DE69224947D1 - Magnetooptisches Aufzeichnungsmedium - Google Patents

Magnetooptisches Aufzeichnungsmedium

Info

Publication number
DE69224947D1
DE69224947D1 DE69224947T DE69224947T DE69224947D1 DE 69224947 D1 DE69224947 D1 DE 69224947D1 DE 69224947 T DE69224947 T DE 69224947T DE 69224947 T DE69224947 T DE 69224947T DE 69224947 D1 DE69224947 D1 DE 69224947D1
Authority
DE
Germany
Prior art keywords
magneto
recording medium
optical recording
optical
medium
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 - Fee Related
Application number
DE69224947T
Other languages
English (en)
Other versions
DE69224947T2 (de
Inventor
Yoichi Osato
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
Application granted granted Critical
Publication of DE69224947D1 publication Critical patent/DE69224947D1/de
Publication of DE69224947T2 publication Critical patent/DE69224947T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12632—Four or more distinct components with alternate recurrence of each type component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12875—Platinum group metal-base component
DE69224947T 1991-07-22 1992-07-21 Magnetooptisches Aufzeichnungsmedium Expired - Fee Related DE69224947T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3181046A JP3029485B2 (ja) 1991-07-22 1991-07-22 光磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69224947D1 true DE69224947D1 (de) 1998-05-07
DE69224947T2 DE69224947T2 (de) 1998-08-13

Family

ID=16093827

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224947T Expired - Fee Related DE69224947T2 (de) 1991-07-22 1992-07-21 Magnetooptisches Aufzeichnungsmedium

Country Status (4)

Country Link
US (1) US5370945A (de)
EP (1) EP0529795B1 (de)
JP (1) JP3029485B2 (de)
DE (1) DE69224947T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06139637A (ja) * 1992-10-29 1994-05-20 Canon Inc 光磁気記録媒体
KR0183938B1 (ko) * 1995-10-28 1999-04-15 삼성전자주식회사 비정질 경희토류-천이금속과 반금속의 합금,이로부터 형성되는 광자기 기록막 및 이 기록막을 채용한 광자기 디스크
US6893542B1 (en) 1999-09-10 2005-05-17 Seagate Technology Llc Sputtered multilayer magnetic recording media with ultra-high coercivity
JP5479720B2 (ja) * 2008-12-03 2014-04-23 エイチジーエスティーネザーランドビーブイ 熱アシスト磁気記録媒体

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675767A (en) * 1983-12-12 1987-06-23 Canon Kabushiki Kaisha Opto-magnetic recording medium
JPS60209942A (ja) * 1984-04-02 1985-10-22 Canon Inc 熱磁気記録媒体
US4587176A (en) * 1985-01-14 1986-05-06 E. I. Du Pont De Nemours And Company Layered coherent structures for magnetic recording
US4678721A (en) * 1986-04-07 1987-07-07 U.S. Philips Corporation Magnetic recording medium
JPS62264463A (ja) * 1986-05-12 1987-11-17 Fuji Photo Film Co Ltd 光磁気記録媒体
EP0258978B1 (de) * 1986-07-08 1998-10-07 Canon Kabushiki Kaisha Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode
JPS63107008A (ja) * 1986-07-18 1988-05-12 Res Dev Corp Of Japan 高カ−回転角を有する薄膜及びその製造方法
JP2561655B2 (ja) * 1987-01-29 1996-12-11 株式会社日立製作所 面内磁気記録媒体
JPH0198144A (ja) * 1987-10-09 1989-04-17 Sony Corp 光磁気記録媒体
JPH01162257A (ja) * 1987-12-18 1989-06-26 Sony Corp 光磁気記録媒体
DE3803000A1 (de) * 1988-02-02 1989-08-10 Basf Ag Flaechenfoermiges, mehrschichtiges magneto-optisches aufzeichnungsmaterial
JP2561130B2 (ja) * 1988-06-27 1996-12-04 富士写真フイルム株式会社 光磁気記録媒体
EP0367685A3 (de) * 1988-10-31 1991-08-07 Eastman Kodak Company Magneto-optisches Speichermedium
NL8803168A (nl) * 1988-12-24 1990-07-16 Philips Nv Werkwijze voor het thermomagnetisch registreren van informatie en het optisch uitlezen van de geregistreerde informatie alsmede een registratie-element dat geschikt is voor toepassing in deze werkwijze.
CA2017284C (en) * 1989-07-04 1995-10-03 Kazutomi Suzuki Optical recording medium
JPH03134833A (ja) * 1989-10-20 1991-06-07 Hitachi Ltd 情報記録媒体の構造
JPH03157838A (ja) * 1989-11-15 1991-07-05 Nikon Corp 光磁気記録媒体
US5106703A (en) * 1989-11-27 1992-04-21 Carcia Peter F Platinum/cobalt multilayer film for magneto-optical recording
US5082749A (en) * 1990-03-15 1992-01-21 E. I. Du Pont De Nemours And Company Platinum or palladium/cobalt multilayer on a zinc oxide or indium oxide layer for magneto-optical recording
JPH0453044A (ja) * 1990-06-20 1992-02-20 Hitachi Ltd 光磁気記録媒体
JPH056820A (ja) * 1990-12-28 1993-01-14 Sony Corp 光磁気記録媒体

Also Published As

Publication number Publication date
DE69224947T2 (de) 1998-08-13
EP0529795A1 (de) 1993-03-03
JP3029485B2 (ja) 2000-04-04
JPH0528552A (ja) 1993-02-05
EP0529795B1 (de) 1998-04-01
US5370945A (en) 1994-12-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee