摘要:
An optical information recording medium (9) of the present invention is an optical information recording medium including: N information layers, where N is a natural number of 2 or more; and an intermediate layer for separating the N information layers optically from each other. With the N information layers being referred to as a first information layer (10) to an N-th information layer (7) sequentially from an optical beam incident side, a first information layer (10) corresponding to an L-th information layer included in the N information layers includes a recording layer (104) on which information can be recorded by irradiation with an optical beam, a reflective layer (108), and a transmittance adjusting layer (109) in this order from the optical beam incident side, where L is an at least one natural number that satisfies 1≦L≦N−1. The transmittance adjusting layer (109) contains tungsten (W) and oxygen (O).
摘要:
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.
摘要:
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.
摘要:
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, TeO2 and a material A, where the material A is a material that exhibits a eutectic reaction with TeO2.
摘要:
An information recording medium (300) of the present invention is an information recording medium on or from which information can be recorded or reproduced by irradiation with an optical beam (10), and includes a dielectric layer b, a recording layer (335), and a dielectric layer a in this order from an optical beam (10) incident side. The dielectric layer a and the dielectric layer b are layers disposed in contact with the recording layer (335), and an interface layer (334) corresponds to the dielectric layer a and an interface layer (336) corresponds to the dielectric layer b. The dielectric layer a contains Cr, O, and at least one element M selected from Al, Dy, Nb, Si, Ti and Y. The dielectric layer b contains Cr, O, and at least one element A selected from Zr and Hf.
摘要:
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. 1.
摘要:
A fat emulsion comprises a prostaglandin as an active ingredient, the fat emulsion comprising a phospholipid that comprises phosphatidylcholine (PC) and phosphatidylglycerol (PG) and has a ratio of PC to PG (PC:PG) of 85:15 to 99.7:0.3.
摘要:
An information recording medium with high recording sensitivity and superior repeat overwriting capability. The information recording medium (15) comprising at least recording layer (104) recording and/or reproducing information through irradiation with a laser beam or application of an electric current, and second dielectric layer (106) on substrate (14), wherein the second dielectric layer (106) comprises M1 (provided that M1 is at least one element selected from Sc, Y, La, Gd, Dy and Yb) and O.
摘要:
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.
摘要:
An information recording medium that is excellent in repeated-rewriting performance and is deteriorated less in crystallization sensitivity with time is provided, with respect to which high density recording can be carried out. A method of manufacturing the same also is provided. The information recording medium includes a substrate and a recording layer disposed above the substrate. The recording layer contains, as constituent elements, Ge, Sb, Te, Sn, and at least one element M selected from Ag, Al, Cr, Mn, and N and is transformed in phase reversibly between a crystal phase and an amorphous phase by an irradiation of an energy beam.