JPS5573976A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS5573976A
JPS5573976A JP14741678A JP14741678A JPS5573976A JP S5573976 A JPS5573976 A JP S5573976A JP 14741678 A JP14741678 A JP 14741678A JP 14741678 A JP14741678 A JP 14741678A JP S5573976 A JPS5573976 A JP S5573976A
Authority
JP
Japan
Prior art keywords
hub
magnetic disk
disk
heat
projection
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.)
Granted
Application number
JP14741678A
Other languages
Japanese (ja)
Other versions
JPS5845112B2 (en
Inventor
Reizo Kaneko
Shigemitsu Oguchi
Kunio Hoshitani
Katsumi Eriguchi
Nobuyoshi Ushijima
Tadashi Yoshizawa
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon 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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP14741678A priority Critical patent/JPS5845112B2/en
Publication of JPS5573976A publication Critical patent/JPS5573976A/en
Publication of JPS5845112B2 publication Critical patent/JPS5845112B2/en
Expired 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 prevent the heat shift to the hub for the magnetic disk device which decreases the temperature difference between disks and thus reducing the position shift of the recording track. CONSTITUTION:Heat insulating material 6 is inserted between magnetic disk 10 on the lowest surface and hub 3. Material 6 is formed with the material such as the high-molecular material, ceramics and the like which features much smaller heat conductivity than the aluminum material used normally for the disk. Otherwise, such heat insulating material can also be used that features an extremely small area of the contact part to hub 3 or magnetic disk 1 with the heat conductivity not so small for component 6 itself. In other words, projection 7 is provided to component 6 at the contact part to the contact surface of hub 3. And the number of projection 7 is set to three at least on a circumference of the turning direction of hub 3, thus keeping the steady relative position between disk 1 and hub 3.
JP14741678A 1978-11-29 1978-11-29 magnetic disk device Expired JPS5845112B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14741678A JPS5845112B2 (en) 1978-11-29 1978-11-29 magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14741678A JPS5845112B2 (en) 1978-11-29 1978-11-29 magnetic disk device

Publications (2)

Publication Number Publication Date
JPS5573976A true JPS5573976A (en) 1980-06-04
JPS5845112B2 JPS5845112B2 (en) 1983-10-07

Family

ID=15429803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14741678A Expired JPS5845112B2 (en) 1978-11-29 1978-11-29 magnetic disk device

Country Status (1)

Country Link
JP (1) JPS5845112B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677079U (en) * 1979-11-16 1981-06-23
JPS582794U (en) * 1981-06-29 1983-01-08 富士通株式会社 Magnetic disk laminated structure
JPH0250376A (en) * 1988-08-11 1990-02-20 Fujitsu Ltd Magnetic disk device
JPH0260968U (en) * 1988-10-21 1990-05-07
JPH02210681A (en) * 1989-02-10 1990-08-22 Hitachi Ltd Fixing structure for discoid plate recording medium
JP2019125412A (en) * 2017-08-31 2019-07-25 Hoya株式会社 Spacer and hard disk drive device
JP2019125413A (en) * 2017-09-29 2019-07-25 Hoya株式会社 Glass spacer and hard disk drive device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60171715U (en) * 1984-04-25 1985-11-14 三菱自動車工業株式会社 Electronically controlled suspension device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677079U (en) * 1979-11-16 1981-06-23
JPS6128311Y2 (en) * 1979-11-16 1986-08-22
JPS582794U (en) * 1981-06-29 1983-01-08 富士通株式会社 Magnetic disk laminated structure
JPH0250376A (en) * 1988-08-11 1990-02-20 Fujitsu Ltd Magnetic disk device
JPH0260968U (en) * 1988-10-21 1990-05-07
JPH02210681A (en) * 1989-02-10 1990-08-22 Hitachi Ltd Fixing structure for discoid plate recording medium
JP2019125412A (en) * 2017-08-31 2019-07-25 Hoya株式会社 Spacer and hard disk drive device
JP2019125413A (en) * 2017-09-29 2019-07-25 Hoya株式会社 Glass spacer and hard disk drive device
US11705158B2 (en) 2017-09-29 2023-07-18 Hoya Corporation Method for manufacturing ring-shaped glass spacer

Also Published As

Publication number Publication date
JPS5845112B2 (en) 1983-10-07

Similar Documents

Publication Publication Date Title
JPS5423517A (en) Floating head slider
JPS5573976A (en) Magnetic disk device
JPS53143206A (en) Magnetic disc
JPS578926A (en) Magnetic recording body
JPS53123906A (en) Magnetic disc
JPS5538660A (en) Defective sector replacement system
JPS51129201A (en) Magnetic recording medium
JPS5616938A (en) Magnetic recording medium
JPS5376803A (en) Turntable sheet
JPS55150101A (en) Signal reproducing device
JPS5635A (en) Magnetic disc
JPS563472A (en) Magnetic disk device
JPS5794970A (en) Magnetic disk device
JPS5267978A (en) Boiling-cooling type semiconductor unit
JPS522420A (en) Floating type thin film magnetic head
JPS5223916A (en) Disk playback system
JPS5248773A (en) Braking device
JPS57151862A (en) Speed detecting device for moving body
JPS56120815A (en) Clutch release bearing device
JPS51146214A (en) Gimbal of floating magnetic head
DHAWAN The effect of a rigid disc on the distribution of thermal stress in a semi-infinite solid(Rigid disk effect on thermal stress distribution in semiinfinite elastic solid under prescribed surface temperature and heat flux)
JPS5687057A (en) Electrostatic recording electrode head
JPS5381106A (en) Magnetic card and its manufacture
JPS5250223A (en) Tape cassette
JPS52119908A (en) Magnetic recording sheet