JPS57186248A - Vertically thermomagnetic recording and reproducing system - Google Patents

Vertically thermomagnetic recording and reproducing system

Info

Publication number
JPS57186248A
JPS57186248A JP6988581A JP6988581A JPS57186248A JP S57186248 A JPS57186248 A JP S57186248A JP 6988581 A JP6988581 A JP 6988581A JP 6988581 A JP6988581 A JP 6988581A JP S57186248 A JPS57186248 A JP S57186248A
Authority
JP
Japan
Prior art keywords
medium
temperature
information
irradiated
moves
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
JP6988581A
Other languages
English (en)
Other versions
JPH0325854B2 (ja
Inventor
Motoharu Tanaka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6988581A priority Critical patent/JPS57186248A/ja
Publication of JPS57186248A publication Critical patent/JPS57186248A/ja
Publication of JPH0325854B2 publication Critical patent/JPH0325854B2/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
    • G11B11/10504—Recording
    • G11B11/10506—Recording by modulating only the light beam of the transducer
    • 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)
JP6988581A 1981-05-09 1981-05-09 Vertically thermomagnetic recording and reproducing system Granted JPS57186248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6988581A JPS57186248A (en) 1981-05-09 1981-05-09 Vertically thermomagnetic recording and reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6988581A JPS57186248A (en) 1981-05-09 1981-05-09 Vertically thermomagnetic recording and reproducing system

Publications (2)

Publication Number Publication Date
JPS57186248A true JPS57186248A (en) 1982-11-16
JPH0325854B2 JPH0325854B2 (ja) 1991-04-09

Family

ID=13415644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6988581A Granted JPS57186248A (en) 1981-05-09 1981-05-09 Vertically thermomagnetic recording and reproducing system

Country Status (1)

Country Link
JP (1) JPS57186248A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189302A (en) * 1981-05-18 1982-11-20 Fujitsu Ltd Optical magnetic recording system
WO1991007749A1 (en) * 1989-11-16 1991-05-30 Sony Corporation Optical pickup device and magnetooptical reproducing apparatus
US5161134A (en) * 1989-06-29 1992-11-03 Digital Equipment Corporation Method for increasing linear bit density in magneto-optical storage media
US5555236A (en) * 1990-10-19 1996-09-10 Canon Kabushiki Kaisha Magneto-optical recording method of erasing a portion of a first recording domain to form a crescent-shaped second recording domain

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100498310B1 (ko) 2002-12-24 2005-07-01 엘지전자 주식회사 브롬화주석을 이용한 무전극 조명 시스템

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189302A (en) * 1981-05-18 1982-11-20 Fujitsu Ltd Optical magnetic recording system
JPH0123845B2 (ja) * 1981-05-18 1989-05-09 Fujitsu Ltd
US5161134A (en) * 1989-06-29 1992-11-03 Digital Equipment Corporation Method for increasing linear bit density in magneto-optical storage media
WO1991007749A1 (en) * 1989-11-16 1991-05-30 Sony Corporation Optical pickup device and magnetooptical reproducing apparatus
US5555236A (en) * 1990-10-19 1996-09-10 Canon Kabushiki Kaisha Magneto-optical recording method of erasing a portion of a first recording domain to form a crescent-shaped second recording domain

Also Published As

Publication number Publication date
JPH0325854B2 (ja) 1991-04-09

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