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JPS5216208A - Information recorder - Google Patents

Information recorder

Info

Publication number
JPS5216208A
JPS5216208A JP9236475A JP9236475A JPS5216208A JP S5216208 A JPS5216208 A JP S5216208A JP 9236475 A JP9236475 A JP 9236475A JP 9236475 A JP9236475 A JP 9236475A JP S5216208 A JPS5216208 A JP S5216208A
Authority
JP
Japan
Prior art keywords
information recorder
lasser
unvarying
beams
signals
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.)
Pending
Application number
JP9236475A
Other languages
Japanese (ja)
Inventor
Hiroshi Tottori
Fumihiko Isogai
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9236475A priority Critical patent/JPS5216208A/en
Publication of JPS5216208A publication Critical patent/JPS5216208A/en
Pending 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

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To make the size of a record dot pattern unvarying when signals are recorded thermomagnetically on a magnetic film by lasser beams.
JP9236475A 1975-07-29 1975-07-29 Information recorder Pending JPS5216208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9236475A JPS5216208A (en) 1975-07-29 1975-07-29 Information recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9236475A JPS5216208A (en) 1975-07-29 1975-07-29 Information recorder

Publications (1)

Publication Number Publication Date
JPS5216208A true JPS5216208A (en) 1977-02-07

Family

ID=14052346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9236475A Pending JPS5216208A (en) 1975-07-29 1975-07-29 Information recorder

Country Status (1)

Country Link
JP (1) JPS5216208A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140605A (en) * 1983-01-31 1984-08-13 Canon Inc Erasing system of photomagnetic recorder
JPS59140604A (en) * 1983-01-31 1984-08-13 Canon Inc Recording system of photomagnetic recorder
EP0220023A2 (en) * 1985-10-08 1987-04-29 Sharp Kabushiki Kaisha Optical magnetic memory device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837851A (en) * 1971-09-17 1973-06-04
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837851A (en) * 1971-09-17 1973-06-04
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140605A (en) * 1983-01-31 1984-08-13 Canon Inc Erasing system of photomagnetic recorder
JPS59140604A (en) * 1983-01-31 1984-08-13 Canon Inc Recording system of photomagnetic recorder
JPH053043B2 (en) * 1983-01-31 1993-01-13 Canon Kk
JPH053044B2 (en) * 1983-01-31 1993-01-13 Canon Kk
EP0220023A2 (en) * 1985-10-08 1987-04-29 Sharp Kabushiki Kaisha Optical magnetic memory device

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