Abstract:
A novel rewritable optical information recording medium having a recording layer consisting of an organic dye film and capable of reversibly recording/erasing information by laser beam irradiation. A novel rewritable optical information recording medium having as a recording film at least one layer of organic dye film consisting of practically at least one kind of organic dye compound. Information is recorded and erased by reversible physical changes caused by laser beam irradiation on an organic dye film single element. Specifically, data is recorded by a local physical change by recording laser ray irradiation, data is reproduced by detecting the returned optical intensity change of a reproducing laser beam less powerful than a recording laser beam, and data is erased by at least one application of a continuous beam or a pulse beam more powerful than a reproducing laser beam and less powerful than a recording laser beam. A physical change involves a shape change.
Abstract:
A novel rewritable optical information recording medium having a recording layer consisting of an organic dye film and capable of reversibly recording/erasing information by laser beam irradiation. A novel rewritable optical information recording medium having as a recording film at least one layer of organic dye film consisting of practically at least one kind of organic dye compound. Information is recorded and erased by reversible physical changes caused by laser beam irradiation on an organic dye film single element. Specifically, data is recorded by a local physical change by recording laser ray irradiation, data is reproduced by detecting the returned optical intensity change of a reproducing laser beam less powerful than a recording laser beam, and data is erased by at least one application of a continuous beam or a pulse beam more powerful than a reproducing laser beam and less powerful than a recording laser beam. A physical change involves a shape change.
Abstract:
An optical recording medium having at least a recording layer 11 and a light transmitting layer 13 formed on a substrate 10, in which the recording layer 11 is made of an organic material for absorbing an incident light of wavelength of 360 nm to 460 nm, and inducing physical change or chemical change to vary the refractive index, the light transmitting layer 13 is 10 mu m to 177 mu m in thickness, the relation between absorption coefficient "k" and pyrolysis temperature Tdec of organic material is 950 ( DEG C) 0.0.
Abstract translation:一种至少具有记录层11和透光层13的光记录介质,其形成在基板10上,其中记录层11由用于吸收波长为360nm至460nm的入射光的有机材料制成,以及 导致物理变化或化学变化以改变折射率,透光层13的厚度为10μm至177μm,吸收系数“k”与有机材料的热解温度Tdec之间的关系为950(℃) (Tdec(℃)-20)/ k <4100℃...(1),吸收系数“k”为k> 0.0。
Abstract:
An optical recording medium using Sn as the recording material to improve the jitter is provided, in which on the surface of a disc substrate 11 where a concave and convex shape dividing a track area is formed, are formed on the surface of the concave and convex shape a first protective layer 31 for protecting at least an optical recording layer 31, an optical recording layer 12 using a chemical compound at least composed of tin (Sn), nitrogen (N) and oxygen (O), formed on the first protective layer, a second protective layer 32 for protecting this optical recording layer, formed on this optical recording layer, and a light-transmittable layer 13 formed on the second protective layer; with this structure, the optical recording layer 12 under high temperature and high humidity can be stabilized by means of the first and second protective layers 31 and 32.
Abstract:
The present invention provides an optical recording medium including a recording layer 2 and an optical reflection layer 3 formed on a substrate 1. The recording layer 2 contains at least one particular polymethine pigment selected from polymethine pigments having 1 to 4 carbons in the methine main chain, so as to obtain a sufficient recording sensitivity for a red wavelength range of light.
Abstract:
The present invention provides an optical recording medium including a recording layer 2 and an optical reflection layer 3 formed on a substrate 1. The recording layer 2 contains at least one particular polymethine pigment selected from polymethine pigments having 1 to 4 carbons in the methine main chain, so as to obtain a sufficient recording sensitivity for a red wavelength range of light.
Abstract:
A rewritable optical information recording medium including a recording layer composed of an organic dye film is provided, in which recording and erasing information can be performed reversibly by laser light irradiation. A rewritable optical information recording medium including at least one organic dye film which is substantially made of only at least one kind of organic dye compounds as a recording film is provided. The recording and erasure of information are performed by a reversible physical change of the organic dye film substance caused by laser light irradiation. Specifically, data recording is performed by a physical change locally caused by the irradiation of recording laser light, data reproduction is performed by detecting change in intensity of returned light of reproducing laser light having less power than the recording laser light, and data erasure is performed by applying at least once continuous light or pulse light having laser power more than the reproducing laser light and less than the recording laser light. The physical change is a change in shape.
Abstract:
An optical information recording medium includes a recording layer in which a recording mark formed of a cavity is formed in accordance with a light for recording, and which contains therein a compound having a skeleton expressed by the general formula (1): where R 1 , R 2 , R 3 , and R 4 are either hydrogen atoms or substituents.
Abstract:
A write once optical recording medium has an inorganic recording film, the inorganic recording film includes an oxide film (3) of which principal component is germanium oxide GeO and a metal film (2) adjacent to this oxide film (3), the metal film (2) having a principal component of titanium/silicon alloy TiSi. According to this arrangement, it is possible to construct an inexpensive write once optical recording medium with large strength capable of high density recording by using a short wavelength light source and an optical system with a high numerical aperture having excellent characteristics.
Abstract:
The present invention provides an optical recording medium including a recording layer 2 and an optical reflection layer 3 formed on a substrate 1. The recording layer 2 contains at least one particular polymethine pigment selected from polymethine pigments having 1 to 4 carbons in the methine main chain, so as to obtain a sufficient recording sensitivity for a red wavelength range of light.