JPH0232692B2 - - Google Patents

Info

Publication number
JPH0232692B2
JPH0232692B2 JP58025495A JP2549583A JPH0232692B2 JP H0232692 B2 JPH0232692 B2 JP H0232692B2 JP 58025495 A JP58025495 A JP 58025495A JP 2549583 A JP2549583 A JP 2549583A JP H0232692 B2 JPH0232692 B2 JP H0232692B2
Authority
JP
Japan
Prior art keywords
recording medium
magnetic field
recording
information
light beam
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
JP58025495A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59152503A (ja
Inventor
Hiroyasu Nose
Nobutoshi Mizusawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP58025495A priority Critical patent/JPS59152503A/ja
Publication of JPS59152503A publication Critical patent/JPS59152503A/ja
Publication of JPH0232692B2 publication Critical patent/JPH0232692B2/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
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
  • Optical Head (AREA)
JP58025495A 1983-02-19 1983-02-19 光磁気記録装置 Granted JPS59152503A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58025495A JPS59152503A (ja) 1983-02-19 1983-02-19 光磁気記録装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58025495A JPS59152503A (ja) 1983-02-19 1983-02-19 光磁気記録装置

Publications (2)

Publication Number Publication Date
JPS59152503A JPS59152503A (ja) 1984-08-31
JPH0232692B2 true JPH0232692B2 (ko) 1990-07-23

Family

ID=12167637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58025495A Granted JPS59152503A (ja) 1983-02-19 1983-02-19 光磁気記録装置

Country Status (1)

Country Link
JP (1) JPS59152503A (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1208361A (en) * 1983-01-25 1986-07-22 Yoshikazu Fujii Optical focus position control in optical disc apparatus
US4658390A (en) * 1983-04-18 1987-04-14 Sharp Kabushiki Kaisha Optical focus position control in an optical memory system
JPH065585B2 (ja) * 1984-02-15 1994-01-19 株式会社日立製作所 光磁気記憶装置
JPS613504U (ja) * 1984-06-14 1986-01-10 ソニー株式会社 光磁気記録装置
JPS6417201A (en) * 1987-07-09 1989-01-20 Nec Corp Electromagnet for impressing magnetic field for magneto-optical disk
JPH01178104A (ja) * 1988-01-05 1989-07-14 Nec Corp 光磁気ディスク用磁界印加電磁石
JPH01178106A (ja) * 1988-01-06 1989-07-14 Nec Corp 光磁気ディスク用磁界印加装置
JPH01178107A (ja) * 1988-01-08 1989-07-14 Nec Corp 光磁気ディスク用磁界印加装置
US5022018A (en) * 1989-02-16 1991-06-04 Minnesota Mining And Manufacturing Company System for applying a perpendicular magnetic field to the illuminated side of a magneto-optic medium
JPH0332731U (ko) * 1989-08-08 1991-03-29

Also Published As

Publication number Publication date
JPS59152503A (ja) 1984-08-31

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