JPS57203258A - Magnetic disc device - Google Patents

Magnetic disc device

Info

Publication number
JPS57203258A
JPS57203258A JP8785981A JP8785981A JPS57203258A JP S57203258 A JPS57203258 A JP S57203258A JP 8785981 A JP8785981 A JP 8785981A JP 8785981 A JP8785981 A JP 8785981A JP S57203258 A JPS57203258 A JP S57203258A
Authority
JP
Japan
Prior art keywords
magnetic disc
hub
disc
temperature
magnetic
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.)
Pending
Application number
JP8785981A
Other languages
Japanese (ja)
Inventor
Yoshinori Iifushi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8785981A priority Critical patent/JPS57203258A/en
Publication of JPS57203258A publication Critical patent/JPS57203258A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—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 ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/021—Containers; Storing means both adapted to cooperate with the recording or reproducing means comprising means for reducing influence of physical parameters, e.g. temperature change, moisture

Abstract

PURPOSE:To reduce the temperature difference between magnetic discs and to suppress the position shift of recording tracks, by providing a fixed section of a hub to a rotary shaft at the center toward axial direction and constituting both axial sides as almost symmetrical shape via the fixed section of fitting part. CONSTITUTION:Since a fixed part 13b of a hub 13 fitted with a magnetic disc 11 is located at the center axially, when a rotary shaft 14 is driven and the magnetic disc 11 is turned, the magnetic disc 11 stirs air around the disc 11 and the temperature of air risen. In this case, the temperature of the hub 13 at the fitting part of each magnetic disc 11 is small and the deformation of the hub 13 is small, allowing to improve the alignment accuracy remarkably and this method is effective to high density recording of the disc.
JP8785981A 1981-06-08 1981-06-08 Magnetic disc device Pending JPS57203258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8785981A JPS57203258A (en) 1981-06-08 1981-06-08 Magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8785981A JPS57203258A (en) 1981-06-08 1981-06-08 Magnetic disc device

Publications (1)

Publication Number Publication Date
JPS57203258A true JPS57203258A (en) 1982-12-13

Family

ID=13926604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8785981A Pending JPS57203258A (en) 1981-06-08 1981-06-08 Magnetic disc device

Country Status (1)

Country Link
JP (1) JPS57203258A (en)

Similar Documents

Publication Publication Date Title
JPS5736473A (en) Rotating driving device
DE3470971D1 (en) Magnetic disc memory with a disc stack hub mounted on bearings on both sides
GB2040538B (en) Enclosed disc drive with improved air flow
JPS54143665A (en) Rotation information detector of engines
FR2463021B1 (en) STEERING STEERING DRIVE WITH STEERING AXLE SHAFT AND SIMPLE DISMANTLING GASKET JOINT
FR2455699B1 (en) BUTTERFLY VALVE AND MANUFACTURING METHOD THEREFOR
JPS57203258A (en) Magnetic disc device
JPS57169936A (en) Optical disc device
JPS643890A (en) Disk device
JPS57140961A (en) Transmission gear
JPS5423508A (en) Magnetic disc medium
JPS56137559A (en) Magnetic disc device
FR2669161B1 (en) IMPROVEMENTS IN THE INDUCED ROTORS OF ELECTROMAGNETIC RETARDERS AND IN THEIR MANUFACTURING METHODS AND DEVICES.
JPS57167523A (en) Device for clutch
JPS56169271A (en) Magnetic disk device
AU531027B2 (en) Mushroom valve housing with fluid coolant circulation
JPS56101679A (en) Magnetic disk device
JPS56145549A (en) Magnetic tape device
JPS55150171A (en) Recording and reproducing device for information signal
JPS5631560A (en) Rotary valve
JPS53109857A (en) Assembly type forming roll
JPS55145812A (en) Bearing structure utilizing tilting pad
JPS57183682A (en) Magnetic disk device
JPS5286611A (en) Method of assembling foot turn section of wagon
JPS5510840A (en) Linear step motor