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1. (WO2003009284) OPTICAL RECORDING/REPRODUCING MEIUM−USE SUBSTRATE, PRODUCTION METHOD FOR OPTICAL RECORDING/REPRODUCING MEDIUM PRODUCING STAMPER AND OPTICAL RECORDING/REPRODCING MEDIUM PRODUCING STAMPER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2003/009284    International Application No.:    PCT/JP2002/007314
Publication Date: 30.01.2003 International Filing Date: 18.07.2002
Chapter 2 Demand Filed:    22.01.2003    
IPC:
G11B 5/00 (2006.01), G11B 7/007 (2006.01), G11B 7/24 (2006.01), G11B 7/26 (2006.01)
Applicants: SONY CORPORATION [JP/JP]; 7-35, Kitashinagawa 6-chome, Shinagawa-ku, Tokyo 141-0001 (JP) (For All Designated States Except US).
ENDOH, Sohmei [JP/JP]; (JP) (For US Only).
SUZUKI, Tadao [JP/JP]; (JP) (For US Only).
SHIMIZU, Jun [JP/JP]; (JP) (For US Only).
NAKANO, Jun [JP/JP]; (JP) (For US Only)
Inventors: ENDOH, Sohmei; (JP).
SUZUKI, Tadao; (JP).
SHIMIZU, Jun; (JP).
NAKANO, Jun; (JP)
Agent: TSUNODA, Yoshisue; Shinjuku Bldg., 8-1, Nishishinjuku 1-chome, Shinjuku-ku, Tokyo 160-0023 (JP)
Priority Data:
2001-218409 18.07.2001 JP
Title (EN) OPTICAL RECORDING/REPRODUCING MEIUM−USE SUBSTRATE, PRODUCTION METHOD FOR OPTICAL RECORDING/REPRODUCING MEDIUM PRODUCING STAMPER AND OPTICAL RECORDING/REPRODCING MEDIUM PRODUCING STAMPER
(FR) SUBSTRAT UTILISANT UN SUPPORT D'ENREGISTREMENT/LECTURE OPTIQUE, PROCEDE DE PRODUCTION D'UNE MATRICE DE PRODUCTION DE SUPPORT D'ENREGISTREMENT/LECTURE OPTIQUE ET MATRICE DE PRODUCTION DE SUPPORT D'ENREGISTREMENT/LECTURE OPTIQUE
Abstract: front page image
(EN)An optical recording/reproducing medium having grooves (2) formed along recording tracks and used for recording/reproducing when irradiated with light L with a specified wavelength &lgr;, wherein the track pitch p of a groove (2) is at least 200 nm and up to 350 nm, and a ratio wg/p between the width wg of a groove (2) and a track pitch p is at least 0.24 and up to 0.67.
(FR)L'invention concerne un support d'enregistrement/lecture optique possédant des rainures (2) formées le long des pistes d'enregistrement et utilisées en vue d'enregistrer/lire lorsque qu'il est irradié avec une lumière L à longueur d'onde $g(l) spécifique, le pas transversal p d'une rainure (2) étant d'au moins 200 nm et atteignant au maximum 300 nm, et un rapport wg/p entre la largeur wg d'une rainure (2) et d'un pas transversal p étant d'au moins 0,24 et au maximum de 0,67.
Designated States: CN, JP, KR, US.
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, SK, TR).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)