GB2266319B - Substrate for vertical magnetic recording, magnetic disk, and process for their production - Google Patents

Substrate for vertical magnetic recording, magnetic disk, and process for their production

Info

Publication number
GB2266319B
GB2266319B GB9306747A GB9306747A GB2266319B GB 2266319 B GB2266319 B GB 2266319B GB 9306747 A GB9306747 A GB 9306747A GB 9306747 A GB9306747 A GB 9306747A GB 2266319 B GB2266319 B GB 2266319B
Authority
GB
United Kingdom
Prior art keywords
substrate
production
magnetic disk
magnetic recording
vertical
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 - Fee Related
Application number
GB9306747A
Other versions
GB9306747D0 (en
GB2266319A (en
Inventor
Kazuo Ogata
Kazuo Muramatsu
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of GB9306747D0 publication Critical patent/GB9306747D0/en
Publication of GB2266319A publication Critical patent/GB2266319A/en
Application granted granted Critical
Publication of GB2266319B publication Critical patent/GB2266319B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
    • 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
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
GB9306747A 1992-04-01 1993-03-31 Substrate for vertical magnetic recording, magnetic disk, and process for their production Expired - Fee Related GB2266319B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4079504A JPH05282668A (en) 1992-04-01 1992-04-01 Substrate for perpendicular magnetic recording, magnetic disk and its production

Publications (3)

Publication Number Publication Date
GB9306747D0 GB9306747D0 (en) 1993-05-26
GB2266319A GB2266319A (en) 1993-10-27
GB2266319B true GB2266319B (en) 1995-06-07

Family

ID=13691772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9306747A Expired - Fee Related GB2266319B (en) 1992-04-01 1993-03-31 Substrate for vertical magnetic recording, magnetic disk, and process for their production

Country Status (3)

Country Link
JP (1) JPH05282668A (en)
DE (1) DE4310758A1 (en)
GB (1) GB2266319B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1061511A3 (en) * 1999-06-15 2002-02-06 Sharp Kabushiki Kaisha Magnetooptical recording alloy
WO2004061829A1 (en) * 2002-12-26 2004-07-22 Fujitsu Limited Perpendicular magnetic recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361483A1 (en) * 1988-09-30 1990-04-04 Furukawa Aluminum Co., Ltd. Aluminum alloy for magnetic disc substrate excellent in platability
DE3837724C2 (en) * 1987-11-07 1992-03-05 Kabushiki Kaisha Kobe Seiko Sho, Kobe, Hyogo, Jp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02246017A (en) * 1989-03-20 1990-10-01 Mitsubishi Electric Corp Magnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837724C2 (en) * 1987-11-07 1992-03-05 Kabushiki Kaisha Kobe Seiko Sho, Kobe, Hyogo, Jp
EP0361483A1 (en) * 1988-09-30 1990-04-04 Furukawa Aluminum Co., Ltd. Aluminum alloy for magnetic disc substrate excellent in platability

Also Published As

Publication number Publication date
GB9306747D0 (en) 1993-05-26
DE4310758A1 (en) 1993-10-14
GB2266319A (en) 1993-10-27
JPH05282668A (en) 1993-10-29

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000331