DE3587980D1 - Magnetischer Aufzeichnungsträger. - Google Patents

Magnetischer Aufzeichnungsträger.

Info

Publication number: DE3587980D1
Authority: DE; Germany
Prior art keywords: record carrier; magnetic record; magnetic; carrier; record
Prior art date: 1984-10-22
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

DE3587980T2 (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 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.)

1984-10-22

Filing date

1985-10-14

Publication date

1995-02-23

1984-10-22 Priority claimed from JP59221688A external-priority patent/JPH0695381B2/ja

1985-03-20 Priority claimed from JP60054419A external-priority patent/JPS61214208A/ja

1985-10-14 Application filed by Hitachi Ltd, Hitachi Maxell Ltd filed Critical Hitachi Ltd

1995-02-23 Publication of DE3587980D1 publication Critical patent/DE3587980D1/de

1995-05-18 Application granted granted Critical

1995-05-18 Publication of DE3587980T2 publication Critical patent/DE3587980T2/de

2005-10-15 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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

Landscapes

Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Magnetic Record Carriers (AREA)
Manufacturing Of Magnetic Record Carriers (AREA)

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

Family

ID=26395181

Family Applications (3)

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.
DE3587980T Expired - Fee Related DE3587980T2 (de)	1984-10-22	1985-10-14	Magnetischer Aufzeichnungsträger.

Family Applications Before (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)	EP0369226B1 (de)
KR (1)	KR930007058B1 (de)
DE (3)	DE3587979T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0563379A4 (en) *	1990-12-20	1993-12-22	Fmc Co., Ltd.	Magnetic resistance element and its manufacturing method, and magnetic sensor using the magnetic resistance element
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
JP7491133B2 (ja) *	2020-08-03	2024-05-28	株式会社レゾナック	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
EP0109481B1 (de) *	1982-11-22	1988-01-13	International Business Machines Corporation	Magnetische Aufzeichnungsplatte
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

1985
- 1985-10-14 DE DE3587979T patent/DE3587979T2/de not_active Expired - Fee Related
- 1985-10-14 EP EP89120016A patent/EP0369226B1/de not_active Expired - Lifetime
- 1985-10-14 DE DE8585113015T patent/DE3585489D1/de not_active Expired - Lifetime
- 1985-10-14 EP EP89120015A patent/EP0369225B1/de not_active Expired - Lifetime
- 1985-10-14 DE DE3587980T patent/DE3587980T2/de not_active Expired - Fee Related
- 1985-10-14 EP EP85113015A patent/EP0179382B1/de not_active Expired - Lifetime
- 1985-10-21 KR KR1019850007743A patent/KR930007058B1/ko not_active Expired - Fee Related
1990
- 1990-09-18 US US07/584,363 patent/US5073460A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE3585489D1 (de)	1992-04-09
DE3587980T2 (de)	1995-05-18
EP0179382A3 (en)	1987-12-02
US5073460A (en)	1991-12-17
EP0369225A1 (de)	1990-05-23
KR860003587A (ko)	1986-05-26
EP0369226B1 (de)	1995-01-11
KR930007058B1 (ko)	1993-07-26
DE3587979D1 (de)	1995-02-23
DE3587979T2 (de)	1995-05-18
EP0179382B1 (de)	1992-03-04
EP0369226A1 (de)	1990-05-23
EP0369225B1 (de)	1995-01-11
EP0179382A2 (de)	1986-04-30

Publication	Publication Date	Title
DE3888860D1 (de)	1994-05-11	Magnetischer Aufzeichnungsträger.
DE3668391D1 (de)	1990-02-22	Metallischer magnetischer aufzeichnungstraeger.
DE3850833D1 (de)	1994-09-01	Magnetischer Aufzeichnungsträger.
DE3784948D1 (de)	1993-04-29	Magnetischer aufzeichnungstraeger.
DE3781712D1 (de)	1992-10-22	Magnetischer aufzeichnungstraeger.
DE3577247D1 (de)	1990-05-23	Magneto-optischer aufzeichnungstraeger.
DE3585466D1 (de)	1992-04-09	Magnetische aufzeichnungsvorrichtung.
DE3866314D1 (de)	1992-01-02	Magnetooptischer aufzeichnungstraeger.
DE3669604D1 (de)	1990-04-19	Magnetischer aufzeichnungstraeger.
DE3784085D1 (de)	1993-03-25	Magnetischer aufzeichnungstraeger.
DE3587728D1 (de)	1994-02-24	Magnetisches Aufzeichnungsgerät.
DE3675726D1 (de)	1991-01-03	Aufzeichnungstraeger.
DE3788972D1 (de)	1994-03-17	Magnetischer Aufzeichnungsträger.
DE3577490D1 (de)	1990-06-07	Magnetischer aufzeichnungstraeger.
DE3575627D1 (de)	1990-03-01	Magnetischer aufzeichnungstraeger.
DE3683824D1 (de)	1992-03-19	Magnetischer aufzeichnungstraeger.
DE3776688D1 (de)	1992-03-26	Magnetischer aufzeichnungstraeger.
DE3789130D1 (de)	1994-03-31	Magnetischer Aufzeichnungsträger.
DE3676639D1 (de)	1991-02-07	Magnetischer aufzeichnungstraeger.
DE3575034D1 (de)	1990-02-01	Magnetischer aufzeichnungstraeger.
DE69005471D1 (de)	1994-02-10	Magnetischer Aufzeichnungsträger.
DE3788295D1 (de)	1994-01-13	Magnetischer Aufzeichnungsträger.
DE3778424D1 (de)	1992-05-27	Magnetischer aufzeichnungstraeger.
DE68909002D1 (de)	1993-10-14	Magnetischer Aufzeichnungsträger.
DE3884119D1 (de)	1993-10-21	Magnetischer Aufzeichnungsträger.

Legal Events

Date	Code	Title	Description
1996-02-15	8364	No opposition during term of opposition
2001-11-08	8339	Ceased/non-payment of the annual fee