Patent application number | Description | Published |
20080285417 | Optical Information Recording Medium and Method for Recording to the Same - An optical information recording medium with favorable recording/reproducing characteristics and corrosion resistance is offered. To this end, the optical information recording medium of the present invention comprises in this sequence at least substrate | 11-20-2008 |
20090059758 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - To provide an optical information recording medium having an information layer of excellent transmittance and signal intensity, an optical information recording medium | 03-05-2009 |
20090130365 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME - An information recording medium ensuring high recording and erase function and excellent archival characteristic at a high linear velocity and over a wide range of linear velocities is provided. Such a medium is obtained by constructing a recording layer which has a composition that can generate phase change as a whole, of a first through an M-th constituent layers (wherein M is an integer of 2 or greater) which are stacked in a thickness direction, such that elemental compositions of contiguous an m-th constituent layer and a (m+1)th constituent layer are different from each other (wherein m is an integer and satisfies 1≦m≦M) assuming that the constituent layer located at an m-th position from a laser light incident side is the m-th constituent layer. In this information recording medium, at least one m-th constituent layer constituting the recording layer preferably includes at least one element selected from Te, Bi, Sb, Ge, In, Ga, Al, Sn, Pb, Se and Si. | 05-21-2009 |
20090239022 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCTION THEREOF - The information recording medium of the present invention is provided with a substrate and an information layer including a recording layer. Rerecording and reproducing of information are performed by irradiating the information layer with a laser beam. The recording layer contains, as its main component, a material composed of Te, O, and M, where M denotes at least one element selected from Ru, Rh, Pd, Ag, Re, Os, Ir, Pt, and Au. In the material, the content of Te atom is 1 to 19 atom %, the content of O atom is 20 to 70 atom % (preferably 40 to 70 atom %), the content of M atom is 11 to 79 atom % (preferably 11 to 59 atom %, and more preferably more than 35 atom %). The material is, for example, is indicated as the region enclosed by A, B, C, and D, preferably by C, D, E, and F, and more preferably by E, F, H, and G, in the composition diagram of a ternary material of Te—O—Pd shown in FIG. | 09-24-2009 |
20090258178 | INFORMATION RECORDING MEDIUM, ITS MANUFACTURING METHOD, AND SPUTTERING TARGET FOR FORMING INFORMATION RECORDING MEDIUM - A write-once information recording medium having a high recording sensitivity and reliability with respect to long-term storage is provided. The information recording medium has a recording layer on a substrate, to which information can be recorded and from which information can be reproduced by irradiating the recording layer with laser light or applying electrical energy to the recording layer. The recording layer contains, as its primary components, TeO | 10-15-2009 |
20090269539 | Information Recording Medium and Method for Manufacturing Same - The present invention provides an information recording medium with high reliability and excellent repeated rewriting performance even when no interface layer is formed and a method for manufacturing the same. Accordingly, the information recording medium for carrying out recording and/or reproducing by light irradiation or electric energy application has a material layer containing at least one element selected from a group GM consisting of Sn and Ga, at least one element selected from a group GL consisting of Ta and Y, and oxygen. | 10-29-2009 |
20090286037 | INFORMATION RECORDING MEDIUM, TARGET AND METHOD FOR MANUFACTURING OF INFORMATION RECORDING MEDIUM USING THE SAME - An information recording medium of the present invention includes a recording layer whose phase changes by irradiation with a laser beam or application of current. The recording layer contains, as its main component, a composite composed of Ge and Sb that are essential components, and Te that is an optional component. The composite has a composition within a region enclosed by: point (a) (35, 65, 0), point (b) (36.9, 60, 3.1), point (c) (3.2, 60, 36.8), and point (d) (5, 95, 0) in terms of a coordinate (Ge, Sb, Te)=(x, y, z) on the triangular coordinate shown in FIG. | 11-19-2009 |
20090317581 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium having the same recording volume as that of DVD-ROM is obtained which shows excellent characteristics at recording linear velocities within a range of twice linear velocity of DVD (about 8.2 m/s) to five times liner velocity of DVD (about 20.5 m/s) and excellent archival stability, by a construction including a transparent substrate, a recording layer which is formed on the substrate directly or with another layer interposed therebetween and can change in phase reversibly by a laser beam irradiation, wherein the composition of the recording layer is within a region bounded by composition points A(41.2, 7.4, 51.4), B(39.8, 10.5, 49.7), C(28.5, 21.7, 9.8), and D(30.6, 15.8, 53.6) in a triangular coordinate graph represented with a coordinate of (Ge, Sb—Bi, Te) and a Bi content in the recording layer is 4 atom % and more and less than 13 atom %. | 12-24-2009 |
20090323495 | OPTICAL INFORMATION RECORDING MEDIUM, RECORDING/REPRODUCING METHOD THEREOF AND RECORDING/REPRODUCING APPARATUS - An optical information recording medium, recording/reproducing method thereof, and recording/reproducing apparatus with superior signal quality for high-density recording that has high storage reliability is provided. The optical information recording medium of the present invention has at least one information layer having a recording layer and a dielectric layer in order on a transparent substrate. The dielectric layer is comprised of greater than or equal to 50 molecule percent and less than or equal to 98 molecule percent of Zn—O, and greater than or equal to 2 molecule percent to less than or equal to 50 molecule percent of one or more compounds selected from the group consisting of Y—O, Ce—O, Nb—O, Ta—O, Cr—O and Mo—O. | 12-31-2009 |
20100046346 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - An optical information recording medium of the present invention includes at least a recording layer ( | 02-25-2010 |
20100047504 | INFORMATION RECORDING MEDIUM, ITS MANUFACTURING METHOD, AND SPUTTERING TARGET - An information recording medium is provided that has high recording sensitivity and high erasability, even when a recording layer thereof is as thin as about 3 nm. An information recording medium | 02-25-2010 |
20100097914 | INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - A low-cost information recording medium is provided by which good recording quality can be obtained even when high-density is made using a blue laser. The information recording medium on or from which information can be recorded and reproduced by irradiating the recording layer with laser beam is configured so that the content of O atoms is 20 atom % or more but 70 atom % or less, the content of M atoms is 1 atom % or more but 50 atom % or less and the content of Sb atoms is 10 atom % or more but 70 atom % or less when total number of the Sb atoms, the O atoms and the M atoms contained in the recording layer is 100 atom % and the recording layer does not contain Au, Pt and Pd. | 04-22-2010 |
20100151179 | Optical Information Recording Medium, Method Of Manufacturing The Same, And Sputtering Target - An optical information recording medium ( | 06-17-2010 |
20100178447 | INFORMATION RECORDING MEDIUM, METHOD FOR PRODUCING THE SAME, AND SPUTTERING TARGET - An information recording medium ( | 07-15-2010 |
20100220574 | INFORMATION RECORDING MEDIUM AND RECORDING/REPRODUCING METHOD FOR THE SAME - The information recording medium ( | 09-02-2010 |
20100254233 | INITIALIZATION METHOD FOR INFORMATION RECORDING MEDIUM, INITIALIZATION APPARATUS FOR INFORMATION RECORDING MEDIUM, AND INFORMATION RECORDING MEDIUM - According to the present invention, a recording film is partially initialized using a first light beam (A) having a wavelength for initialization, focus adjustment is performed using a second light beam (B) having a wavelength corresponding to a wavelength for recording and reproducing information on and from an information recording medium, and then the recording film is initialized using the first light beam (A), thereby it is possible to securely initialize recording films of all information layers of a multilayer information recording medium. | 10-07-2010 |
20100260035 | INFORMATION RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF - An information recording medium ( | 10-14-2010 |
20100265811 | INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING THE SAME, AND RECORDING/REPRODUCING APPARATUS - In an information recording medium including a substrate and an information layer having a recording layer, on and from which information is recorded and reproduced by laser beam application, the recording layer is made from a Te—O-M | 10-21-2010 |
20100279053 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME, AND SPUTTERING TARGET - An information recording medium ( | 11-04-2010 |
20110020582 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME - An information recording medium ensuring high recording and erase function and excellent archival characteristic at a high linear velocity and over a wide range of linear velocities is provided. Such a medium is obtained by constructing a recording layer which has a composition that can generate phase change as a whole, of a first through an M-th constituent layers (wherein M is an integer of 2 or greater) which are stacked in a thickness direction, such that elemental compositions of contiguous an m-th constituent layer and a (m+1)th constituent layer are different from each other (wherein m is an integer and satisfies 1≦m≦M) assuming that the constituent layer located at an m-th position from a laser light incident side is the m-th constituent layer. In this information recording medium, at least one m-th constituent layer constituting the recording layer preferably includes at least one element selected from Te, Bi, Sb, Ge, In, Ga, Al, Sn, Pb, Se and Si. | 01-27-2011 |
20110058463 | OPTICAL INFORMATION RECORDING MEDIUM AND RECORDING/REPRODUCING METHOD THEREFOR - An optical information recording medium ( | 03-10-2011 |
20110079764 | INFORMATION RECORDING MEDIUM, MANUFACTURING METHOD THEREFOR, AND SPUTTERING TARGET - The information recording medium of the present invention includes a recording layer whose phase can be changed by application of electrical energy. The recording layer contains, as a main component, a material consisting of Ge, Te, and Sb. The material has a composition within a region defined by point (a) (35, 35, 30), point (b) (32.5, 27.5, 40), point (c) (25, 25, 50), and point (d) (27.5, 32.5, 40) and including lines from point (a) to point (b), from point (b) to point (c), from point (c) to point (d), and from point (d) to point (a), respectively, when coordinates (Ge, Te, Sb)=(x, y, z) are plotted on a triangular coordinate system shown in FIG. | 04-07-2011 |
20110123756 | INFORMATION RECORDING MEDIUM - An information recording medium ( | 05-26-2011 |
20110151277 | INFORMATION RECORDING MEDIUM - An information recording medium ( | 06-23-2011 |
20110177280 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME - The information recording medium ( | 07-21-2011 |
20120113772 | INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS, OPTICAL INFORMATION RECORDING AND REPRODUCING METHOD AND MANUFACTURING METHOD OF INFORMATION RECORDING MEDIUM - To provide an information recording medium which is capable of reducing damage to a recording layer while improving environmental resistance of the recording layer and which enables information to be recorded or reproduced at a high density and a high sensitivity, an optical information recording and reproducing apparatus, an optical information recording and reproducing method, and a manufacturing method of an information recording medium. An information recording medium ( | 05-10-2012 |
20120207981 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME - The information recording medium | 08-16-2012 |
20130071600 | INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - An optical information recording medium including three or more information layers, wherein at least one information layer provided on the light incident side is an information layer which enables information to be overwritten and includes a recording film, a transmittance adjusting film of a dielectric containing Bi, Ti and O, and an isolation film in this order from a light incident side; and the isolation film is provided between and adjacent to the transmittance adjusting film and an intermediate separation layer which separate the information layer from another information layer on the side opposite to the light incident side; and the isolation film has an optical constant at a wavelength of 405 nm such that a refractive index is 1.8 or less and an extinction coefficient is 0.05 or less. This information recording medium prevents the repeated overwriting characteristics in a sever environment from being deteriorated. | 03-21-2013 |
20130071653 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME - An information recording medium including three or more information layers, wherein: at least one information layer includes a recording layer and a nucleation layer; the recording layer contains a material that is represented by formula (1) [(Ge | 03-21-2013 |
20140160914 | INFORMATION RECORDING MEDIUM, INFORMATION DEVICE, AND METHOD FOR PRODUCING INFORMATION RECORDING MEDIUM - An information device is an information device that records information on or reproduces information from an information recording medium ( | 06-12-2014 |