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1. (WO1998049164) WRITABLE AND ERASABLE HIGH-DENSITY OPTICAL STORAGE MEDIA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049164 International Application No.: PCT/EP1998/002274
Publication Date: 05.11.1998 International Filing Date: 17.04.1998
Chapter 2 Demand Filed: 23.10.1998
IPC:
C07D 471/06 (2006.01) ,C07D 495/22 (2006.01) ,C09B 5/62 (2006.01) ,G11B 7/0045 (2006.01) ,G11B 7/005 (2006.01) ,G11B 7/0055 (2006.01) ,G11B 7/006 (2006.01) ,G11B 7/244 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
471
Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/-C07D463/251
02
in which the condensed system contains two hetero rings
06
Peri-condensed systems
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
495
Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
22
in which the condensed system contains four or more hetero rings
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
5
Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
62
Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series
[IPC code unknown for G11B 7/045][IPC code unknown for G11B 7/05][IPC code unknown for G11B 7/055]
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
06
using electrography
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
241
Record carriers characterised by the selection of the material
242
of recording layers
244
comprising organic materials only
Applicants:
CIBA SPECIALTY CHEMICALS HOLDING INC. [CH/CH]; Klybeckstrasse 141 CH-4057 Basel, CH
Inventors:
SPAHNI, Heinz; CH
MIZUGUCHI, Jin; JP
SCHMIDHALTER, Beat; CH
WOLLEB, Annemarie; CH
BUDRY, Jean-Luc; CH
GILLER, Gérald; CH
Priority Data:
997/9729.04.1997CH
Title (EN) WRITABLE AND ERASABLE HIGH-DENSITY OPTICAL STORAGE MEDIA
(FR) SUPPORT OPTIQUE D'ARCHIVAGE INSCRIPTIBLE ET EFFAÇABLE
Abstract:
(EN) The invention relates to an optical storage medium comprising a substrate and a storage layer, wherein the storage layer comprises a compound of formula (I) or (II) in which A and A', independently of one another, are unsubstituted or mono- or di-halo-, -hydroxy-, -C1-C6alkyl-, -C1-C6alkoxy-, -cyano- or -nitro-substituted phenyl, pyridyl, pyrrolyl, imidazolyl, furyl or thienyl, which can, if desired, be fused to a benzene ring, are halide, tetrafluoroborate or unsubstituted or with one or more halogen substituted C1-C6alkanesulfonate, benzenesulfonate, C1-C6alkylbenzenesulfonate, C1-C6alkylsulfate or di-C1-C6alkylphosphonate of N-C1-C6alkyl-pyridiniumyl, or are unsubstituted or mono- or di-hydroxy-substituted C2-C6alkyl or C2-C6alkenyl, whose chain may be uninterrupted or interrupted by one or two oxygen atoms, B and B', independently of one another, are 2H, S, S2 or SO2, and n and n', independently of one another, are each a number from 1 to 4. The invention also relates to a process for the optical writing, storage, reading, modification or erasing of data at a wavelength of from 400 to 700 nm using a novel recording medium, to an optical recorder for the optical writing, modification or erasing of data using only continuous laser radiation or only modulated laser radiation, to a process for converting a compound of formula (I) or (II) from a black form into a red form by mechanical force, and to new compounds of formula (I) or (II).
(FR) L'invention concerne un support optique d'archivage comprenant un substrat et une couche mémoire comprenant un composé de la formule (I) ou de la formule (II) où A et A' désignent indépendamment l'un de l'autre phényle substitué par mono- ou di-halo, par hydroxy, par alkyle C1-C6, par alcoxy C1-C6, par cyano ou par nitro, pyridyle, pyrrolyle, imidazolyle, furyle ou thiényle, qui peuvent le cas échéant être fixés à un composé cyclique benzène, désignent halogénure, tétrafluoroborate ou sulfonate d'alcane C1-C6 non substitué ou substitué par une halogénure ou plus, sulfonate de benzène, sulfonate d'alkylbenzène C1-C6, sulfate d'alkyle C1-C6 ou phosphonate de di-alkyle C1-C6 de N-alkyle C1-C6-pyridiniumyle, ou désignent alkyle C2-C6 non substitué ou substitué par mono- ou di-hydroxy ou alkényle C2-C6, dont la chaîne peut être ininterrompue ou interrompue par un ou deux atomes d'oxygène; B et B' désignent indépendamment l'un de l'autre, 2 H, S, S2 ou SO2, et n et n' valent indépendamment l'un de l'autre un nombre compris entre 1 et 4. L'invention concerne un procédé permettant d'inscrire, de mémoriser, de lire, de modifier ou d'effacer de manière optique des données à une longueur comprise entre 400 et 700 nm, à l'aide d'un nouveau support d'archivage, ainsi qu'un enregistreur optique permettant d'inscrire, modifier ou effacer des données de manière optique, uniquement à l'aide d'un faisceau laser continu ou d'un faisceau laser modulé. L'invention concerne également un procédé permettant de convertir un composé de la formule (I) ou de la formule (II) d'une forme noire en une forme rouge par force mécanique, ainsi que de nouveaux composés de la formule (I) ou de la formule (II).
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
KR1020010020421EP0977754JP2002501497CN1252802AU1998075270