JPS61250801A - 光磁気デイスク装置用外部磁界反転装置 - Google Patents

光磁気デイスク装置用外部磁界反転装置

Info

Publication number
JPS61250801A
JPS61250801A JP60091992A JP9199285A JPS61250801A JP S61250801 A JPS61250801 A JP S61250801A JP 60091992 A JP60091992 A JP 60091992A JP 9199285 A JP9199285 A JP 9199285A JP S61250801 A JPS61250801 A JP S61250801A
Authority
JP
Japan
Prior art keywords
permanent magnet
magnetic field
coil
external magnetic
generated
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
JP60091992A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0560162B2 (enExample
Inventor
Mine Naito
峰 内藤
Susumu Tosaka
進 登坂
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP60091992A priority Critical patent/JPS61250801A/ja
Priority to US07/012,458 priority patent/US4748606A/en
Priority to EP86902518A priority patent/EP0222916B1/en
Priority to EP92100047A priority patent/EP0485359B1/en
Priority to KR1019860700953A priority patent/KR940005552B1/ko
Priority to DE8686902518T priority patent/DE3687694T2/de
Priority to DE3650686T priority patent/DE3650686T2/de
Priority to PCT/JP1986/000216 priority patent/WO1986006534A1/ja
Publication of JPS61250801A publication Critical patent/JPS61250801A/ja
Publication of JPH0560162B2 publication Critical patent/JPH0560162B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
JP60091992A 1985-04-29 1985-04-29 光磁気デイスク装置用外部磁界反転装置 Granted JPS61250801A (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP60091992A JPS61250801A (ja) 1985-04-29 1985-04-29 光磁気デイスク装置用外部磁界反転装置
US07/012,458 US4748606A (en) 1985-04-29 1986-04-28 External magnetic field inverting apparatus for magneto-optical disc apparatus
EP86902518A EP0222916B1 (en) 1985-04-29 1986-04-28 External magnetic field reversing apparatus for photomagnetic disks
EP92100047A EP0485359B1 (en) 1985-04-29 1986-04-28 An external magnetic field inverting apparatus for a magneto-optical disc apparatus
KR1019860700953A KR940005552B1 (ko) 1985-04-29 1986-04-28 광자기 디스크장치용 외부자계 반전장치
DE8686902518T DE3687694T2 (de) 1985-04-29 1986-04-28 Externes magnetfeld-umpolungsgeraet fuer fotomagnetische platten.
DE3650686T DE3650686T2 (de) 1985-04-29 1986-04-28 Externes Magnetfeld-Umpolungsgerät für magneto-optisches Plattengerät
PCT/JP1986/000216 WO1986006534A1 (fr) 1985-04-29 1986-04-28 Appareil d'inversion du champ mnagnetique externe pour disques photomagnetiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60091992A JPS61250801A (ja) 1985-04-29 1985-04-29 光磁気デイスク装置用外部磁界反転装置

Publications (2)

Publication Number Publication Date
JPS61250801A true JPS61250801A (ja) 1986-11-07
JPH0560162B2 JPH0560162B2 (enExample) 1993-09-01

Family

ID=14041937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60091992A Granted JPS61250801A (ja) 1985-04-29 1985-04-29 光磁気デイスク装置用外部磁界反転装置

Country Status (1)

Country Link
JP (1) JPS61250801A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209751A (ja) * 1986-03-10 1987-09-14 Matsushita Electric Ind Co Ltd 光磁気記録装置
JPS63279401A (ja) * 1987-05-08 1988-11-16 Sharp Corp 光磁気ディスク装置
JPS63317903A (ja) * 1987-06-22 1988-12-26 Mitsubishi Electric Corp バイアス磁界印加装置
JPH0268301U (enExample) * 1988-11-10 1990-05-23
US4972337A (en) * 1986-12-11 1990-11-20 Sony Corporation Device for controlling rotation of a magnet used in a magneto-optical recording system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293264B (en) * 1994-09-01 1998-05-27 Asahi Optical Co Ltd Magneto-optical disk apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209751A (ja) * 1986-03-10 1987-09-14 Matsushita Electric Ind Co Ltd 光磁気記録装置
US4972337A (en) * 1986-12-11 1990-11-20 Sony Corporation Device for controlling rotation of a magnet used in a magneto-optical recording system
JPS63279401A (ja) * 1987-05-08 1988-11-16 Sharp Corp 光磁気ディスク装置
JPS63317903A (ja) * 1987-06-22 1988-12-26 Mitsubishi Electric Corp バイアス磁界印加装置
JPH0268301U (enExample) * 1988-11-10 1990-05-23

Also Published As

Publication number Publication date
JPH0560162B2 (enExample) 1993-09-01

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees