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Pub. No.:    WO/2010/029327    International Application No.:    PCT/GB2009/051059
Publication Date: 18.03.2010 International Filing Date: 26.08.2009
G11B 7/246 (2006.01)
Applicants: DATALASE LTD. [--/GB]; Unit 3 Wheldon Road Widnes Cheshire WA8 8FW (GB) (For All Designated States Except US).
JARVIS, Anthony [GB/GB]; (GB) (For US Only).
WYRES, Christopher [GB/GB]; (GB) (For US Only).
PHILIPS, Tristan [GB/GB]; (GB) (For US Only).
CRIDLAND, John [GB/GB]; (GB) (For US Only).
WALKER, Martin [GB/GB]; (GB) (For US Only)
Inventors: JARVIS, Anthony; (GB).
WYRES, Christopher; (GB).
PHILIPS, Tristan; (GB).
WALKER, Martin; (GB)
Agent: GILL JENNINGS & EVERY LLP; The Broadgate Tower 20 Primrose Street London EC2A 2ES (GB)
Priority Data:
0816541.7 10.09.2008 GB
0816619.1 11.09.2008 GB
0905785.2 02.04.2009 GB
Abstract: front page image
(EN)A data storage medium comprising recording information in the form of a track of data points, the colour of each data point being selected from at least three different colours, wherein the recording information is disposed on a substrate which comprises a colour forming composition, wherein said colour forming comprises a colour former which is susceptible to changing to at least three different colours when irradiated with a laser, wherein the colour former is a leuco dye, a diacetylene or a carbazole. Methods of forming the data storage medium and methods of reading the medium are also provided.
(FR)L'invention concerne un support d’informations, comprenant des informations d'enregistrement sous la forme d'une piste de points de données, la couleur de chaque point de données étant choisie parmi au moins trois couleurs différentes, les informations d'enregistrement étant disposées sur un substrat qui comprend une composition chromogène, la composition chromogène comprenant un agent chromogène qui est susceptible de changer en au moins trois couleurs différentes lorsqu'il est exposé au rayonnement d’un laser, l'agent chromogène étant un leuco-colorant, un diacétylène ou un carbazole. Des procédés de formation du support d’informations, et des procédés de lecture du support sont également décrits.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)