Optisches Aufzeichnungsmedium und optisches Aufzeichnungs/Wiedergabegerät

Informationsträger und Anlage zur Schichtherstellung

Optischer Informationsaufzeichnungsträger

APPARATUR MIT OPTISCHEM GEDAECHTNIS UND VERFAHREN ZU DEREN HERSTELLUNG.

Optisches Aufzeichnungsmedium

OPTISCHER DATENTRÄGER UND VERFAHREN ZUR HERSTELLUNG EINES OPTISCHEN DATENTRÄGERS

IMPROVEMENTS RELATING TO OPTICAL DATA STORAGE DISKS

OPTICAL INFORMATION RECORDING MEDIUM

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

PROTECTIVE FILM FOR AND IT ABSTENTION OPTICAL DISK

OPTICAL RECORDING MEDIUM WITH METAL REFLECTION LAYER FOR UNIQUE DESCRIBING

INFORMATION RECORDING MEDIA

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 RECORDING MEDIUM RECORDING METHOD AND OPTICAL RECORDING MEDIUM

MANUFACTURING AN OPTICALLY READABLE INFORMATION DISK

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.

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 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.

DIELECTRIC RECORDING MEDIUM

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.

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

Methods for application of tags onto optical media articles

Optical recording medium

SUPPORT Of RECORDING AND DEVICE Of ENREGISTREMENT/DE REPRODUCTION

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

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.

COATING SYSTEM FOR PIRACY-PROTECTED OPTICAL MEDIUM

A piracy protection digital recording medium comprising a polymeric layer incorporating an optical state change material in conjunction with a cationic photoinitiator ...

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 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.

Information medium having printable layer

An information medium comprising a printable layer that comprises at least an undercoat layer and a colorant-receiving layer, wherein the colorant-receiving layer comprises at least fine particles, a binder and a cross-linking agent; and the undercoat layer has a thickness of 15 μm or more and an information medium comprising a printable layer that comprises at least an undercoat layer and a colorant-receiving layer, wherein the undercoat layer comprises at least a smoothing layer that controls glossiness of the printable layer and a chromaticity control layer that controls chromaticity of the printable layer.

Optical information recording medium

An optical information recording medium includes a transparent substrate on which a recording layer, a reflection layer, a hydrophobic protective layer, a hydrophobic intermediate layer, and an ink receiving layer are successively overlaid.

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.

Method of manufacturing optical information recording medium

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Information recording disc having an anti-reflection layer and information recording/reproducing apparatus

An anti-reflection coating layer is formed on the surface portion of a recording medium. This enables to obtain a margin for the air gap thickness change when recording/reproducing an information signal using the "near-field technique" as well as minimize a data loss caused by a collision. Furthermore, the present invention provides a film configuration which can easily be produced.

Optical recording media and a method for recording on the optical recording media

An optical recording medium having each of a land and a groove and comprises at least a recording layer, dielectric layers and reflection layer. Recording and erasing of data can be carried out on both land and groove by a phase change between amorphous and crystalline states. The mirror portion may have reflectance characteristics selected from at least one of a reflectance of 15% to 35%, when in a crystalline state, and 10% or less, when in an amorphous state. Alternatively, additionally, the depth of the groove may be such as form an optical path length equal to 1/7 to 1/5 of the wavelength of the reproducing light and the photo-absorptance of the recording layer in the amorphous phase and the photo-absorptance in the crystalline phase may satisfy the following formula, Aa - Ac ¿ 10 ¿¿¿where Aa is the photo-absorptance (%) of the recording layer in the amorphous phase and Ac is the photo-absorptance (%) of the recording layer in the crystalline phase. In an optical recording method, ...

Optical storage medium including multiple data levels made of Co/Pt magneto-optical recording media

An optical data storage medium is disclosed. The medium includes multiple data storage levels and each storage level comprising a transparent dielectric seed layer and a partially transmissive recording layer having a multilayer structure including alternating layers of Co/Pt on to said seed layer. ...

Dielectric recording medium and a method of making a record

A multi-layer information recording medium (11) for storing large amounts of information in a prescribed pattern of microscopic pits (15), formed by focusing onto the medium a beam of radiation having a prescribed wavelength and having an intensity modulated by the information to be recorded. The record medium (11) includes a substrate (29) having a light-reflective surface (31) on its upper side, a light-absorptive dielectric layer (33) overlaying the substrate and having a thickness approximately equal to an odd integral multiple of one fourth the wavelength of the beam of radiation in the dielectric material, and a thin metallic layer (35) overlaying the dielectric layer and having a light-reflective surface (37) on its lower side. During recording of then formation, a substantial proportion of the intensity-modulated beam of radiation is transmitted through the metallic layer (35) to the dielectric layer (33) where it is confined, due to multiple internal reflections by the light-reflective ...

REPRODUCING METHOD OF OPTICAL INFORMATION RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a reproducing method of an optical information recording medium capable of securing high signal quality and performing stable reproduction. SOLUTION: The optical information recording medium comprises a temperature-sensitive layer made of CeO2 or ZnO and a reflection film formed in this order from a reproduction light incident side on a substrate on which information is recorded by ruggedness. The temperature-sensitive layer has the property of changing in refractive index with a temperature change at 442 nm wavelength and 408 nm wavelength when it is made of CeO2 and ZnO, respectively. The recorded information is reproduced using only a high temperature part of a reproduction light beam as an effective beam diameter by irradiating the optical information recording medium with the reproduction light beam having 442 nm wavelength and 408 nm wavelength when the temperature-sensitive layer is made of CeO2 and ZnO, respectively. COPYRIGHT: (C)2009,JPO&INPIT ...

PHOTOIRRADIATION METHOD AND OPTICAL INFORMATION RECORDING MEDIUM AND RECORDING METHOD AND REPRODUCING METHOD USING THIS MEDIUM

PURPOSE: To improve the recording density of the optical information recording medium and to allow the production of high-integrated LSI circuits, etc., by subjecting an object to exposing, recording and reproducing or printing, etc., with higher resolving power, high resolution and higher contrast than the resolving power, high resolution and higher contrast of the light spot or optical pattern to be cast. CONSTITUTION: A contrast increasing layer 3 which is increased in the transmittance to light for irradiation according to an increase in light intensity or exposure is provided in proximity to the object 1. The light is much absorbed by the layer 3 in the peripheral part of the intensity distribution 5 of the light spot 4 for irradiation and is absorbed little in the peripheral part of the intensity distribution 5. Then, the object 1 can be irradiated by the intensity distribution 6 narrower than the original intensity distribution 5. COPYRIGHT: (C)1993,JPO&Japio ...

Mit zwei verschiedenen Wiedergabesystemen kompatible optische Platte

Optical laser readable erasable and rewritable recording medium

Recording medium (3) derived from a phase-changing material (e.g. GeSnTe or InSbTe) is sandwiched between an upper (4) and lower (2) dielectric protection layers and built on a transparent substrate (1) (polycarbonate) formed with tracking lines (8) and grooves (9). Above this is a metal reflection layer (5). The width of the grooves (9) and lines (8) are from 0.1 ~mm upwards. The spots (7) indicating the digital information may be placed on the tracking line, in the groove, or both. These may be repeatedly changed from a crystalline to amorphous phase by specific laser beam energy to change their optical characteristics and therefore the information content. Eight application examples are given.

LASER-AUFZEICHNUNGSMATERIAL UND AUFZEICHNUNGSVERFAHREN

MEDIUM FUER OPTISCHE DATENAUFZEICHNUNG.

DIELECTRIC RECORDING MEDIUM AND A METHOD OF MAKING A RECORD

Optisches Aufzeichnungsmedium, Herstellungsprozess für dasselbe und optisches Aufzeichnungsverfahren für dasselbe

Optisches Aufzeichnungsmedium mit mehreren Informationsschichten mit verschiedenen Formen

DATA RECORDING MEDIUM

IMPROVEMENTS RELATING TO OPTICAL DATA STORAGE DISKS

INFORMATION RECORDING MEDIA

Optical record disc

A transparent disc 1 carries a reflecting crenellated information structure 2 which is bonded to a flat heat- conducting plate 6, for example an aluminium plate, to reduce the amount of local heating, with consequent degradation of the information structure 2, which may be caused by the playback beam. ...

OTPI MEDIUM WITH COPY PROTECTION AND PERTINENT PROCEDURE

WITH TWO DIFFERENT OUTPUT SYSTEMS COMPATIBLE ONE OPTICAL PLATE

HIGHLY SOLUBLE OPTICAL INFORMATION STORAGE MEDIUM

RECORDING MEDIUM FOR OPTICAL DATA AND AZOMETALLKOMPLEX FÄRBEMITTEL

OPTICAL PLATE AND STORAGE CONTAINER FOR OPTICAL PLATES

Optical data medium containing, in the information layer, a dye as a lightabsorbing compound and having a protective covering layer of predetermined thickness

LAMINATE STRUCTURE AND PRODUCTION METHOD THEREFOR

... ▓▓▓A laminate structure having a silicon carbide coating layer formed on an alloy ▓base material by sputtering, characterized in that a light transmittance of ▓the silicon carbide coating layer is at least 70%. A mode in which the alloy ▓base material is a magnetic alloy or phase change alloy, a mode in which ▓impurities on the surface of the silicon carbide coating layer accounts for up ▓to 1.0 x 1012 atoms/cm2, or a mode in which the coating layer is 10 to 100 nm ▓thick is preferable. This laminate layer, having the silicon carbide coating ▓layer excellent in oxidation resistance, chlorine resistance, moisture ▓resistance, refractive index, light transmittance, etc., is suitably used for ▓an optical disk recording medium such as CD-RW and DVD-RAM.▓ ...

DIELECTRIC RECORDING MEDIUM

A multi-layer information recording medium for storing large amounts of information in a prescribed pattern of microscopic pits, formed by focusing onto the medium a beam of radiation having a prescribed wavelength and having an intensity modulated by the information to be recorded. The record medium includes a substrate having a light-reflective surface on its upper side, a light-absorptive dielectric layer overlaying the substrata and having a thickness approximately equal to an odd integral multiple of one fourth the wavelength of the beam of radiation in the dielectric material, and a thin metallic layer overlaying the dielectric layer and having a light-reflective surface on its lower side. During recording of the information, a substantial proportion of the intensity-modulated beam of radiation is transmitted through the metallic layer to the dielectric layer where it is confined,due to multiple internal reflections by the light-reflective surfaces of the substrate and the metallic ...

OPTICAL MEMORY ELEMENT

An optical memory element is disclosed which comprises a substrate, a recording medium layer and an aluminum silicon nitride film laminated in sequence.

INFORMATION RECORDING MEDIUM

光记录媒体

... 一种通过非晶相和结晶相之间的相变化来进行信息的记录和抹除，在纹间表面和沟纹两方形成记录符号来进行记录的光记录媒体，其特征在于所述的记录媒体至少具有基板/第1电介质层/记录层/第2电介质层/光吸收层/反射层，其沟纹深度形成重放光波长的1/7以上1/5以下的光路长，并且记录层的非结晶部分和结晶部分的光吸收率由式Aa-Ac≤10％表示，其中Aa表示记录层的非结晶部分的光吸收率(％)，Ac表示记录层的结晶部分的光吸收率(％)。 ...

Photocurable transfer sheet, process for producing optical information recording medium using the same, and optical information recording medium

This invention provides a photocurable transfer sheet that is advantageous in the production of an optical information recording medium having a small thickness and a high capacity such as DVDs. The photocurable transfer sheet is such that a transfer sheet obtained by curing the photocurable transfer sheet has excellent adhesion to a reflective layer formed of a silver alloy or the like, the separation of a stamper is easy, and, accordingly, the shape of a concave/convex signal face such as pits can be provided with high accuracy. The photocurable transfer sheet comprises a photocurable transfer layer formed of a pressure deformable photocurable composition. The photocurable transfer sheet is characterized in that the photocurable composition comprises a polymer and a reactive diluent containing a photopolymerizable functional group and the reactive diluent comprises a compound containing at least one hydroxyl group and at least two groups of at least one kind selected from an acryloyl ...

SUPPORT Of RECORDING Of INFORMATION

OPTICAL RECORDING MEDIUM

COVER SHEET OF SUBSTRATE FOR SAVING DATA AND METHOD FOR PREPARATING THE SAME

CONJUNTO DE COBERTURA

Multilayer optical recording medium and optical recording method

Optical data medium and the testing method thereof

The present invention provides an optical data medium, which has a data recording layer on the surface of support substrate, and has an optical transmission layer on the data recording layer, and there is a laser beam irradiating through the optical transmission layer for recording or regeneration. The optical data medium can sufficiently ensure the protection function for the data recording layer of the optical transmission layer, the laser beam spot of the laser has small diameter, and the recoding and reproduction characteristics in high line speed, and the storage stability for the medium are improved. The solution is to have a data recording layer on the support substrate, and having an optical transmission layer on the data recording layer, and the laser beam penetrates the optical transmission layer for recording or reproducing; the optical transmission layer includes at least a resin layer, and the optical data medium has the tensile yield stress of 20 to 100 MPa and tensile strain ...

An optical data storage medium containing a triazacyanine dye as the light-absorbing compound in the information layer

An optical data storage medium containing a preferably transparent substrate which has optionally already been coated with one or more reflecting layers and onto or more reflecting layers, and optionally a protective layer or an additional substrate or a top layer are applied, which data storage medium can be recorded on and read using blue or red light, preferably laser light, wherein the information layer contains a light-absorbing compound and optionally a binder, characterized in that at least one triazacyanine dye is used as the light-absorbing compound.

GRAPHIC ARTS IMAGING CONSTRUCTIONS USING VAPOR-DEPOSITED LAYERS

A radiation-sensitive, imageable article comprises in sequence a substrate, a vapor-deposited colorant layer capable of providing an optical density of at least 0.3 to a 10 nm band of the electromagnetic spectrum between 280 and 900 nm, and a vapor-deposited graded metal/metal oxide or metal sulfide layer.

Optical record disc

An optical record disc is provided having a guide signal pit previously formed on a base plate for reading out a tracking information by a laser beam. A reflection film is coated on the base plate including the guide signal pit portion, and the record blank portion. A record layer of a removing type is formed over the reflection film. The record layer has a uniform thickness over the record layer and a uniform thickness, of substantially smaller dimension over the guide signal pit portion.

Information medium

The present invention relates to an information medium having a printable layer comprising at least a base layer and an ink-receiving layer adjacent to the base layer, characterized in that the surface roughness Ra at the surface of the base layer is 0.05 μm or greater, and the ink-receiving layer is formed by thermally hardening a composition comprising a cation-modified acrylic copolymer, a polyvinylacetal resin, an epoxy compound and hydrophobic fine particles, the thickness of the ink-receiving layer being 30 μm to 60 μm.

Method and materials for entitling compact discs

A method of marking an optical recording medium is provided. The method includes providing a curable material on a non-data surface of the optical recording medium. An energy source interacts with the curable material to form permanent text and/or images on the optical recording medium. The energy source includes a laser that produces energy at a frequency absorbed by the curable material. The method does not require specialized equipment and allows for increased amounts of information to be marked on the optical recording medium.

Optical recording medium, method of producing same, and optical recording and reproduction device

An optical recording medium for at least one of recording and reproduction of information by focusing of light from an optical system on a recording layer, comprising a substrate, a recording layer formed on the substrate, a first protective layer formed on the recording layer, and an antireflection multilayer film, designed to be positioned at a near field distance from the optical system, formed on the first protective layer for preventing reflection of the light at the surface of the first protective layer and having predetermined optical characteristics for moderating a change of a reproduced signal intensity along with fluctuation of a distance between the antireflection multilayer film and the optical system, a method of producing the medium, and an optical recording and reproduction device including the medium.

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.

Optical information recording medium

An optical information recording medium includes a transparent substrate on which a recording layer, a reflection layer, a hydrophobic protective layer, a hydrophobic intermediate layer, and an ink receiving layer are successively overlaid.

Solvent-free photocurable resin composition for protective film

A solvent-free photocurable resin composition is provided which can be applied to the surface of optical discs or the like to form a highly transparent protective film that can stably adhere to the surface and effectively protect the surface from scratches. The solvent-free photocurable resin composition contains a urethane(meth)acrylate oligomer, a trifunctional (meth)acrylic acid ester monomer, a photopolymerization initiator, and a dilution monomer. The dilution monomer contains a fluorine-based (meth)acrylic acid ester monomer having three or more fluorine atoms and a monofunctional or difunctional (meth)acrylic acid ester monomer in amounts of from 10 to 40 wt% and from 10 to 30 wt%, respectively.

MARKING AND AUTHENTICATING ARTICLES

Methods and apparatus for providing markings on objects, such as optical media (420) which do not interfer with the functionality of the object. The optical media (420) may have a portion, such as a central clamping area (422) which does not contain information. A mark (432) is transferred into this area through the use of a photomask. The mark (432) may be viewed in several ways including by placement over a fluorescent background (414) and irradiation with a low intensity ultraviolet light (415). This technique increases the contrast of the image.

Optical information recording medium

An optical information recording medium including a substrate having disposed thereon a recording layer to which a cover layer including a cover film provided with a pressure sensitive adhesive layer is adhered so that a surface of the recording layer is abutted on the pressure sensitive adhesive layer. The optical information recording medium is produced by a method comprising preparing the cover layer by forming a laminate by successively superimposing a first releasable film, the pressure sensitive adhesive layer, the cover film and a second releasable film and winding the laminate into a roll, wherein the first releasable film has a central surface average roughness (SRa) at a surface in contact with a surface of the pressure sensitive adhesive layer of 50 nm or less, a central surface average roughness (SRa) at an opposite surface of 100 nm or less, and a thickness of 20 µm or more. The invention also extends to a method for producing the optical information recording medium.

PHOTOCURABLE TRANSFER SHEET, PROCESS FOR PRODUCING OPTICAL INFORMATION RECORDING MEDIUM USING THE SAME, AND OPTICAL INFORMATION RECORDING MEDIUM

INFORMATION RECORDING MEDIUM

PURPOSE: To prevent the warpage and deformation by moisture absorption by providing a hygroscopic expansion layer having hygroscopic expandability on an information recording layer provided on a substrate. CONSTITUTION: The information recording layer 3 is formed via a moisture resistant protective layer 4 on the plastic substrate 1 consisting of a polycarbonate resin and the hygroscopic expansion layer 7 is formed via the moisture resistant protective layer 4 on the layer 3. This layer 7 consists of the polycarbonate resin which is the same material as the material of the substrate 1. The substrate 1 expands by absorbing moisture and the layer 7 expand as well when the magneto-optical disk constituted in such a manner is exposed to the high moisture. The expansion of the substrate 1 is eventually offset by the expansion of the layer 7 in this way and the warpage and deformation quantity over the entire part of the disk is decreased. The once absorbed moisture is removed at about the same ...

OPTICAL RECORDING MEDIUM

PURPOSE: To obtain an optical recording medium which has particularly improved sensitivity to writing in a heat mode and is not provided with a reflecting film by providing a recording layer consisting of a dye (compsn.) on the surface of a transparent resin base body and forming a surface layer by using a colloidal dispersion of silicone condensation product on the recording layer. CONSTITUTION: An optical recording layer incorporated therein with a cyanine, tetrahydrochorine or anthraquinone dye, more preferably a dye having an indole ring, thiazol ring, etc. which may be condensated with an arom. ring among the cyanine dyes and a quencher in order to improve light stability of the dye and to prevent deterioration in reproduction by preventing decoloration owing to read-out light in particular is provided on a transparent resin base body. A dispersion of colloidal particles having 30W100Å diameter and consisting of silicone condensation product such as hydrolyzed condensation product ...

СПОСОБ ПОЛУЧЕНИЯ СТОЙКОГО К ЦАРАПАНЬЮ ПОКРЫТИЯ ОПТИЧЕСКИХ НОСИТЕЛЕЙ ИНФОРМАЦИИ

Изобретение относится к покрытиям для оптическим носителям информации. Описана композиция для покрытия оптических прозрачных носителей информации, причем она способна к отверждению УФ-излучением и содержит: (А) от 1 до 60 мас.%, по меньшей мере, одного коллоидного оксида металла, (В) от 0,1 до 50 мас.%, по меньшей мере, одного продукта гидролиза силилакрилата, имеющего общую формулу (I): в которой а означает целое число от 0 до 2, b означает целое число от 1 до 3, и сумма а+b составляет от 1 до 3, R независимо означает неразветвленный или разветвленный алкильный остаток с 1-8 атомами углерода, циклоалкильный остаток с 3-8 атомами углерода, незамещенный или замещенный арильный остаток с 6-10 атомами углерода в арильной части, R1независимо означает водород, неразветвленный или разветвленный алкильный остаток с 1-8 атомами углерода, циклоалкильный остаток с 3-8 атомами углерода, незамещенный или замещенный арильный остаток с 6-10 атомами углерода в арильной части, R2 независимо означает водород ...

КОМПОЗИЦИИ, ВКЛЮЧАЮЩИЕ ПО МЕНЬШЕЙ МЕРЕ ОДИН ОКСОНОЛЬНЫЙ КРАСИТЕЛЬ И ПО МЕНЬШЕЙ МЕРЕ ОДИН КОМПЛЕКС МЕТАЛЛА

... 1. Композиция, включающая по меньшей мере один оксонольный краситель и по меньшей мере один комплекс металла следующей формулы или Me обозначает атом переходного металла подгруппы 7, 8, 9, 10, 11 или 12, предпочтительно 9, 10 или 11; D1 и D2 каждый независимо друг от друга обозначает карбоциклическое или гетероциклическое кольцо или кольцевую систему, которая может быть незамещенной или замещенной одной или несколькими группами R5 и R6; причем R5 и R6 обозначают атом галогена, такого как фтор, хлор или бром, аминогруппу, алкиламиногруппу, диалкиламиногруппу, нитрогруппу, цианогруппу, гидроксильную группу, незамещенный или замещенный алкильный радикал, незамещенный или замещенный гидроксиалкильный радикал, незамещенный или замещенный алкоксирадикал, алкильный радикал, который прерывается один или несколько раз группой -О- или -S- и который может быть незамещенным или замещенным, ацильный радикал, фенильную группу, сложноэфирную группу, такую как остаток эфира фосфоновой кислоты, фосфорной ...

INFORMATIONSAUFZEICHNUNGSTRAEGER UND VERFAHREN ZUM SCHREIBEN/LESEN VON INFORMATIONEN VON DIESEM TRAEGER.

Optisches Aufzeichnungsgerät

Informationsträger mit bedruckbarer Oberfläche

ZUSAMMENSETZUNG FÜR SCHUTZFILM FÜR OPTISCHE PLATTEN

OPTICAL INFORMATION RECORDING CARD USING PHASE SEPARATION OF POLYMER BLEND

OPTICALLY SELECTABLE ONE DATA DISK

Recording layer for optical information recording medium, optical information recording medium, and sputtering target

A recording layer for optical information recording medium excellent in recording property, an optical information recording medium including the recording layer and a sputtering target useful for formation of the recording layer are provided. A recording layer for an optical information recording medium on which recording is performed through irradiation with laser light, the recording layer including an oxide of a metal of which an absolute value of the standard free energy of oxide formation per 1 mol of oxygen is larger than that of Pd (hereinafter referred to metal X) and a Pd oxide, wherein the Pd oxide includes a Pd monoxide and a Pd dioxide, and wherein a ratio of the Pd atom to a total of the metal X atom and the Pd atom which are contained in the recording layer is 4 to 85 atomic %.

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 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 ...

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 , ...

OPTICAL RECORDING MEDIUM

An optical recording medium includes a reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer. The phase-change recording layer has an average composition represented by SbxInyMz, in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70≦x≦0.92, 0.05≦y≦0.20, and 0.03≦z≦0.10, respectively, provided that x+y+z=1, the first dielectric layer includes a zirconium oxide-containing composite material or tantalum oxide, and the second dielectric layer includes a chromium oxide-containing composite material or silicon nitride. 1. An optical recording medium comprisinga reflective layer, a first dielectric layer, a phase-change recording layer, and a second dielectric layer, whereinthe phase-change recording layer has an average composition represented by formula (1): SbxInyMz,in which M is at least one of Mo, Ge, Mn, and Al, and x, y, and z are values in the ranges 0.70≦x≦0.92, 0.05≦y≦0.20, and 0.03≦z≦0.10, respectively, provided that x+y+z=1,the first dielectric layer comprises a zirconium oxide-containing composite material or tantalum oxide, andthe second dielectric layer comprises a chromium oxide-containing composite material or silicon nitride.2. The optical recording medium according to claim 1 , wherein the first dielectric layer comprises a composite oxide comprising zirconium oxide and at least one of indium oxide and silicon oxide.3. The optical recording medium according to claim 1 , wherein the first dielectric layer comprises a composite oxide comprising zirconium oxide and indium oxide and has a zirconium oxide content of 20 mol % to 50 mol % and an indium oxide content of 10 mol % to 50 mol %.4. The optical recording medium according to claim 1 , wherein the second dielectric layer comprises a composite oxide comprising at least two of chromium oxide claim 1 , zirconium oxide claim 1 , and silicon oxide.5. The optical recording medium according to claim 1 , wherein the ...

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.

Systems and methods for atomic film data storage

The present disclosure provides systems and methods associated with data storage using atomic films, such as graphene, boron nitride, or silicene. A platter assembly may include at least one platter that has one or more substantially planar surfaces. One or more layers of a monolayer atomic film, such as graphene, may be positioned on a planar surface. Data may be stored on the atomic film using one or more vacancies, dopants, defects, and/or functionalized groups (presence or lack thereof) to represent one of a plurality of states in a multi-state data representation model, such as a binary, a ternary, or another base N data storage model. A read module may detect the vacancies, dopants, and/or functionalized groups (or a topographical feature resulting therefrom) to read the data stored on the atomic film.

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.

RECORDING LAYER, INFORMATION RECORDING MEDIUM, AND TARGET

The present invention relates to an information recording medium that has good enough recording characteristics even without containing Pd. The information recording medium has a recording layer including an oxide of Mn in which Mn atoms are partially or fully present as Mn with a valence of +4. 1. An information recording medium comprising: a recording layer comprising an oxide of Mn , wherein Mn atoms in the oxide of Mn are partially or fully present as Mn with a valence of +4.2. The information recording medium according to claim 1 , wherein the recording layer further comprises an oxide of a metal other than Mn claim 1 , and the metal is at least one selected from the group consisting of Sn claim 1 , Zn claim 1 , Bi claim 1 , Ge claim 1 , Co claim 1 , W claim 1 , Cu claim 1 , and Al.3. The information recording medium according to claim 1 , wherein the recording layer comprises a first recording layer and a second recording layer claim 1 , and the first and second recording layers have different material compositions.4. The information recording medium according to further comprising a dielectric layer provided on at least one surface of the recording layer.5. The information recording medium according to claim 4 , wherein the dielectric layer comprises at least one selected from the group consisting of an oxide claim 4 , a nitride claim 4 , a sulfide claim 4 , a carbide claim 4 , and a fluoride.6. The information recording medium according to claim 1 , wherein the recording layer comprises MnOas a main component.7. The information recording medium according to claim 1 , wherein the recording layer comprises claim 1 , as main components claim 1 , MnOand an oxide of at least one metal element selected from the group consisting of Sn claim 1 , Zn claim 1 , Bi claim 1 , Ge claim 1 , Co claim 1 , W claim 1 , Cu claim 1 , and Al.8. The information recording medium according to claim 1 , wherein the recording layer further comprises an oxide of Mg.9. The information ...

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 ...

MEDIA, SYSTEMS AND METHODS FOR OPTICAL DATA STORAGE

Provided are media, systems and methods for optical data storage. A nanocomposite material for use as an optical data recording medium comprises nanoparticles embedded in a host matrix, wherein the host matrix comprises a material having a high structural stability, and the nanoparticles comprise optical functional components having a first physical or chemical state and a property of permanent transition to a second physical or chemical state upon exposure to corresponding optical radiation, whereby information may be recorded in the first and second physical or chemical states of the optical functional components over an extended time period. 1. A nanocomposite material for use as an optical data recording medium , comprising nanoparticles embedded in a host matrix wherein: the host matrix comprises a material having a high structural stability; and the nanoparticles comprise optical functional components having a first physical or chemical state and a property of permanent transition to a second physical or chemical state upon exposure to corresponding optical radiation , whereby information may be recorded in the first and second physical or chemical states of the optical functional components over an extended time period.2. The nanocomposite material of wherein the host matrix comprises a material having Young's modulus in excess of 1 GPa.3. The nanocomposite material of wherein the host matrix comprises a material having Young's modulus in excess of 10 GPa.4. The nanocomposite material of wherein the host matrix comprises a material having Young's modulus in excess of 20 GPa.5. The nanocomposite material of wherein the host matrix comprises a hybrid composite including organic and inorganic components.6. The nanocomposite material of wherein the host matrix comprises an organic polymer and an inorganic material.7. The nanocomposite material of wherein the organic polymer is selected from poly-methyl-methacrylate (PMMA) or polycarbonate (PC) claim 6 , and the ...

KIT-OF-PARTS CONTAINING A SEALING LAYER AND A PHOTOPOLYMER

The invention relates to a kit-of-parts comprising at least one sealing layer C and a photopolymer B, a process for producing an at least partly interconnected layered setup formed of at least 2 layers, the use of the at least one sealing film C to protect the photopolymer B, the use of the kit-of-parts for the process referred to, a sealed holographic medium comprising the photopolymer and optical displays and security document comprising the sealed holographic medium. 115.-. (canceled)16. A kit-of-parts comprising at least one sealing layer C and an areal photopolymer B.17. A process for producing an at least partly interconnected setup formed of at least 2 layers comprisinga) an areal photopolymer B containing a volume hologram, and the photopolymer B containing a volume hologram comprises a crosslinked matrix;', 'the sealing layer C is less than 50 μm in thickness and has a viscosity of 2000 Pa s to 2 million Pa s, preferably 4000 Pa s to 1.6 million Pa s and comprises a physically drying resin C1, an acryloyl- or methacryloyl-functional reactive diluent C2 and a photoinitiator C3;', 'and the sealing layer C is laminated onto the photopolymer B and', 'thereafter cured with actinic radiation., 'wherein'}, 'b) at least one at least partly actinically cured sealing layer C,'}18. The kit-of-parts according to claim 16 , wherein the photopolymer B is in the form of a layer claim 16 , preferably on a preferably transparent thermoplastic substrate film A or on some other support.19. The kit-of-parts according to claim 16 , wherein the sealing layer C is present on a supporting film D.20. The process according to claim 17 , wherein a further sealing layer C is laminated onto the reverse side of the both-sidedly areal photopolymer B.21. The process according to claim 17 , wherein an at least partly interconnected setup formed of at least 3 layers comprising an areal photopolymer B containing a volume hologram claim 17 , at least one at least partly actinically cured ...

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

An optical recording medium which comprises a 0.3 to 2.0 mm-thick substrate made from a thermoplastic resin and having embossed pits or guide grooves, a reflection layer formed on the substrate and a 3 to 200 µm-thick transparent protective layer formed on the reflection layer and which reproduces recorded information based on a change in the intensity of reflected light by applying a light beam from the transparent protective layer side, wherein    the substrate is formed from a polycarbonate resin having a specific chemical structure and a thermoplastic resin having specific physical properties. According to the present invention, there is provided an optical recording medium for surface recording and reproduction having a simple structure. Particularly, there is provided an optical recording medium having high recording density.

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

Optical recording medium having two separate recording layers

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Optical information recording medium and reproducing apparatus with layer identification

In an optical information recording medium having at least two information layer, guide grooves for tracking or sample pits or information pits corresponding to information signals are formed on a surface of a first substrate. A first information layer formed by a thin film for reflecting a portion of a light beam made incident on the first substrate and permitting penetration of a portion of the light beam is formed on a surface of the first substrate. Guide grooves for tracking or information pits corresponding to information signals are formed on a surface of a second substrate. A second information layer having a reflectance higher than that of the first information layer is formed on a surface of the second substrate. Between the first information layer and the second information layer, there is formed a transparent separation layer for positioning the first information layer and the second information layer to be spaced a predetermined distance apart from each other.

Metal chelate compound and optical recording medium using the compound

Metal chelate compound and optical recording medium using the compound

an azo metal chelate compound of an azo compound of the formula (I) with a metal: 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, R 1 is an alkyl group which may be substituted, an aryl group which may be substituted, an alkenyl group which may be substituted, or a cycloalkyl group which may be substituted, Y is a hydrogen atom or a cation, and n is an integer of from 1 to 3.

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.

Optical information recording medium

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.

光学部品、光記録媒体及びその製造方法

【課題】光学部品や光記録媒体として、有機−無機ハイブリット材料等の光学材料層を用いる場合に、その乾燥による厚みムラの影響を解消する。 【解決手段】光記録媒体２０は、基板１０上に、有機−無機ハイブリット材料層１２を塗布、乾燥して設け、これを、有機珪素樹脂１６によって被い、更に該有機珪素樹脂１６に光透過性基板１８を積層することによって構成され、ハイブリット材料層１２と有機珪素樹脂１６との屈折率の差を小さくして、光学的に連続一体とすることにより、ハイブリット材料層１２の厚みムラの影響を解消する。 【選択図】図２

Optical information recording medium

An optical information recording medium which records at shorter laser wavelengths and has excellent light resistance and archival stability includes a supporting substrate and a recording layer coated on the substrate. The recording layer includes a metal chelated azo compound, the azo compound having the general formula (I): ##STR1## wherein X is NR 6 group, oxygen or sulphur, wherein R 6 is hydrogen or alkyl; Y is hydroxy, carboxy, or carbamoyl; each of R 1 -R 5 is independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, alkoxy, amino, halogen, nitro, cyano, trifluoromethyl, or carboxy, with the proviso that all of R 1 -R 5 are not simultaneously hydrogen; and the metal is a metal ion of Groups 3-12 of the Periodic Table.

Optical recording medium and recording method using the same

An optical recording medium has a substrate and a recording layer formed thereon, the recording layer containing at least one compound represented by formula (I): wherein M, R 1 to R 4 and X 1 to X 4 are as specified in the specification; and in addition, information can be recorded in the above-mentioned optical recording medium by applying a laser beam in a wavelength range of 630 to 720 nm thereto.

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.

Optical recording medium, and method and device using the same

An optical recording medium includes a substrate and at least a recording layer deposited on or above the substrate, and the recording layer contains at least one formazan-metal chelate compound containing a formazan compound and a metal component; at least one squarylium-metal chelate compound containing a squarylium compound and a metal component; and at least one diarylamine compound.

Optical recording medium, and method and device using the same

An optical recording medium includes a substrate and at least a recording layer deposited on or above the substrate, and the recording layer contains at least one formazan-metal chelate compound containing a formazan compound and a metal component; at least one squarylium-metal chelate compound containing a squarylium compound and a metal component; and at least one diarylamine compound.

二氢吲哚二氮杂次甲基阳离子用于光学数据记录的用途

本发明涉及二氢吲哚鎓二氮杂次甲基型阳离子与基于吡啶酮的偶氮金属配合物阴离子的染料盐在用于光学数据记录，优选用于使用波长至多450nm的激光器的光学数据记录的光学层中的用途。本发明进一步涉及一种能够采用蓝光激光器的辐射来记录及再现信息的一次写入多次读出(WORM)型光学数据记录介质，该介质于光学层中应用二氢吲哚鎓二氮杂次甲基型阳离子与基于吡啶酮的偶氮金属配合物阴离子的染料盐。

光记录介质及偶氮金属螯合物

本发明提供下述通式(1)表示的新型偶氮化合物和金属形成的金属螯合物、下述通式(2)表示的新型偶氮化合物以及在记录层中含有偶氮金属螯合物的光记录介质，该光记录介质能用波长300～900nm的激光进行良好的记录和再现。(1)式中，环A表示碳环式芳香族环、或杂环式芳香族环，构成环的原子中，彼此相邻的2个原子之间通过下述通式(a)表示的连接基团连接，形成至少一个酰亚胺环，R 1 、R 2 分别独立地表示氢原子、羟基等，Y表示具有活性氢的基团((a)式中X表示氢原子、羟基等)；(2)式中，环B表示烃环或杂环，环A及Y表示与上述相同的含义。

Cationic metal complexes as light-absorbing compounds in the information layer of optical data carriers

Es wurden neue kationische Metallkomplexe für optische Datenträger gefunden, wobei ein vorzugsweise transparentes gegebenenfalls schon mit einer oder mehreren Reflexionsschichten beschichtetes Substrat, enthaltend auf dessen Oberfläche eine mit Licht beschreibbare Informationsschicht, gegebenenfalls eine oder mehrere Reflexionsschichten und gegebenenfalls eine Schutzschicht, oder ein weiteres Substrat oder eine Abdeckschicht aufgebracht sind, die mit blauem oder rotem Licht, vorzugsweise Laserlicht, beschrieben und gelesen werden können, wobei die Informationsschicht eine lichtabsorbierende Verbindung und gegebenenfalls ein Bindemittel enthält, dadurch gekennzeichnet, dass als lichtabsorbierende Verbindung wenigstens besagter Metallkomplex verwendet wird. There have been found new cationic metal complexes for optical data carriers, wherein a preferably transparent substrate optionally coated with one or more reflective layers containing on its surface a light writable information layer, optionally one or more reflective layers and optionally a protective layer, or another substrate or a Covering layer are applied, which can be described and read with blue or red light, preferably laser light, wherein the information layer contains a light-absorbing compound and optionally a binder, characterized in that at least said metal complex is used as light-absorbing compound.

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

光信息记录介质

本发明提供C/N和再现耐久性都优秀且可无故障进行高密度记录的光记录介质。另外，提供照射短波长蓝色激光可进行信息的高密度且大容量记录和再现并具有感光度和反射率均优秀的记录特性的光信息记录介质。该光记录介质使用450nm以下的激光进行记录再现，在形成了轨道间距为200～400nm、槽深为50～150nm、槽半值宽度为90～200nm的凹槽的基板上，设置反射层、记录层等，且前述记录层含有在600～800nm和300～400nm分别具有极大吸收在1以上的有机物。该光信息记录介质，是基板上具有通过数值孔径(NA)0.7以上的透镜照射波长380～500nm的激光可记录信息的记录层的光信息记录介质，其特征在于，前述记录层是含有有机物的层，且前述基板的槽深是15～45nm，轨道间距为250～400nm，槽半值宽度为60～200nm，槽的倾斜角为40°～80°。

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。

光情報記録媒体および新規オキソノール化合物

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

방사상 틸트가 감소된 매체

본 발명은 55mm의 반경에서 약 1.15도 이하의 방사상 편차를 갖는 저장 매체(5)에 관한 것이다. 한가지 실시양태에서, 저장 매체(5)는 플라스틱 기판(108), 광학 층(114) 및 이들 사이에 배치된 데이터 저장 층(102)을 포함한다. 반사 층(11)은 데이터 저장 층(102) 및 기판(108) 사이에 배치되어 있다.

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.

Glass substrate for information recording medium and information recording medium employing same

화학 강화된 정보 기록 매체용 유리에서, 화학 강화에 의한 강화층 (13)을, 외주면 및 내주면에 존재시키는 것과 동시에, 정보 기록층이 형성되는 상면 (11) 및 하면 (12)에 실질적으로 존재시키지 않게 한다. 이것에 의해 고정밀도의 기판 연마 기술을 필요로 하는 일 없이, 평탄도 등의 형상 정밀도 및 강도를 향상시킬 수 있다. In the glass for chemically strengthened information recording medium, the reinforcement layer 13 by chemical strengthening is present on the outer circumferential surface and the inner circumferential surface, and is not substantially present on the upper surface 11 and the lower surface 12 on which the information recording layer is formed. Do not Thereby, shape precision, such as flatness, and intensity | strength can be improved, without requiring a highly accurate substrate grinding | polishing technique. 연마, 파괴인성치 Polishing, fracture toughness

光学的記録媒体

(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。

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。

Complex polymethine dyes and their use

This invention relates to an optical recording medium, comprising a substrate, a recording layer and a reflecting layer, where the recording layer comprises at least one dye of formula ##STR1## wherein A 1 and A 2 are each independently of the other C(CH 3 ) 2 , O, S, Se, or CH═CH which is unsubstituted or substituted by C 1 -C 5 alkyl or benzyl; M 1 and M 2 are each independently of the other Cr 3+ or Co 3+ ; L 1 and L 1 ' are each independently of the other a ligand of formula ##STR2## L 2 and L 2 ' are each independently of the other and independently of L 1 and L 1 ' a ligand of formula (II), (III) or ##STR3## m is a number from 0.2 to 1.0; and n, depending on m, is a number from 0.0 to 0.8, so that the sum of m and n equals 1.0; p and q are each independently of the other 0 or 1; and Q is CR 15 , CR 15 --CR 16 ═CR 17 or CR 15 --CR 16 ═CR 17 --CR 18 ═CR 19 . This invention also claims the dyes of formula (I) themselves as well as a process for optically recording, storing or reproducing information using a recording medium of this invention, recording or reproduction preferably being carried out at the wavelength range from 600 to 800 nm.

Erasable optical recording medium and method for writing, reading and/or erasing thereof

An erasable optical recording medium having a recording layer formed by a transparent and crosslinked polymer having Tg within a range of 50 DEG C.-300 DEG C. and exhibiting a rubbery state at a temperature higher than the Tg, in which is incorporated a dye which absorbs a light and converts it to heat; and a method for recording, reading and/or erasing by using said medium.

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

Optical tape

ABSTRACT OF THE DISCLOSURE Disclosed herein is an optical tape comprising: a substrate whose a center-line average roughness (RaB) on the surface of one side is not more than 0.005 µm and the number of coarse protuberances having a height of not less than 0.10 µm in the surface of that side is not more than 10 protuberances/cm2, and an optical recording layer formed on the surface whose the RaB is not more than 0.005 µm.

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.

Optical tape

Disclosed herein is an optical tape comprising: a substrate whose a center-line average roughness (Ra B ) on the surface of one side is not more than 0.005 μm and the number of coarse protuberances having a height of not less than 0.10 μm in the surface of that side is not more than 10 protuberances/cm 2 , and an optical recording layer formed on the surface whose the Ra B is not more than 0.005 μm.

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.

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

내용 없음. No content.

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 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 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。

Dye composition and optical recording medium

시아닌계 색소, 및 하기 식(I)의 아조계 화합물 및 금속을 함유하는 아조 금속 킬레이트 화합물을 함유함을 특징으로 하는 색소 배합 조성물; A cyanine-based dye and a dye-containing composition comprising an azo metal chelate compound containing an azo compound and a metal of the following formula (I); [상기 식중, [In the above meal, A는 이것이 결합된 탄소원자 및 질소원자 함게 복소환을 형성하는 잔기이고; A is a moiety that forms a heterocycle with the carbon and nitrogen atoms to which it is attached; B는 이것이 결합된 2개 탄소원자와 함께 방향환 또는 복소환을 형성하는 잔기이며; B is a moiety that forms an aromatic or heterocycle with the two carbon atoms to which it is attached; X는 활성수소를 갖는 기이다] X is a group having active hydrogen] 및 상기 색소 배합 조성물을 함유하는 기록층을 함유함을 특징으로 하는 광학 기록 매체. And a recording layer containing the dye mixture composition.

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

Amminium salt or diimmonium salt compounds and use thereof

본 발명은 예를들어 재생특성 및 보존안정성이 우수한 광기록매체 및 우수한 내광성과 내열성을 가진 적외선 스크리닝 필터에 사용하는데 적합한 아미늄 염 또는 디이모늄 염 화합물; 및 그의 용도에 관한 것이다. The present invention includes, for example, an aluminum salt or dimonium salt compound suitable for use in an optical recording medium having excellent reproducibility and storage stability and an infrared screening filter having excellent light resistance and heat resistance; And uses thereof. 아미늄 염 또는 디이모늄 염 화합물은 음이온과 함께 다음의 화학식 1로 표시된 아미늄 양이온 또는 다음의 화학식 2로 표시된 디이모늄 양이온을 포함한다: The aluminum salt or dimonium salt compound includes an anion cation represented by the following formula (1) or a dimonium cation represented by the following formula (2) with an anion: [화학식 1] [Formula 1] [화학식 2] [Formula 2] 상기 식에서, Where m은 1 또는 2의 정수이며; m is an integer of 1 or 2; 환 A에 결합된 두 개의 질소 원자(화학식 2에서는 4급 질소 원자)가 네 개의 B 페닐 그룹(임의로 치환되는 네 개의 아미노 그룹이 그의 4-위치에 각각 치환되어 있음)에 결합되며, 네 개의 아미노 그룹 중 적어도 하나는 치환체로서 시아노알킬 그룹을 가지고 있다. Two nitrogen atoms bonded to ring A (a quaternary nitrogen atom in formula 2) are bonded to four B phenyl groups (four amino groups optionally substituted in their respective 4-positions) and four amino At least one of the groups has a cyanoalkyl group as a substituent.

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

Optical recording medium

고속 고밀도 조건에서도 반복 내구성 또는 기록된 신호의 저장 안정성을 저하시키지 않고 최적의 다이렉트 오버라이트를 수행할 수 있는 상변화 광 기록 매체가 제공된다. 이를 위해, 상변화 광 기록 매체는 적어도 상변화 재료로 이루어진 기록층을 포함하며, 380㎚ 내지 420㎚ 범위의 파장의 레이저 광빔으로 기록 및/또는 재생된다. Ac가 상기 기록층의 결정 상태에서의 흡수율이고, Aa가 상기 기록층의 비결정 상태에서의 흡수율이라고 할 때, 비 Ac/Aa는 0.9 이상이고, 상변화 재료의 결정화를 촉진하는 결정화 촉진층은 기록층의 적어도 한 표면과 접촉한다. 흡수율 제어와 결정화 촉진을 조합하여 이용하면, 결정상에서의 물리적 성질과 비결정상에서의 물리적 성질 간의 차이를 확실하게 보상하여 최적의 다이렉트 오버라이트를 실현할 수 있다. There is provided a phase change optical recording medium capable of performing an optimal direct overwrite even under high speed and high density conditions without degrading the repeat durability or the storage stability of the recorded signal. To this end, the phase change optical recording medium comprises a recording layer made of at least phase change material, and is recorded and / or reproduced with a laser light beam having a wavelength in the range of 380 nm to 420 nm. When Ac is an absorption rate in the crystalline state of the recording layer, and Aa is an absorption rate in the amorphous state of the recording layer, the ratio Ac / Aa is 0.9 or more, and the crystallization promoting layer that promotes crystallization of the phase change material is recorded. Contact at least one surface of the layer. By using a combination of absorptivity control and crystallization promotion, it is possible to reliably compensate for the difference between the physical properties in the crystalline phase and the physical properties in the amorphous phase, thereby realizing an optimum direct overwrite. 상변화 광 기록 매체, 다이렉트 오버라이트, 결정화 촉진층, 흡수율, 광흡수 제어층 Phase change optical recording medium, direct overwrite, crystallization promotion layer, absorption rate, light absorption control layer

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 recoding and/or reproducing apparatus using swing arm actuator and Optical disc adopting thereof

스윙암 구동방식의 광기록재생장치 및 이에 적용되는 광디스크가 개시되어 있다. Disclosed are an optical recording / reproducing apparatus of a swing arm driving method and an optical disk applied thereto. 개시된 광디스크는, 정보신호의 기록/재생이 수행되는 정보기록면을 갖는 기판과; 정보기록면 상에 마련되며, 슬라이더와 마주하는 면이 평탄한 면으로 된 보호층;을 포함하여, 슬라이더의 부상 높이의 변화를 줄일 수 있도록 된 것을 특징으로 한다. The disclosed optical disc includes: a substrate having an information recording surface on which recording / reproducing of an information signal is performed; And a protective layer provided on the information recording surface, the surface facing the slider being a flat surface, so as to reduce a change in the height of lift of the slider. 또한, 개시된 광기록재생장치는 광헤드로서, 스윙암에 마련되며, 소정 파장의 광을 조사하는 광원과; 광로 상에 마련되어 입사광의 진행경로를 변환하는 광로변환수단과; 슬라이더에 탑재되며, 광원에서 조사되고 광로변환수단을 경유하여 입사된 광을 일차로 집속시키는 콜리메이팅렌즈와; 슬라이더에 탑재되며, 콜리메이팅렌즈에 의해 집속된 광을 재차집속시켜 광디스크에 광스폿이 맺히도록 하는 대물렌즈와; 광디스크에서 반사되고, 대물렌즈, 콜리메이팅렌즈 및 광로변환수단을 경유하여 입사된 광을 수광하여 정보신호 및 오차신호를 검출하는 광검출기;를 포함하여, 온도변화와 광원의 파장변화에 대하여 디포커스의 발생을 억제할 수 있도록 된 것을 특징으로 한다. In addition, the disclosed optical recording and reproducing apparatus is an optical head, comprising: a light source provided in a swing arm and irradiating light of a predetermined wavelength; Optical path converting means provided on the optical path and converting a traveling path of the incident light; A collimating lens mounted on the slider for focusing the light incident from the light source and incident through the optical path changing means; An objective lens mounted on the slider to focus the light focused by the collimating lens again so that an optical spot is formed on the optical disk; A photodetector reflected from the optical disc and receiving an incident light through an objective lens, a collimating lens, and an optical path converting means to detect an information signal and an error signal; and including a defocus on a temperature change and a wavelength change of a light source. It is characterized by being able to suppress the occurrence of.

Optical disc and manufacturing method thereof

Optical information recording medium

一种通过照射波长λ为450nm以下的激光束来进行信息记录与再现的光学信息记录媒体，其中：设有基片和在所述基片上形成的多个信息层，所述多个信息层中，与所述激光束的入射侧最近的第一信息层，从所述入射侧起依次含有记录层、反射层与透射率调整层，所述记录层，通过所述激光束的照射，在晶相和非晶相之间发生可逆性相变，将所述记录层为晶相时的所述第一信息层对所述波长λ的透射率设为Tc1，将所述记录层为非晶相时的所述第一信息层对所述波长λ的透射率设为Ta1时，所述Tc1和Ta1满足46％＜Tc1且46％＜Ta1；并且，所述Tc1和Ta1满足－5≤(Tc1－Ta1)≤5。

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

Optical information recording medium, manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus

在具有至少两个信息层的光学信息记录介质中，在第一基片(1)的一个表面上设有用于跟踪的导槽，或对应信息信号的采样槽或是信息槽。用薄膜构成的第一信息层(2)被设在第二基片(3)的一个表面上，用于反射入射到第一基片(1)上的一部分光束(7)，并且允许一部分光束(7)穿透。用于跟踪的导槽或对应信息信号的信息槽被设在第二基片(3)的一个表面上。在第二基片(3)的一个表面上设有第二信息层(4)，其反射率比第一信息层(2)高。在第一信息层(2)与第二信息层(4)之间设有透明的分隔层(5)，用于把第一信息层(2)和第二信息层(4)按照彼此分开的预定距离定位。