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
Application number
JP56060630A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57176505A (en
Inventor
Tsuneo Yanagida
Kiichi Kato
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP6063081A priority Critical patent/JPS57176505A/ja
Publication of JPS57176505A publication Critical patent/JPS57176505A/ja
Publication of JPH026121B2 publication Critical patent/JPH026121B2/ja
Granted legal-status Critical Current

Links

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

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
JP6063081A 1981-04-23 1981-04-23 Bias magnetic field applying system Granted JPS57176505A (en)

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 (cs) 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 (cs)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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 (cs) * 1986-07-31 1988-02-18
JPS6397259U (cs) * 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
WO2004051640A1 (ja) * 2002-11-29 2004-06-17 Fujitsu Limited 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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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