DE3679227D1 - Magnetischer aufzeichnungstraeger und methode zu seiner herstellung. - Google Patents

Magnetischer aufzeichnungstraeger und methode zu seiner herstellung.

Info

Publication number
DE3679227D1
DE3679227D1 DE8686105179T DE3679227T DE3679227D1 DE 3679227 D1 DE3679227 D1 DE 3679227D1 DE 8686105179 T DE8686105179 T DE 8686105179T DE 3679227 T DE3679227 T DE 3679227T DE 3679227 D1 DE3679227 D1 DE 3679227D1
Authority
DE
Germany
Prior art keywords
production
record carrier
magnetic record
magnetic
carrier
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
DE8686105179T
Other languages
English (en)
Inventor
Hideaki Niimi
Noboru Isoe
Kunio Wakai
Tetsuo Mizumura
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell Ltd
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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Application granted granted Critical
Publication of DE3679227D1 publication Critical patent/DE3679227D1/de
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
    • G11B5/62—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
    • G11B5/667—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic layer
    • 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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/726—Two or more protective coatings
    • G11B5/7262—Inorganic protective coating
    • G11B5/7264—Inorganic carbon protective coating, e.g. graphite, diamond like carbon or doped carbon
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Lubricants (AREA)
DE8686105179T 1985-04-15 1986-04-15 Magnetischer aufzeichnungstraeger und methode zu seiner herstellung. Expired - Lifetime DE3679227D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7856285 1985-04-15

Publications (1)

Publication Number Publication Date
DE3679227D1 true DE3679227D1 (de) 1991-06-20

Family

ID=13665343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686105179T Expired - Lifetime DE3679227D1 (de) 1985-04-15 1986-04-15 Magnetischer aufzeichnungstraeger und methode zu seiner herstellung.

Country Status (5)

Country Link
US (1) US5073449A (de)
EP (1) EP0198472B1 (de)
JP (1) JP2662777B2 (de)
KR (1) KR930007056B1 (de)
DE (1) DE3679227D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3888984T2 (de) * 1987-01-07 1994-08-04 Hitachi Maxell Magnetischer Aufzeichnungsträger.
US5401587A (en) * 1990-03-27 1995-03-28 Kabushiki Kaisha Toyota Chuo Kenkyusho Anisotropic nanophase composite material and method of producing same
JP2623160B2 (ja) * 1990-09-07 1997-06-25 富士写真フイルム株式会社 磁気記録媒体
JPH05101365A (ja) * 1991-03-22 1993-04-23 Tdk Corp 垂直磁気記録媒体およびその製造方法
DE4443530A1 (de) * 1993-12-16 1995-06-22 Basf Magnetics Gmbh Magnetisches Aufzeichnungsmedium und Verfahren zur Herstellung desselben
US5674637A (en) * 1993-12-28 1997-10-07 Tdk Corporation Magnetic recording medium
US5759710A (en) * 1994-08-18 1998-06-02 Matsushita Electric Industrial Co., Ltd. Magnetic recording medium with a magnetic layer having a specific oxygen signal strength profile in the thickness direction
JP3323660B2 (ja) * 1994-08-18 2002-09-09 松下電器産業株式会社 磁気記録媒体と薄膜の製造方法及び薄膜の製造装置
RU2526236C1 (ru) * 2013-03-22 2014-08-20 Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" Способ формирования магнитной паттернированной структуры в немагнитной матрице
JP6402938B2 (ja) * 2015-09-03 2018-10-10 住友金属鉱山株式会社 コバルト価数の評価方法

Family Cites Families (15)

* 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
US4124736A (en) * 1974-10-29 1978-11-07 Poly-Disc Systems, Inc. Surface protected magnetic recording members
GB1599161A (en) * 1976-07-15 1981-09-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and method of making the same
JPS5798133A (en) * 1980-12-05 1982-06-18 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5817544A (ja) * 1981-07-23 1983-02-01 Matsushita Electric Ind Co Ltd 磁気記録媒体の製造方法
US4388367A (en) * 1981-09-28 1983-06-14 Xerox Corporation Perpendicular magnetic recording medium and fabrication
JPS6039160B2 (ja) * 1982-07-22 1985-09-04 新日本製鐵株式会社 絶縁性、耐食性の優れた磁性アモルフアス合金材料
CA1205725A (en) * 1982-09-06 1986-06-10 Emiko Higashinakagawa Corrosion-resistant and wear-resistant amorphous alloy and a method for preparing the same
JPS5961105A (ja) * 1982-09-30 1984-04-07 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0766528B2 (ja) * 1983-03-18 1995-07-19 富士写真フイルム株式会社 磁気記録媒体
JPS59178617A (ja) * 1983-03-30 1984-10-09 Tdk Corp 磁気記録媒体の製造方法
JPS59185022A (ja) * 1983-04-04 1984-10-20 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59203238A (ja) * 1983-04-30 1984-11-17 Tdk Corp 磁気記録媒体の製造方法
US4610911A (en) * 1983-11-03 1986-09-09 Hewlett-Packard Company Thin film magnetic recording media
US4554217A (en) * 1984-09-20 1985-11-19 Verbatim Corporation Process for creating wear and corrosion resistant film for magnetic recording media

Also Published As

Publication number Publication date
EP0198472B1 (de) 1991-05-15
US5073449A (en) 1991-12-17
EP0198472A3 (en) 1989-02-08
KR860008533A (ko) 1986-11-15
JP2662777B2 (ja) 1997-10-15
EP0198472A2 (de) 1986-10-22
KR930007056B1 (ko) 1993-07-26
JPS62275316A (ja) 1987-11-30

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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