JPS6421735A - Magneto-optical disk device - Google Patents

Magneto-optical disk device

Info

Publication number
JPS6421735A
JPS6421735A JP17707987A JP17707987A JPS6421735A JP S6421735 A JPS6421735 A JP S6421735A JP 17707987 A JP17707987 A JP 17707987A JP 17707987 A JP17707987 A JP 17707987A JP S6421735 A JPS6421735 A JP S6421735A
Authority
JP
Japan
Prior art keywords
pole
permanent magnet
recording
erasing
thinning
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
JP17707987A
Other languages
Japanese (ja)
Other versions
JPH0760536B2 (en
Inventor
Keiji Uehara
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.)
Teac Corp
Original Assignee
Teac Corp
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 Teac Corp filed Critical Teac Corp
Priority to JP62177079A priority Critical patent/JPH0760536B2/en
Publication of JPS6421735A publication Critical patent/JPS6421735A/en
Publication of JPH0760536B2 publication Critical patent/JPH0760536B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To cope with the thinning of a device and to secure a magnetic field for a permanent magnet by forming an S pole and N pole on opposing same planes, displacing a permanent magnet in the direction parallel to a recording face and providing it so as to shift to a recording mode position or erasing mode position. CONSTITUTION:An S pole and N pole are formed so as to be magnetized on the same plane of the permanent magnet 5 opposed to a disk 4 and the permanent magnet 5 is provided so as to shift a recording mode and erasing mode by sliding it in the parallel direction to the recording face of the disk 4. The smaller shifting space in the height direction of the permanent magnet 5 will thus do, the thinning of a device can be coped with and the magnetizing area of an erasing pole 5b is made larger than that of a recording pole 5a, hence the information recorded on a recording face can surely be erased.
JP62177079A 1987-07-17 1987-07-17 Magneto-optical disk device Expired - Lifetime JPH0760536B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62177079A JPH0760536B2 (en) 1987-07-17 1987-07-17 Magneto-optical disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62177079A JPH0760536B2 (en) 1987-07-17 1987-07-17 Magneto-optical disk device

Publications (2)

Publication Number Publication Date
JPS6421735A true JPS6421735A (en) 1989-01-25
JPH0760536B2 JPH0760536B2 (en) 1995-06-28

Family

ID=16024758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62177079A Expired - Lifetime JPH0760536B2 (en) 1987-07-17 1987-07-17 Magneto-optical disk device

Country Status (1)

Country Link
JP (1) JPH0760536B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002538596A (en) * 1999-03-05 2002-11-12 エテック システムズ インコーポレイテッド Schottky and field emission electron guns with enhanced angular strength

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137201A (en) * 1984-12-07 1986-06-24 Olympus Optical Co Ltd Impressing device of bias magnetic field
JPS61121523U (en) * 1985-01-17 1986-07-31
JPS6229607U (en) * 1985-08-07 1987-02-23

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137201A (en) * 1984-12-07 1986-06-24 Olympus Optical Co Ltd Impressing device of bias magnetic field
JPS61121523U (en) * 1985-01-17 1986-07-31
JPS6229607U (en) * 1985-08-07 1987-02-23

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002538596A (en) * 1999-03-05 2002-11-12 エテック システムズ インコーポレイテッド Schottky and field emission electron guns with enhanced angular strength

Also Published As

Publication number Publication date
JPH0760536B2 (en) 1995-06-28

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