Class / Patent application number | Description | Number of patent applications / Date published |
428640800 | Coloring agent containing | 32 |
20080226860 | CYANINE DYES AND USE THEREOF - The present invention relates to a recording medium consisting of transparent substrate, recording layer, reflective layer, and protective layer, wherein the recording layer comprising at least one organic optical dye of structural formula (1): | 09-18-2008 |
20080317994 | Amino Antipyrine Based Azo Ligands and Their Metal Complexes for Use as Optical Recording Media - The present invention provides novel azo dye material based on antipyrine azo structure and metal complexes containing such azo compounds which are suitable for optical recording media. The dyes exert high light-fastnesses properties and excellent recording characteristics. | 12-25-2008 |
20090022933 | OPTICAL RECORDING MEDIUM - To provide an optical recording medium exhibiting favorable write/read characteristics in high-speed recording. In an optical recording medium including a reflective layer, a dye-containing recording layer, and a transparent resin layer on a substrate in this order, a barrier layer is disposed between the recording layer and the resin layer, where the barrier layer comprises a material having a bulk thermal conductivity M of 70 W/m·K or more at 300 K and has a thickness t less than 5 nm. | 01-22-2009 |
20090029092 | OPTICAL INFORMATION RECORDING MEDIUM - The invention provides an optical information recording medium having a recording layer capable of recording information by irradiating the recording layer with a laser beam of 440 nm or less. | 01-29-2009 |
20090029093 | OPTICAL INFORMATION RECORDING MEDIUM AND PROCESS FOR PRODUCING THE SAME - An optical information recording medium includes, in order, a first substrate; a recording layer capable of recording and reproducing information by irradiation with a first laser; a reflective layer; at least two visible information recording layers capable of recording visible information by irradiation with a second laser; and a second substrate, wherein said two visible information recording layers are not fused or mixed with each other by irradiation with said second laser light. | 01-29-2009 |
20090053455 | OPTICAL RECORDING MEDIUM, METAL COMPLEX COMPOUND AND ORGANIC DYE COMPOUND - Problem: To provide an optical recording medium having a recording layer improved in light stability that is capable of writing and reading of high-density optical information by a short-wavelength laser beam.
| 02-26-2009 |
20090081401 | OPTICAL RECORDING MEDIA - An optical recording medium which comprises a substrate and a recording layer provided on the substrate by using an organic dye compound having absorption maximum in a region with wavelengths longer than that of a writing light used, and which records information by allowing to irradiate the recording layer with the writing light to act on the organic dye compound to form a pit on the substrate. | 03-26-2009 |
20090092783 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium has a substrate, and an optical reflection layer, an optical recording layer containing an organic dye, an interlayer, and a cover layer formed in this order on the substrate. The interlayer contains a sputtered Nb | 04-09-2009 |
20090123686 | OPTICAL RECORDING MATERIAL AND CYANINE COMPOUND - An optical recording material comprising at least one kind of a cyanine compound represented by the following general formula (I): | 05-14-2009 |
20090130366 | Optical Information-Recording Medium and Information-Recording Method - There is provided an optical information-recording medium, comprising a recording layer capable of recording of information by irradiation of a laser beam having a wavelength of 440 nm or less on or above a substrate, the recording layer comprising a dye having two or more independent dye moieties in the molecule that are bound to each other in a manner other than by forming a conjugated bond to the dye moieties, and a method of recording information, comprising recording information by irradiating a laser beam having a wavelength of 440 nm or less on or above the optical information-recording medium according to the present invention described above. | 05-21-2009 |
20090130367 | CATIONIC COMPOUND, DYE COMPOUND AND METHOD OF USING THE SAME, AND OPTICAL INFORMATION RECORDING MEDIUM - The present invention relates to a cationic compound denoted by the general formula (I). In general formula (I), Ar | 05-21-2009 |
20090246443 | SIMULTANEOUS TWO-PHOTON ABSORPTION THREE-DIMENSIONAL OPTICAL RECORDING MEDIUM AND SIMULTANEOUS TWO-PHOTON THREE-DIMENSIONAL OPTICAL RECORDING METHOD - Provided is a simultaneous two-photon absorption three-dimensional optical recording medium for recording three-dimensionally record pits in the recording medium by simultaneous two-photon absorption and reading these recorded record pits, which has a multilayer structure prepared by laminating recording layers and intermediate layers, wherein information is recorded on the recording layers by simultaneous two-photon absorption, the intermediate layers do not change by a recording light, and sensitivities of a part of or all of the recording layers are different. | 10-01-2009 |
20090269543 | OPTICAL RECORDING MEDIUM - An optical recording medium comprises a laminate of at least two recording layers; each of the recording layers contains a metal complex dye and an organic dye in a predetermined concentration; when the recording layers comprise a first recording layer and a second recording layer in order from a light entrance side, the first recording layer contains 20 to 50 parts by weight of the metal complex dye where a total amount of the metal complex dye and the organic dye is 100 parts by weight, and the second recording layer contains 20 to 100 parts by weight of the metal complex dye where a total amount of the metal complex dye and the organic dye is 100 parts by weight. The optical recording medium is provided as one with a satisfactorily excellent initial error rate and a satisfactorily excellent error rate after a light resistance test, in each of the recording layers. | 10-29-2009 |
20100015381 | SILVER ALLOY REFLECTIVE FILM FOR OPTICAL INFORMATION STORAGE MEDIA, OPTICAL INFORMATION STORAGE MEDIUM, AND SPUTTERING TARGET FOR THE DEPOSITION OF SILVER ALLOY REFLECTIVE FILM FOR OPTICAL INFORMATION STORAGE MEDIA - A silver alloy reflective film for optical information storage media, which can maintain superior environmental resistance, such as high hygrothermal resistance and high light stability, over the long term even when the metal reflective film is in direct contact with a resin layer. An optical information storage medium includes the reflective film and a sputtering target deposits the reflective film. The silver alloy reflective film includes one or more specific elements selected from Pr, Ho, Yb, Sm, Er, Tm, and Tb, to suppress deterioration occurring when the silver alloy reflective film is in direct contact with a resin layer, where silver in the reflective film migrates and aggregates into the adjacent resin layer. | 01-21-2010 |
20100015382 | AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by general formula (1) and a metal: | 01-21-2010 |
20100035013 | OPTICAL RECORDING MEDIUM - An optical recording medium is provided which has excellent jitter characteristics and satisfactory recording/reproducing characteristics and is capable of extremely high-density recording. The optical recording medium | 02-11-2010 |
20100047508 | OPTICAL STORAGE DEVICE HAVING LIMITED-USE CONTENT AND METHOD FOR MAKING SAME - The invention relates generally to optical storage devices, such as DVDs and CDs, on which compositions containing dyes are disposed so as to facilitate limited or selective use of at least a portion of the content of the optical storage devices. The invention also relates to methods of making limited-use content optical storage devices. | 02-25-2010 |
20100098898 | AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by the general formula (1) and Zn | 04-22-2010 |
20100119764 | CYANINE DYE AND OPTICAL RECORDING MEDIUM - To provide an optical recording medium on which recording/retrieving of high density optical information is possible by a short wavelength light such as a blue laser. | 05-13-2010 |
20100173114 | OPTICAL RECORDING MEDIUM AND AZACYANINE DYE - An optical recording medium on which high-density recording and reading of optical information can be conducted by a short-wavelength light such as a blue laser beam is provided. | 07-08-2010 |
20100221482 | OPTICAL RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - To provide an optical recording medium including: a substrate having at least one of grooves and pits on a surface thereof; and a dye recording layer formed over the substrate, wherein the dye recording layer comprises a cyanine dye represented by the following General Formula (I), a squaric acid complex represented by the following General Formula (II), and an amine compound. | 09-02-2010 |
20100233415 | OPTICAL RECORDING MEDIUM AND AZO METAL CHELATE COMPOUND - The present invention is to provide an optical recording medium which is capable of performing good recording and reproducing by using a laser having a wavelength of 300 to 900 nm, a novel azo metal chelate compound, and a novel azo compound. Furthermore, the present invention is to provide an optical recording medium having an azo metal chelate compound in a recording layer. | 09-16-2010 |
20110129635 | COLORING MATTER FOR OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM - Disclosed is an optical information recording medium whose recording method is In-Groove recording, wherein such optical information recording medium offers good recording characteristics associated with high modulation degree and low jitter characteristics. This optical information recording medium includes: a disc-shaped substrate | 06-02-2011 |
20110177281 | OPTICAL INFORMATION RECORDING MEDIUM, METHOD OF RECORDING INFORMATION AND AZO METAL COMPLEX DYE - An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye being a complex of six azo dyes and seven transition metal ions. A further aspect of the present invention relates to a method of recording information onto the optical information recording medium and a novel azo metal complex dye. | 07-21-2011 |
20110244164 | DYE FOR OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM - Provided is an optical information recording medium employing an In-Groove recording system, and having a preferable recording characteristic with a high modulation degree and low jitter characteristics. The medium is comprised of a circular-disk shaped substrate | 10-06-2011 |
20140030467 | OPTICAL RECORDING MEDIUM - An optical recording medium is provided having a recording layer that absorbs light with a wavelength of 350 nm to 500 nm, the optical recording medium having good recording playback properties even when the ambient temperature changes, and allowing playback distortion to be controlled even when stored in a high temperature environment. A write-once type optical recording medium including: a substrate; a reflective layer that reflects light with a wavelength of 350 nm to 500 nm on the substrate; a recording layer that absorbs light with a wavelength of 350 nm to 500 nm; and a light transmission layer with a single-layer construction that transmits light with a wavelength of 350 nm to 500 nm, the light transmission layer having a modulus of elasticity at 75° C. that ranges from 50 MPa to less than 170 MPa. | 01-30-2014 |
20150318013 | MULTILAYER OPTICAL INFORMATION RECORDING DISK AND METHOD FOR MANUFACTURING SAME - A multilayer optical information recording disk comprising a plurality of recording layers and intermediate layers provided between the plurality of recording layers, and a method for manufacturing the same are provided. At least one of two intermediate layers disposed adjacent to respective sides of one recording layer is made of adhesive. Each of the recording layers includes a polymer binder and a dye dispersed in the polymer binder or includes a polymer to which a dye is bonded. Each recording layer is configured such that the dye absorbs a recording beam and generates heat which deforms the recording layer, causing an interface between the recording layer and the intermediate layer made of adhesive to have a protrusive shape protruding into the intermediate layer, thereby recording information thereat. The interface between the recording layer and the recording layer made of adhesive has a groove for track-following servo control. | 11-05-2015 |
428640900 | Thickness specified | 5 |
20090053456 | OPTICAL RECORDING MEDIUM - Provided is an optical recording medium that comprises two layers of a first information recording layer and a second information recording layer; the first information recording layer and the second information recording layer are laminated through an intermediate layer; wherein the two layers are recorded and regenerated by action of laser light irradiated from the side of the first information recording layer, the second information recording layer comprises a light reflective layer, a dye recording layer, and an inorganic protective layer on a substrate, and the substrate comprises wobble convex portions on its surface, the inorganic protective layer has a thickness of 3 nm to 40 nm, the dye recording layer comprises a cyanine compound expressed by General Formula (I) and a squarylium compound expressed by General Formula (II): | 02-26-2009 |
20090148650 | OPTICAL RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - Recording and reproducing characteristics and data saving reliability are secured in a write-once two-layer recording medium. | 06-11-2009 |
20090169798 | INFORMATON RECORDING MEDIUM AND MANUFACTURING METHOD OF THE SAME - Disc-shaped information recording medium comprising optical penetrating substrate having colored underlayer and ink receipt layer in this order on the principal surface of one side of the substrate, wherein the ink receipt layer contains inorganic fine particles, a binder, and a crosslinking agent, and wherein a pore diameter distribution of a gap of the ink receipt layer has a maximum peak in the range of 30 nm or more when the ink receipt layer is measured with a mercury porosimetry method. Since the shrinkage force functioning in the pores of the gaps of the ink receipt layer weakens, a disc-shaped information recording medium having a reduced occurrence of warp is provided. | 07-02-2009 |
20100047509 | ORGANIC DYE COMPOUND AND HIGH DENSITY OPTICAL RECORDING MEDIUM INCLUDING THE SAME - A recording layer including a novel organic dye compound (I) for a high density optical recording medium is provided. The organic dye compound (I) has the following general chemical structural formula: | 02-25-2010 |
20140023816 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium | 01-23-2014 |