DE69434907D1 - Magnetisches aufzeichnungsmedium und dessen herstellung - Google Patents

Magnetisches aufzeichnungsmedium und dessen herstellung

Info

Publication number
DE69434907D1
DE69434907D1 DE69434907T DE69434907T DE69434907D1 DE 69434907 D1 DE69434907 D1 DE 69434907D1 DE 69434907 T DE69434907 T DE 69434907T DE 69434907 T DE69434907 T DE 69434907T DE 69434907 D1 DE69434907 D1 DE 69434907D1
Authority
DE
Germany
Prior art keywords
layer
metallic
recording medium
base body
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
DE69434907T
Other languages
English (en)
Inventor
Migaku Takahashi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE69434907D1 publication Critical patent/DE69434907D1/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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • 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
    • 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
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • 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
    • G11B5/7373—Non-magnetic single underlayer comprising chromium
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates
    • 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
    • G11B5/851—Coating a support with a magnetic layer by sputtering
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • 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)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
DE69434907T 1993-07-21 1994-07-19 Magnetisches aufzeichnungsmedium und dessen herstellung Expired - Lifetime DE69434907D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP20104493 1993-07-21
JP2332694 1994-01-24
PCT/JP1994/001184 WO1995003603A1 (fr) 1993-07-21 1994-07-19 Support d'enregistrement magnetique et sa fabrication

Publications (1)

Publication Number Publication Date
DE69434907D1 true DE69434907D1 (de) 2007-02-15

Family

ID=26360669

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69434907T Expired - Lifetime DE69434907D1 (de) 1993-07-21 1994-07-19 Magnetisches aufzeichnungsmedium und dessen herstellung

Country Status (7)

Country Link
US (1) US5853847A (de)
EP (1) EP0710949B1 (de)
KR (1) KR100418640B1 (de)
CN (2) CN1070305C (de)
AT (1) ATE350748T1 (de)
DE (1) DE69434907D1 (de)
WO (1) WO1995003603A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153297A (en) 1995-03-08 2000-11-28 Migaku Takahashi Magnetic recording medium and method of manufacturing the same
JP3649416B2 (ja) * 1995-11-16 2005-05-18 高橋 研 磁気記録媒体の製造方法
WO1998044490A1 (fr) * 1997-03-28 1998-10-08 Migaku Takahashi Support d'enregistrement magnetique
KR20010005789A (ko) * 1997-03-28 2001-01-15 미가쿠 다카하시 자기기록매체
JP2002504257A (ja) * 1997-06-18 2002-02-05 ザ ダウ ケミカル カンパニー 多層ハードディスクおよびその製造方法
US6081411A (en) * 1998-06-29 2000-06-27 International Business Machines Corporation Thin film disk media using optimum surface orientation to written data tracks
EP1111595A1 (de) * 1999-05-31 2001-06-27 TAKAHASHI, Migaku Grundlage fuer ein magnetisches aufnahmemedium, magnetisches aufnahmemedium, verfahren zur herstellung und magnetisches aufnahmemedium
US6416881B1 (en) 1999-08-10 2002-07-09 Seagate Technology Llc Media with a metal oxide sealing layer
WO2001069595A1 (fr) * 2000-03-17 2001-09-20 Migaku Takahashi Support d'enregistrement magnetique vertical et son procede d'evaluation
JP4391010B2 (ja) * 2000-12-27 2009-12-24 高橋 研 磁気記録媒体、その製造方法および磁気記録装置
US20030010288A1 (en) * 2001-02-08 2003-01-16 Shunpei Yamazaki Film formation apparatus and film formation method
SG102013A1 (en) * 2001-11-09 2004-02-27 Inst Data Storage Manufacturing method for high-density magnetic data storage media
US7964085B1 (en) 2002-11-25 2011-06-21 Applied Materials, Inc. Electrochemical removal of tantalum-containing materials
JP2008078496A (ja) * 2006-09-22 2008-04-03 Mitsui Mining & Smelting Co Ltd 酸化物含有Ｃｏ系合金磁性膜、酸化物含有Ｃｏ系合金ターゲットおよびその製造方法
JP2011248966A (ja) * 2010-05-28 2011-12-08 Wd Media (Singapore) Pte. Ltd 垂直磁気記録媒体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62114124A (ja) * 1985-11-13 1987-05-25 Sony Corp 磁気デイスクの製造方法
JPS62234237A (ja) * 1986-04-03 1987-10-14 Seiko Epson Corp 磁気デイスクの製造方法
US4792497A (en) * 1987-01-29 1988-12-20 Hitachi, Ltd. Magnetic recording media for longitudinal recording
EP0342966A3 (de) * 1988-05-18 1990-12-27 Sumitomo Metal Mining Company Limited Magnetplatte
JPH02244421A (ja) * 1989-03-17 1990-09-28 Hitachi Ltd 薄膜磁気デイスク及びその製造方法
JPH0740342B2 (ja) * 1989-04-04 1995-05-01 三菱化学株式会社 磁気記録媒体及びその製造方法
JPH04109430A (ja) * 1990-08-29 1992-04-10 Showa Alum Corp 磁気ディスクの製造方法
DE69318345T2 (de) * 1992-06-26 1998-11-19 Eastman Kodak Co Kobalt-Platin magnetischer Film und Herstellungsverfahren
US5432012A (en) * 1992-06-30 1995-07-11 Hmt Technology Corporation Thin-film medium with compositional gradient
JPH07121863A (ja) * 1993-10-20 1995-05-12 Sony Corp 磁気ディスク

Also Published As

Publication number Publication date
EP0710949A1 (de) 1996-05-08
KR100418640B1 (ko) 2004-05-31
US5853847A (en) 1998-12-29
ATE350748T1 (de) 2007-01-15
EP0710949A4 (de) 1997-05-07
EP0710949B1 (de) 2007-01-03
CN1127565A (zh) 1996-07-24
CN1285585A (zh) 2001-02-28
WO1995003603A1 (fr) 1995-02-02
KR960704305A (ko) 1996-08-31
CN1070305C (zh) 2001-08-29

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Legal Events

Date Code Title Description
8332 No legal effect for de