DE3587980T2 - Magnetischer Aufzeichnungsträger. - Google Patents

Magnetischer Aufzeichnungsträger.

Info

Publication number
DE3587980T2
DE3587980T2 DE3587980T DE3587980T DE3587980T2 DE 3587980 T2 DE3587980 T2 DE 3587980T2 DE 3587980 T DE3587980 T DE 3587980T DE 3587980 T DE3587980 T DE 3587980T DE 3587980 T2 DE3587980 T2 DE 3587980T2
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
DE3587980T
Other languages
English (en)
Other versions
DE3587980D1 (de
Inventor
Masaaki Futamoto
Yukio Honda
Seiichi Asada
Takashi Nishimura
Kazuetsu Yoshida
Heigo Ishihara
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.)
Hitachi Ltd
Maxell Holdings Ltd
Original Assignee
Hitachi Ltd
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 JP59221688A external-priority patent/JPH0695381B2/ja
Priority claimed from JP60054419A external-priority patent/JPS61214208A/ja
Application filed by Hitachi Ltd, Hitachi Maxell Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3587980D1 publication Critical patent/DE3587980D1/de
Publication of DE3587980T2 publication Critical patent/DE3587980T2/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record 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
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • G11B5/726—Two or more protective coatings
    • G11B5/7262—Inorganic protective 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • 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
    • G11B5/851—Coating a support with a magnetic layer by sputtering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
DE3587980T 1984-10-22 1985-10-14 Magnetischer Aufzeichnungsträger. Expired - Fee Related DE3587980T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59221688A JPH0695381B2 (ja) 1984-10-22 1984-10-22 磁気記録媒体
JP60054419A JPS61214208A (ja) 1985-03-20 1985-03-20 磁気記録媒体用の保護膜

Publications (2)

Publication Number Publication Date
DE3587980D1 DE3587980D1 (de) 1995-02-23
DE3587980T2 true DE3587980T2 (de) 1995-05-18

Family

ID=26395181

Family Applications (3)

Application Number Title Priority Date Filing Date
DE3587980T Expired - Fee Related DE3587980T2 (de) 1984-10-22 1985-10-14 Magnetischer Aufzeichnungsträger.
DE3587979T Expired - Fee Related DE3587979T2 (de) 1984-10-22 1985-10-14 Magnetischer Aufzeichnungsträger.
DE8585113015T Expired - Lifetime DE3585489D1 (de) 1984-10-22 1985-10-14 Magnetischer aufzeichnungstraeger.

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE3587979T Expired - Fee Related DE3587979T2 (de) 1984-10-22 1985-10-14 Magnetischer Aufzeichnungsträger.
DE8585113015T Expired - Lifetime DE3585489D1 (de) 1984-10-22 1985-10-14 Magnetischer aufzeichnungstraeger.

Country Status (4)

Country Link
US (1) US5073460A (de)
EP (3) EP0179382B1 (de)
KR (1) KR930007058B1 (de)
DE (3) DE3587980T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930703711A (ko) * 1990-12-20 1993-11-30 이와사끼 시게오 자기저항소자, 그의 제조방법 및 그것을 이용한 자기센서
JPH07161034A (ja) * 1993-04-13 1995-06-23 Matsushita Electric Ind Co Ltd 磁気記録媒体
US20040018390A1 (en) * 2001-07-31 2004-01-29 Fuji Electric, Co., Ltd. Perpendicular magnetic recording medium and method of manufacturing the same
JP2022028410A (ja) * 2020-08-03 2022-02-16 昭和電工株式会社 磁気記録媒体用基板、磁気記録媒体及び磁気記憶装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321901A (en) * 1976-08-11 1978-02-28 Fujitsu Ltd Formation of carbonized protective film for magnetic recording medium
US4411963A (en) * 1976-10-29 1983-10-25 Aine Harry E Thin film recording and method of making
JPS5674844A (en) * 1979-11-21 1981-06-20 Fuji Photo Film Co Ltd Magnetic recording medium
DE3117931C2 (de) * 1980-05-06 1985-07-25 Nippon Electric Co., Ltd., Tokio/Tokyo Magnetischer Aufzeichnungsträger und Verfahren zu seiner Herstellung
CA1185013A (en) * 1981-01-14 1985-04-02 Kenji Ohta Magneto-optic memory medium
JPS5819739A (ja) * 1981-07-29 1983-02-04 Sony Corp 薄膜磁気記録媒体
JPS58164030A (ja) * 1982-03-25 1983-09-28 Tdk Corp 磁気記録媒体の製造方法
JPH079699B2 (ja) * 1982-04-15 1995-02-01 日本電気株式会社 磁気ディスク記憶媒体
DE3375340D1 (en) * 1982-11-22 1988-02-18 Ibm Magnetic recording disk
JPH0766528B2 (ja) * 1983-03-18 1995-07-19 富士写真フイルム株式会社 磁気記録媒体
US4661420A (en) * 1984-02-06 1987-04-28 Nihon Shinku Gijutsu Kabushiki Kaisha Optical magnetic recording member

Also Published As

Publication number Publication date
EP0369226B1 (de) 1995-01-11
EP0369226A1 (de) 1990-05-23
DE3585489D1 (de) 1992-04-09
US5073460A (en) 1991-12-17
EP0369225B1 (de) 1995-01-11
DE3587980D1 (de) 1995-02-23
KR860003587A (ko) 1986-05-26
DE3587979T2 (de) 1995-05-18
EP0179382B1 (de) 1992-03-04
EP0369225A1 (de) 1990-05-23
EP0179382A2 (de) 1986-04-30
DE3587979D1 (de) 1995-02-23
EP0179382A3 (en) 1987-12-02
KR930007058B1 (ko) 1993-07-26

Similar Documents

Publication Publication Date Title
DE3888860T2 (de) Magnetischer Aufzeichnungsträger.
DE3850833D1 (de) Magnetischer Aufzeichnungsträger.
DE3784948T2 (de) Magnetischer Aufzeichnungsträger.
DE3781712D1 (de) Magnetischer aufzeichnungstraeger.
DE3577247D1 (de) Magneto-optischer aufzeichnungstraeger.
DE3669604D1 (de) Magnetischer aufzeichnungstraeger.
DE3784085T2 (de) Magnetischer aufzeichnungstraeger.
DE3788972T2 (de) Magnetischer Aufzeichnungsträger.
DE3577490D1 (de) Magnetischer aufzeichnungstraeger.
DE3575627D1 (de) Magnetischer aufzeichnungstraeger.
DE3683824D1 (de) Magnetischer aufzeichnungstraeger.
DE3776688D1 (de) Magnetischer aufzeichnungstraeger.
DE3789130D1 (de) Magnetischer Aufzeichnungsträger.
DE3676639D1 (de) Magnetischer aufzeichnungstraeger.
DE3575034D1 (de) Magnetischer aufzeichnungstraeger.
DE3788295T2 (de) Magnetischer Aufzeichnungsträger.
DE3778424D1 (de) Magnetischer aufzeichnungstraeger.
DE3889137D1 (de) Magnetischer Aufzeichnungsträger.
DE3587979D1 (de) Magnetischer Aufzeichnungsträger.
DE3884119D1 (de) Magnetischer Aufzeichnungsträger.
DE3576010D1 (de) Magnetische aufzeichnungstraeger.
DE3677668D1 (de) Magnetischer aufzeichnungstraeger.
DE3889836T2 (de) Magnetischer Aufzeichnungsträger.
DE3851581D1 (de) Magnetischer Aufzeichnungsträger.
DE3789649D1 (de) Magnetischer Aufzeichnungsträger.

Legal Events

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