JPH0560162B2 - - Google Patents

Info

Publication number
JPH0560162B2
JPH0560162B2 JP9199285A JP9199285A JPH0560162B2 JP H0560162 B2 JPH0560162 B2 JP H0560162B2 JP 9199285 A JP9199285 A JP 9199285A JP 9199285 A JP9199285 A JP 9199285A JP H0560162 B2 JPH0560162 B2 JP H0560162B2
Authority
JP
Japan
Prior art keywords
magnetic field
permanent magnet
coil
external magnetic
disk
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.)
Expired - Fee Related
Application number
JP9199285A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61250801A (ja
Inventor
Mine Naito
Susumu Tosaka
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 PCT/JP1986/000216 priority patent/WO1986006534A1/ja
Priority to KR1019860700953A priority patent/KR940005552B1/ko
Priority to DE8686902518T priority patent/DE3687694T2/de
Priority to DE3650686T priority patent/DE3650686T2/de
Priority to EP92100047A priority patent/EP0485359B1/en
Priority to US07/012,458 priority patent/US4748606A/en
Priority to EP86902518A priority patent/EP0222916B1/en
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
PCT/JP1986/000216 WO1986006534A1 (en) 1985-04-29 1986-04-28 External magnetic field reversing apparatus for photomagnetic disks
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
EP92100047A EP0485359B1 (en) 1985-04-29 1986-04-28 An external magnetic field inverting apparatus for a magneto-optical disc apparatus
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

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 JPS61250801A (ja) 1986-11-07
JPH0560162B2 true JPH0560162B2 (ko) 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 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532209B4 (de) * 1994-09-01 2005-05-04 Pentax Corp. Magnetooptische Plattenvorrichtung

Families Citing this family (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
JPH0727606B2 (ja) * 1986-12-11 1995-03-29 ソニー株式会社 記録型光デイスクに対する磁界印加装置
JPH0661122B2 (ja) * 1987-05-08 1994-08-10 シャープ株式会社 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
JPH0633526Y2 (ja) * 1988-11-10 1994-08-31 ティアツク株式会社 光磁気ディスク装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532209B4 (de) * 1994-09-01 2005-05-04 Pentax Corp. Magnetooptische Plattenvorrichtung

Also Published As

Publication number Publication date
JPS61250801A (ja) 1986-11-07

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Legal Events

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