WO1985003837A3 - Device for the automatic centering of a recording medium - Google Patents

Device for the automatic centering of a recording medium Download PDF

Info

Publication number
WO1985003837A3
WO1985003837A3 PCT/CH1985/000115 CH8500115W WO8503837A3 WO 1985003837 A3 WO1985003837 A3 WO 1985003837A3 CH 8500115 W CH8500115 W CH 8500115W WO 8503837 A3 WO8503837 A3 WO 8503837A3
Authority
WO
WIPO (PCT)
Prior art keywords
recording medium
machined
stator
automatic centering
cylindrical surface
Prior art date
Application number
PCT/CH1985/000115
Other languages
French (fr)
Other versions
WO1985003837A2 (en
Inventor
Marc Heyraud
Original Assignee
Asgalium Sa
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 Asgalium Sa filed Critical Asgalium Sa
Publication of WO1985003837A2 publication Critical patent/WO1985003837A2/en
Publication of WO1985003837A3 publication Critical patent/WO1985003837A3/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers

Abstract

The rotor (29) comprises the tubular shaft (30) which is supported by the bearing (28) of which the outer part is integral with the stator (21). Said part (30) is machined with an inner cylindrical surface (31) and an outer cylindrical surface (32) which both extend throughout the length of the part. Both said surfaces may be machined with all the precision required during simultaneous or successive operations without loosening the part which is preferably held by its end opposite to the surface (33) in the clamp of a machine tool. Thereby, the assembly tolerances as to the eccentricity of the recording medium with respect to the stator of the motor which are of the order of 1 mum may be easily respected.
PCT/CH1985/000115 1984-07-26 1985-07-17 Device for the automatic centering of a recording medium WO1985003837A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH362984A CH657932A5 (en) 1984-07-26 1984-07-26 Tracking device automatically recording medium.
CH3629/84-8 1984-07-26

Publications (2)

Publication Number Publication Date
WO1985003837A2 WO1985003837A2 (en) 1985-09-12
WO1985003837A3 true WO1985003837A3 (en) 1985-12-05

Family

ID=4260083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1985/000115 WO1985003837A2 (en) 1984-07-26 1985-07-17 Device for the automatic centering of a recording medium

Country Status (3)

Country Link
EP (1) EP0191027A1 (en)
CH (1) CH657932A5 (en)
WO (1) WO1985003837A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730420A1 (en) * 1997-07-16 1999-01-21 Pm Dm Gmbh Replaceable disc store with holding magnet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725883A (en) * 1969-10-03 1973-04-03 Burroughs Corp Modular disk file unit
US3965485A (en) * 1973-09-13 1976-06-22 Aktiebolaget Addo Drive mechanism for a disc-shaped code carrier
GB2013388A (en) * 1978-01-26 1979-08-08 Exxon Research Engineering Co Improved magnetic data storage disc drive
US4367545A (en) * 1979-02-16 1983-01-04 Discovision Associates Video disc player
WO1984001462A1 (en) * 1982-09-30 1984-04-12 Drivetec Inc A mechanism for clamping and spinning a flexible disk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725883A (en) * 1969-10-03 1973-04-03 Burroughs Corp Modular disk file unit
US3965485A (en) * 1973-09-13 1976-06-22 Aktiebolaget Addo Drive mechanism for a disc-shaped code carrier
GB2013388A (en) * 1978-01-26 1979-08-08 Exxon Research Engineering Co Improved magnetic data storage disc drive
US4367545A (en) * 1979-02-16 1983-01-04 Discovision Associates Video disc player
WO1984001462A1 (en) * 1982-09-30 1984-04-12 Drivetec Inc A mechanism for clamping and spinning a flexible disk

Also Published As

Publication number Publication date
EP0191027A1 (en) 1986-08-20
CH657932A5 (en) 1986-09-30
WO1985003837A2 (en) 1985-09-12

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