FR2289022A1 - MAGNETIC DISC HOLDER - Google Patents

MAGNETIC DISC HOLDER

Info

Publication number
FR2289022A1
FR2289022A1 FR7532000A FR7532000A FR2289022A1 FR 2289022 A1 FR2289022 A1 FR 2289022A1 FR 7532000 A FR7532000 A FR 7532000A FR 7532000 A FR7532000 A FR 7532000A FR 2289022 A1 FR2289022 A1 FR 2289022A1
Authority
FR
France
Prior art keywords
magnetic disc
disc holder
holder
magnetic
disc
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.)
Granted
Application number
FR7532000A
Other languages
French (fr)
Other versions
FR2289022B1 (en
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of FR2289022A1 publication Critical patent/FR2289022A1/en
Application granted granted Critical
Publication of FR2289022B1 publication Critical patent/FR2289022B1/fr
Granted 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
    • G11B5/74—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
FR7532000A 1974-10-24 1975-10-20 MAGNETIC DISC HOLDER Granted FR2289022A1 (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
FR2289022A1 true FR2289022A1 (en) 1976-05-21
FR2289022B1 FR2289022B1 (en) 1980-01-04

Family

ID=14823871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532000A Granted FR2289022A1 (en) 1974-10-24 1975-10-20 MAGNETIC DISC HOLDER

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038419A1 (en) * 1980-04-17 1981-10-28 International Business Machines Corporation Multiple layered magnetic thin-film disk with synthetic resin layer and method for its manufacture

Families Citing this family (6)

* 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
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
GB2191511A (en) * 1986-06-10 1987-12-16 Komatsu Mfg Co Ltd Fabricating an electro-photographic photosensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038419A1 (en) * 1980-04-17 1981-10-28 International Business Machines Corporation Multiple layered magnetic thin-film disk with synthetic resin layer and method for its manufacture

Also Published As

Publication number Publication date
FR2289022B1 (en) 1980-01-04
DE2547408A1 (en) 1976-04-29
NL7512229A (en) 1976-04-27
NL182180C (en) 1988-01-18
JPS5337203B2 (en) 1978-10-07
JPS5148303A (en) 1976-04-26
GB1493160A (en) 1977-11-23

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Legal Events

Date Code Title Description
TP Transmission of property