DE3888984D1 - Magnetischer Aufzeichnungsträger. - Google Patents

Magnetischer Aufzeichnungsträger.

Info

Publication number
DE3888984D1
DE3888984D1 DE3888984T DE3888984T DE3888984D1 DE 3888984 D1 DE3888984 D1 DE 3888984D1 DE 3888984 T DE3888984 T DE 3888984T DE 3888984 T DE3888984 T DE 3888984T DE 3888984 D1 DE3888984 D1 DE 3888984D1
Authority
DE
Germany
Prior art keywords
record carrier
magnetic record
magnetic
carrier
record
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
DE3888984T
Other languages
English (en)
Other versions
DE3888984T2 (de
Inventor
Noboru Isoe
Tetsuo Mizumura
Kunio Wakai
Hideaki Niimi
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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
Priority claimed from JP55187A external-priority patent/JPS63168815A/ja
Priority claimed from JP15534687A external-priority patent/JPS641116A/ja
Priority claimed from JP30479887A external-priority patent/JPH01158613A/ja
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Application granted granted Critical
Publication of DE3888984D1 publication Critical patent/DE3888984D1/de
Publication of DE3888984T2 publication Critical patent/DE3888984T2/de
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
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
    • 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/722—Protective coatings, e.g. anti-static or antifriction containing an anticorrosive material
DE3888984T 1987-01-07 1988-01-07 Magnetischer Aufzeichnungsträger. Expired - Fee Related DE3888984T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP55187A JPS63168815A (ja) 1987-01-07 1987-01-07 磁気記録媒体
JP15534687A JPS641116A (en) 1987-06-24 1987-06-24 Magnetic recording medium
JP30479887A JPH01158613A (ja) 1987-09-21 1987-12-02 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE3888984D1 true DE3888984D1 (de) 1994-05-19
DE3888984T2 DE3888984T2 (de) 1994-08-04

Family

ID=27274514

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3888984T Expired - Fee Related DE3888984T2 (de) 1987-01-07 1988-01-07 Magnetischer Aufzeichnungsträger.

Country Status (2)

Country Link
EP (1) EP0274437B1 (de)
DE (1) DE3888984T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517411A1 (de) * 1991-06-03 1992-12-09 Hitachi Maxell Ltd. Magnetisches Aufzeichnungsmedium
JPH071537B2 (ja) * 1991-09-24 1995-01-11 インターナショナル・ビジネス・マシーンズ・コーポレイション 磁気記録ディスク、基板及びその製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421305A (en) * 1977-07-18 1979-02-17 Matsushita Electric Ind Co Ltd Production of magnetic recording media
DE3117931C2 (de) * 1980-05-06 1985-07-25 Nippon Electric Co., Ltd., Tokio/Tokyo Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung
JPS5792402A (en) * 1980-11-25 1982-06-09 Fuji Photo Film Co Ltd Magnetic recording and reproducing method
JPS59193536A (ja) * 1983-04-15 1984-11-02 Hitachi Condenser Co Ltd 磁気記録媒体とその製造方法
JP2662777B2 (ja) * 1985-04-15 1997-10-15 日立マクセル株式会社 磁気記録媒体およびその製造方法

Also Published As

Publication number Publication date
EP0274437A2 (de) 1988-07-13
DE3888984T2 (de) 1994-08-04
EP0274437B1 (de) 1994-04-13
EP0274437A3 (en) 1990-07-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee