NL7512229A - MAGNETIC DISK SUBSTRATE. - Google Patents

MAGNETIC DISK SUBSTRATE.

Info

Publication number
NL7512229A
NL7512229A NL7512229A NL7512229A NL7512229A NL 7512229 A NL7512229 A NL 7512229A NL 7512229 A NL7512229 A NL 7512229A NL 7512229 A NL7512229 A NL 7512229A NL 7512229 A NL7512229 A NL 7512229A
Authority
NL
Netherlands
Prior art keywords
magnetic disk
disk substrate
substrate
magnetic
disk
Prior art date
Application number
NL7512229A
Other languages
Dutch (nl)
Other versions
NL182180C (en
Original Assignee
Nippon Telegraph & Telephone
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 Nippon Telegraph & Telephone filed Critical Nippon Telegraph & Telephone
Publication of NL7512229A publication Critical patent/NL7512229A/en
Application granted granted Critical
Publication of NL182180C publication Critical patent/NL182180C/en

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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73913—Composites or coated 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
NLAANVRAGE7512229,A 1974-10-24 1975-10-17 MAGNETIC DISK SUBSTRATE FOR REGISTRATION WITH GREAT STORAGE DENSITY. NL182180C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12194874A JPS5337203B2 (en) 1974-10-24 1974-10-24

Publications (2)

Publication Number Publication Date
NL7512229A true NL7512229A (en) 1976-04-27
NL182180C NL182180C (en) 1988-01-18

Family

ID=14823871

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7512229,A NL182180C (en) 1974-10-24 1975-10-17 MAGNETIC DISK SUBSTRATE FOR REGISTRATION WITH GREAT STORAGE DENSITY.

Country Status (5)

Country Link
JP (1) JPS5337203B2 (en)
DE (1) DE2547408A1 (en)
FR (1) FR2289022A1 (en)
GB (1) GB1493160A (en)
NL (1) NL182180C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5168207A (en) * 1974-12-10 1976-06-12 Fujitsu Ltd JIKIDEISUKUYOKIBANNO SEIZOHOHO
JPS5760957Y2 (en) * 1978-09-14 1982-12-25
DE3014718A1 (en) * 1980-04-17 1981-10-22 Ibm Deutschland Gmbh, 7000 Stuttgart MULTILAYER MAGNETIC THIN FILM PLATE WITH SYNTHETIC RESIN LAYER AND METHOD FOR THE PRODUCTION THEREOF
JPS59180832A (en) * 1983-03-31 1984-10-15 Nippon Light Metal Co Ltd Alumite substrate for magnetic recording material
JPS6022733A (en) * 1983-07-19 1985-02-05 Hitachi Metals Ltd Substrate for magnetic disc
US4552820A (en) * 1984-04-25 1985-11-12 Lin Data Corporation Disc media
DE3619432A1 (en) * 1986-06-10 1987-12-17 Komatsu Mfg Co Ltd METHOD FOR PRODUCING AN ELECTROPHOTOGRAPHIC PHOTOSENSOR

Also Published As

Publication number Publication date
JPS5148303A (en) 1976-04-26
JPS5337203B2 (en) 1978-10-07
DE2547408A1 (en) 1976-04-29
NL182180C (en) 1988-01-18
GB1493160A (en) 1977-11-23
FR2289022B1 (en) 1980-01-04
FR2289022A1 (en) 1976-05-21

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Legal Events

Date Code Title Description
BC A request for examination has been filed
A85 Still pending on 85-01-01
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

V4 Lapsed because of reaching the maximum lifetime of a patent

Free format text: 951017