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
Links
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 75
- 230000003287 optical effect Effects 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
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)
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)
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 |
-
1985
- 1985-04-29 JP JP60091992A patent/JPS61250801A/ja active Granted
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR940005552B1 (ko) | 광자기 디스크장치용 외부자계 반전장치 | |
JPH0560162B2 (ko) | ||
US5563871A (en) | Rotary actuator with a magnetic bias bearing configuration for rotating an optical element in an optical data storage system | |
US4731778A (en) | Electro-magnetic drive unit comprising a pivotable armature | |
US5243919A (en) | Magnetic levitation actuator | |
US5617379A (en) | Magneto-optical disk apparatus utilizing a leakage magnetic field from a magnetic driving mechanism | |
JPH06101082B2 (ja) | 光磁気デイスク装置用外部磁界反転装置 | |
JP2807352B2 (ja) | バイアス磁界印加装置 | |
JP3504981B2 (ja) | 光磁気ディスク装置 | |
JP3504980B2 (ja) | 光磁気ディスク装置 | |
JP2878752B2 (ja) | 磁界発生装置 | |
JP2000030271A (ja) | 光学ピックアップ装置 | |
JPH052792A (ja) | 光磁気記録用バイアス磁界発生装置 | |
JPH05266402A (ja) | 光磁気ディスク装置 | |
JPS61104340A (ja) | 光スポツト制御装置 | |
JPS62262203A (ja) | 磁気バイアス発生装置 | |
JPH0233734A (ja) | プリズムアクチュエータ | |
JPS63253847A (ja) | リニア磁気エンコ−ダを有する円弧リニアモ−タ | |
JPH04341938A (ja) | 光学式記録再生装置の精密角度変位機構 | |
JPH04245001A (ja) | 磁界発生装置 | |
JPH0630901U (ja) | 光磁気記録媒体ドライブ装置 | |
JPH0319102A (ja) | 光磁気記録用バイアス磁界発生装置 | |
JPH01182946A (ja) | 光学的情報記録再生装置 | |
JPH064926A (ja) | 光磁気ディスク装置 | |
JPS62209751A (ja) | 光磁気記録装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |