DE3577247D1 - Magneto-optischer aufzeichnungstraeger. - Google Patents

Magneto-optischer aufzeichnungstraeger.

Info

Publication number: DE3577247D1
Authority: DE; Germany
Prior art keywords: magneto; record carrier; optical record; optical; carrier
Prior art date: 1984-02-06
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 - Lifetime

Application number

DE8585300775T

Other languages

English (en)

Inventor

Kyuzo Nakamura

Yoshifumi Ota

Shin Asari

Tsutomu Asaka

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.)

Ulvac Inc

Original Assignee

Ulvac Inc

Nihon Shinku Gijutsu KK

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.)

1984-02-06

Filing date

1985-02-06

Publication date

1990-05-23

1984-02-06 Priority claimed from JP59018253A external-priority patent/JPS60163247A/ja

1984-03-15 Priority claimed from JP4820584A external-priority patent/JPS60193150A/ja

1985-02-06 Application filed by Ulvac Inc, Nihon Shinku Gijutsu KK filed Critical Ulvac Inc

1990-05-23 Application granted granted Critical

1990-05-23 Publication of DE3577247D1 publication Critical patent/DE3577247D1/de

2005-02-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- G11B5/62—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
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
- 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
- G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
- 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

DE8585300775T 1984-02-06 1985-02-06 Magneto-optischer aufzeichnungstraeger. Expired - Lifetime DE3577247D1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP59018253A JPS60163247A (ja)	1984-02-06	1984-02-06	光磁気記録体
JP4820584A JPS60193150A (ja)	1984-03-15	1984-03-15	光磁気記録体

Publications (1)

Publication Number	Publication Date
DE3577247D1 true DE3577247D1 (de)	1990-05-23

Family

ID=26354897

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8585300775T Expired - Lifetime DE3577247D1 (de)	1984-02-06	1985-02-06	Magneto-optischer aufzeichnungstraeger.

Country Status (3)

Country	Link
US (1)	US4661420A (de)
EP (1)	EP0152269B1 (de)
DE (1)	DE3577247D1 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0618059B2 (ja) *	1984-04-11	1994-03-09	株式会社日立製作所	垂直磁気記録媒体
US4777068A (en) *	1984-08-10	1988-10-11	Canon Kabushiki Kaisha	Optical recording medium
EP0369225B1 (de) *	1984-10-22	1995-01-11	Hitachi, Ltd.	Magnetischer Aufzeichnungsträger
US4719154A (en) *	1986-09-17	1988-01-12	Eastman Kodak Company	Magneto-optic recording element with amorphous aluminum-nitrogen alloy layer
US4849304A (en) *	1986-12-17	1989-07-18	Tdk Corporation	Optical recording medium
US4902584A (en) *	1986-12-25	1990-02-20	Tdk Corporation	Optical recording medium
US4879205A (en) *	1987-01-20	1989-11-07	Kabushiki Kaisha Toshiba	Information storage medium and a method of manufacturing the same
US5158834A (en) *	1988-02-01	1992-10-27	Minnesota Mining And Manufacturing Company	Magneto optic recording medium with silicon carbide dielectric
US5098541A (en) *	1988-02-01	1992-03-24	Minnesota Mining And Manufacturing Company	Method of making magneto optic recording medium with silicon carbide dielectric
US4917970A (en) *	1988-02-01	1990-04-17	Minnesota Mining & Manufacturing Company	Magneto optic recording medium with silicon carbide dielectric
DE3803000A1 (de) *	1988-02-02	1989-08-10	Basf Ag	Flaechenfoermiges, mehrschichtiges magneto-optisches aufzeichnungsmaterial
CA2004936C (en) *	1988-12-14	1999-01-19	Masahiko Sekiya	Optical recording medium
US5192626A (en) *	1988-12-14	1993-03-09	Teijin Limited	Optical recording medium
EP0388852B1 (de) *	1989-03-20	1995-06-28	Tosoh Corporation	Magnetooptischer Aufzeichnungsträger und Verfahren zu seiner Herstellung
DE3925050A1 (de) *	1989-07-28	1991-01-31	Basf Ag	Schutzschichten aus keramiken des germaniums
US5108846A (en) *	1990-07-12	1992-04-28	Helmut Steininger	Protective layers of germanium ceramics
KR0172861B1 (ko) *	1990-08-03	1999-04-15	이헌조	광자기 디스크구조
JP3178025B2 (ja) *	1990-11-07	2001-06-18	ソニー株式会社	光磁気記録媒体及びその製造方法
US5190631A (en) *	1991-01-09	1993-03-02	The Carborundum Company	Process for forming transparent silicon carbide films
JPH05135344A (ja) *	1991-05-17	1993-06-01	Tdk Corp	磁気記録媒体
EP0541376B1 (de) *	1991-11-07	1998-06-03	Toray Industries, Inc.	Optisches Aufzeichnungsmedium
US5232791A (en) *	1991-12-23	1993-08-03	Minnesota Mining And Manufacturing Company	Magnetic recording medium having a carbon rich coating
US5565266A (en) *	1993-06-14	1996-10-15	Eastman Kodak Company	Multilayer magnetooptic recording media
WO1995020060A1 (en) *	1994-01-21	1995-07-27	The Carborundum Company	Silicon carbide sputtering target
US5480695A (en) *	1994-08-10	1996-01-02	Tenhover; Michael A.	Ceramic substrates and magnetic data storage components prepared therefrom
US6821707B2 (en)	1996-03-11	2004-11-23	Matsushita Electric Industrial Co., Ltd.	Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information
KR19980024169A (ko) *	1996-09-04	1998-07-06	가나이 츠토무	수직자기기록매체 및 그것을 사용한 자기기록 재생장치
US6503690B1 (en)	1997-08-12	2003-01-07	Matsushita Electric Industrial Co., Ltd.	Optical information recording medium, method for producing the same, and method for recording and reproducing optical information
JPH11134720A (ja)	1997-08-28	1999-05-21	Matsushita Electric Ind Co Ltd	光学的情報記録媒体及びその記録再生方法
US6343062B1 (en)	1997-09-26	2002-01-29	Matsushita Electric Industrial Co., Ltd	Optical disk device and optical disk for recording and reproducing high-density signals
TW448443B (en)	1998-08-05	2001-08-01	Matsushita Electric Ind Co Ltd	Optical information storage media and production method as well as the storage reproducing method and device
US6699450B2 (en)	1999-01-08	2004-03-02	Redunndant Materials, Inc.	Carbide material by electromagnetic processing
US7304930B2 (en) *	2001-09-12	2007-12-04	Matsushita Electric Industrial Co., Ltd.	Optical information recording medium and recording method using the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3472575A (en) *	1966-11-04	1969-10-14	Ampex	Magnetic storage medium for enhancing magneto-optic readout
US3965463A (en) *	1972-08-29	1976-06-22	International Business Machines Corporation	Apparatus using amorphous magnetic compositions
US4042341A (en) *	1973-10-15	1977-08-16	General Electric Company	Magnetic films of transition metal-rare earth alloys
CA1185013A (en) *	1981-01-14	1985-04-02	Kenji Ohta	Magneto-optic memory medium
JPS58179940A (ja) *	1982-04-15	1983-10-21	Nec Corp	磁気記憶体の製造方法
DE3382791T2 (de) *	1982-12-15	1995-12-07	Sharp Kk	Magneto-optischer Speicher.
JPS59146463A (ja) *	1983-02-09	1984-08-22	Canon Inc	光熱磁気記録媒体の製法
DE3465811D1 (en) *	1983-04-28	1987-10-08	Plasmon Data Systems Nv	Improvements relating to data storage and recording
US4554217A (en) *	1984-09-20	1985-11-19	Verbatim Corporation	Process for creating wear and corrosion resistant film for magnetic recording media

1985
- 1985-02-05 US US06/698,480 patent/US4661420A/en not_active Expired - Lifetime
- 1985-02-06 EP EP85300775A patent/EP0152269B1/de not_active Expired
- 1985-02-06 DE DE8585300775T patent/DE3577247D1/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0152269B1 (de)	1990-04-18
US4661420A (en)	1987-04-28
EP0152269A2 (de)	1985-08-21
EP0152269A3 (en)	1986-09-03

Publication	Publication Date	Title
DE3577247D1 (de)	1990-05-23	Magneto-optischer aufzeichnungstraeger.
DE3866314D1 (de)	1992-01-02	Magnetooptischer aufzeichnungstraeger.
DE3483476D1 (de)	1990-11-29	Informationsmedium.
DE3668391D1 (de)	1990-02-22	Metallischer magnetischer aufzeichnungstraeger.
KR860005011A (ko)	1986-07-16	미생물 담지체
DE3781712D1 (de)	1992-10-22	Magnetischer aufzeichnungstraeger.
DE3784948D1 (de)	1993-04-29	Magnetischer aufzeichnungstraeger.
DE3685236D1 (de)	1992-06-17	Magnetooptischer informationstraeger.
DE3877234D1 (de)	1993-02-18	Magnetooptisches informationstragendes medium.
DE3680478D1 (de)	1991-08-29	Magnetooptisches aufzeichnungsmedium.
DE3585108D1 (de)	1992-02-20	Magnetooptisches aufzeichnungsmaterial.
DE3587538D1 (de)	1993-09-23	Magneto-optisches speicherelement.
DE3669604D1 (de)	1990-04-19	Magnetischer aufzeichnungstraeger.
DE3784085D1 (de)	1993-03-25	Magnetischer aufzeichnungstraeger.
DE3587728D1 (de)	1994-02-24	Magnetisches Aufzeichnungsgerät.
DE3585847D1 (de)	1992-05-21	Optischer informationsaufzeichnungstraeger.
DE3581627D1 (de)	1991-03-07	Plattenfoermiger speichertraeger.
DE3675726D1 (de)	1991-01-03	Aufzeichnungstraeger.
DE3788972D1 (de)	1994-03-17	Magnetischer Aufzeichnungsträger.
DE3577490D1 (de)	1990-06-07	Magnetischer aufzeichnungstraeger.
DE3578739D1 (de)	1990-08-23	Optischer aufzeichnungstraeger.
DE3575627D1 (de)	1990-03-01	Magnetischer aufzeichnungstraeger.
DE3773531D1 (de)	1991-11-14	Magneto-optischer aufzeichnungstraeger.
DE3683824D1 (de)	1992-03-19	Magnetischer aufzeichnungstraeger.
DE3776688D1 (de)	1992-03-26	Magnetischer aufzeichnungstraeger.

Legal Events

Date	Code	Title	Description
1991-05-08	8364	No opposition during term of opposition