JPH026121B2 - - Google Patents
Info
- Publication number
- JPH026121B2 JPH026121B2 JP56060630A JP6063081A JPH026121B2 JP H026121 B2 JPH026121 B2 JP H026121B2 JP 56060630 A JP56060630 A JP 56060630A JP 6063081 A JP6063081 A JP 6063081A JP H026121 B2 JPH026121 B2 JP H026121B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- bias magnetic
- recording medium
- value
- bias
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 22
- 230000005415 magnetization Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 229910016629 MnBi Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
Classifications
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/1056—Switching or mechanically reversing the magnetic field generator
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
- G11B5/03—Biasing
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6063081A JPS57176505A (en) | 1981-04-23 | 1981-04-23 | Bias magnetic field applying system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6063081A JPS57176505A (en) | 1981-04-23 | 1981-04-23 | Bias magnetic field applying system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57176505A JPS57176505A (en) | 1982-10-29 |
JPH026121B2 true JPH026121B2 (sl) | 1990-02-07 |
Family
ID=13147812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6063081A Granted JPS57176505A (en) | 1981-04-23 | 1981-04-23 | Bias magnetic field applying system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57176505A (sl) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938951A (ja) * | 1982-08-27 | 1984-03-03 | Matsushita Electric Ind Co Ltd | 光学磁気記録再生装置 |
JPS5992406A (ja) * | 1982-11-17 | 1984-05-28 | Matsushita Electric Ind Co Ltd | 光磁気記録装置 |
JPS59117703A (ja) * | 1982-12-25 | 1984-07-07 | Fujitsu Ltd | 光磁気デイスク装置 |
JPS6324704U (sl) * | 1986-07-31 | 1988-02-18 | ||
JPS6397259U (sl) * | 1986-12-15 | 1988-06-23 | ||
JP2619373B2 (ja) * | 1986-12-24 | 1997-06-11 | 株式会社日立製作所 | 光磁気ディスク装置 |
US5022017A (en) * | 1988-04-29 | 1991-06-04 | Laser Magnetic Storage International Company | Magneto optic data recording system with variable field strength, actuator therefor and method of providing |
JPH04232602A (ja) * | 1990-09-21 | 1992-08-20 | Sundstrand Data Control Inc | 磁気光ディスク駆動装置の気密封止された磁気バイアス装置 |
JP2889427B2 (ja) * | 1992-04-03 | 1999-05-10 | シャープ株式会社 | 熱磁気記録装置 |
JPWO2004051640A1 (ja) * | 2002-11-29 | 2006-04-06 | 富士通株式会社 | 光磁気記憶媒体の再生方法およびその方法を用いた光磁気記憶装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133503A (en) * | 1981-02-10 | 1982-08-18 | Sharp Corp | Optical and magnetic recorder and reproducer |
-
1981
- 1981-04-23 JP JP6063081A patent/JPS57176505A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57133503A (en) * | 1981-02-10 | 1982-08-18 | Sharp Corp | Optical and magnetic recorder and reproducer |
Also Published As
Publication number | Publication date |
---|---|
JPS57176505A (en) | 1982-10-29 |
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