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1. (WO2019066086) GLASS SPACER AND HARD DISC DRIVE DEVICE
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/066086 International Application No.: PCT/JP2018/036747
Publication Date: 04.04.2019 International Filing Date: 01.10.2018
IPC:
G11B 23/00 (2006.01) ,G11B 5/65 (2006.01) ,G11B 17/038 (2006.01) ,G11B 25/04 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
23
Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus
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
64
comprising only the magnetic material without bonding agent
65
characterised by its composition
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
17
Guiding record carriers not specifically of filamentary or web form, or of supports therefor
02
Details
038
Centering or locking of a plurality of discs in a single cartridge
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
25
Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing
04
using flat record carriers, e.g. disc, card
Applicants:
HOYA株式会社 HOYA CORPORATION [JP/JP]; 東京都新宿区西新宿六丁目10番1号 6-10-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 1608347, JP
Inventors:
高野 正夫 TAKANO, Masao; JP
江田 伸二 EDA, Shinji; VN
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:
2017-19125629.09.2017JP
Title (EN) GLASS SPACER AND HARD DISC DRIVE DEVICE
(FR) ÉLÉMENT D'ESPACEMENT EN VERRE ET DISPOSITIF DE D'ENTRAÎNEMENT DE DISQUE DUR
(JA) ガラススペーサ及びハードディスクドライブ装置
Abstract:
(EN) The purpose of the present invention is to prevent adhesion between a magnetic disc and a spacer when removing the magnetic disc and the spacer from a hard disc drive device where the magnetic disc and the spacer are installed. The surface roughness Ra on the principal surface of the ring-shaped glass spacer in contact with the magnetic disc in the hard disc drive device is set to 1.0 µm or less and the average inclination R∆a of the principal surface is set to 0.02 or greater.
(FR) L'objectif de la présente invention est d'empêcher l'adhérence entre un disque magnétique et un élément d'espacement lors du retrait du disque magnétique et de l'élément d'espacement à partir d'un dispositif d'entraînement de disque dur dans lequel le disque magnétique et l'élément d'espacement sont installés. La rugosité de surface Ra sur la surface principale de l'élément d'espacement en verre en forme d'anneau en contact avec le disque magnétique dans le dispositif d'entraînement de disque dur est réglée à 1,0 µm ou moins et l'inclinaison moyenne R ∆ a de la surface principale est réglée à 0,02 ou plus.
(JA) 磁気ディスクとスペーサが組みつけられたハードディスクドライブ装置から、磁気ディスク及びスペーサを抜き取るとき、磁気ディスクとスペーサの密着を生じにくくするために、ハードディスクドライブ装置内の、磁気ディスクに接するように設けられるリング状のガラススペーサの磁気ディスクと接する主表面の表面粗さRaを1.0μm以下にし、前記主表面の平均傾斜RΔaを0.02以上にする。
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, SA, 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, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)