DE69222975T2 - Magnetischer Aufzeichnungsträger - Google Patents

Magnetischer Aufzeichnungsträger

Info

Publication number
DE69222975T2
DE69222975T2 DE69222975T DE69222975T DE69222975T2 DE 69222975 T2 DE69222975 T2 DE 69222975T2 DE 69222975 T DE69222975 T DE 69222975T DE 69222975 T DE69222975 T DE 69222975T DE 69222975 T2 DE69222975 T2 DE 69222975T2
Authority
DE
Germany
Prior art keywords
thin film
metal thin
ferromagnetic metal
recording medium
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 - Fee Related
Application number
DE69222975T
Other languages
English (en)
Other versions
DE69222975D1 (de
Inventor
Yoshihito Ebine
Jota Ito
Toshikazu Sasaki
Takeo Arai
Hiroshi Kudo
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.)
Sony Corp
Original Assignee
Sony 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
Priority claimed from JP15575391A external-priority patent/JPH04353622A/ja
Priority claimed from JP15575291A external-priority patent/JPH04353621A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE69222975D1 publication Critical patent/DE69222975D1/de
Application granted granted Critical
Publication of DE69222975T2 publication Critical patent/DE69222975T2/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/674—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having differing macroscopic or microscopic structures, e.g. differing crystalline lattices, varying atomic structures or differing roughnesses
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
DE69222975T 1991-05-30 1992-05-27 Magnetischer Aufzeichnungsträger Expired - Fee Related DE69222975T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP15575391A JPH04353622A (ja) 1991-05-30 1991-05-30 磁気記録媒体
JP15575291A JPH04353621A (ja) 1991-05-30 1991-05-30 磁気記録媒体
JP15575491 1991-05-30

Publications (2)

Publication Number Publication Date
DE69222975D1 DE69222975D1 (de) 1997-12-11
DE69222975T2 true DE69222975T2 (de) 1998-05-28

Family

ID=27320882

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69222975T Expired - Fee Related DE69222975T2 (de) 1991-05-30 1992-05-27 Magnetischer Aufzeichnungsträger

Country Status (5)

Country Link
EP (1) EP0516086B1 (de)
KR (1) KR100263020B1 (de)
AT (1) ATE160044T1 (de)
CA (1) CA2070070C (de)
DE (1) DE69222975T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60308300T2 (de) * 2002-12-25 2007-08-30 Sony Corp. Magnetisches Aufzeichnungsmittel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733432A (en) * 1980-08-01 1982-02-23 Sekisui Chem Co Ltd Magnetic recording medium and its production
JPS57143731A (en) * 1981-03-02 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS58171717A (ja) * 1982-04-02 1983-10-08 Dainippon Printing Co Ltd 磁気記録媒体
JPH07101495B2 (ja) * 1985-07-03 1995-11-01 株式会社日立製作所 磁気記録媒体
JPS63113928A (ja) * 1986-10-31 1988-05-18 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS63304423A (ja) * 1987-06-04 1988-12-12 Hitachi Maxell Ltd 磁気記録媒体

Also Published As

Publication number Publication date
KR920022216A (ko) 1992-12-19
EP0516086A2 (de) 1992-12-02
DE69222975D1 (de) 1997-12-11
KR100263020B1 (ko) 2000-08-01
EP0516086B1 (de) 1997-11-05
ATE160044T1 (de) 1997-11-15
CA2070070C (en) 2002-01-22
CA2070070A1 (en) 1992-12-01
EP0516086A3 (en) 1993-05-19

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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