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JPS56165928A - Magnetic disc plate - Google Patents

Magnetic disc plate

Info

Publication number
JPS56165928A
JPS56165928A JP7027680A JP7027680A JPS56165928A JP S56165928 A JPS56165928 A JP S56165928A JP 7027680 A JP7027680 A JP 7027680A JP 7027680 A JP7027680 A JP 7027680A JP S56165928 A JPS56165928 A JP S56165928A
Authority
JP
Japan
Prior art keywords
magnetic disc
disc plate
medium
intermediate layer
thin film
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.)
Pending
Application number
JP7027680A
Other languages
Japanese (ja)
Inventor
Sadao Hatano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7027680A priority Critical patent/JPS56165928A/en
Publication of JPS56165928A publication Critical patent/JPS56165928A/en
Pending 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
    • G11B5/73—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve head crash resistance, etc. by imparting a polyimide resin, etc. in lieu of an aluminum anodized film having many defects and forming a continuous thin film medium thereon in a magnetic disc plate. CONSTITUTION:A polyimide resin or a BT resin of triazine type is imparted as an intermediate layer 2 by sputtering, spin coating, etc. on an aluminum blank plate 1, and a continuous thin film medium 3 of gamma-Fe2O3 is formed thereon, whereby an intended magnetic disc plate is formed. The resultant magnetic disc plate has the intermediate layer 2 having resilience, and therefore when it collides against a magnetic head, shock is absorbed and the surface of the medium 3 is effectively protected.
JP7027680A 1980-05-27 1980-05-27 Magnetic disc plate Pending JPS56165928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7027680A JPS56165928A (en) 1980-05-27 1980-05-27 Magnetic disc plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7027680A JPS56165928A (en) 1980-05-27 1980-05-27 Magnetic disc plate

Publications (1)

Publication Number Publication Date
JPS56165928A true JPS56165928A (en) 1981-12-19

Family

ID=13426819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7027680A Pending JPS56165928A (en) 1980-05-27 1980-05-27 Magnetic disc plate

Country Status (1)

Country Link
JP (1) JPS56165928A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671995A (en) * 1984-02-13 1987-06-09 Victor Company Of Japan, Ltd. Magnetic recording medium comprising an undercoating made of a mixture of thermosetting polyurethane and polyester resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671995A (en) * 1984-02-13 1987-06-09 Victor Company Of Japan, Ltd. Magnetic recording medium comprising an undercoating made of a mixture of thermosetting polyurethane and polyester resins

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