DE69505687T2 - Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd - Google Patents

Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd

Info

Publication number
DE69505687T2
DE69505687T2 DE69505687T DE69505687T DE69505687T2 DE 69505687 T2 DE69505687 T2 DE 69505687T2 DE 69505687 T DE69505687 T DE 69505687T DE 69505687 T DE69505687 T DE 69505687T DE 69505687 T2 DE69505687 T2 DE 69505687T2
Authority
DE
Germany
Prior art keywords
magnetooptic
oxyd
yttrium
recording medium
film layers
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
DE69505687T
Other languages
English (en)
Other versions
DE69505687D1 (de
Inventor
Michael Hintz
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.)
GlassBridge Enterprises Inc
Original Assignee
Imation 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 Imation Corp filed Critical Imation Corp
Application granted granted Critical
Publication of DE69505687D1 publication Critical patent/DE69505687D1/de
Publication of DE69505687T2 publication Critical patent/DE69505687T2/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
    • 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
    • Y10S428/90—Magnetic feature
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69505687T 1994-09-27 1995-07-18 Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd Expired - Fee Related DE69505687T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/313,335 US5648163A (en) 1994-09-27 1994-09-27 Magneto-optic recording medium having magneto-optic film layers separated by yttrium oxide
PCT/US1995/009036 WO1996010251A1 (en) 1994-09-27 1995-07-18 Magneto-optic recording medium having magneto-optic film layers separated by yttrium oxide

Publications (2)

Publication Number Publication Date
DE69505687D1 DE69505687D1 (de) 1998-12-03
DE69505687T2 true DE69505687T2 (de) 1999-03-18

Family

ID=23215319

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69505687T Expired - Fee Related DE69505687T2 (de) 1994-09-27 1995-07-18 Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd

Country Status (7)

Country Link
US (1) US5648163A (de)
EP (1) EP0783749B1 (de)
JP (1) JPH10501090A (de)
KR (1) KR970706570A (de)
CN (1) CN1158667A (de)
DE (1) DE69505687T2 (de)
WO (1) WO1996010251A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5644555A (en) * 1995-01-19 1997-07-01 International Business Machines Corporation Multiple data surface magneto-optical data storage system
US6421303B1 (en) * 1997-11-14 2002-07-16 Fujitsu Limited Multilayer resonance device and magneto-optical recording medium with magnetic center layer of a different thickness than that of the components of the reflecting layers, and method of reproducing the same
JP2006146994A (ja) * 2004-11-16 2006-06-08 Gunma Univ 磁性多層膜及びこれを用いた光磁気記録媒体

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560419B1 (fr) * 1984-02-29 1986-06-13 Bull Sa Milieu d'enregistrement magneto-optique
EP0180459B1 (de) * 1984-10-30 1991-12-18 Brother Kogyo Kabushiki Kaisha Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium
US4794053A (en) * 1985-07-01 1988-12-27 Raytheon Company Optical elements having buried layers
DE3677078D1 (de) * 1985-07-10 1991-02-28 Mitsubishi Chem Ind Magnetooptischer traeger.
EP0239974B1 (de) * 1986-03-29 1991-10-09 Nec Home Electronics Ltd. Magneto-optisches Aufzeichnungsmedium
JPS62264463A (ja) * 1986-05-12 1987-11-17 Fuji Photo Film Co Ltd 光磁気記録媒体
US4849304A (en) * 1986-12-17 1989-07-18 Tdk Corporation Optical recording medium
US4861656A (en) * 1986-12-24 1989-08-29 Tdk Corporation Optical recording medium
JPS6450258A (en) * 1987-08-21 1989-02-27 Sumitomo Metal Mining Co Production of thin film of high-refractive index dielectric material
KR910006659B1 (ko) * 1987-10-29 1991-08-30 미쓰이 세끼유 가가꾸 고오교오 가부시끼가이샤 자기광학 기록매체
JPH01173457A (ja) * 1987-12-28 1989-07-10 Nec Home Electron Ltd 光磁気記録媒体
US5087532A (en) * 1989-08-01 1992-02-11 Minnesota Mining And Manufacturing Company Direct-overwrite magneto-optic media
CA2036890C (en) * 1990-02-28 1996-02-13 Hiroyuki Katayama Magneto-optic recording disk and method of reproducing recorded signals
DE69025395T2 (de) * 1990-03-26 1996-09-19 Ibm Datenträger
JPH1173457A (ja) * 1997-08-29 1999-03-16 Fujitsu F I P Kk 顧客管理システムおよび記録媒体

Also Published As

Publication number Publication date
JPH10501090A (ja) 1998-01-27
EP0783749B1 (de) 1998-10-28
WO1996010251A1 (en) 1996-04-04
EP0783749A1 (de) 1997-07-16
KR970706570A (ko) 1997-11-03
US5648163A (en) 1997-07-15
DE69505687D1 (de) 1998-12-03
CN1158667A (zh) 1997-09-03

Similar Documents

Publication Publication Date Title
NL190172C (nl) Magnetisch registreermedium met twee magnetiseerbare lagen.
CA2061237A1 (en) Recording film and recording method
DE69526262D1 (de) Optisches Aufzeichnungsmedium mit zwei Informationsflächen
DE69400719D1 (de) Aufzeichnungsschichten, die Phosphoniumverbindungen enthalten
DE69204869T2 (de) Dünnschichtmagnetkopf.
DE69420321T2 (de) Magnetooptische Mehrschichtaufzeichnungsmedien
DE69409517T2 (de) Mechanisch nichtkompatible aufzeichnungsbandkassetten mit demselben formfaktor
DE69205662D1 (de) Laminierter Polyesterfilm für magnetischen Aufzeichnungsträger.
DE69529937D1 (de) Photoapparat mit Magnetaufzeichnungskopf
DE69502323D1 (de) Wärmeempfindliches Aufzeichnungselement mit klebender Zwischenschicht
DE69505687D1 (de) Magnetooptisches aufzeichnungsmedium mit magnetooptischen filmschichten, die getrennt sind durch yttrium oxyd
DE69418071T2 (de) Magnetischer Aufzeichnungsträger mit hoher Dichte
BR8406655A (pt) Meio de gravacao magnetica,disquete e filme de poliester biaxialmente orientado
DE3674265D1 (de) Magnetkopf aus amorphem magnetfilm hergestellt.
DE69318042T2 (de) Dünnfilmmagnetköpfe mit dünnen nickelunterlagen
DE69501964D1 (de) Plattenkassette mit faserigem gleitblatt
DE69201404D1 (de) Magnetisches Aufzeichnungsmedium.
DE69407415D1 (de) Magnetische aufzeichnungsmedien mit neuem vernetzungsmittel
DE69419586D1 (de) Verbundfolie für Tintenstrahl- und für magnetische Aufzeichnungsverfahren
DE69901488D1 (de) Optisches aufzeichnungsmedum mit dünnen aufzeichnungsschichten
DE69206395D1 (de) Magnetisches Aufzeichnungsmedium.
ATA36798A (de) Filmkamera mit informationsaufzeichnung
DE69203381T2 (de) Aufzeichnungsmittel mit verringerter Farbstoffdiffusion.
MX9302277A (es) Pelicula de poliester para cinta de grabacion magnetica de alta densidad.
DE69201403T2 (de) Magnetisches Aufzeichnungsmedium.

Legal Events

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