JPS59119507A - 光磁気記録装置 - Google Patents

光磁気記録装置

Info

Publication number
JPS59119507A
JPS59119507A JP22840782A JP22840782A JPS59119507A JP S59119507 A JPS59119507 A JP S59119507A JP 22840782 A JP22840782 A JP 22840782A JP 22840782 A JP22840782 A JP 22840782A JP S59119507 A JPS59119507 A JP S59119507A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic field
optical head
recording medium
pole
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
JP22840782A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0520821B2 (enrdf_load_stackoverflow
Inventor
Junichi Ichihara
市原　順一
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP22840782A priority Critical patent/JPS59119507A/ja
Publication of JPS59119507A publication Critical patent/JPS59119507A/ja
Publication of JPH0520821B2 publication Critical patent/JPH0520821B2/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
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)
JP22840782A 1982-12-27 1982-12-27 光磁気記録装置 Granted JPS59119507A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22840782A JPS59119507A (ja) 1982-12-27 1982-12-27 光磁気記録装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22840782A JPS59119507A (ja) 1982-12-27 1982-12-27 光磁気記録装置

Publications (2)

Publication Number Publication Date
JPS59119507A true JPS59119507A (ja) 1984-07-10
JPH0520821B2 JPH0520821B2 (enrdf_load_stackoverflow) 1993-03-22

Family

ID=16875979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22840782A Granted JPS59119507A (ja) 1982-12-27 1982-12-27 光磁気記録装置

Country Status (1)

Country Link
JP (1) JPS59119507A (enrdf_load_stackoverflow)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6246450A (ja) * 1985-08-22 1987-02-28 Matsushita Electric Ind Co Ltd 光磁気記録再生装置
JPS6262453A (ja) * 1985-09-13 1987-03-19 Canon Inc 光磁気情報装置
JPS6265203A (ja) * 1985-09-18 1987-03-24 Canon Inc 補助磁界印加装置
JPS62119762A (ja) * 1985-11-20 1987-06-01 Hitachi Ltd 光磁気デイスク装置
JPS6285930U (enrdf_load_stackoverflow) * 1985-11-19 1987-06-01
US4701894A (en) * 1986-03-28 1987-10-20 Rca Corporation Magnetic biasing apparatus for magneto-optic recording including a magnetic circuit
JPS6346642A (ja) * 1986-08-13 1988-02-27 Canon Inc 光磁気記録装置
JPS6353703A (ja) * 1986-08-22 1988-03-08 Sony Corp 高周波変調磁界発生装置
JPS6353701A (ja) * 1986-08-22 1988-03-08 Sony Corp 高周波変調磁界発生装置
JPS6356836A (ja) * 1986-08-27 1988-03-11 Canon Inc 光磁気情報記録装置
US4750159A (en) * 1985-10-02 1988-06-07 Olympus Optical Co., Ltd. Apparatus for generating magnetic field in a magneto-optic recording/reproducing system
US4796241A (en) * 1986-01-23 1989-01-03 Sony Corporation Device for producing a high frequency modulation magnetic field used in magneto-optical recording
US4825428A (en) * 1985-02-20 1989-04-25 Nec Corporation Optomagnetic recording, reading and erasing method and implementing apparatus which permits overwriting of previously recorded information
US4849952A (en) * 1985-09-18 1989-07-18 Canon Kabushiki Kaisha Magnetooptical information recording apparatus having intensified magnetic flux applying means
JPH02156450A (ja) * 1987-12-08 1990-06-15 Canon Inc 光磁気記録装置
US4959820A (en) * 1986-04-22 1990-09-25 Sony Corporation Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field
US4984225A (en) * 1987-03-31 1991-01-08 Kabushiki Kaisha Toshiba System for applying magnetic field to opto-magnetic memory
US5140568A (en) * 1988-08-12 1992-08-18 Olympus Optical Co., Ltd. Photomagnetic recording and erasing apparatus having magnetic field generating device including a coil and a recording media facing member which extends beyond the coil
US5986976A (en) * 1992-08-28 1999-11-16 Canon Kabushiki Kaisha Magnetooptical recording head for a recording apparatus including a laminated core having a plurality of magnetic thin films sandwiching insulating films therebetween
JP2021136453A (ja) * 2020-02-21 2021-09-13 株式会社東栄科学産業 電磁石、磁場印加システム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183605A (en) * 1981-05-08 1982-11-12 Ricoh Co Ltd Vertical magnetic recording and reproducing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57183605A (en) * 1981-05-08 1982-11-12 Ricoh Co Ltd Vertical magnetic recording and reproducing system

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825428A (en) * 1985-02-20 1989-04-25 Nec Corporation Optomagnetic recording, reading and erasing method and implementing apparatus which permits overwriting of previously recorded information
JPS6246450A (ja) * 1985-08-22 1987-02-28 Matsushita Electric Ind Co Ltd 光磁気記録再生装置
JPS6262453A (ja) * 1985-09-13 1987-03-19 Canon Inc 光磁気情報装置
JPS6265203A (ja) * 1985-09-18 1987-03-24 Canon Inc 補助磁界印加装置
US4849952A (en) * 1985-09-18 1989-07-18 Canon Kabushiki Kaisha Magnetooptical information recording apparatus having intensified magnetic flux applying means
US4750159A (en) * 1985-10-02 1988-06-07 Olympus Optical Co., Ltd. Apparatus for generating magnetic field in a magneto-optic recording/reproducing system
JPS6285930U (enrdf_load_stackoverflow) * 1985-11-19 1987-06-01
JPS62119762A (ja) * 1985-11-20 1987-06-01 Hitachi Ltd 光磁気デイスク装置
US4803674A (en) * 1985-11-20 1989-02-07 Hitachi, Ltd. Magneto-optical recorder with small-sized, low-powered electromagnetic coil
US4796241A (en) * 1986-01-23 1989-01-03 Sony Corporation Device for producing a high frequency modulation magnetic field used in magneto-optical recording
US4701894A (en) * 1986-03-28 1987-10-20 Rca Corporation Magnetic biasing apparatus for magneto-optic recording including a magnetic circuit
US4959820A (en) * 1986-04-22 1990-09-25 Sony Corporation Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field
JPS6346642A (ja) * 1986-08-13 1988-02-27 Canon Inc 光磁気記録装置
JPS6353701A (ja) * 1986-08-22 1988-03-08 Sony Corp 高周波変調磁界発生装置
JPS6353703A (ja) * 1986-08-22 1988-03-08 Sony Corp 高周波変調磁界発生装置
JPS6356836A (ja) * 1986-08-27 1988-03-11 Canon Inc 光磁気情報記録装置
US4984225A (en) * 1987-03-31 1991-01-08 Kabushiki Kaisha Toshiba System for applying magnetic field to opto-magnetic memory
JPH02156450A (ja) * 1987-12-08 1990-06-15 Canon Inc 光磁気記録装置
US5140568A (en) * 1988-08-12 1992-08-18 Olympus Optical Co., Ltd. Photomagnetic recording and erasing apparatus having magnetic field generating device including a coil and a recording media facing member which extends beyond the coil
US5986976A (en) * 1992-08-28 1999-11-16 Canon Kabushiki Kaisha Magnetooptical recording head for a recording apparatus including a laminated core having a plurality of magnetic thin films sandwiching insulating films therebetween
JP2021136453A (ja) * 2020-02-21 2021-09-13 株式会社東栄科学産業 電磁石、磁場印加システム

Also Published As

Publication number Publication date
JPH0520821B2 (enrdf_load_stackoverflow) 1993-03-22

Similar Documents

Publication Publication Date Title
JPS59119507A (ja) 光磁気記録装置
JPH065585B2 (ja) 光磁気記憶装置
JPH0633525Y2 (ja) 光磁気デイスク装置の磁界印加機構
JPS62119762A (ja) 光磁気デイスク装置
JPH0232692B2 (enrdf_load_stackoverflow)
JPS61192001A (ja) バイアス磁界発生装置
JPS6218637A (ja) 光磁気記録再生装置
JPH0418379B2 (enrdf_load_stackoverflow)
JPS6010401A (ja) 光磁気デイスク装置
JPH06195792A (ja) 光磁気ディスク装置
JPS61278058A (ja) 光磁気記録再生装置
JPH03113756A (ja) 光磁気記録再生ヘッド
JPH0413773Y2 (enrdf_load_stackoverflow)
JPS61284845A (ja) 光磁気記録再生装置
JPH034980Y2 (enrdf_load_stackoverflow)
JPH02158942A (ja) 光磁気ヘッド
JPH08235661A (ja) 光磁気記録装置に用いられる光ピックアップ装置
JPS63138546A (ja) 光磁気記録装置
JPS6233351A (ja) 光磁気記録再生装置
JPS63217547A (ja) 光磁気情報記録装置
JPS61292247A (ja) 情報記録装置
JPH0512779B2 (enrdf_load_stackoverflow)
JPH0616322B2 (ja) バイアス磁界発生装置
JPS61292250A (ja) 情報記録装置
JPS63244329A (ja) 対物レンズ駆動装置