JPS57189302A - Optical magnetic recording system - Google Patents

Optical magnetic recording system

Info

Publication number
JPS57189302A
JPS57189302A JP7338881A JP7338881A JPS57189302A JP S57189302 A JPS57189302 A JP S57189302A JP 7338881 A JP7338881 A JP 7338881A JP 7338881 A JP7338881 A JP 7338881A JP S57189302 A JPS57189302 A JP S57189302A
Authority
JP
Japan
Prior art keywords
pole
light beam
inverted
magnetic
magnetic recording
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
JP7338881A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0123845B2 (enrdf_load_stackoverflow
Inventor
Tokio Tatsuta
Masao Hiyane
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 JP7338881A priority Critical patent/JPS57189302A/ja
Publication of JPS57189302A publication Critical patent/JPS57189302A/ja
Publication of JPH0123845B2 publication Critical patent/JPH0123845B2/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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
JP7338881A 1981-05-18 1981-05-18 Optical magnetic recording system Granted JPS57189302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7338881A JPS57189302A (en) 1981-05-18 1981-05-18 Optical magnetic recording system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7338881A JPS57189302A (en) 1981-05-18 1981-05-18 Optical magnetic recording system

Publications (2)

Publication Number Publication Date
JPS57189302A true JPS57189302A (en) 1982-11-20
JPH0123845B2 JPH0123845B2 (enrdf_load_stackoverflow) 1989-05-09

Family

ID=13516755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7338881A Granted JPS57189302A (en) 1981-05-18 1981-05-18 Optical magnetic recording system

Country Status (1)

Country Link
JP (1) JPS57189302A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
JPS61214228A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 情報記録方法
JPS63237243A (ja) * 1987-03-25 1988-10-03 Ricoh Co Ltd 光磁気記録方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186248A (en) * 1981-05-09 1982-11-16 Ricoh Co Ltd Vertically thermomagnetic recording and reproducing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186248A (en) * 1981-05-09 1982-11-16 Ricoh Co Ltd Vertically thermomagnetic recording and reproducing system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215008A (ja) * 1983-05-20 1984-12-04 Canon Inc 光磁気記録方法
JPS61214228A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 情報記録方法
JPS63237243A (ja) * 1987-03-25 1988-10-03 Ricoh Co Ltd 光磁気記録方法

Also Published As

Publication number Publication date
JPH0123845B2 (enrdf_load_stackoverflow) 1989-05-09

Similar Documents

Publication Publication Date Title
Roth et al. Data on low energy light ion sputtering
Ajzenberg-Selove et al. Energy levels of light nuclei A= 11–12
JPS57165292A (en) Optical information recording medium
DE3678133D1 (de) Polyaethylen naphtalatfolie fuer magnetische aufzeichnungsmedien hoher dichte.
JPS5266405A (en) Optical recording system of information recording discs
JPS5674843A (en) Photomagnetic recording medium
JPS57147128A (en) Magnetic recording medium and its manufacture
JPS57189302A (en) Optical magnetic recording system
JPS53133039A (en) Recording method
JPS5421709A (en) Thermomagnetic recording system
JPS5661032A (en) Optical magnetic recording medium
JPS5661031A (en) Optical magnetic recording medium
DE3482147D1 (de) Optisches duennfilm-aufzeichnungsmedium mit hohem kontrast.
JPS5755591A (en) Information recording method
JPS5287024A (en) Recording means for chiaroscuro image
JPS5223902A (en) Optical playback device
SU639802A1 (ru) Мостовой двухбалочный кран
JPS57189893A (en) Duplication of optical information
JPS5348704A (en) Optical signal regenerator
JPS5593537A (en) Optical recording device
JPS5680491A (en) Information recording medium and information recording method using it
JPS5255547A (en) Optical information reader
JPS6484458A (en) Magneto-optical recording and reproducing device
JPS52143001A (en) Optical regeneration method
JPS54143606A (en) Optical recorder-reproducer