DE3575627D1 - Magnetischer aufzeichnungstraeger. - Google Patents

Magnetischer aufzeichnungstraeger.

Info

Publication number
DE3575627D1
DE3575627D1 DE8585308219T DE3575627T DE3575627D1 DE 3575627 D1 DE3575627 D1 DE 3575627D1 DE 8585308219 T DE8585308219 T DE 8585308219T DE 3575627 T DE3575627 T DE 3575627T DE 3575627 D1 DE3575627 D1 DE 3575627D1
Authority
DE
Germany
Prior art keywords
magnetic recording
recording carrier
carrier
magnetic
recording
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
DE8585308219T
Other languages
English (en)
Inventor
Masayuki C O Patent Divi Sagoi
Yoichiro C O Patent Div Tanaka
Hiroki C O Patent Div Nakamura
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.)
Toshiba Corp
Original Assignee
Toshiba 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 JP59253058A external-priority patent/JPH07111775B2/ja
Priority claimed from JP25305584A external-priority patent/JPS61131222A/ja
Application filed by Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3575627D1 publication Critical patent/DE3575627D1/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
    • 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
    • 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
    • G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
    • G11B5/7253—Fluorocarbon lubricant
    • 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
    • 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)
DE8585308219T 1984-11-30 1985-11-12 Magnetischer aufzeichnungstraeger. Expired - Lifetime DE3575627D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59253058A JPH07111775B2 (ja) 1984-11-30 1984-11-30 磁気記録媒体
JP25305584A JPS61131222A (ja) 1984-11-30 1984-11-30 磁気記録媒体

Publications (1)

Publication Number Publication Date
DE3575627D1 true DE3575627D1 (de) 1990-03-01

Family

ID=26541019

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585308219T Expired - Lifetime DE3575627D1 (de) 1984-11-30 1985-11-12 Magnetischer aufzeichnungstraeger.

Country Status (3)

Country Link
US (1) US4701374A (de)
EP (1) EP0183427B1 (de)
DE (1) DE3575627D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0715752B2 (ja) * 1985-06-29 1995-02-22 株式会社東芝 磁気記録媒体
US5236791A (en) * 1988-08-31 1993-08-17 Hitachi, Ltd. Magnetic recording medium and magnetic storage
CA2081095A1 (en) * 1991-10-25 1993-04-26 Morimi Hashimoto Magnetic recording medium and method for examining magnetic recording medium
US6136421A (en) * 1998-07-21 2000-10-24 Seagate Technology Llc Magneto-resistance recording media comprising multilayered protective overcoats
JP2002025031A (ja) * 2000-07-11 2002-01-25 Fuji Electric Co Ltd 垂直磁気記録媒体
JP4427392B2 (ja) * 2004-06-22 2010-03-03 株式会社東芝 磁気記録媒体、その製造方法及び磁気記録再生装置
JP4649262B2 (ja) * 2005-04-19 2011-03-09 株式会社東芝 磁気記録媒体の製造方法
US7758982B2 (en) * 2005-09-02 2010-07-20 Hitachi Global Storage Technologies Netherlands B.V. SiN overcoat for perpendicular magnetic recording media
JP4585476B2 (ja) * 2006-03-16 2010-11-24 株式会社東芝 パターンド媒体および磁気記録装置
JP4675812B2 (ja) * 2006-03-30 2011-04-27 株式会社東芝 磁気記録媒体、磁気記録装置および磁気記録媒体の製造方法
JP2008282512A (ja) * 2007-05-14 2008-11-20 Toshiba Corp 磁気記録媒体及び磁気記録再生装置
JP4382843B2 (ja) 2007-09-26 2009-12-16 株式会社東芝 磁気記録媒体およびその製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411963A (en) * 1976-10-29 1983-10-25 Aine Harry E Thin film recording and method of making
US4187344A (en) * 1978-09-27 1980-02-05 Norton Company Protective silicon nitride or silicon oxynitride coating for porous refractories
JPS58179938A (ja) * 1982-04-15 1983-10-21 Nec Corp 磁気記憶体
JPS59127230A (ja) * 1983-01-12 1984-07-23 Tdk Corp 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
US4529659A (en) * 1983-11-05 1985-07-16 Nippon Telegraph & Telephone Public Corporation Magnetic recording member and process for manufacturing the same
JPH113416A (ja) * 1997-06-13 1999-01-06 Fujitsu Ltd 画像転送システム

Also Published As

Publication number Publication date
EP0183427B1 (de) 1990-01-24
US4701374A (en) 1987-10-20
EP0183427A3 (en) 1987-10-07
EP0183427A2 (de) 1986-06-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee