Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2013146089) GLASS SUBSTRATE FOR MAGNETIC DISK, MAGNETIC DISK, MAGNETIC DISK DRIVE DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/146089 International Application No.: PCT/JP2013/055592
Publication Date: 03.10.2013 International Filing Date: 28.02.2013
IPC:
G11B 5/73 (2006.01) ,G11B 5/84 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
62
Record carriers characterised by the selection of the material
73
Base layers
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
84
Processes or apparatus specially adapted for manufacturing record carriers
Applicants:
輿水 修 KOSHIMIZU, Osamu [JP/JP]; JP (US)
大西 勝 ONISHI, Masaru [JP/JP]; JP (US)
兼子 祥治 KANEKO, Shoji [JP/PH]; PH (US)
HOYA株式会社 HOYA CORPORATION [JP/JP]; 東京都新宿区中落合2丁目7番5号 7-5, Naka-Ochiai 2-Chome, Shinjuku-ku, Tokyo 1618525, JP (AllExceptUS)
ホーヤ ガラスディスク フィリピン インコーポレーテッド HOYA GLASS DISK PHILIPPINES, INC. [PH/PH]; ラグーナ4024 ビニャン ラグーナ テクノパーク スペシャル エクスポート プロセッシング ゾーン イースト メイン アベニュー 111 111 East Main Avenue, Special Export Processing Zone, Laguna Technopark, Binan, Laguna 4024, PH (AllExceptUS)
Inventors:
輿水 修 KOSHIMIZU, Osamu; JP
大西 勝 ONISHI, Masaru; JP
兼子 祥治 KANEKO, Shoji; PH
Agent:
グローバル・アイピー東京特許業務法人 GLOBAL IP TOKYO; 東京都新宿区西新宿8丁目3番30号 カーメルII CARMEL II, 8-3-30, Nishi-Shinjuku, Shinjuku-ku, Tokyo 1600023, JP
Priority Data:
2012-08304330.03.2012JP
Title (EN) GLASS SUBSTRATE FOR MAGNETIC DISK, MAGNETIC DISK, MAGNETIC DISK DRIVE DEVICE
(FR) SUBSTRAT EN VERRE DESTINÉ À UN DISQUE MAGNÉTIQUE, DISQUE MAGNÉTIQUE ET DISPOSITIF D'ENTRAÎNEMENT DE DISQUE MAGNÉTIQUE
(JA) 磁気ディスク用ガラス基板、磁気ディスク、磁気ディスクドライブ装置
Abstract:
(EN) Provided are a glass substrate for a magnetic disk, a magnetic disk, and a magnetic disk drive device, with which fluttering does not occur during high-speed rotation, and the generation of particles during manufacture is suppressed. This glass substrate for a magnetic disk has a pair of main surfaces, two sidewall surfaces that form an inner hole and an external shape, and chamfered surfaces between the main surfaces and sidewall surfaces, and the sidewall surface forming the inner hole has a recess.
(FR) L'invention concerne un substrat en verre destiné à un disque magnétique, un disque magnétique et un dispositif d'entraînement de disque magnétique, grâce auxquels des battements ne se produisent pas pendant une rotation à grande vitesse et la génération de particules pendant la fabrication est supprimée. Ce substrat en verre destiné à un disque magnétique comporte une paire de surfaces principales, deux surfaces de paroi latérale qui forment un orifice interne et une forme externe et des surfaces chanfreinées entre les surfaces principales et les surfaces de paroi latérale, la surface de paroi latérale formant l'orifice interne présentant un évidement.
(JA)  高速回転時にフラッタリングが生ずることなく、かつ製造時にパーティクルが発生し難くなるようにした磁気ディスク用ガラス基板、磁気ディスク、磁気ディスクドライブ装置が提供される。本発明の磁気ディスク用ガラス基板は、一対の主表面と、内孔及び外形を構成する2つの側壁面と、主表面と側壁面との間の面取面とを有し、内孔を構成する側壁面が凹み部を有する。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, 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, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, 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, RS, 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: Japanese (JA)
Filing Language: Japanese (JA)