ES2042522T3 - Material de registro y procedimiento para el registro de datos sobre el material de registro. - Google Patents

Material de registro y procedimiento para el registro de datos sobre el material de registro.

Info

Publication number
ES2042522T3
ES2042522T3 ES87109582T ES87109582T ES2042522T3 ES 2042522 T3 ES2042522 T3 ES 2042522T3 ES 87109582 T ES87109582 T ES 87109582T ES 87109582 T ES87109582 T ES 87109582T ES 2042522 T3 ES2042522 T3 ES 2042522T3
Authority
ES
Spain
Prior art keywords
magneto
optic
layer
registration
magnetic
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
ES87109582T
Other languages
English (en)
Inventor
Boris J Muchnik
Fred W Spong
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of ES2042522T3 publication Critical patent/ES2042522T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
    • G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"
    • 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
    • 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
    • G11B11/10539—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using electromagnetic beams, e.g. polarised light
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • G11B13/045—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties combined recording by magnetic and optic means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Electronic Switches (AREA)

Abstract

UN MATERIAL MAGNETICO DE REGISTRO MAGNETO - OPTICO (13; 13'') SE COMPONE DE UNA CAPA MAGNETO - OPTICO (2) Y UNA CAPA DE REGISTRO MAGNETICA (4; 4'') EN FORMA DE DISCO. EN EL PROCEDIMIENTO PARA EGISTRO DE DATOS SE POSICIONA LA CAPA MAGNETO - OPTICA EN EL INTERIOR DE CAMPOS DE BANDAS MAGNETICAS (10; 10'') DE LA CAPA DE REGISTRO MAGNETICA (4; 4''). LA CAPA MAGNETO - OPTICA (2) SE RADIA MEDIANTE UN RAYO LASER (9) CONTINUAMENTE POR UNA CAPA TRANSPARENTE PORTADORA (1) QUE DISMINUYE LOCALMENTE LA FUERZA COERCITIVA DE LA CAPA MAGNETO - OPTICA (2), DE MODO QUE LA CAPA MAGNETO - OPTICA (2) SE DIRIGE EN ZONAS LOCALES (11) BAJO LA INFLUENCIA DEL CAMPO DE BANDAS MAGNETICAS (10; 10'') SE REGISTRA MEDIANTE UNA CABEZA MAGNETICA (4; 4''). LA INFORMACION REGISTRADA EN LA CAPA MAGNETO - OPTICA (2) SE LEE CON UN RAYO LASER DE MENOR EFECTO QUE EL RAYO LASER DE ESCRITURA POR UTILIZACION DEL EFECTO KERR.
ES87109582T 1985-10-28 1987-07-03 Material de registro y procedimiento para el registro de datos sobre el material de registro. Expired - Lifetime ES2042522T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/792,148 US4694358A (en) 1985-10-28 1985-10-28 Magneto-optic recording structure and method
CA000541546A CA1320269C (en) 1985-10-28 1987-07-08 Magneto-optic recording structure and method

Publications (1)

Publication Number Publication Date
ES2042522T3 true ES2042522T3 (es) 1993-12-16

Family

ID=25671409

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87109582T Expired - Lifetime ES2042522T3 (es) 1985-10-28 1987-07-03 Material de registro y procedimiento para el registro de datos sobre el material de registro.

Country Status (7)

Country Link
US (1) US4694358A (es)
EP (1) EP0298137B1 (es)
AT (1) ATE91190T1 (es)
AU (1) AU604486B2 (es)
CA (1) CA1320269C (es)
DE (1) DE3786399D1 (es)
ES (1) ES2042522T3 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61139959A (ja) * 1984-12-12 1986-06-27 Canon Inc 磁気記録の再生方法
JPH0695404B2 (ja) * 1985-12-27 1994-11-24 ソニー株式会社 光磁気記録方法
US5051970A (en) * 1987-05-08 1991-09-24 Nippon Telegraph And Telephone Corporation Magneto-optic recording system with overwrite capability
US5153868A (en) * 1988-02-26 1992-10-06 Sumitomo Metal Industries, Ltd. Magneto-optic recording and regenerating device
US5101385A (en) * 1988-03-14 1992-03-31 Bernoulli Optical Systems Company Magneto-optical information storage system for flexible media having maximum overwrite efficiency
DE3811374A1 (de) * 1988-04-05 1989-10-19 Siemens Ag Datenspeichersystem und verfahren zu seiner herstellung
US5237548A (en) * 1988-06-01 1993-08-17 Hoechst Aktiengesellschaft Magneto-optic recording structure and method
US4977540A (en) * 1988-06-22 1990-12-11 The Regents Of The University Of California Spin glass type associative processor system
US4972396A (en) * 1988-10-24 1990-11-20 Honeywell Inc. Multiple independently positionable recording-reading head disk system
DE3904611A1 (de) * 1989-02-16 1990-08-23 Hoechst Ag Magnetooptische schicht und verfahren zu ihrer herstellung
JP2884617B2 (ja) * 1989-09-08 1999-04-19 ソニー株式会社 光磁気記録再生方法
CA2043995C (en) * 1990-06-13 1997-06-24 Kenji Ohta Magneto-optical recording/reproducing device
JP3130929B2 (ja) * 1990-08-10 2001-01-31 ミネソタ マイニング アンド マニュファクチャリング カンパニー 高い記憶密度と直接重ね書きケイパビリティを有する熱磁気記録システム
DE4029874A1 (de) * 1990-09-21 1992-03-26 Basf Ag Magnetooptische datenplatte mit pt-haltiger leseschicht
EP0523944A3 (en) * 1991-07-16 1994-02-16 Canon Kk Magneto optical recording medium and method
DE4137427C1 (es) * 1991-11-14 1993-01-14 Hoechst Ag, 6230 Frankfurt, De
JPH08106663A (ja) * 1994-08-10 1996-04-23 Tdk Corp 光磁気ディスク

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2950971A (en) * 1957-12-17 1960-08-30 Lewin George Multiple sound tracks
US3239841A (en) * 1962-10-16 1966-03-08 Gen Electric Medium for combined thermoplastic and magnetic recording
US3680065A (en) * 1970-05-25 1972-07-25 Ibm Nonvolatile magneto-optical memory element and a method of writing thereon
US3761645A (en) * 1971-03-02 1973-09-25 Rca Corp Apparatus and process for thermomagnetically replicating magnetic recordings using a scanning beam of radiant energy
JPS57105827A (en) * 1980-12-23 1982-07-01 Olympus Optical Co Ltd Manufacture of recorded medium
US4794560A (en) * 1985-09-30 1988-12-27 International Business Machines Corporation Eraseable self biasing thermal magneto-optic medium

Also Published As

Publication number Publication date
US4694358A (en) 1987-09-15
EP0298137B1 (de) 1993-06-30
AU7537287A (en) 1989-01-12
AU604486B2 (en) 1990-12-20
CA1320269C (en) 1993-07-13
DE3786399D1 (de) 1993-08-05
ATE91190T1 (de) 1993-07-15
EP0298137A1 (de) 1989-01-11

Similar Documents

Publication Publication Date Title
AU7537287A (en) A magnetic-optic recording structure and method
KR950001882B1 (ko) 광 자기 기록 장치
KR880014524A (ko) 광 자기기록 시스템
EP0288069A3 (en) Thermomagnetic recording method applying a power modulated laser beam on a magnetically coupled multi-layer structure of a perpendicular anisotropy magnetic film
ATE36088T1 (de) Duennfilm-magnetkopf auf einem nicht-magnetischen substrat zur senkrechten magnetisierung.
CA2100898A1 (en) Magneto-optical recording medium and method of recording and reproducingusing thereof
KR880014522A (ko) 광자기 기록 재생용 정보담체장치
CA2058173A1 (en) Method of reproducing signals recorded on a magnetooptic recording medium
CA2060547A1 (en) System and method of reproducing signals recorded on a magneto-optic recording medium
JPS5792446A (en) Recording, reproduction and erasure system for information using photomagnetic recording medium
JP2801338B2 (ja) 光磁気記録装置
KR950015265A (ko) 초 해상도의 광자기 기록 매체 및 이 매체를 이용한 정보 재생 방법
JPS6417248A (en) Multivalued logic recording and reproducing method for magneto-optical recording carrier
KR920001459A (ko) 광자기 기록 재생방법 및 광자기 기록 재생장치
JP2530310B2 (ja) 補助磁界印加装置
EP0348198A3 (en) Method of magneto-optically recording and erasing information and magneto-optical information storage medium for carrying out the method
US5161132A (en) Magneto-optical recording apparatus including a magnetic head of a pneumatic floating type
CA2081153A1 (en) Magneto-optical memory device whereon overwriting operation can be carried out through light intensity modulation and method for recording and erasing using it
JPH0334139A (ja) 光磁気記録媒体及び記録方法
JPH01171137A (ja) 光磁気記録媒体
JP3245190B2 (ja) 情報記憶装置
KR890002849A (ko) 자기-광학기록 구조 및 방법
JPH0453046A (ja) 光磁気記録再生装置
JPH032429U (es)
JPH01128246A (ja) 光磁気記録の記録方式

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 298137

Country of ref document: ES