摘要:
The information recording medium of the present invention comprises at least one of the following oxide-based material layers: (I) an oxide-based material layer containing Zr, at least one element selected from the group GL1 consisting of La, Ga and In, and oxygen (O); (II) an oxide-based material layer containing M1 (where M1 is a mixture of Zr and Hf, or Hf), at least one element selected from the group GL2 consisting of La, Ce, Al, Ga, In, Mg and Y, and O; (III) an oxide-based material layer containing at least one element selected from the group GM2 consisting of Zr and Hf, at least one element selected from the group GL2, Si, and O; and (IV) an oxide-based material layer containing at least one element selected from the group GM2, at least one element selected from the group GL2, Cr, and O. This oxide-based material layer can be used, for example, as a dielectric layer.
摘要:
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.
摘要:
An information recording medium (1) of the present invention is an information recording medium allowing information to be recorded thereon by irradiation with a laser beam or by application of electrical energy. The information recording medium (1) includes a recording layer (15) capable of undergoing a phase change by the irradiation with the laser beam or by the application of the electrical energy. The recording layer (15) contains Sb, Te, Ge, and C, and a content of Te in the recording layer (15) is at least 8 atom % but not more than 25 atom %.
摘要:
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-MA-MB material consisting of Te, O, MA (wherein MA is at least one element selected from Au and Pd) and MB (wherein MB is at least one element selected from Ag, Cu and Ni) with a content of Te of 10 atom % to 50 atom %, the content of O of 40 atom % to 70 atom %, the content of MA of 3 atom % to 15 atom %, and the content of MB of 3 atom % to 15 atom %. This constitution provides a low-cost information recording medium which enables high-density recording and stable reproduction of recorded data for a long period of term.
摘要:
An information recording medium (9) comprises an information layer (9a) in which concavo-convex marks are formed, and a recording layer (13), contained within the information layer (9a), in which added marks are formed by optical properties changing through laser irradiation, and that contains Te, O, and M (where M is at least one element selected from a group consisting of Pd, Au, Pt, Ag, Cu, and Ni). In this information recording medium (9), a pre-laser irradiation reflectance Ra and a post laser irradiation reflectance Rb fulfill 1.0
摘要:
The information recording medium (100) of the present invention includes: an information layer (110) including a recording layer (115) capable of changing its phase containing at least one selected from Ge—Te, Sb—Te and Ge—Sb, and two or more dielectric layers (117, 118) disposed on the optical beam incident side with respect to the recording layer (115); and a transparent layer (102) disposed on the optical beam incident side with respect to the information layer (110) adjacent to the information layer, made of a transparent material with respect to the optical beam, and having a refractive index n of 1.75 or more. When two dielectric layers (117, 118) from the near side to the transparent layer (102) each are referred to as a dielectric layer b (118) and a dielectric layer a (117) from the optical beam incident side among the two or more dielectric layers (117, 118), a relationship of the refractive index n of the transparent layer 102, a refractive index nb of the dielectric layer b (118) and a refractive index na of the dielectric layer a satisfies nb 1 by irradiation with optical beam.
摘要:
The information recording medium of the present invention comprises at least one of the following oxide-based material layers: (I) an oxide-based material layer containing Zr, at least one element selected from the group GL1 consisting of La, Ga and In, and oxygen (O); (II) an oxide-based material layer containing M1 (where M1 is a mixture of Zr and Hf, or Ht), at least one element selected from the group GL2 consisting of La, Ce, Al, Ga, In, Mg and Y, and O; (III) an oxide-based material layer containing at least one element selected from the group GM2 consisting of Zr and Hf, at least one element selected from the group GL2, Si, and O; and (IV) an oxide-based material layer containing at least one element selected from the group GM2, at least one element selected from the group GL2, Cr, and O. This oxide-based material layer can be used, for example, as a dielectric layer.
摘要:
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. 1.
摘要:
Provided is a plastic eraser excellent in safety and environmental pollution resistance and, not detracting from the erasability thereof, further excellent in bleeding resistance and eraser dust gatherability. The eraser comprises a base resin such as a vinyl chloride resin and, as incorporated therein as a plasticizer, a liquid acrylic polymer having a glass transition point (Tg) of not higher than 0° C. The eraser may comprise the liquid acrylic polymer alone or as combined with one or more other plasticizers. Containing the liquid acrylic polymer as a plasticizer, the eraser has excellent bleeding resistance and excellent dust gatherability which could hardly be balanced.
摘要:
An optical information recording medium includes the first to the n-th information layers (where n is an integer not less than 3) arranged in this order from a laser beam incident side. Each information layer includes a recording layer containing Te, O and M, where M denotes at least one element selected from the group consisting of Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ru, Rh, Pd, Ag, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au and Bi. Concentrations of oxygen atoms contained in the first to the n-th recording layers, namely C(1) to C(n−1), satisfy the following relationships: C(1)≧C(2)≧ . . . ≧C(n−2)≧C(n−1), and C(1)≠C(n−1). When two information layers are included, the oxygen atom concentration of the first information layer is made larger than that of the second information layer.