FR2551576B1 - Memoire a disques magnetiques - Google Patents

Memoire a disques magnetiques

Info

Publication number
FR2551576B1
FR2551576B1 FR848412010A FR8412010A FR2551576B1 FR 2551576 B1 FR2551576 B1 FR 2551576B1 FR 848412010 A FR848412010 A FR 848412010A FR 8412010 A FR8412010 A FR 8412010A FR 2551576 B1 FR2551576 B1 FR 2551576B1
Authority
FR
France
Prior art keywords
magnetic disc
disc memory
memory
magnetic
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR848412010A
Other languages
English (en)
Other versions
FR2551576A1 (fr
Inventor
Kakuta Kazuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Publication of FR2551576A1 publication Critical patent/FR2551576A1/fr
Application granted granted Critical
Publication of FR2551576B1 publication Critical patent/FR2551576B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/148—Reducing friction, adhesion, drag
FR848412010A 1983-07-28 1984-07-27 Memoire a disques magnetiques Expired FR2551576B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983116451U JPS6026676U (ja) 1983-07-28 1983-07-28 磁気ディスク記憶装置

Publications (2)

Publication Number Publication Date
FR2551576A1 FR2551576A1 (fr) 1985-03-08
FR2551576B1 true FR2551576B1 (fr) 1989-06-16

Family

ID=14687439

Family Applications (1)

Application Number Title Priority Date Filing Date
FR848412010A Expired FR2551576B1 (fr) 1983-07-28 1984-07-27 Memoire a disques magnetiques

Country Status (3)

Country Link
US (1) US4656545A (fr)
JP (1) JPS6026676U (fr)
FR (1) FR2551576B1 (fr)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216557A (en) * 1981-09-07 1993-06-01 Papst-Motoren Gmbh & Co. Kg Disk storage device having a brushless dc drive motor
USRE38662E1 (en) 1980-05-10 2004-11-30 Papst Licensing Gmbh & Co. Kg Disk storage device having a sealed bearing tube
USRE37058E1 (en) 1980-05-10 2001-02-20 Papst Licensing Gmbh & Co. Kg Disk storage device having contamination seals
USRE38673E1 (en) 1980-05-10 2004-12-21 Papst Licensing Gmbh & Co. Kg Disk storage device having a hub sealing member feature
USRE38601E1 (en) 1980-05-10 2004-09-28 Papst Licensing, GmbH & Co. KG Disk storage device having a radial magnetic yoke feature
USRE38772E1 (en) 1981-03-18 2005-08-09 Papst Licensing Gmbh & Co. Kg Disk storage device having an undercut hub member
USRE35792E (en) * 1981-09-07 1998-05-12 Papst Licensing, Gmbh Disk storage drive
US5023733A (en) * 1985-12-16 1991-06-11 Seiko Epson Corporation Head positioning control for a spindle motor disk drive
US5184257A (en) * 1985-12-16 1993-02-02 Seiko Epson Corporation Head positioning control for a spindle motor disk drive
FR2627313B1 (fr) * 1988-02-12 1994-08-05 Mecanique Magnetique Sa Dispositif de suspension et d'entrainement de disques de memoire d'ordinateur
DE3828552C2 (de) * 1988-08-23 1994-10-13 Karl Deutsch Pruef Und Mesgera Verfahren und Vorrichtung zur Rißtiefenmessung
JP2669549B2 (ja) * 1988-12-14 1997-10-29 株式会社日立製作所 磁気デイスク装置
US5157295A (en) * 1989-01-25 1992-10-20 Conner Peripherals, Inc. Under-the-hub disk drive spin motor
GB2231372B (en) * 1989-05-12 1993-07-21 Bredport Limited Self-acting air bearing spindle for disk drive
JPH0742214Y2 (ja) * 1989-06-29 1995-09-27 株式会社コパル 流体軸受モータ
DE69003619T2 (de) * 1989-07-24 1994-04-28 Ebara Corp Spindelmotor.
EP0412509A3 (en) * 1989-08-11 1992-02-26 Ebara Corporation Bearing structure
CA2027225A1 (fr) 1989-10-27 1991-04-28 Donald James Macleod Moteur d'entrainement de disques
US5291358A (en) * 1990-03-16 1994-03-01 Matsushita Electric Industrial Co., Ltd. Magnetic recording device
DE4221429C2 (de) 1991-07-01 1999-01-14 Papst Motoren Gmbh & Co Kg Plattenspeicherantrieb, insbesondere für Festplattenspeicher
US5328272A (en) * 1991-12-23 1994-07-12 International Business Machines Spindle system for a disk drive
JPH0636546A (ja) * 1992-07-14 1994-02-10 Nec Corp 磁気ディスク装置
US5328270A (en) * 1993-03-25 1994-07-12 International Business Machines Corporation Hydrodynamic pump
US5973878A (en) * 1993-12-14 1999-10-26 Hitachi, Ltd. Recording disk apparatus and rotational supporting structure therefor, having a magnetic lubricant seal which is inclined
EP0670621B1 (fr) * 1994-03-04 2000-12-06 Philips Patentverwaltung GmbH Moteur électrique avec un stateur et un roteur
US5710678A (en) * 1994-07-22 1998-01-20 Seagate Technology, Inc. Disc drive with self-pressurizing fluid bearing and shaft-supporting-ball retaining element
US6282053B1 (en) * 1994-08-05 2001-08-28 Seagate Technology, Inc. Adhesiveless disc drive spindle assembly
JP2979375B2 (ja) * 1994-12-27 1999-11-15 ミネベア株式会社 扁平型ブラシレスモータ
KR19980015100A (ko) * 1996-08-20 1998-05-25 이형도 하드 디스크 드라이브의 공기 정화 방법 및 장치
US6271988B1 (en) 1997-01-04 2001-08-07 Papst Licensing Gmbh & Co. Kg Disk storage device with improved spindle torque and acceleration
US6025665A (en) * 1997-02-21 2000-02-15 Emerson Electric Co. Rotating machine for use in a pressurized fluid system
US6078121A (en) * 1997-02-21 2000-06-20 Emerson Electric Co. Rotor assembly for a rotating machine
US6005746A (en) * 1997-04-01 1999-12-21 Papst Licensing Gmbh & Co. Kg Disk storage device with improved spindle torque and acceleration
EP0869494B1 (fr) * 1997-04-01 2006-05-17 Papst Licensing GmbH & Co. KG Dispositif de mémoire à disques avec couple axial et accélération améliorés
US6344946B1 (en) 1997-04-01 2002-02-05 Papst Licensing Gmbh Disk storage device with improved spindle torque and acceleration
JP3076903B2 (ja) * 1997-09-29 2000-08-14 セイコーインスツルメンツ株式会社 正逆回転気体動圧軸受
JP2000324778A (ja) * 1999-04-30 2000-11-24 Sumitomo Electric Ind Ltd スピンドルモータ
US6313967B1 (en) 1999-08-03 2001-11-06 Maxtor Corporation Disk drive spindle air bearing
US6483215B1 (en) 1999-10-13 2002-11-19 Maxtor Corporation Hybrid air/fluid bearing
US6815850B2 (en) 2001-07-10 2004-11-09 International Business Machines Corporation Flux leakage barrier in fluid bearing for disk drive
TW200509447A (en) * 2003-07-22 2005-03-01 Du Pont Process for making planar framed membrane electrode assembly arrays, and fuel cells containing the same
US20050069234A1 (en) * 2003-09-29 2005-03-31 Takashi Kanai Motor with aerodynamic bearing
US7956499B2 (en) * 2005-06-02 2011-06-07 Seagate Technology Llc Motor magnetic force attenuator
JP2013080542A (ja) * 2011-10-04 2013-05-02 Alphana Technology Co Ltd ディスク駆動装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177493A (en) * 1960-12-06 1965-04-06 Rca Corp Apparatus for providing fluid bearings
FR1532726A (fr) * 1966-07-04 1968-07-12 English Electric Computers Ltd Dispositifs d'emmagasinage d'éléments d'information numériques
NL6815035A (fr) * 1967-10-24 1969-04-28
US4132414A (en) * 1972-02-07 1979-01-02 Jack Dinsdale Gramophone turntable apparatus
JPS5827903B2 (ja) * 1976-09-24 1983-06-13 株式会社東芝 磁気デイスク装置の封止機構
SU613388A1 (ru) * 1977-01-27 1978-06-30 Предприятие П/Я Р-6380 Привод дл запоминающего устройства
JPS54102445A (en) * 1978-01-27 1979-08-11 Matsushita Electric Ind Co Ltd Fluid bearing revolving apparatus
JPS5554718A (en) * 1978-10-16 1980-04-22 Matsushita Electric Ind Co Ltd Rotary transmission device
JPS5945844B2 (ja) * 1979-07-26 1984-11-09 松下電器産業株式会社 回転装置
JPS5718812A (en) * 1980-07-10 1982-01-30 Nippon Seiko Kk Dynamic pressure type spindle
US4339814A (en) * 1980-10-20 1982-07-13 Discovision Associates Spindle assembly for a video recorder-playback machine
JPS5945845B2 (ja) * 1980-12-09 1984-11-09 松下電器産業株式会社 回転装置
NL8201747A (nl) * 1981-04-27 1982-11-16 Nippon Seiko Kk Fluidum lager van het dynamische druktype.
JPS585518A (ja) * 1981-07-01 1983-01-12 Nippon Seiko Kk 動圧形スピンドル装置
JPS5830965A (ja) * 1981-08-15 1983-02-23 望月　淳司 衿保形部材
JPS5834227A (ja) * 1981-08-26 1983-02-28 Nippon Seiko Kk 動圧形流体軸受
JPS5854223A (ja) * 1981-09-25 1983-03-31 Nippon Seiko Kk 動圧形スピンドル装置
US4429336A (en) * 1981-09-28 1984-01-31 Data General Corporation Disc drive dynamic seal
US4487514A (en) * 1981-09-29 1984-12-11 Tokyo Shibaura Denki Kabushiki Kaisha Motor
JPS58109715A (ja) * 1981-12-21 1983-06-30 Matsushita Electric Ind Co Ltd 流体軸受装置

Also Published As

Publication number Publication date
FR2551576A1 (fr) 1985-03-08
US4656545A (en) 1987-04-07
JPS6026676U (ja) 1985-02-22

Similar Documents

Publication Publication Date Title
FR2551576B1 (fr) Memoire a disques magnetiques
FR2522183B1 (fr) Memoire a semi-conducteurs
IT1180825B (it) Valvola magnetica
IT1152243B (it) Cartuccia a disco magnetico
IT1180826B (it) Valvola magnetica
FI840761A0 (fi) Datornaetsystem jaemte anvaendning daerav foer oeverfoering av information
FR2528613B1 (fr) Memoire a semi-conducteurs
KR850007517A (ko) 자기디스크카세트
IT1199571B (it) Valvola a cassetto
FR2528213B1 (fr) Dispositif de memoire a disque magnetique
FR2549190B1 (fr) Robinet-vanne a disque
EP0122564A3 (en) Read only memory
KR860002397U (ko) 자기 디스크 장치
IT8348584A0 (it) Memoria a dischi, in particolare memoria a dischi magnetici
IT1175877B (it) Valvola magnetica
FR2533739B1 (fr) Memoire a semiconducteurs
MX151677A (es) Mejoras en cartucho de disco magnetico
DE68912433D1 (de) Magnetplattenkassette.
FR2593318B1 (fr) Organe de memoire a disque magnetique
FR2548430B1 (fr) Memoire a bulles magnetiques
FR2544121B1 (fr) Memoire a bulles magnetiques
FR2548863B1 (fr) Faucheuse a disques perfectionnee
FR2528211B1 (fr) Dispositif de memoire a disque magnetique
IT1163879B (it) Serratura a combinazione a dischi
FR2449319B1 (fr) Memoire a disques magnetiques

Legal Events

Date Code Title Description
ST Notification of lapse