DE69821699D1 - Magnetisches Aufzeichnungsmedium - Google Patents

Magnetisches Aufzeichnungsmedium

Info

Publication number
DE69821699D1
DE69821699D1 DE69821699T DE69821699T DE69821699D1 DE 69821699 D1 DE69821699 D1 DE 69821699D1 DE 69821699 T DE69821699 T DE 69821699T DE 69821699 T DE69821699 T DE 69821699T DE 69821699 D1 DE69821699 D1 DE 69821699D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
magnetic
medium
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
DE69821699T
Other languages
English (en)
Inventor
Kousaku Tamari
Takanori Doi
Yasuo Kakihara
Kenichi Nakata
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo 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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Application granted granted Critical
Publication of DE69821699D1 publication Critical patent/DE69821699D1/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
    • G11B5/65—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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7371—Non-magnetic single underlayer comprising nickel
    • 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
DE69821699T 1997-09-30 1998-09-28 Magnetisches Aufzeichnungsmedium Expired - Lifetime DE69821699D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9284575A JPH11110732A (ja) 1997-09-30 1997-09-30 磁気記録媒体

Publications (1)

Publication Number Publication Date
DE69821699D1 true DE69821699D1 (de) 2004-03-25

Family

ID=17680245

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69821699T Expired - Lifetime DE69821699D1 (de) 1997-09-30 1998-09-28 Magnetisches Aufzeichnungsmedium

Country Status (5)

Country Link
US (1) US6159594A (de)
EP (1) EP0907162B1 (de)
JP (1) JPH11110732A (de)
DE (1) DE69821699D1 (de)
SG (1) SG68080A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG87797A1 (en) * 1998-03-20 2002-04-16 Toda Kogyo Corp Magnetic recording medium and process for producing the same
SG87798A1 (en) * 1998-03-20 2002-04-16 Toda Kogyo Corp Magnetic recording medium and process for producing the same
EP1089262A1 (de) * 1999-10-01 2001-04-04 Toda Kogyo Corporation Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Herstellung
SG93289A1 (en) * 1999-12-27 2002-12-17 Toda Kogyo Corp Magnetic recording medium and process for producing the same
JP2002260209A (ja) 2001-03-01 2002-09-13 Hitachi Ltd 非晶質磁気記録媒体およびその製法ならびに磁気記録再生装置
SG103871A1 (en) * 2001-07-03 2004-05-26 Toda Kogyo Corp Magnetic recording medium and products for producing the same
US7160636B2 (en) * 2002-09-13 2007-01-09 Nec Tokin Corporation Ferrite thin film, method of manufacturing the same and electromagnetic noise suppressor using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG42857A1 (en) * 1991-10-14 1997-10-17 Ibm A method of servowriting a magnetic disk drive
JP2835661B2 (ja) * 1991-12-19 1998-12-14 富士写真フイルム株式会社 磁気記録媒体及びその製造方法
JP2924935B2 (ja) * 1992-08-26 1999-07-26 戸田工業株式会社 垂直磁化膜、垂直磁化膜用多層膜及び垂直磁化膜の製造法
EP0673021B1 (de) * 1994-03-16 2000-08-02 Toda Kogyo Corp. Magnetisches Aufzeichnungsmedium sowie Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
EP0907162A1 (de) 1999-04-07
SG68080A1 (en) 1999-10-19
JPH11110732A (ja) 1999-04-23
EP0907162B1 (de) 2004-02-18
US6159594A (en) 2000-12-12

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Legal Events

Date Code Title Description
8332 No legal effect for de