Abstract:
A substrate (114) has a first dye layer (118) that locationally changes in color to a first color upon exposure to an optical beam at a first power level, and a second dye layer (120) that locationally changes in color to a second color upon exposure to the optical beam at the second power level. The optical beam impinges a region of the substrate to render the region with a color selected from at least one of the first color and the second color. The optical beam impinges the region at a power level selected from at least the first power level and the second power level (608).
Abstract:
An optical recording medium permitting excellent recording and reproduction within the wavelength region of prior art and/or a short wavelength region of about 630 to 690 nm, which contains in the recording layer a salt-forming dye composed of an ion of an azo-metal complex of general formula (I): (A-N=N-B)m.M1, and an ion of a cyanine dye of general formula (II) and exhibiting a complex index of refraction wherein the imaginary part k is 0.20 or below in the wavelength regions of a recording beam and/or reproducing beam, or at least one member selected from among azooxovanadium metal complexes wherein the ligands are azo compounds of general formula (III): A-N=N-B, and metal complexes wherein the ligands are azo compounds of general formula (IV) or (V). In the formulae (I) and (III), A is an aromatic group substituted with an active hydrogen group at a position adjacent to the diazo group or a nitrogenous heteroaromatic group having a nitrogen atom capable of coordinating to the oxovanadium at a position adjacent to the carbon atom to which the diazo group is bonded; B is an aromatic group having an active hydrogen group at a position adjacent to the diazo group; m is 1 or 2; and M1 is a central metal; in formula (II), Q and Q are each an atomic group forming a 5-membered nitrogenous ring optionally having a fused ring: L is a methyne chain; and R and R are each alkyl, and in formulae (IV) and (V), X is an active hydrogen group; R and R are each alkyl, with the total number of carbon atoms of R and R being 2 to 8; R is nitro; and n is 0 or 1.
Abstract:
Disclosed is an optical recording medium on/from which high-density optical information can be recorded/reproduced with a short-wavelength laser light. The optical recording medium comprises a substrate and a recording layer arranged on the substrate onto or from which information can be recorded or reproduced through irradiation of light, and the recording layer contains a 7-amino-carbostyril compound represented by the following general formula [I]. [1] (In the general formula [1], X represents an oxygen atom or a sulfur atom; R1 represents a hydrogen atom or an optionally substituted straight or branched chain alkyl group having 1-12 carbon atoms; R6 represents an optionally substituted straight or branched chain alkyl group having 1-12 carbon atoms; and n is a number from 1 to 4.)
Abstract translation:公开了一种光学记录介质,其上可以用短波长激光记录/再现高密度光学信息。 光记录介质包括基板和布置在基板上的记录层,通过照射光可以记录或再现信息,并且记录层含有由以下通式表示的7-氨基喹诺酮化合物[I ]。 [1](通式[1]中,X表示氧原子或硫原子,R 1表示氢原子或具有1-12个碳原子的任选取代的直链或支链烷基; R 6表示任选取代的直链 或具有1-12个碳原子的支链烷基; n为1至4的数)。