to 60 nm.4. The recording layer of claim 2 , wherein the recording layer has an average thickness of 15 nm to 60 nm.5. An optical data recording medium claim 1 , comprising the recording layer of .6. The optical data recording medium of claim 5 , further comprising a protective layer stacked on at least one surface of the recording layer claim 5 ,wherein the protective layer comprises a metal oxide as a main composition andwherein the protective layer has an average thickness of 5 nm to 50 nm.7. A sputtering target to form a recording layer for an optical data recording medium by sputtering claim 5 , in which recording of the recording layer is performed by laser beam irradiation claim 5 , the sputtering target comprising:W;Fe; andat least one selected from the group consisting of Ta and Nb,wherein the sputtering target comprises 10 to 60 atomic % Fe, and 3 to 50 atomic % of the ...

OPTICAL RECORDING MEDIUM PRODUCTION DEVICE AND PRODUCTION METHOD

A recording medium production device includes a substrate positioning pin vertically movable that performs positioning to a center-hole of a substrate; a substrate holding portion that performs positioning of substrate using the substrate positioning pin to hold the substrate; a cleaner having a gas ejection portion that ejects gas toward the surface of the substrate held by the substrate holding portion, and a gas suction portion that suctions gas; and a substrate positioning pin fixing portion that can press the substrate positioning pin downward. The fixing portion is configured so as not to contact an inner circumferential side surface of the center-hole of substrate. The substrate positioning pin fixing portion descends inside the center-hole of substrate held by the substrate, and presses and fixes the substrate positioning pin. Then the cleaner performs ejection and suction of gas. 1. An optical recording medium production method comprising the steps of:holding a substrate positioned by a substrate positioning pin vertically movable to a center hole of the substrate;pressing the substrate positioning pin downward and fixing the same so as to expose an inner circumferential side surface of the center hole of the substrate; andremoving a foreign material by a cleaner that ejects gas toward a surface of the held substrate and simultaneously suctions the gas.2. The production method according to claim 1 ,wherein in the state where the substrate positioning pin is pressed downward and fixed so as to expose the inner circumferential side surface of the center hole of the substrate,a part of the cleaner can move up to an inner position from the inner circumferential side surface of the held substrate.3. The production method according to claim 1 , wherein the respective steps are performed immediately before a process of forming a recording film or a reflection film by sputtering a target material to a signal surface of the substrate.4. The production method ...

METHOD FOR NANOMODULATING METAL FILMS BY MEANS OF HIGH-VACUUM CATHODE SPUTTERING OF METALS AND STENCILS

The present invention relates to a method for nanomodulating metal films by means of high-vacuum cathode sputtering of metals, and to stencils of anodized Al. As an example of the use of these nanomodulated metal films, the synthesis or production of a magnetically weak film by means of cathode sputtering, which film can he used as a magnetic field sensor, and a metal nanomodulated stencil are analyzed. 1. Method for nanomodulation of metal surfaces , comprising the following steps:a) to obtain a template recorded with aluminum nanovalleys, anodizing a high-purity aluminum film consisting of a natural oxide layer very thin of aluminum on its surface, growing said layer by using an electrochemical solution to partially dissolve the oxide aluminum and form a porous layer is supported on the aluminum, which is removed by selective chemical attack with an acidic solution, to thereby obtaining aluminum with semicircular holes arranged hexagonally, and then obtaining an aluminum substrate metal which is recorded with semicircular nanovalleys hexagonally ordered;{'sub': 2', '4', '2', '2', '4', '3', '4', '3', '4', '2, 'b': '9', 'wherein said electrolytic solution is selected from sulfuric acid (HSO), oxalic acid (HCO) or phosphoric acid (HPO), and said acid solution is a mixture of chromic acid (CrOs), phosphoric acid (HPO and H0;'}b) nanomodulating a metal film using aluminum substrate recorded with nanovalleys obtained in step a), by evaporating onto said substrate a metal selected from the group consisting of Au, Cu or Ag to generate a metal film then take off, and where evaporation of metal is deposited, it is performed by sputtering in a high vacuum, and the metal evaporated adopts the structure of aluminum nanovalleys, and where to ensure low adhesion of metal deposited on the nanostructured aluminum is used a deposition rate very high, between 59 and 127 nm/min and also a distance of approximately 5 cm between the barrel and the substrate is used;c) removing the foil ...

DIELECTRIC LAYER, OPTICAL RECORDING MEDIUM, SPUTTERING TARGET AND OXIDE

A dielectric layer is formed from an oxide containing Sn and at least one of Zn, Zr, Si and Ga. The molar percentages of Sn, Zn, Zr, Si, and Ga, relative to the total elements in the oxide, represented by a, b, c, d, and e, respectively, satisfy the conditions (1)-(7): (1) 0≤b/(a+b)≤0.6, (2) 0≤(c+d)/(a+b+c+d+e)≤0.5, (3) 0≤b≤50, (4) 0≤c≤40, (5) 0≤d≤45, (6) 0≤e≤40, and (7) 20≤b+c+d+e≤80. The dielectric layer enables favorable information recording in an oxide-based recording layer on which the dielectric layer is directly overlaid, does not require preventive measures for health hazard, and is superior in durability. 1. A dielectric layer that is to be overlaid directly on a recording layer for recording carried out by irradiation with light , whereinthe dielectric layer is formed from an oxide comprising: a Sn element; and at least one of a Zn element, a Zr element, a Si element and a Ga element, and [{'br': None, 'i': b', 'a+b, '0≤/()≤0.6\u2003\u2003(1),'}, {'br': None, 'i': c+d', 'a+b+c+d+e, '0≤()/()≤0.5\u2003\u2003(2),'}, {'br': None, 'i': 'b≤', '0≤50\u2003\u2003(3),'}, {'br': None, 'i': 'c≤', '0≤40\u2003\u2003(4),'}, {'br': None, 'i': 'd≤', '0≤45\u2003\u2003(5),'}, {'br': None, 'i': 'e≤', '0≤40\u2003\u2003(6), and'}, {'br': None, 'i': 'b+c+d+e≤', '20≤80\u2003\u2003(7).'}], 'the dielectric layer satisfies inequalities (1) to (7), given a content of the Sn element being a mol %, a content of the Zn element being b mol %, a content of the Zr element being c mol %, a content of the Si element being d mol %, and a content of the Ga element being e mol %, with respect to a total of elements other than oxygen in the oxide2. The dielectric layer according to claim 1 , wherein a volume resistivity is less than or equal to 10 MΩ·cm.3. An optical recording medium claim 1 , comprisinga recording layer for recording carried out by irradiation with light, and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the dielectric layer according to that is overlaid directly on the ...

Optical recording medium

A disc-shaped recording medium (40) having transcription characteristics for fine signals simultaneously with resonance characteristics and stiffness which are characteristics contrary to the transcription characteristics. At least a recording layer (42) and a light transmitting layer (41) are sequentially formed on a substrate (44,45) and light (L) is illuminated from a light transmitting layer (41) side to record and/or reproduce information signals. The substrate includes a core layer (45) formed of a resin composition comprised of a mixture of two or more resin sorts. The resin composition has tanδ, as an index indicating the internal loss, equal to not less than 0.015 as a system in its entirety. The resin composition constituting the core layer (45) is a compounded resin of the incompatible system and is of an islands-sea structure.

Use of a storage meedium in a method of recording information

An optical disk comprises a polycarbonate substrate (11), a first protective layer (12) formed on the sub­strate (11) and made of SiO₂, a recording layer (13) formed on the first protective layer (12) and made of an In-Sb-Te alloy, a second protective layer (14), formed on the recording layer (13) and made of SiO₂, and a surface protective layer (15) formed on the second protective layer (14) and made of an ultraviolet curable resin. The recording layer (13) has a composition of (In 100-x Sb x ) 100-y Te y , wherein x and y are in atomic % and x falls within a range of 48 ≦ x ≦ 52 and y falls within a range of 0.05 ≦ y ≦ 5.

저장 매체, 기판 제조 방법, 데이터 검색 방법, 엠보싱 방법 및 데이터 저장 매체 형성 방법

바람직한 실시예에서, 데이터 저장 매체는 기판의 한쪽면이나 양쪽면에 배치되는 원하는 표면 형태들과, 또한 기판의 한쪽면이나 양쪽면에 배치되는 자기-광학 물질과 같은 데이터 저장층과 임의의 보호, 절연 및/혹은 반사층들로 그 자리(in situ) 형성될 수 있는, 동질이거나 이질의 플라스틱 기판을 포함한다. 기판은, 표면의 무결성과 매끄러움에 역효과 없이 강성을 증가하기 위해 사용되는 다양한 형태와 기하학의 보강제로, 동질의, 테이퍼 형상, 오목 형상 혹은 볼록 형상의 기하 구조를 실질적으로 가질 수 있다.

Colored data storage media

Protective coating material

A protective coating material comprising (meth)acrylate derivatives of the following formulas 1, 2, 3, 4 and 5 within the following ranges of a, b, c, d and e % by weight, respectively: 5≦a≦80, 0≦b≦30, 0≦c≦30, 5≦d≦50, 0≦e≦50, provided that a+b+c+d+e=100, ##STR1## wherein each of R 1 to R 3 is H or CH 3 , and R 4 is CH 2 CH 3 or CH 2 OH, ##STR2## wherein each of R 5 to R 8 is H or CH 3 , ##STR3## wherein each of R 9 to R 14 is H or CH 3 , CH.sub.2 ═C(R.sub.15)COO(CH.sub.2).sub.n OCOC(R.sub.16)═CH.sub.2 4 wherein each of R 15 and R 16 is H or CH 3 , and n is an integer of from 2 to 10. ##STR4## wherein R17 is H or CH 3 .

Active energy ray-curable composition and optical recording medium having cured product of the composition

An active energy ray-curable composition comprising (A) an epoxy resin, (B) a compound selected from the group consisting of sulfonium salts and cyclo­pentadienyl iron compounds, (C) a compound selected from the group consisting of acrylates, methacrylates and oligomers thereof, and (D) an organic peroxide, and optionally (E) a rubber component. The composition is useful for an adhesive layer of an optical recording medium.

Ultraviolet-curable adhesive composition

Radiation-curable coatings for optical discs and optical discs incorporating such coatings

Optical disc, e.g., CD-R, DVD, DVD-R, comprising a polymer substrate and a radiation-cured coating provided by curing a radiation-curable coating composition having a pH greater than or equal to 3 and comprising at least one acrylate monomer, and advantageously diacrylate monomers and oligomers and monomers having acrylate functionalities of from 1 to at least 3, wherein the optical disc exhibits jitter of no greater than about 35 ns after being subjected to an environment having a temperature of at least 80° C. and a relative humidity of at least 85% for a period of at least 96 hours.

COMPOSITIONS AND OBJECTS MANUFACTURED THEREFROM

Coating for Optical Discs

An energy-curable flowable coating composition comprising a photoinitiator, and at least one energy-curable monomer, oligomer or resin, at least one of said monomer, oligomer or resin being filled with nanoparticles of an inorganic material, can be used as the covering layer of optical discs, such as DVD, HD-DVD or Blu-Ray discs, and has enhanced scratch resistance and reduced shrinkage.

Optical recording medium, optical recording method and optical recording device

An optical recording medium having a substrate and at least a recording layer disposed on the substrate, the recording layer comprising at least one squarylium metal chelate compound which comprises a squarylium compound and a metal; and at least one azo metal chelate compound which comprises another metal and an azo compound expressed by the following formula (A-I): where A and B each independently expresses a residue forming one of a) a heterocyclic ring which may comprise a substituent and b) aromatic ring which may comprise a substituent, by combination with corresponding carbon atoms respectively bonded to A or B, and X expresses an active-hydrogen-containing substituent group. An optical recording method, and optical recording device using the same optical recording medium.

UV Curing Adhesive Composition

360∼450nm의 파장에서의 몰 흡광 계수(molar absorption coefficient)가 400 이상인 광중합 개시제 및 자외선 경화성 화합물로 된 자외선 경화형 접착제 조성물. An ultraviolet curable adhesive composition comprising a photopolymerization initiator and an ultraviolet curable compound having a molar absorption coefficient of 400 or more at a wavelength of 360 to 450 nm. 본 발명의 접착제 조성물은 280∼380nm의 파장의 에너지선에 대한 전선(全線) 투과율이 0.01%∼20%인 기재(基材) 끼리를 접착할 수가 있다. The adhesive composition of this invention can adhere | attach the base materials whose electric wire transmittance | permeability is 0.01%-20% with respect to the energy beam of the wavelength of 280-380 nm.

복합 수지, 이를 포함하는 코팅제 조성물, 및 피복 물품

본 발명은 (1) 다공질 및/또는 내부에 공극을 갖는 무기 산화물 미립자 (A)의 존재하에, (2) 하기 비스실란 화합물 (B)를 포함하는 유기 규소 화합물을 가수분해·축합시킴으로써 얻어지는, (1) 성분과 (2) 성분의 가수분해·축합물이 일체화된 복합 수지를 제공한다. <화학식 B> X n R 3 - n Si-Y-SiR 3 - n X n 식 중, Y는 불소 원자로 치환가능한 2가의 유기기 또는 방향환을 포함할 수도 있는 2가의 유기기이고, R은 1가의 유기기이며, X는 OH기 또는 가수분해성기이고, n=1, 2 또는 3이다. 본 발명의 복합 수지는 다공질 및/또는 내부에 공극을 갖는 무기 산화물 미립자를 함유하기 때문에, 수지 중에 공극을 갖는다. 굴절률이 가장 낮은 공기를 포함하기 때문에, 경화물 또는 경화 피막으로 하면 굴절률을 낮출 수 있다. 복합 수지, 코팅제 조성물, 피복 물품

光記録媒体

(57)【要約】 【課題】 記録マーク以外の領域（結晶状態）での記録 層の吸収率（Ａｃ）と記録マーク（非結晶状態）での記 録層の吸収率（Ａａ）との差が小さいか、Ａｃ＞Ａａで あり、ＺｎＳとＳｉＯ 2 とを主成分とする誘電体層を記 録層の両側に有する相変化型光記録媒体において、オー バーライト可能回数を増大させる。 【解決手段】 記録層の下側に第１誘電体層を、上側に 第２誘電体層を有し、Ａｃ／Ａａ≧０．９であること、 および／または、光透過率が１％以上であること、を満 足し、第１誘電体層が、基体側に誘電体層１ａを、記録 層側に誘電体層１ｂを含み、［ＳｉＯ 2 ／（ＺｎＳ＋Ｓ ｉＯ 2 ）］が、誘電体層１ａにおいて２〜４０モル％ （４０モル％を含まず）、誘電体層１ｂにおいて４０〜 ８０モル％、第２誘電体層において４０〜８０モル％で あり、第２誘電体層の厚さが１０〜３５nmである光記録 媒体。

Optical information medium having separate recording layers

레이저 빔(14, 15)을 사용하여 재기록가능한 기록용의 광 정보매체는, 2개의 유전층(9, 11) 사이에 삽입된 상변화형 기록층(10)을 구비한 제 1 기록 적층체(8)와, 2개의 유전층(4, 6) 사이에 삽입된 상변화형 기록층(5)을 구비한 제 2 기록 적층체(2)를 갖는다. 투명 스페이서층(3)은, 제 1 기록 적층체(8)와 제 2 기록 적층체(2) 사이에 삽입된다. 금속 거울층(3)은, 투명 스페이서층(7)과 반대쪽의 면에 제 2 기록 적층체(2)에 인접하여 존재한다. 제 1 기록 적층체(8)는, 대체로 성장 중심의 또는 대체로 핵형성 중심의 결정화를 갖는 상변화형 기록층(10)을 구비한다. 제 2 기록 적층체(2)는, 제 1 기록 적층체(8)에 대해 선택된 형태와 다른 형태의 상변화형 기록층(5)을 구비한다. 기록층들(5, 10)에 대해 거의 동일한 레이저 광 기록 펄스 방식과 기록 속도로 최적의 기록 및 소거 거동이 달성된다. An optical information carrier for recording rewritable using laser beams 14, 15 includes a first recording stack 8 having a phase change recording layer 10 interposed between two dielectric layers 9, 11. And a second recording stack 2 having a phase change recording layer 5 interposed between the two dielectric layers 4 and 6. The transparent spacer layer 3 is inserted between the first recording stack 8 and the second recording stack 2. The metal mirror layer 3 exists adjacent to the second recording stack 2 on the surface opposite to the transparent spacer layer 7. The first recording stack 8 is provided with a phase change type recording layer 10 having a crystallization center of growth or generally nucleation center. The second recording stack 2 includes a phase change recording layer 5 in a form different from that selected for the first recording stack 8. Optimal recording and erasing behavior is achieved with the same laser light recording pulse scheme and writing speed for the recording layers 5, 10. 광 정보매체, 결정화, 핵형성, 성장, 상변화 기록 Optical information carrier, crystallization, nucleation, growth, phase change recording

감광성 수지 조성물, 그 경화물 및 그를 함유하는 필름

[과제] 낮은 커얼로 두꺼운 막의 도공이 가능하고, 크랙이 발생하지 않는 하드코팅에 적합한 감광성 수지 조성물을 제공, 또한 투명성, 저흡수성이 우수하고, 또한 휨 현상이 적은 고내구성을 갖는 고밀도 광디스크용 보호 코팅제용 수지 조성물과 그 경화물의 제공. [해결수단] 디이소시아네이트 화합물(a)과 분자 중에 적어도 2 이상의 히드록시기를 갖는 알코올 화합물(b)의 반응물인 이소시아네이트 화합물(A), 또는 디이소시아네이트 화합물(a) 중 어느 한 이소시아네이트 기가 이소시아누레이트 고리 구조를 형성하고 있는 이소시아네이트 화합물(A')과, 다가 알코올의 (메타)아크릴레이트 화합물로서의 1 이상의 히드록시 기를 갖는 다관능 (메타)아크릴레이트 화합물 및 모든 히드록시기가 에스테르 결합한 다관능 (메타)아크릴레이트 화합물을 함유하는 다관능 (메타)아크릴레이트 화합물의 혼합물(B)을 반응시켜 얻어지는 감광성 수지. 감광성 수지, 하드코팅

光学媒体用保护性uv可固化覆盖层

本发明涉及一种光盘基板用保护性UV可固化或光可成像覆盖层，以及一种将该保护性覆盖层涂敷至光学基板的方法。该UV可固化或光可成像层作为干膜涂敷，且具有高透明度，并固化成挠性、抗刮、不收缩的膜，其对下层的基板具有良好的粘附性。

Beschichtetes Erzeugnis enthaltend eine hochbrechende und kratzfeste Schicht

Die Erfindung betrifft ein beschichtetes Erzeugnis, enthaltend ein Substrat (S) und eine Beschichtung (A), wobei die Beschichtung (A) dadurch gekennzeichnet ist, dass diese einen Realteil n des Brechungsindex von mindestens 1,70, einen Imaginäranteil k des Brechungsindex von höchstens 0,016, eine Oberflächenrauigkeit als Ra-Wert von weniger als 20 nm und eine Kratzfestigkeit von kleiner oder gleich 0,75 µm Kratztiefe aufweist, wobei der Realteil und der Imaginäranteil des Brechnungsindex bei einer Wellenlänge von 400-410 nm (d. h. im Wellenlängenbereich des blauen Lasers) gemessen wurden, wobei die Oberflächenrauigkeit als Ra-Wert mittels AFM (atomic force microscopy) gemessen wurde und wobei zur Bestimmung der Kratzfestigkeit auf die Beschvon 50 µm bei einer Vorschubgeschwindigkeit von 1,5 cm/s und einem Auflagegewicht von 40 g geführt wurde und die resultierende Kratztiefe gemessen wurde. Weiterer Gegenstand der Erfindung ist ein Verfahren zur Herstellung der beschichteten Erzeugnisse und deren Verwendung zur Herstellung von optischen Datenspeichern sowie die zur Herstellung der beschichteten Erzeugnisse eingesetzte Gießlösung.

Highly refractive, scratchproof tio2 coatings in mono- and multilayers

The invention relates to coated products comprising a substrate (S) having a coating made of a single, highly refractive, and scratchproof layer (A) or having a multilayer construction, wherein layers (A) alternate with less refractive layers (B), wherein the layers (A) are characterized in that they comprise particularly finely distributed TiO2 nanoparticles.

Thioether containing photopolymerizable compositions

A photopolymerizable composition comprising a crosslinking agent, a UV sensitive photopolymerization initiator and a thioether compound having a vinyl ester or vinyl amide component; wherein the crosslinking agent and the thioether may be the same compound.

Rewritable optical information medium

2개의 유전층(3, 5) 사이에 삽입된 상변화 기록층(4)과, Si, Ge, Mo 또는 W과 같은 물질로 이루어진 광흡수층(6)과, 제 3 유전층(7) 및 금속 거울층(8)을 구비한 IPIAIM 적층체(2)를 갖는 재기록가능한 광 정보매체에 대한 설명이 주어진다. 광흡수층(6)은 비정질 상태와 결정 상태 사이의 광흡수의 차이를 최소한으로 줄이므로, 기록 마크 왜곡을 감소시킨다. 이와 같은 위치의 광흡수층의 존재는, 비정질 상태와 결정 상태 사이의 광학 위상차가 거의 제로값이 되도록 하여, 기록매체가 랜드-홈 레코딩용으로 적합하게 만든다. Phase change recording layer 4 interposed between two dielectric layers 3 and 5, light absorbing layer 6 made of a material such as Si, Ge, Mo or W, third dielectric layer 7 and metal mirror layer A description is given of a rewritable optical information carrier having an IPIAIM stack 2 with (8). The light absorption layer 6 reduces the difference in light absorption between the amorphous state and the crystalline state to a minimum, thereby reducing recording mark distortion. The presence of the light absorbing layer at this position causes the optical phase difference between the amorphous state and the crystalline state to be almost zero, making the recording medium suitable for land-home recording. 광 정보매체, 적층체, 광흡수층, 기록층, 순환성, 기록 마크 왜곡, 랜드-홈 레코딩 Optical information carrier, laminate, light absorbing layer, recording layer, circularity, recording mark distortion, land-home recording

METHOD FOR PRODUCING HYBRID DISKS AND HYBRID DISKS

Optical information recording medium

기판상에 적어도 제1 정보층, 분리층, 제2 정보층을 이 순서대로 포함하는 광학정보 기록매체에서, 제1 정보층을 기판측으로부터 제1 보호층, 기록층, 제2 보호층을 이 순서대로 포함하도록 형성하고, 또 제1 보호층 및 제2 보호층의 적어도 한 쪽을 적어도 두 개의 층으로 구성하고, 이 적어도 두개의 층은 기록층에 가까운 측으로부터 순서대로 제1층 및 제2층을 포함하고 있고, 제 2층을 구성하는 재료의 열전도율은 제1층을 구성하는 재료의 열전도율보다도 크게 한다. In an optical information recording medium comprising at least a first information layer, a separation layer, and a second information layer on the substrate in this order, the first information layer is separated from the substrate side by the first protective layer, the recording layer, and the second protective layer. And include at least one of the first protective layer and the second protective layer in at least two layers, the at least two layers being the first layer and the second in order from the side close to the recording layer. The layer includes a layer, and the thermal conductivity of the material constituting the second layer is larger than the thermal conductivity of the material constituting the first layer.

Film forming apparatus, film forming method and recording medium

magneto-optical disk and method for fabricating the same

낮은 레이저 기록 파워로도 효율적인 데이터 기록을 수행할 수 있는 광자기 디스크 및 그 제조방법에 관한 것으로, 기판상에 제 1 유전체층을 형성하고, N 가스와 Ar 가스를 함께 사용하는 반응성 스퍼터링 방법이나 또는 N, P, S, Se, Br, Te, I 중 어느 한 물질이 소량 첨가된 재생층용 합금 타겟을 사용하는 스퍼터링 방법으로 제 1 유전체층상에 재생층을 형성한 다음, 재생층상에 제 2 유전체층, 기록층, 보호층을 순차적으로 형성함으로써, 낮은 레이저 기록 파워로도 효율적으로 정보를 기록할 수 있으므로 경제적으로 잇점이 있다. The present invention relates to a magneto-optical disk capable of performing efficient data recording even with low laser recording power, and to a method of manufacturing the same, which comprises forming a first dielectric layer on a substrate and using N gas and Ar gas together, or N A regeneration layer was formed on the first dielectric layer by a sputtering method using an alloy target for the regeneration layer to which any one of P, S, Se, Br, Te, and I was added, and then the second dielectric layer, recording on the regeneration layer. By sequentially forming the layers and the protective layers, information can be efficiently recorded even at a low laser recording power, which is economically advantageous.

有限使用的光学介质及其制造方法

本发明提供了一种用于使光学上可读取的介质不可读取的方法，包括下述步骤：为所述光学上可读取的介质提供非平的表面，所述非平的表面位于光学上可读取的介质上，使得入射束在遇到光学上可读取的数据结构之前遇到该非平的表面，所述非平的表面禁止所述数据结构的读取；以及将涂层施加到所述非平表面层，以使所述非平表面变得平滑并且允许所述数据结构的读取。还提供了一种光学上可读取的介质，包括：用于容纳数据结构的保护层，所述数据结构配置为由入射束读取；沿着所述数据结构和入射束的光学路径的非平表面媒介物；以及沿着所述非平表面和入射束的光学路径与所述非平表面和媒介物相邻的涂层，所述涂层使得所述非平表面平滑。

Multi-layer structure photo information media

광디스크, 광테이프, 광카드 등의 광정보매체에 관한 것으로서, 평면적으로 고기록밀도이고 또한 3차원적인 기록재생이 가능하고, 저렴하게 제작가능한 다층구조 광정보매체를 제공하기 위해, 평면정보영역을 각각 2면∼4면 마련한 제1 및 제2 기판을 제1 및 제2 기판이 각각 바깥쪽으로 위치하도록 배치된 구조를 갖고, 제1 및 제2 기판의 두께를 각각 0.52mm이상, 0.65mm이하로 한 다층구조 광정보매체는 예를 들면 각각의 기판 또는 투명한 물질층의 표면에 마련된 오목볼록과 그 위에 마련된 반사층으로 이루어지고, 기판에서 가장 떨어진 위치의 평면정보영역은 반투명막으로 바꾸어서 반사층을 갖고, 기판에서 가장 떨어진 위치의 평면정보영역은 기록층과 기록층상에 마련된 반사층으로 이루어지는 것이어도 좋다. In order to provide a multi-layered optical information medium such as an optical disc, an optical tape, and an optical card, which has a high recording density and can be recorded and reproduced in three dimensions in a planar manner, Wherein the first and second substrates are respectively arranged so that the first and second substrates are respectively positioned outwardly and the thicknesses of the first and second substrates are respectively set to 0.52 mm or more and 0.65 mm or less For example, a multi-layered optical information medium comprises concave convexities formed on the surface of each substrate or a transparent material layer and a reflective layer provided thereon, and a planar information region at the farthest position from the substrate is changed to a translucent film, The planar information region at the farthest position from the substrate may be a recording layer and a reflective layer provided on the recording layer. 이러한 것에 의해 에러 없이 정보를 재생할 수 있는 효과가 있다. Thereby, there is an effect that information can be reproduced without error.

Multilayer optical information medium

A multilayer optical information medium provided with structure in which first and second substrates respectively provided with two to four layers of planar information areas are respectively arranged outside wherein the thickness of the above-described first and second substrates is set in the range of 0.52 to 0.65 mm. The above-described planar information area consists of embossed pits provided, for example on the surface of respective substrates or on the surface of a layer formed by transparent material and a semi-reflective layer provided on the embossed pits. A planar information area arranged in the farthest position from respective substrates is provided with a reflective layer in place of the above-described semi-reflective layer. The planar information area arranged in the farthest position from respective substrates may be constituted by a recording layer and a reflective layer provided on the recording layer.

Optical recording medium & process for producing the same

내용 없음. No content.

Optical operation method for optical device, and optical control device

(57)【要約】 【課題】 フォトクロミック材料などのフォトンモード 反応を利用した光学デバイスにおいて、半導体レーザー や発光ダイオードなどの発光素子を用い、紫外光などの 従来使用することができなかった波長域の光を用いて光 学的操作を行う。 【解決手段】 フォトンモード反応を生じる光記録媒体 ６に対して、パルス電流駆動回路１２によりパルス電流 で駆動した発光素子１０からの出射光を照射し、光記録 媒体６でのフォトンモード反応を生じさせることを特徴 としている。

包含高折射率和耐刮擦的层的经涂覆制品

本发明涉及一种包含基材(S)和涂层(A)的经涂覆制品，该涂层(A)的特征在于其具有至少1.70的复数折射率的实部n、最多0.016的复数折射率的虚部k、小于20nm的作为Ra值的表面粗糙度和小于或等于0.75μm刮擦深度的耐刮擦性(Kratzfestigkeit)，其中折射率的实部和虚部在400－410nm波长下(即在蓝色激光的波长范围内)测量，其中作为Ra值的表面粗糙度借助于AFM(原子力显微镜法)测量，和其中为了测量耐刮擦性，将尖部半径为50μm的金刚石针在1.5cm/s的推进速度下并且采用40g的施加重量在涂层上移动，并且测量所得的刮擦深度。本发明的另一主题在于一种用于制备该经涂覆制品的方法和涉及该经涂覆制品用于制造光学数据存储器中的用途，并且还涉及用于制备该经涂覆制品的流延溶液。

Optical recording medium & production process for the medium

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Optical information recording medium

本发明提供一种不会在中间层与透光层的界面上产生剥离的光信息记录媒体。光信息记录媒体10在基板11上依次具备反光层12、色素记录层13、由无机物构成的中间层14、及由树脂构成的透光层16，从透光层侧照射激光而对信息进行记录再生，其中，透光层遍及中间层的内周缘上到外周缘上并覆盖中间层的表面，且透光层的外周缘部附近与基板在围绕基板的外周侧面11d的环状区域接触。因此，基板与透光层的密着性提高。由此，可以防止在中间层与透光层的界面上产生剥离。

Highly refractive, scratchproof tio2 coatings in mono- and multilayers

本发明涉及涂覆制品，其含有基材(S)，该基材具有由单层高折射且耐刮擦的层(A)组成的涂层或者具有多层结构，在该多层结构中，层(A)与低折射的层(B)交替，其中层(A)的特征在于其包含特别细分散的TiO 2 纳米颗粒。

Optical recording material

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Color data storage medium

カラーデータ記憶媒体は着色剤とプラスチックを含む基板を有しており、１．２ｍｍ厚の着色基板（ディスク）通過時における再生レーザー波長での基板の透過率は約８５％以下である。第二発明の記憶媒体は蛍光着色とプラスチックを含む基板を有しており、該基板は再生レーザー波長と異なる蛍光色発光波長を有する。

Methods and appts. for rendering optically encoded medium unreadable

本发明提供了一种使光学可读介质(20)不可读的方法和装置。方法包括步骤:(a)结介质提供一种降低编入了信息的表面之反射率的光学活性机制:(b)将介质暴露在光辐照之下以读出信息;和(c)在曝光步骤期间启动光学活化机制的工作。在另一方面,光学活性机制导致读出光束散焦,由此降低读出光束从编入了信息的表面的反射。在另一实施例中,本发明的方法使层的表面变形,导致读出光束偏差或不能正确地停在轨道上。在另一实施例中,除去表面部分而暴露在大气环境中,例如通过蒸发或升华。

Optical disk and method for manufacturing optical disk

스탬퍼 기판(20)을 L0층 기판(10)에 접합하여 소망하는 두께의 광디스크를 형성한다. 스탬퍼 기판(20)의 한쪽의 주면에는, L1층용의 미세한 요철을 전사하기 위한 요철이 형성되어 있고, L0층 기판(10)에의 스탬퍼 기판(20)의 접합은, 스탬퍼 기판(20)에 의해, 중간층(32)에 L1층용의 미세한 요철을 전사함으로써 형성하고 나서 행한다. 광디스크

Optical recording medium having a metal reflective film capable of additional recording

Optical information recording medium and optical information recording, reproducing and erasing method

강성 기판, 강성 기판상에 형성되고 레이저광에 의해 광학적으로 검출되는 정보를 기록하는 기록막 혹은 강성 기판상에 형성되고 광학적으로 검출되는 정보를 기록하는 요철 피트, 기록막상에 형성된 투명 박판을 갖는 광정보기록매체가 개시된다. 광정보기록, 재생 및 소거방법에 있어서, 레이저광에 의해 물리적 혹은 화학적으로 변화되는 기록부재가 강성기판상에 형성되어 있는 광정보기록매체를 제공하는 단계를 구비하고, 정보의 기록, 재생 및 소거가 강성 기판상에 형성된 투명 박판을 통해 강성 기판에 입사하는 레이저광에 의해 상기 기록부재를 통해 행해지는 것을 특징으로 하는 광정보기록, 재생 및 소거방법이 또한 개시된다.

Optical information recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Film for laser recording

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Phase change optical recording meidum

提供一种高线速度时的擦除率高、记录灵敏度更高、OW周期特性及耐环境性优良的相变光记录媒体。利用记录层在晶相和非晶相之间的可逆的相变,来进行信息的记录、擦除,其中,保护层由下述膜来形成,该膜由Ta或Al的氧化物、和至少1种碳化物构成,碳化物的含量是1～40mol%。

Patent JPS6330880B2

Method for producing hybrid disk, and hybrid disk

하이브리드 디스크는 주어진 스펙트럼 대역에서 투명한 제 1 기판(1)의 다음에 반투과성 층 시스템(2)을 적층시키는 형식으로 제조된다. 그와 관련하여, 다시 그 다음에는 전술된 스펙트럼 대역에서 투명한 제 2 기판(5)이 마련된다. 그 다음에는 반사층 시스템(6)이 이어진다. 제 1 기판 상에는 역시 전술된 스펙트럼 대역에서 투명한 방습층 시스템이 마련된다. 그 경우, 반투과성 층 시스템. 반사층 시스템, 및 방습층 시스템은 동일 유형의 진공 코팅 방법에 의해 적층된다. The hybrid disc is produced in such a way that the semipermeable layer system 2 is laminated after the transparent first substrate 1 in a given spectral band. In that regard, again a second substrate 5 is provided, which is then transparent in the aforementioned spectral bands. This is followed by the reflective layer system 6. On the first substrate is also provided a moisture barrier layer system that is also transparent in the aforementioned spectral bands. In that case, a semipermeable layer system. The reflective layer system and the moisture barrier layer system are laminated by the same type of vacuum coating method. 하이브리드 디스크, 기판, 반투과성 층 시스템, 반사층 시스템, 방습층 시스템 Hybrid Disc, Substrate, Semi-Permeable Layer System, Reflective Layer System, Moisture Proof Layer System

Hard coat resin composition, cured film, laminate, optical recording medium, and cured film production method

Optical disk and method of manufacture thereof

예를 들어 15GB에 미치는, 혹은 이 이상의 고기록 용량화를 도모할 수 있는 광 디스크 및 그 제조 방법으로써, 기록 신호에 따른 피트 열이 형성된 광 디스크 기판(3)과, 이 광 디스크 기판(3)의 피트 열(2)이 형성된 면에 성막된 반사막(4)과, 이 반사막(4) 상에 형성된 광투과층(5)을 구비하여 이루어지며, 그 기록의 판독, 즉 재생은 그 피트 열로서 기록된 신호를 표면의 광투과층(5) 측으로부터, 파장 350㎚ 내지 420㎚인 짧은 파장의 레이저광을 조사하여 판독하는 구성으로 한다. For example, an optical disk capable of achieving a high recording capacity of 15 GB or more, and a method of manufacturing the same, includes an optical disk substrate 3 having a pit array corresponding to a recording signal, and the optical disk substrate 3. A reflective film 4 formed on the surface on which the pit rows 2 are formed, and a light transmitting layer 5 formed on the reflective film 4, and the reading or reproducing of the recording is performed as the pit rows. The recorded signal is configured to irradiate and read a laser beam of short wavelength having a wavelength of 350 nm to 420 nm from the light transmitting layer 5 side of the surface. 또한, 이 광 디스크에 있어서, 그 재생 레이저광이 조사되는 광투과층 측으로부터 본 피트 열이 80㎚ 내지 250㎚인 길이 및 폭을 갖는 피트를 포함하고, 반사막의 두께는 20㎚ 이하, 예를 들어 8㎚ 이상으로 한다. In addition, in this optical disk, the pit rows viewed from the light transmitting layer side to which the reproduction laser light is irradiated include pit having a length and width of 80 nm to 250 nm, and the thickness of the reflecting film is 20 nm or less, for example. For example, it is 8 nm or more. 광 디스크, 피트, 광 디스크 기판, 반사막, 광투과층, 기록용 레이저 광원, 광 검출기, 집광 렌즈, 거울, 레이저광, 위치 검출 소자 Optical disk, pit, optical disk substrate, reflective film, light transmitting layer, laser light source for recording, photo detector, condenser lens, mirror, laser light, position detecting element

Multilayer optical disc

제 1 정보층과 제 2 정보층을 갖는 다층 광 디스크에서, 보다 고품질의 재생이 가능해진다. 이를 위해, 상기 제 1 정보층과 제 2 정보층이 적층되어 1장의 광 디스크를 형성하는 구성이 제공된다. 이때, 상기 제 1 정보층은 770 nm 내지 830 nm의 파장 범위의 제 1 재생광에 대해 90％ 이상의 반사율을 갖는 금속 반사막을 구비하고, 상기 제 2 정보층은 상기 언급된 제 1 재생광에 대한 굴절률 ns 1 과, 615 nm 내지 655 nm의 파장 범위의 제 2 재생광에 대한 굴절률 ns 2 의 각각의 실수부에서의 비 ns 2 /ns 1 가 1.05 이상인 반투명 반사막을 구비한다.

Coated optical disks

조사-경화성 조성물로 만들어진 코팅, 기판, 및 금속층을 함유하는 광학 디스크. 조사-경화성 조성물은 알칸디올 디아크릴레이트, 알칸디올 디메타크릴레이트, 알켄 글리콜 디아크릴레이트, 알켄 글리콜 디메타크릴레이트, 및 이들의 혼합물 중에서 선택된 제 1 성분 및 아크릴레이트- 또는 메타크릴레이트-함유 알콕실화 비스페놀 A 화합물을 함유하는 제 2 성분을 포함한다. 이 조성물은 금속 기판에 대한 코팅의 접착력을 증진시키기 위한 접착력 증진제와 광개시제를 추가로 포함한다. An optical disc containing a coating, a substrate, and a metal layer made of an radiation-curable composition. The radiation-curable composition comprises an acrylate- or methacrylate-containing first component selected from alkanediol diacrylate, alkanediol dimethacrylate, alkene glycol diacrylate, alkene glycol dimethacrylate, and mixtures thereof A second component containing an alkoxylated bisphenol A compound is included. The composition further comprises an adhesion promoter and a photoinitiator to enhance the adhesion of the coating to the metal substrate.

Addition type optical information recording member

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Photosensitive Resin Compositions, Cured Articles of The Compositions, And Films Containing The Compositions

[과제] 낮은 커얼로 두꺼운 막의 도공이 가능하고, 크랙이 발생하지 않는 하드코팅에 적합한 감광성 수지 조성물을 제공, 또한 투명성, 저흡수성이 우수하고, 또한 휨 현상이 적은 고내구성을 갖는 고밀도 광디스크용 보호 코팅제용 수지 조성물과 그 경화물의 제공. [PROBLEMS] To provide a photoresist composition suitable for hard coating that is capable of coating a thick film with low curl, and does not generate cracks, and has high durability, high transparency, low water absorption, and low durability, and high durability. Provision of the resin composition for coating agents and its hardened | cured material. [해결수단] 디이소시아네이트 화합물(a)과 분자 중에 적어도 2 이상의 히드록시기를 갖는 알코올 화합물(b)의 반응물인 이소시아네이트 화합물(A), 또는 디이소시아네이트 화합물(a) 중 어느 한 이소시아네이트 기가 이소시아누레이트 고리 구조를 형성하고 있는 이소시아네이트 화합물(A')과, 다가 알코올의 (메타)아크릴레이트 화합물로서의 1 이상의 히드록시 기를 갖는 다관능 (메타)아크릴레이트 화합물 및 모든 히드록시기가 에스테르 결합한 다관능 (메타)아크릴레이트 화합물을 함유하는 다관능 (메타)아크릴레이트 화합물의 혼합물(B)을 반응시켜 얻어지는 감광성 수지. Isocyanate ring of the isocyanate compound (A) or the diisocyanate compound (a) which is a reaction product of the diisocyanate compound (a) and the alcohol compound (b) which has at least 2 or more hydroxy groups in a molecule | numerator isocyanurate ring The polyfunctional (meth) acrylate which the isocyanate compound (A ') which forms the structure, the polyfunctional (meth) acrylate compound which has one or more hydroxy groups as a (meth) acrylate compound of a polyhydric alcohol, and all the hydroxyl groups ester-bonded. Photosensitive resin obtained by making the mixture (B) of the polyfunctional (meth) acrylate compound containing a compound react. 감광성 수지, 하드코팅 Photosensitive resin, hard coating

Optical recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical disc and manufacturing method thereof

METHOD AND DEVICE FOR TRANSFER OF AN OPTICALLY ENCRYED INFORMATION MEDIA TO AN UNRESTABLE

optical disk

本発明は、光ディスク装置の記録媒体として用いられる光ディスクであり、ディスク基板（１１０）の一方の面に設けた記録層（１１２）上に形成した透明保護膜（１２０）と膜質及び膜構造をほぼ共通にする印刷ラベル膜（１３０）をディスク基板の他方の面に設けた。印刷ラベル膜は、透明保護膜と同様のポリカーボネートを主体とする合成樹脂膜よりなり、スクリーン印刷等によってディスク基板に印刷されて形成される。これにより、光ディスクは、一方及び他方の面側で膜質及び膜構造が共通の構造とされ、光ディスクの厚さ方向の構造の非対称性によって生じる反りに起因するスキューの発生を抑制できる。光ディスクは、ディスク基板の他方の面に設けられる印刷ラベル膜によって、記録された情報の内容を表示する表示機能を得る。 The present invention is an optical disk used as a recording medium of an optical disk device, and has almost the same film quality and film structure as a transparent protective film (120) formed on a recording layer (112) provided on one surface of a disk substrate (110). A common printed label film (130) was provided on the other surface of the disk substrate. The printed label film is made of a synthetic resin film mainly composed of polycarbonate similar to the transparent protective film, and is formed by printing on a disk substrate by screen printing or the like. As a result, the optical disk has a common film quality and film structure on one and other surfaces, and the occurrence of skew due to warpage caused by the asymmetry of the structure in the thickness direction of the optical disk can be suppressed. An optical disc has a display function of displaying the contents of recorded information by a printed label film provided on the other surface of the disc substrate.

Uv curable composition for optical discs and optical disc

本发明提供含有具有聚(全氟亚烷基醚)链和紫外线固化性基团的含氟紫外线固化性树脂的光盘用紫外线固化型组合物，由于含氟紫外线固化性树脂在组合物中适当地相溶且在涂膜的表面或其附近适当地偏集，因此能够形成即使在指纹等的油分附着时其液滴尺寸也小、不易产生透过激发波长短的激光时的光的散射的光盘的最外层，能够形成信号的记录再生良好的光盘。

Film-forming apparatus, film-forming method and recording medium

피처리 기판을 내부에 유지하는 처리 용기와, 상기 처리 용기내에, 터셔리뷰톡실기를 리간드로 하는 금속 알콕사이드로 이루어지는 제 1 기상 원료를 공급하는 제 1 가스 공급 수단과, 상기 처리 용기내에, 실리콘 알콕사이드 원료로 이루어지는 제 2 기상 원료를 공급하는 제 2 가스 공급 수단을 갖고, 상기 제 1 가스 공급 수단과 상기 제 2 가스 공급 수단은, 상기 제 1 기상 원료와 상기 제 2 기상 원료를 예비 반응시키는 예비 반응 수단에 접속되고, 예비 반응후의 상기 제 1 기상 원료와 상기 제 2 기상 원료가 상기 처리 용기내에 공급되는 구조인 것을 특징으로 하는 성막 장치. A first gas supply means for supplying a processing container for holding a substrate to be processed inside, a first gaseous raw material comprising a metal alkoxide containing a tertiary toxin group as a ligand, and silicon alkoxide in the processing container. It has a 2nd gas supply means which supplies the 2nd gaseous-phase raw material which consists of a raw material, The said 1st gas supply means and the said 2nd gas supply means are the preliminary reaction which pre-reacts a said 1st gaseous-phase raw material and a said 2nd gaseous-phase raw material. And a first gas phase raw material and a second gas phase raw material after the preliminary reaction are supplied into the processing container.

METHOD FOR FORMING Ge-Sb-Te BASED FILM AND STORAGE MEDIUM

본 발명은 CVD에 의해 목표의 조성의 Ge-Sb-Te계 막을 얻을 수 있는 Ge-Sb-Te계 막의 성막 방법을 제공한다. 처리 용기 내에 기판을 배치하고, 기체상의 Ge 원료와, 기체상의 Sb 원료와, 기체상의 Te 원료를 상기 처리 용기 내에 도입해서 CVD에 의해 기판 상에 Ge-Sb-Te계 막을 성막할 때에, 성막에 앞서 가스의 통류 경로 및/또는 반응 공간에 Te 함유 재료를 형성하고, 그 후 상기 처리 용기 내에 소정 유량의 기체상의 Ge 원료, 기체상의 Sb 원료 및 기체상의 Te 원료, 또는 기체상의 Ge 원료 및 기체상의 Sb 원료를 도입해서 소정의 조성의 Ge-Sb-Te계 막을 성막한다. The present invention provides a method for forming a Ge-Sb-Te based film capable of obtaining a Ge-Sb-Te based film having a target composition by CVD. When the substrate is placed in the processing container, the gaseous Ge raw material, the gaseous Sb raw material, and the gaseous Te raw material are introduced into the processing container to form a Ge-Sb-Te based film on the substrate by CVD. A Te-containing material is previously formed in the gas flow path and / or reaction space, and thereafter a gaseous Ge raw material, a gaseous Sb raw material and a gaseous Te raw material, or a gaseous Ge raw material and a gaseous phase are formed in the processing vessel at a predetermined flow rate. A Sb raw material is introduced to form a Ge-Sb-Te based film of a predetermined composition.

Disc shaped high density recording medium

This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25°C at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit / groove structure of > 85%.

Disc-shaped high-density recording mediums

Optical recording mediums comprising a substrate and a recording layer and a light transmitting layer sequentially disposed on the substrate; wherein the substrate comprises one or more parts selected from the group consisting of injection molded parts, injection molded sandwich structures having a molded surface layer and a molded core layer or two injection molded parts which are UV-bonded, and combinations thereof; and wherein the substrate has a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05.

Reflective coating for an optical disc

An optical disc includes a substrate layer, a cover layer, and an aluminum alloy layer that is between the substrate layer and cover layer, and is adjacent to the substrate layer. The aluminum alloy layer includes a majority amount of aluminum and an additional metal selected from the group consisting of: chromium, titanium, tantalum, and any combination thereof. A method of making an optical disc includes the steps of: forming a substrate layer; sputtering an aluminum alloy target onto the substrate layer to form an aluminum alloy layer; and forming a cover layer; wherein the aluminum alloy layer comprises a majority amount of aluminum and an additional metal selected from the group consisting of: chromium, titanium, tantalum, and any combination thereof.

Protective coat for optical recording medium and optical recording medium

An optical recording medium protecting film which is a protecting film comprising a single transparent film made of a thermoplastic resin, having a retardation of no greater than 15 nm at a wavelength of 550 nm and a K value of no greater than 40 nm at 550 nm, having a glass transition temperature of 120°C or higher and a water absorption of no greater than 1 wt%. R(550) ≤ 15 nm K(550) ≤ 40 nm (the K value being calculated by K = [n z - (n x + n y )/2] x d {where n x , n y and n z are the three-dimensional refractive indexes of the transparent film in the x-axis, y-axis and z-axis directions, respectively, and d is the thickness of the transparent film}). Also, an optical recording medium having a data recording layer and the above-mentioned protecting film on a substrate, wherein light is incident from the protecting film side.

Disc shaped high density recording medium

This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit/groove structure of >85%.

Poly (arylene ether) information storage medium

プラスチック樹脂部分を含む基板であって、プラスチック樹脂部分がポリ（アリーレンエーテル）及びスチレン材料を含み（又はポリ（アリーレンエーテル）及びスチレン材料の反応生成物を含み）、スチレン材料がポリスチレン、スチレン系コポリマー、並びに上述のスチレン材料の１種以上を含む反応生成物及び組合せからなる群から選択される基板と、基板上のデータ層とを含んでなる記憶媒体。ポリ（アリーレンエーテル）は約５０００〜約５００００ＡＭＵの重量平均分子量を有し、ポリスチレンは約１００００〜約３０００００ＡＭＵの重量平均分子量を有する。データ層は、エネルギー場によって少なくとも部分的に読出し、書込み又はこれらの組合せが可能である。さらに、エネルギー場が記憶媒体に接触する場合、エネルギー場はデータ層に入射してから基板に入射し得る。

Optical disk substrate and lightguide plate

Optical recording medium

A disc-shaped recording medium (40) having transcription characteristics for fine signals simultaneously with resonance characteristics and stiffness which are characteristics contrary to the transcription characteristics. At least a recording layer (42) and a light transmitting layer (41) are sequentially formed on a substrate (44,45) and light (L) is illuminated from a light transmitting layer (41) side to record and/or reproduce information signals. The substrate includes a core layer (45) formed of a resin composition comprised of a mixture of two or more resin sorts. The resin composition has tanδ, as an index indicating the internal loss, equal to not less than 0.015 as a system in its entirety. The resin composition constituting the core layer (45) is a compounded resin of the incompatible system and is of an islands-sea structure.

Optical recording medium

A disc-shaped recording medium having transcription characteristics for fine signals simultaneously with resonance characteristics and stiffness which are characteristics contrary to the transcription characteristics. At least a recording layer and a light transmitting layer are sequentially formed on a substrate and light is illuminated from a light transmitting layer side to record and/or reproduce information signals. The substrate includes a core layer formed of a resin composition comprised of a mixture of two or more resin sorts. The resin composition has tanδ, as an index indicating the internal loss, equal to not less than 0.015 as a system in its entirety. The resin composition constituting the core layer is a compounded resin of the incompatible system and is of an islands-sea structure.

Optical recording medium

Optical disk substrate and lightguide plate

An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I): based on 100 parts by weight of polycarbonate resin. There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.

Disc shaped high density recording medium

This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and / or reproducing information signals, said substrate comprising an injection molded part or have an injection molded sandwich structure with a molded surface layer (skin layer) and a molded core layer or a two injection molded parts which are UV-bonded, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25°C at 2000 Hz in accordance to ASTM E 756-05.

Information recording medium

Disclosed is an information recording medium (1, 10) capable of, in the case of recording information signals such as high density information, sufficiently transferring the information signals, and suppressing resonance upon high speed rotation and enhancing the durability of the medium. The medium includes a substrate (2, 11), a recording layer (4, 13) provided on the substrate (2, 11) for recording an information signal, and a light transmission layer (5, 14) laminated on the recording layer (4, 13), wherein an information signal is recorded or reproduced on or from the medium (1, 10) by making light (L) incident on the medium (1, 10) from the light transmission layer side. The substrate (2, 11) includes a core layer (6, 15) made from a resin, and a surface layer (7, 16, 17) made from a resin and integrated with the core layer (6, 15). The surface layer (7, 16, 17) has on its one side plane information signals in the form of irregularities on the recording layer side and has a fluidity which is larger than that of the core layer (6, 15) in the case where both the surface layer (7, 16, 17) and the core layer (6, 15) are in a molten state at the same temperature.

Optical recording medium

A disc-shaped recording medium having transcription characteristics for fine signals simultaneously with resonance characteristics and stiffness which are characteristics contrary to the transcription characteristics. At least a recording layer and a light transmitting layer are sequentially formed on a substrate and light is illuminated from a light transmitting layer side to record and/or reproduce information signals. The substrate includes a core layer formed of a resin composition comprised of a mixture of two or more resin sorts. The resin composition has tanδ, as an index indicating the internal loss, equal to not less than 0.015 as a system in its entirety. The resin composition constituting the core layer is a compounded resin of the incompatible system and is of an islands-sea structure.

Optical disk substrate and lightguide plate

An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I): based on 100 parts by weight of polycarbonate resin. There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.

Informat10n recording medium and information recording and reproducing apparatus using the same

에너지빔의 조사에 의해 정보의 기록이 실행되는 정보기록매체, 또 이것을 사용한 정보기록재생장치에 관한 것으로서, 기록감도가 양호하고 또한 양질인 재생 신호가 얻어지는 정보기록매체 및 이 정보기록매체를 사용해서 정보의 기록재생시에 신뢰성이 높은 정보기록재생장치를 제공하기 위해서, 에너지빔의 조사에 의해 원자배열변화 또는 전자상태변화에 따라서 기록마크의 기록이 기록층에 실행되고, 기록층에 기록된 기록마크가 에너지빔 조사에 의해 재생되고, 적어도 기록층의 에너지 빔 입사측과는 반대측에 조성이 다른 제1 금속층과 제2 금속층을 구비하고, 그 중 기록층에 가까운 측에 위치하는 제1 금속층의 조성은 Al, Cu, Ag, Au, Pt, Pd 중의 적어도 1개를 주성분으로 하고, 이들 원자의 함유량의 합이 60%이상이고, 제2 금속층의 조성은 Al, Cu, Ag, Au, Pt, Pd 중의 적어도 1개를 주성분으로 하고, 이들 원자의 함유량의 합이 제1 금속층의 그것보다 큰 구성으로 하였다. An information recording medium on which information is recorded by irradiation of an energy beam and an information recording and reproducing apparatus using the information recording medium and an information recording medium on which a recording signal with good recording sensitivity and good quality can be obtained, In order to provide an information recording and reproducing apparatus with high reliability at the time of recording and reproducing information, recording of a recording mark is performed on the recording layer in accordance with a change in atomic arrangement or an electronic state by irradiation of an energy beam, A first metal layer and a second metal layer which are different in composition from each other at the side opposite to the energy beam incidence side of the recording layer and at least the composition of the first metal layer located on the side closer to the recording layer Wherein the total content of these atoms is at least 60%, and the composition of the second metal layer is at least one of Al, Cu, Ag, Au, Pt, and Pd, g, Au, Pt, and Pd as main components, and the sum of the contents of these atoms is larger than that of the first metal layer. 이것에 의해, 신뢰성이 높은 정보의 기록재생을 실행할 수 있다는 효과가 얻어진다. Thereby, it is possible to obtain an effect that recording and reproduction of highly reliable information can be performed.

Radiation-curable coatings for optical discs and optical discs incorporating such coatings

본 발명은 3 이상의 pH를 가지고, 적어도 하나의 아크릴레이트 단량체, 및 유리하게는 디아크릴레이트 단량체 및 올리고머 및, 1 내지 적어도 3의 아크릴레이트 작용가를 갖는 단량체를 포함하는 방사선-경화성 코팅조성물을 경화함으로써 제공된 방사선-경화된 코팅과, 중합체 기재를 포함하는 CD-R, DVD, DVD-R과 같은 광디스크에 관한 것으로서, 상기 광디스크는 적어도 80℃의 온도 및 적어도 85%의 상대습도 환경에서 적어도 96시간동안 있은 후에 약 35ns 이하의 지터를 나타내는 것을 특징으로 한다.

Optical recording materials and optical recording media

하기식 1로된 광 기록 재료 및 그 재료를 포함하는 기록층을 갖는 기록 민감도, 빛 저항도 및 내구성이 우수한 광 기록 매체가 제공된다. An optical recording medium excellent in recording sensitivity, light resistance and durability having an optical recording material of Formula 1 and a recording layer comprising the material is provided. 화학식 1 Formula 1 상기 식에서, X 1 -X 4 각각은 수소 원자, 알킬기, 아릴기, 지방족 고리(alicyclic) 잔기, 아랄킬기, 헤테로고리 링, 치환된 헤테로고리 링, 알콕시기, 아릴옥시기, 혹은 알킬티오기이며, Wherein each X 1 -X 4 is a hydrogen atom, an alkyl group, an aryl group, an alicyclic moiety, an aralkyl group, a heterocyclic ring, a substituted heterocyclic ring, an alkoxy group, an aryloxy group, or an alkylthio group , Y 1 -Y 4 각각은 수소 원자, 할로겐 원자, 니트로기, 프탈이미드메틸기 혹은 술폰아미드기이며, Each of Y 1 -Y 4 is a hydrogen atom, a halogen atom, a nitro group, a phthalimide methyl group or a sulfonamide group, R 1 와 R 2 각각은 수소 원자, 할로겐 원자, 히드록시기, 알킬기, 아릴기, 아랄킬기, 알콕시기, 아릴옥시기, 알킬티오기, 아릴티오기, 알킬아미노기, 디알킬아미노기, 아릴아미노기 혹은 디아릴아미노기이며, R 1 and R 2 each represent a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkylamino group, a dialkylamino group, an arylamino group or a diaryl Amino group, M은 Al,Ga,In,Si,Ge 혹은 Sn이며, M is Al, Ga, In, Si, Ge or Sn, Z는 아조 화합물, 안트라퀴논 화합물 혹은 금속 착염 화합물이며, Z is an azo compound, anthraquinone compound or a metal complex salt compound, n 1 -n 4 는 1-4이며, n 1 -n 4 is 1-4, m 1 -m 4 는 0-4이고, m 1 -m 4 is 0-4, k는 1 또는 2이고, k is 1 or 2, l은 0 또는 1이며, l is 0 or 1, 상기 k+l은 1또는 2이다. K + l is 1 or 2.

Metal complex type squarylium compounds and optical recording media made by using the same

본 발명의 목적은, DVD-R용 기록에 적합한 분광특성, 내광성, 용해성 및 열분해특성을 가진 재료를 제공하는데 있다. 보다 상세하게는, 본 발명은 하기 화학식(Ⅰ)의 금속착체형 스쿠아리리움 화합물을 제공한다: 상기 식에서, R 1 및 R 2 는 동일하거나 상이하며, 임의로 치환기를 갖는 알킬기, 임의로 치환기를 갖는 아르알킬기, 임의로 치환기를 갖는 아릴기 또는 임의로 치환기를 갖는 헤테로사이클릭기를 나타내며; Q 는 배위능을 가진 금속원자를 나타내고; q 는 2 또는 3을 나타내며; A 는 임의로 치환기를 갖는 아릴기, 임의로 치환기를 갖는 헤테로사이클릭기, 또는 Y=CH-(여기서, Y는 임의로 치환기를 갖는 아릴기 또는 임의로 치환기를 갖는 헤테로사이클릭기를 나타낸다)를 나타낸다.

Resin composition for optical recording medium

Ultraviolet curable composition for light transmission layer and optical disk

Optical information medium and method for fabricating same

광 정보매체는, 투광성 기판상에 기록부분을 보호하는 보호층을 갖추며, 레이저광에 의하여 광학적 판독이 가능한 정보를 기록할 수 있다. 상기 투광성 기판의 재생광이 입사하는 측 이면에 수성의 인쇄용 잉크가 정착 가능한 친수성 수지막이 형성되어 있다. 이 친수성 수지막의 표면에 일정한 문자나 도안을 용이하고도 양호하게 형성할 수가 있다. 예로서, 그 문자나 도안은 잉크제트프린터를 사용하여 인쇄가 가능하다. The optical information carrier has a protective layer that protects the recording portion on the light transmissive substrate, and can record information that can be optically read by a laser beam. A hydrophilic resin film capable of fixing an aqueous printing ink is formed on a rear surface of the light-transmitting substrate on which the regenerated light is incident. On the surface of this hydrophilic resin film, a constant character and a design can be formed easily and satisfactorily. By way of example, the text or pattern can be printed using an ink jet printer.

Laminate structure and production method thereof

합금기재상에, 스파터링에 의해 형성된 탄화규소질 피복층을 가지며, 상기 탄화규소질 피복층의 광투과율이 70%이상인 것을 특징으로 하는 적층구조체이다. 합금기재가 자성합금 또는 상변화합금인 태양, 탄화규소질 피복층의 표면에 존재하는 불순물의 비율이 1.0×10 12 atoms/cm 2 이하인 태양, 탄화규소질 피복층의 두께가 10∼100nm인 태양 등이 바람직하다. 이러한 적층구조체는, 내산화성, 내염소성, 내습성, 고굴절율, 고광투과율 등이 뛰어난 탄화규소질 피복층을 가지므로, 특히 CD-RW, DVD-RAM등의 광디스크의 기록매체에 바람직하다. A laminated structure having a silicon carbide coating layer formed by spattering on an alloy base material, wherein the light transmittance of the silicon carbide coating layer is 70% or more. Suns having alloy bases of magnetic alloys or phase change alloys, suns having an impurity ratio of 1.0 × 10 12 atoms / cm 2 or less on the surface of the silicon carbide coating layer, and suns having a thickness of 10-100 nm of the silicon carbide coating layer; desirable. Such a laminated structure has a silicon carbide coating layer having excellent oxidation resistance, chlorine resistance, moisture resistance, high refractive index, high light transmittance, and the like, and therefore, it is particularly preferable for recording media of optical discs such as CD-RW and DVD-RAM.

Optical recording medium

본 발명은 저피부 자극성의 보호막 형성용 조성물로 형성되고, 또한 에러의 발생이 적은 보호막을 갖는 광기록 매체를 제공한다. The present invention provides an optical recording medium which is formed of a composition for forming a low skin irritant protective film and which has a protective film with less occurrence of errors. 기판, 기판상에 형성된 기록막, 및 기록막상에 보호막 형성용 조성물을 도포하여 경화시킴으로써 형성된 보호막으로 이루어지는 광기록 매체에 있어서, 보호막 형성용 조성물은 60∼85 중량% 의 트리메틸올프로판 트리아크릴레이트의 에틸렌 옥사이드 변성물과, 트리메틸올프로판 트리아크릴레이트의 에틸렌 옥사이드 변성물 100 중량부에 대하여 25∼65 중량부가 되는 양의 트리프로필렌 글리콜 디아크릴레이트로 구성된다. An optical recording medium comprising a substrate, a recording film formed on a substrate, and a protective film formed by applying and curing a protective film-forming composition on a recording film, wherein the protective film-forming composition comprises 60 to 85% by weight of trimethylolpropane triacrylate. It consists of an ethylene oxide modified substance and the tripropylene glycol diacrylate of the amount used as 25-65 weight part with respect to 100 weight part of ethylene oxide modified substances of trimethylolpropane triacrylate.

Optical information medium

Optical recording medium

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Multilayer optical disk

(57)【要約】 【課題】 第１および第２の情報層の積層による多層デ ィスクにおいて、より高品位な再生がなされるようにす る。 【解決手段】 第１の情報層４ｆと、第２の情報層４ｓ とが重ね合わされて１枚の光ディスクとされた構成を有 するものである。そして、その第１の情報層は、７７０ ｎｍ〜８３０ｎｍの波長範囲（第１の波長）の第１の再 生光に対する反射率が９０％以上の金属反射膜を有し、 第２の情報層は、上記第１の再生光に対する屈折率ｎｓ 1 と、６１５ｎｍ〜６５５ｎｍの波長範囲（第２の波 長）の第２の再生光に対する屈折率ｎｓ 2 のそれぞれの 実数部での比ｎｓ 2 ／ｎｓ 1 が、１．０５以上である半 透明反射膜を有する構成とする。