摘要:
The invention relates to novel metal complexes for optical data carriers, whereby the latter is preferably a transparent substrate which is, optionally already covered with one or several reflective layers. A light-inscriptible information layer is disposed on the surface thereof, in addition to, optionally, one or several reflective layers and, optionally, a protective layer or another substrate or a covering layer which is inscriptible or readable with blue, red or infrared light, preferably laser light. The information layer contains a light-absorbing compound and, optionally, a binding agent. The invention is characterised in that the at least said metal complex is used as a light-absorbing compound.
摘要:
The invention relates to a holographic data memory (1) comprising a memory layer (2), which contains a dye that can be modified by exposure, preferably a bleachable or destructible dye. The memory layer (2) is configured for storing holographic information using the local absorption properties in the memory layer (2). A reflection layer (6) is preferably located behind the memory layer (2).
摘要:
Metal-containing azo compounds represented by at least one of the general formulae (a1), (a2), (a3) and (a4) and being useful in forming recording layers of optical recording media; and optical recording media which have recording layers containing the compounds, wherein M is a divalent metal; X and X are each a residue forming a mono- or poly-cyclic aromatic ring; and Y and Y are each a residue forming a nitrogenous heteroaromatic ring, with the proviso that in at least either of the combination of X and X and that of Y and Y , both residues are different from each other.
摘要翻译:由通式(a1),(a2),(a3)和(a4)中的至少一个表示的含金属偶氮化合物,可用于形成光记录介质的记录层; 和具有含有这些化合物的记录层的光学记录介质,其中M是二价金属; X 1和X 2各自为形成单环或多环芳环的残基; Y 1和Y 2各自为形成含氮杂芳环的残基,条件是在X 1和X 2的组合以及Y 1和Y 2的组合中的至少一个中,Y <2>,两个残基彼此不同。
摘要:
High sensitive organic dye-in-polymer (DIP) medium for write-once-read-many (WORM) optical discs with fluorescent reading. The medium consists of a fluorescent color means, capable of absorbing writing radiation produced by a laser, a compound capable of generating free radicals upon influence of heat produced by the writing radiation and a polymer capable of producing a translucent film enabling high quantum yield of the fluorescence induced in the color means. The color means can be selected from xanthene dyes of the eosine and rhodamine groups, acridine, oxazine, azine, peylene, violanthrone, cyanine, phtalocyanine, indigoide colors and porphyries. The free radicals generating compound can be chosen from the group of compounds comprising azo and diazoi compounds or peroxyde compounds. The film producing polymer can be selected from the group of compounds comprising cellulose ethers, vinyl resins or acrylic resins.
摘要:
The invention relates to novel side-chained polymers in which a high optical anisotropy can be obtained by radiation at room temperature. Said optical anisotropy is highly thermostable.
摘要:
The present invention relates to pyridinone based azo dyes and/or of anionic azo metal complex dye salts made thereof with cationic basic yellow dyes, which are characterized by an unsaturated bond in beta-position to the endocyclic N atom of the pyridinone, and to their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs pyridinone based azo dyes and/or anionic azo metal complex dye salts made thereof with cationic basic yellow dyes, which are characterized by an unsaturated bond in beta-position to the endocyclic N atom of the pyridinone, in the optical layer.
摘要:
The invention relates to an optical recording medium comprising a substrate, a recording layer and a reflecting layer, wherein the recording layer comprises a compound of formula (I), (II), (III), (IV), (V) or a tautomer or a salt thereof. For the precise definitions of the substituents, reference is made to the description. Recording and playback are carried out especially at a wavelength of from 350 to 500 nm, for example using a blue laser. The recording and playback quality is excellent and allows high storage density. Also claimed are optical recording media for recording or playing back at from 380 to 440 nm that comprise a compound having an absorption maximum in the wave range from 300 to 400 nm and a compound of formula (IX).
摘要:
The invention relates to an optical data carrier that contains a preferably transparent substrate that is optionally already coated with one or more reflective layers, onto whose surface an information layer which can be written on with light, optionally one or more reflective layers and optionally a protective layer or a further substrate or a cover layer are applied. Said optical data carrier can be written on and read with blue, red or infrared light, preferably laser light, and the information layer comprises a light-absorbing compound and optionally a binder. The inventive data carrier is further characterized in that at least one heterocyclic azo dye is used as the light-absorbing compound.
摘要:
The invention relates to a write-once optical data carrier in which organic and/or inorganic light-absorbing compounds are used as the information layer, especially for high-density optical data carriers which function with a blue laser in the wavelength range of 360-460 nm. The invention also relates to the application of the above-mentioned light-absorbing compound to a suitable substrate (especially polycarbonate), e.g. by spin coating.
摘要:
The invention relates to a method according to which digital information is stored in a multiple light-induced manner in a two-dimensionally extended medium and can be deleted again, whereby the information is optically readable.