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| Number | Title | Issue Date |
| 8133655 | Optical information recording medium, method and apparatus for recording and reproducing for the same In an optical information recording medium of the present invention, at least one information layer provided on a transparent substrate includes a protective layer and a write-once recording layer that are disposed in this order from the transparent substrate side. ... | 03/13/2012 |
| 8124315 | Optical recording medium An optical recording medium contains a recording layer being composed of a phase-change recording material where at least four elements, Ga, Sb, Sn and Ge are contained and the transfer linear velocity is 20 m/s to 30 m/s, and when the wavelength of a recording/repr... | 02/28/2012 |
| 7964333 | FRET-based two photon three dimensional optical data storage An optical data storage system and method with non-destructive multiple readout of 3-D data stored in multiple layers uses two-photon induced fluorescence modulation. The novel system uses the photochromic properties of the open and closed form of diarylethene in th... | 06/21/2011 |
| 7960093 | Storage medium, reproducing method, and recording method According to one embodiment, a write-once type information storage medium using a recording material which has a low to high characteristic that a light reflectivity in a recording mark increases with respect to a non-recording area and which has a recording charact... | 06/14/2011 |
| RE42222 | Reversible optival information-recording medium Phase-change type, reversible optical information recording medium, being possible for recording, reproducing, erasing, and rewriting of information, by use of a laser beam. This invention, consists of recording thin film of ternary elements, for example, containing... | 03/15/2011 |
| 7858290 | Information recording medium and method for manufacturing the same An information recording medium includes a substrate and an information layer formed on the substrate. The information layer includes a recording layer whose phase can be changed between a crystalline phase and an amorphous phase by irradiation with a laser beam or ... | 12/28/2010 |
| 7659049 | Phase-change recording material used for information recording medium and information recording medium employing it A phase-change recording material used for an information recording medium utilizing a crystalline state as a non-recorded state and an amorphous state as a recorded state, which has the composition of the following formula (1) as the main component: (Sb | 02/09/2010 |
| 7601481 | Multilayer phase-change information recording medium, and method for recording and reproducing using the same The object of the present invention is to provide a multilayer phase-change information recording medium comprises a substrate, and N layers of information layer (N represents an integral number of 2 or more), and each of the information layers comprises at least a ... | 10/13/2009 |
| 7566523 | Optical information-recording media and optical information-recording/reproduction apparatus Optical information-recording media comprise a first transparent substrate through which a laser beam enters, a first information-recording layer deposited on the first transparent substrate, a first reflection film formed on the first information-recording layer, a... | 07/28/2009 |
| 7556912 | Optical information recording medium, reproducting method using the same, and optical information processing device An optical information recording medium of the present invention includes a thin film section made up of one or more thin film, the thin film section being provided on a substrate. Thin films of the thin film section include a single optical multiple interference fi... | 07/07/2009 |
| 7507523 | Optical information recording medium, method of manufacturing the optical information recording medium, and method of and apparatus for recording/reproducing optical information An optical information recording medium is provided. This medium at least stores information that indicates a maximum recording linear velocity Vh. The medium comprises a substrate having a concentric circular guide groove. This guide grove has land portions and gro... | 03/24/2009 |
| 7482109 | Optical information recording medium A phase change optical recording medium includes at least a supporting substrate and a recording layer essentially consisting of AgInSbTe alloy compositions implementing recording and readout steps utilizing changes in reflectivity. The recording medium is character... | 01/27/2009 |
| 7455951 | Information recording medium and its manufacturing method A phase change recording medium comprising an as-deposited first recording layer configured to undergo a reversible phase change between an amorphous state and a crystalline state due to light irradiation and thereby change an optical characteristic. The as-deposite... | 11/25/2008 |
| 7442424 | Information storage medium having super resolution structure and apparatus for recording to and/or reproducing from the same A super-resolution information storage medium having recording marks or pits that are smaller than the resolution limit of a beam incident from an information recording and/or reproducing apparatus, and the information recording and/or reproducing apparatus. The inf... | 10/28/2008 |
| 7438965 | Phase-change information recording medium, manufacturing method for the same, sputtering target, method for using the phase-change information recording medium and optical recording apparatus It is an object of the present invention to provide a phase-change information recording medium, and the like, which is easy to perform initial crystallization, exhibits good recording sensitivity at a linear velocity as high as 10 double speeds or more with as much... | 10/21/2008 |
| 7439007 | Phase change information recording medium having multiple layers and recording and playback method for the medium A multilayer phase change information recording medium including plural information layers containing at least a first information layer and a last information layer, each of which includes a recording layer in which information is recorded utilizing a phase change ... | 10/21/2008 |
| 7431973 | Optical information recording medium, and manufacturing method, recording method, and recording apparatus thereof A recording medium has at least a recording layer on a transparent substrate. The recording layer has at least a first phase-changeable film and a second phase-changeable film in that order, starting on the side closest to the transparent substrate. The first phase-... | 10/07/2008 |
| 7427431 | Write once optical recording medium A write once optical recording medium includes a substrate on which an oxide film serving as an inorganic recording film is formed, the oxide film being made of a recording material of an oxide Ge1Ox (x is an atomic number ratio) of germanium (... | 09/23/2008 |
| 7422838 | Phase-change optical recording medium A phase-change optical recording medium is disclosed including a supporting substrate and the following contiguous layers formed on the supporting substrate in the order recited such as a first dielectric layer, a recording layer, a second dielectric layer, a metal/... | 09/09/2008 |
| 7407696 | Phase change materials for storage media Phase-change compounds, and optical storage recording media, for recording and/or storage of data, comprising such compounds, according to the formula XSbySz; wherein X is selected from the group consisting of K, Rb, Tl, Na, Li, Cs and mixtures... | 08/05/2008 |
| 7407697 | Information recording medium and method for manufacturing the same An information recording medium is provided that has high recording sensitivity for recording information and superior repeated rewriting performance. The information recording medium has at least a recording layer that is changeable between a crystalline phase and ... | 08/05/2008 |
| 7399511 | Optical recording medium An optical recording medium is provided, which are capable of recording and reproducing data with reliability even when blue or blue violet laser light is used as irradiation light. The optical recording medium includes a substrate, and a recording layer formed over... | 07/15/2008 |
| 7393574 | Information recording medium In an information recording medium, a Bi—Ge—Te material is adopted as a phase-change recording layer material. A C—Ta—O material is used for at least any one of first and second boundary layers which are in contact with a recording layer. ... | 07/01/2008 |
| 7390546 | Optical recording medium An optical recording medium includes a substrate 11 with a concave and convex shape for dividing a track area formed on its surface, an optical recording layer 12 having a compound consisting of at least tin (Sn), nitrogen (N) and oxygen (O) formed on ... | 06/24/2008 |
| 7390547 | Super resolution information storage medium A super resolution information storage medium includes: a substrate; a first super resolution layer which is formed over the substrate; a second super resolution layer which is formed over the first super resolution layer; and an insertion layer which is disposed be... | 06/24/2008 |
| 7384678 | Optical recording medium and process for producing the same, sputtering target, using process of optical recording medium, and optical recording apparatus To provide an optical recording medium and the like that is adapted to higher density and higher speed recording of 8 times or more than that of DVD (about 28 m/sec or more) and that exhibits superior repeating and reservation properties. An optical recording medium... | 06/10/2008 |
| 7384677 | Metal alloys for the reflective or semi-reflective layer of an optical storage medium A silver-based alloy thin film is provided for the highly reflective or the semi-reflective layer of optical discs. Alloy additions to silver include magnesium, gold, rhodium, ruthenium, osmium, platinum, palladium, copper, silicon, cadmium, tin, lithium, nickel, co... | 06/10/2008 |
| 7374805 | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium A silver-based alloy thin film is provided for the highly reflective or semi-reflective coating layer of optical discs. Elements that can be added to silver to produce useful silver alloys include zinc, aluminum, copper, manganese, germanium, yttrium, bismuth, scand... | 05/20/2008 |
| 7371448 | Phase-change recording media based on the Ga-Sb-Te system for ultra-high density optical recording This invention discloses a novel rewritable phase-change recording medium for optical data storage, which is based on the GaSbTe ternary alloy system. The designed compositions reside on the Sb7Te3—GaSb and Sb2Te3—GaSb... | 05/13/2008 |
| 7368222 | Optical data storage media with enhanced contrast Disclosed is an optical data storage medium with enhanced contrast. The optical data storage medium includes a substrate having oppositely facing first and second surfaces. A first metal/alloy layer is formed overlaying the first surface of the substrate. The first ... | 05/06/2008 |
| 7368223 | Multi-stack optical data storage medium and use of such a medium A multi-stack optical data storage medium for rewritable recording by a focused laser-light beam, the medium having a substrate with deposited on aside thereof: a first recording stack comprising a phase-change type recording layer... | 05/06/2008 |
| 7364644 | Silver selenide film stoichiometry and morphology control in sputter deposition A method of sputter depositing silver selenide and controlling the stoichiometry and nodular defect formations of a sputter deposited silver-selenide film. The method includes depositing silver-selenide using a sputter deposition process at a pressure of about 0.3 m... | 04/29/2008 |
| 7365408 | Structure for photolithographic applications using a multi-layer anti-reflection coating A bi-layer anti-reflective coating for use in photolithographic applications, and specifically, for use in ultraviolet photolithographic processes. The bi-layered anti-reflective coating is used to minimize pattern distortion due to reflections from neighboring feat... | 04/29/2008 |
| 7358031 | Optical information recording medium, optical information recording device and manufacturing method of optical information medium A multilayer optical information recording medium includes optical information recording layers, and dielectric multilayer reflecting layers provided under the optical information recording layers respectively. Each of the dielectric multilayer reflecting layers inc... | 04/15/2008 |
| 7357969 | Phase-change optical recording medium A phase-change optical recording medium has a first information layer including a phase-change optical recording film arranged in a position close to the light incident side, a second information layer including another phase-change optical recording film arranged i... | 04/15/2008 |
| 7359310 | Optical recording medium An optical recording medium includes a support substrate and two information recording layers, an information recording layer close to a light incidence plane through which a laser beam is projected including a first dielectric film, a second dielectric film and a r... | 04/15/2008 |
| 7360228 | Multi-stack optical data storage medium and use of such medium A multi-stack optical data storage medium, for recording using a focused radiation beam having a wavelength λ and entering through an entrance face of the medium, has a first substrate having a first guide groove formed therein, and a first recording stack includin... | 04/15/2008 |
| 7355951 | High density data recording/reproduction method utilizing electron emission and phase change media, and data recording system adopting the same, and media for the system A rapid data recording/reproducing method, a data recording system adopting the same, media for the system, and a tracking method, wherein the recording/reproducing method includes preparing media having a data recording layer in which a phase change is generated th... | 04/08/2008 |
| 7351516 | Optical information recording medium An optical information recording medium, especially a CD-RW medium, that can undergo direct overwriting at high speed is disclosed. The optical information recording medium includes a transparent substrate, at least a recording layer and a reflective layer on or abo... | 04/01/2008 |
| 7352680 | Optical recording medium having relation between reflection layer and pit length An optical information recording medium including a substrate, a light absorbing layer which is located overlying the substrate and in which marks are formed to store information and a light reflection layer located overlying the light absorbing layer including a cr... | 04/01/2008 |
