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1. (WO2010072343) DISC SHAPED HIGH DENSITY RECORDING MEDIUM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/072343 International Application No.: PCT/EP2009/008902
Publication Date: 01.07.2010 International Filing Date: 12.12.2009
IPC:
G11B 7/254 (2006.01) ,G11B 7/253 (2006.01)
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
252
of layers other than recording layers
254
of protective topcoat layers
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
252
of layers other than recording layers
253
of substrates
Applicants:
BAYER MATERIALSCIENCE AG [DE/DE]; 51368 Leverkusen, DE (AllExceptUS)
BAYER MATERIALSCIENCE (CHINA) COMPANY LTD. [CN/CN]; 82 Muhua Road Shanghai Chemical Industry Park Caojing Shanghai 201507, CN (CN)
BRUDER, Friedrich-Karl [DE/DE]; DE (UsOnly)
HAESE, Wilfried [DE/DE]; DE (UsOnly)
OSER, Rafael [DE/DE]; DE (UsOnly)
PROTTE, Rainer [DE/DE]; DE (UsOnly)
MEYER, Alexander [DE/DE]; DE (UsOnly)
HILDENBRAND, Karlheinz [DE/DE]; DE (UsOnly)
WONG, Raymond [CN/CN]; CN (UsOnly)
ZHANG, Ice [CN/CN]; CN (UsOnly)
Inventors:
BRUDER, Friedrich-Karl; DE
HAESE, Wilfried; DE
OSER, Rafael; DE
PROTTE, Rainer; DE
MEYER, Alexander; DE
HILDENBRAND, Karlheinz; DE
WONG, Raymond; CN
ZHANG, Ice; CN
Common
Representative:
BAYER MATERIALSCIENCE AG [DE/DE]; Law and Patents, Patents and Licensing 51368 Leverkusen, DE
Priority Data:
PCT/CN2008/00208225.12.2008CN
Title (EN) DISC SHAPED HIGH DENSITY RECORDING MEDIUM
(FR) SUPPORT D'ENREGISTREMENT HAUTE DENSITÉ EN FORME DE DISQUE
Abstract:
(EN) This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25°C at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit / groove structure of > 85%.
(FR) La présente invention concerne un support d'enregistrement optique dans lequel au moins une couche d'enregistrement et une couche transmettrice de lumière sont formées séquentiellement sur un substrat et dans lequel la lumière est émise depuis le côté de la couche transmettrice de lumière pour enregistrer et/ou reproduire des signaux d'information, ledit substrat comprenant une partie moulée par injection, et ledit substrat présentant un module d'Young E d'au moins 2,15 GPa et un facteur Q inférieur à 160 mesuré à 25 °C à 2000 Hz selon la norme ASTM E 756-05 05 et une transcriptibilité de la structure creux / sillon > 85 %.
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 (ARIPO) (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)
Also published as:
EP2382630JP2012514279US20110300325CN102576557KR1020110113620