JPS6218970B2 - - Google Patents

Info

Publication number
JPS6218970B2
JPS6218970B2 JP56077539A JP7753981A JPS6218970B2 JP S6218970 B2 JPS6218970 B2 JP S6218970B2 JP 56077539 A JP56077539 A JP 56077539A JP 7753981 A JP7753981 A JP 7753981A JP S6218970 B2 JPS6218970 B2 JP S6218970B2
Authority
JP
Japan
Prior art keywords
magnetic
metal layer
magnetic metal
island
recording 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
Application number
JP56077539A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57191830A (en
Inventor
Takahiro Kawana
Norio Yokoyama
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
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP56077539A priority Critical patent/JPS57191830A/ja
Priority to EP82901533A priority patent/EP0079391B1/en
Priority to DE19823246007 priority patent/DE3246007A1/de
Priority to GB08301832A priority patent/GB2113898B/en
Priority to US06/459,602 priority patent/US4696862A/en
Priority to PCT/JP1982/000185 priority patent/WO1982004158A1/ja
Priority to NL8220164A priority patent/NL8220164A/nl
Publication of JPS57191830A publication Critical patent/JPS57191830A/ja
Publication of JPS6218970B2 publication Critical patent/JPS6218970B2/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
    • 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
    • G11B5/672—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 different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
    • 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
    • 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
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP56077539A 1981-05-22 1981-05-22 Magnetic recording medium Granted JPS57191830A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP56077539A JPS57191830A (en) 1981-05-22 1981-05-22 Magnetic recording medium
EP82901533A EP0079391B1 (en) 1981-05-22 1982-05-21 Magnetic recording medium
DE19823246007 DE3246007A1 (de) 1981-05-22 1982-05-21 Magnetisches aufzeichnungsmedium
GB08301832A GB2113898B (en) 1981-05-22 1982-05-21 Magnetic recording medium
US06/459,602 US4696862A (en) 1981-05-22 1982-05-21 Magnetic recording medium
PCT/JP1982/000185 WO1982004158A1 (fr) 1981-05-22 1982-05-21 Support d'enregistrement magnetique
NL8220164A NL8220164A (nl) 1981-05-22 1982-05-21 Magnetisch registreermedium.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077539A JPS57191830A (en) 1981-05-22 1981-05-22 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57191830A JPS57191830A (en) 1982-11-25
JPS6218970B2 true JPS6218970B2 (enExample) 1987-04-25

Family

ID=13636796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077539A Granted JPS57191830A (en) 1981-05-22 1981-05-22 Magnetic recording medium

Country Status (6)

Country Link
US (1) US4696862A (enExample)
EP (1) EP0079391B1 (enExample)
JP (1) JPS57191830A (enExample)
GB (1) GB2113898B (enExample)
NL (1) NL8220164A (enExample)
WO (1) WO1982004158A1 (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5930230A (ja) * 1982-08-12 1984-02-17 Sony Corp 金属薄膜型磁気記録媒体
JPS6085417A (ja) * 1983-10-14 1985-05-14 Matsushita Electric Ind Co Ltd 薄膜型磁気記録媒体
JPH0827927B2 (ja) * 1987-07-09 1996-03-21 富士通株式会社 磁気記録媒体
DE3803000A1 (de) * 1988-02-02 1989-08-10 Basf Ag Flaechenfoermiges, mehrschichtiges magneto-optisches aufzeichnungsmaterial
DE69020959T2 (de) * 1989-05-22 1995-11-23 Nippon Sheet Glass Co Ltd Substrat für eine Magnetplatte und ein magnetischer Aufzeichnungsträger, der dieses Substrat verwendet.
JP2547651B2 (ja) * 1989-05-22 1996-10-23 日本板硝子株式会社 磁気記録媒体
DE69029024T2 (de) * 1989-10-05 1997-04-30 Ibm Magnetischer Dünnfilmspeicher und Verfahren zu seiner Herstellung
US5958543A (en) * 1995-07-07 1999-09-28 Stor Media,Inc. Micro-texturing for sputtered, thin film magnetic media disks utilizing titanium sputtered in the presence of hydrogen to form micro-texturing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460968A (en) * 1964-11-04 1969-08-12 Ibm Wear resistant magnetic recording member
US3691032A (en) * 1970-05-01 1972-09-12 Gen Electric Permalloy film plated wires having superior nondestructive read-out characteristics and method of forming
US3674554A (en) * 1970-07-23 1972-07-04 Ncr Co Formation of oxide coating on surface of a magnetic cobalt nickel alloy
DE2250480C3 (de) * 1972-10-14 1975-07-17 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung von Monovinylacetylen
DE2250481C3 (de) * 1972-10-14 1981-08-27 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur Herstellung eines magnetischen Aufzeichnungsträgers
JPS56851B2 (enExample) * 1973-07-24 1981-01-09
GB1599161A (en) * 1976-07-15 1981-09-30 Matsushita Electric Industrial Co Ltd Magnetic recording medium and method of making the same
DE3117931C2 (de) * 1980-05-06 1985-07-25 Nippon Electric Co., Ltd., Tokio/Tokyo Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung
CA1188796A (en) * 1981-04-14 1985-06-11 Kenji Yazawa Magnetic recording medium

Also Published As

Publication number Publication date
EP0079391A4 (fr) 1985-10-17
EP0079391A1 (en) 1983-05-25
JPS57191830A (en) 1982-11-25
US4696862A (en) 1987-09-29
GB8301832D0 (en) 1983-02-23
WO1982004158A1 (fr) 1982-11-25
EP0079391B1 (en) 1987-12-02
GB2113898A (en) 1983-08-10
NL8220164A (nl) 1983-04-05
GB2113898B (en) 1985-05-01

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