JPS5564657A - Rotation braking device for magnetic disk - Google Patents

Rotation braking device for magnetic disk

Info

Publication number
JPS5564657A
JPS5564657A JP13665678A JP13665678A JPS5564657A JP S5564657 A JPS5564657 A JP S5564657A JP 13665678 A JP13665678 A JP 13665678A JP 13665678 A JP13665678 A JP 13665678A JP S5564657 A JPS5564657 A JP S5564657A
Authority
JP
Japan
Prior art keywords
magnetic disk
rotational
frequency
magnetic head
wearing
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
JP13665678A
Other languages
Japanese (ja)
Inventor
Masahiko Fujioka
Chikahisa Kawakami
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 JP13665678A priority Critical patent/JPS5564657A/en
Publication of JPS5564657A publication Critical patent/JPS5564657A/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
    • 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
    • G11B19/22—Brakes other than speed-regulating brakes

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To prevent a magnetic head from wearing by braking a motor for a magnetic disk at the same time as the landing of a contact start-stop type magnetic head, on detecting the rotational frequency of the magnetic disk lowering. CONSTITUTION:To the tip of rotary arm type actuator 18, contact start-stop type magnetic head 19 is fitted. On detecting the rotational frequency of magnetic disk 10 lowering, index mark detector 21 allows rotational-frequency decision unit 23 to send a rotational-frequency decrease report signal. Switch 24, connected between power supply 25 and electromagnetic brake 17, operates electromagnetic brake 17 in response to the generation of the rotational-frequency decrease report signal. Consequently, the magnetic head can be prevented from wearing because the braking mechanism is operated after the rotation of the magnetic disk decreases to a certain degree to minimize the wearing of the braking mechanism.
JP13665678A 1978-11-08 1978-11-08 Rotation braking device for magnetic disk Pending JPS5564657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13665678A JPS5564657A (en) 1978-11-08 1978-11-08 Rotation braking device for magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13665678A JPS5564657A (en) 1978-11-08 1978-11-08 Rotation braking device for magnetic disk

Publications (1)

Publication Number Publication Date
JPS5564657A true JPS5564657A (en) 1980-05-15

Family

ID=15180420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13665678A Pending JPS5564657A (en) 1978-11-08 1978-11-08 Rotation braking device for magnetic disk

Country Status (1)

Country Link
JP (1) JPS5564657A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142779A (en) * 1983-02-01 1984-08-16 Seiko Epson Corp Floppy disk driving device
EP0441030A2 (en) * 1990-02-06 1991-08-14 Seagate Technology International Motor brake circuit for use in a magnetic disk drive system
US5146347A (en) * 1987-05-29 1992-09-08 Pioneer Electronic Corporation Disc player control system for quickly placing disc player in command ready state

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142779A (en) * 1983-02-01 1984-08-16 Seiko Epson Corp Floppy disk driving device
US5146347A (en) * 1987-05-29 1992-09-08 Pioneer Electronic Corporation Disc player control system for quickly placing disc player in command ready state
EP0441030A2 (en) * 1990-02-06 1991-08-14 Seagate Technology International Motor brake circuit for use in a magnetic disk drive system

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