摘要:
A recording method whereby an inorganic resist made of an incomplete oxide of a transition metal is formed as a film onto a substrate and a latent image corresponding to pits is formed onto the inorganic resist by exposure. The exposure is performed by a laser beam whose intensity has been modulated by a pulse signal whose pulse height decreases in a rear portion in a length direction of the pit, thereby forming a format of a track pitch smaller than a recording beam diameter (track pitch/exposure beam diameter=0.333 to 0.833).
摘要:
The optical recording medium according to one embodiment of the present invention includes a substrate, a reflective layer located on the upper side of the substrate and reflecting an incident laser beam, and an information recording layer located on the reflective layer. The information recording layer includes a first recording layer containing a compound in the form of AXB1-X (0.8≦X≦0.9), wherein A is Ag and B is Sb and Te, and a second recording layer containing at least one element selected from the group consisting of Si, Sn, Sb and Ge. The laser beam is irradiated on the first recording layer prior to the second recording layer. Therefore, the optical recording medium of the present invention may provide high recording density and transmittance velocity suitable for BLU-RAY DISC system.
摘要:
An optical information recording and reproducing apparatus comprises an optical disk having a reflection layer, an optical information recording layer, a super resolution layer and a protection layer on the recording surface of a substrate, a laser emission control unit for emitting the laser light to record and reproduce the optical information and changing the pulse-like emission pattern, a pickup for radiating by focusing the laser light and receiving the reflected light, a spindle and a spindle motor for supporting and rotationally driving the optical disk, and a reproduction signal processing unit for arithmetically processing the received signal.
摘要:
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 15 on which information can be recorded by applying light or electrical energy has at least a recording layer 104 that undergoes phase change, while the recording layer 104 contains at least one element selected from among Zn, Si and C, and Sb in total proportion of 85 atomic % or more and has composition preferably represented by the formula Sb100-a1M1a (atomic %) (wherein M1 represents at least one element selected from among Zn, Si and C, and al is a proportion in term of atomic % that satisfies a relationship of 0
摘要:
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: (Sb1−xSnx)1−y−w−zGeyTewM1z formula (1) wherein each of x, y, z and w represents atomicity, x, z and w are numbers which satisfy 0.01≦x≦0.5, 0≦z≦0.3 and 0≦w≦0.1, respectively, and the element M1 is at least one element selected from the group consisting of In, Ga, Pt, Pd, Ag, rare earth elements, Se, N, O, C, Zn, Si, Al, Bi, Ta, W, Nb and V, and (I) when z=0 and w=0, y is a number which satisfies 0.1≦y≦0.3, (II) when 0≦z≦0.3 and w=0, y is a number which satisfies 0.05≦y≦0.3, and (III) when 0≦z≦0.3 and 0
摘要翻译:用于以结晶状态为非记录状态的信息记录介质和作为记录状态的非晶状态的相变记录材料,其具有以下式(1)的组成作为主要成分:(Sb1- x-yw-zGeyTewM1z式(1)其中x,y,z和w中的每一个表示原子性,x,z和w是满足0.01≤x≤0.5,0≤z≤0.3,0 元素M1为选自In,Ga,Pt,Pd,Ag,稀土元素,Se,N,O,C,Zn,Si等元素中的至少一种元素, Al,Bi,Ta,W,Nb和V,和(I)当z = 0且w = 0时,y是满足0.1 <= y <= 0.3的数,(II)当0≤z≤0.3 并且w = 0,y是满足0.05 <= y <= 0.3的数,和(III)当0 <= z <= 0.3且0
摘要:
An optical recording medium which is a multilayer optical recording medium including a plurality of recording layers and records or reproduces information by the irradiation of light having a wavelength of λ0. At least one recording layer out of a plurality of recording layers includes a variable absorption film. The variable absorption film contains a material in which an electron energy has a band structure, and the absorption end of an absorption spectrum moves toward a longer wavelength side with a rise in temperature when light is absorbed by transition between electron bands, has a first absorptance to light having a wavelength of λ0 when a film temperature is a first temperature (application environment temperature), and has a second absorptance higher than the first absorptance to light having a wavelength of λ0 when a film temperature is a second temperature higher than the first temperature.
摘要:
An optical recording medium containing a substrate and a recording layer over the substrate, wherein the recording layer primarily contains Bi and O, and further contains B and at least one element X selected from Ge, Li, Sn, Cu, Fe, Pd, Zn, Mg, Nd, Mn and Ni, and a sputtering target containing Bi, B and at least one element X selected from Ge, Li, Sn, Cu, Fe, Pd, Zn, Mg, Nd, Mn and Ni.
摘要:
An optical information recording medium that can simultaneously achieve both a high transmittance and high signal quality of an information layer, improve the reliability of long-term conservation, and reduce the manufacturing cost, and a manufacturing method thereof are provided. To achieve this, according to the present invention, in an optical information recording medium comprising at least one information layer on a substrate, at least one of the information layers has a recording layer and a dielectric layer, the recording layer contains Te, O, and M (M is one or a plurality of elements selected from Au, Pd, and Pt) as major components, the dielectric layer has a thermal conductivity of 0.01 W/K·cm or more, and the dielectric layer has an extinction coefficient of 0 through 1.0 inclusive.
摘要:
An information recording medium, 15 capable of recording information by irradiation of light or applying electrical energy, wherein at least one of first and second dielectric layers 102, 106, first interface layer and counter-incident side interface layer 103, 105 is formed from a Si—In—Zr/Hf—O-based material containing at least Si, In, M1 (M1 represents at least one element selected from among Zr and Hf) and oxygen (O), with Si content being 1 atomic % or more. This medium has high recording sensitivity when information is recorded thereon, high overwrite cycle-ability and high signal intensity.
摘要:
An optical recording disc includes a substrate, a third dielectric layer, a light absorption layer, a second dielectric layer, a decomposition reaction layer containing platinum oxide as a primary component, a first dielectric layer, and a light transmission layer. The decomposition reaction layer has a thickness of 2 nm to 20 nm, and the optical recording disc is constituted so that when it is irradiated with a laser beam from the side of the light transmission layer, the platinum oxide contained in the decomposition reaction layer as a primary component is decomposed into platinum and oxygen. A bubble pit is formed in the decomposition reaction layer by thus generated oxygen gas, and fine particles of the noble metal precipitate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer.