DE3884119D1 - Magnetischer Aufzeichnungsträger. - Google Patents

Magnetischer Aufzeichnungsträger.

Info

Publication number: DE3884119D1
Authority: DE; Germany
Prior art keywords: record carrier; magnetic record; magnetic; carrier; record
Prior art date: 1987-10-01
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

DE88115863T

Other languages

English (en)

Other versions

DE3884119T2 (de

Inventor

Mikio Kishimoto

Shin Ichi Kitahata

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.)

1987-10-01

Filing date

1988-09-27

Publication date

1993-10-21

1988-09-27 Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd

1993-10-21 Publication of DE3884119D1 publication Critical patent/DE3884119D1/de

1994-03-10 Application granted granted Critical

1994-03-10 Publication of DE3884119T2 publication Critical patent/DE3884119T2/de

2008-09-28 Anticipated expiration legal-status Critical

Status 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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic 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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
- G11B5/7085—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer non-magnetic abrasive particles
- 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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70678—Ferrites
- 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
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide

DE88115863T 1987-10-01 1988-09-27 Magnetischer Aufzeichnungsträger. Expired - Fee Related DE3884119T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP62249361A JP2620256B2 (ja)	1987-10-01	1987-10-01	磁気記録媒体

Publications (2)

Publication Number	Publication Date
DE3884119D1 true DE3884119D1 (de)	1993-10-21
DE3884119T2 DE3884119T2 (de)	1994-03-10

Family

ID=17191881

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE88115863T Expired - Fee Related DE3884119T2 (de)	1987-10-01	1988-09-27	Magnetischer Aufzeichnungsträger.

Country Status (5)

Country	Link
US (1)	US5047290A (de)
EP (1)	EP0309981B1 (de)
JP (1)	JP2620256B2 (de)
KR (1)	KR960016357B1 (de)
DE (1)	DE3884119T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0672018B2 (ja) *	1989-04-22	1994-09-14	戸田工業株式会社	磁気記録用板状複合フェライト微粒子粉末及びその製造法
JPH04318320A (ja) *	1991-04-18	1992-11-09	Konica Corp	磁気記録媒体
US5698336A (en) *	1991-06-28	1997-12-16	Kabushiki Kaisha Toshiba	Magnetic recording medium
US7091412B2 (en)	2002-03-04	2006-08-15	Nanoset, Llc	Magnetically shielded assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0654532B2 (ja) *	1984-07-12	1994-07-20	富士写真フイルム株式会社	磁気記録媒体
JPS6140823A (ja) *	1984-07-31	1986-02-27	Dowa Mining Co Ltd	マグネトプランバイト型フエライトの水熱合成法
JPS6271026A (ja) *	1985-09-20	1987-04-01	Toyobo Co Ltd	磁気記録媒体
EP0232131B1 (de) *	1986-01-29	1991-09-18	Toda Kogyo Corp.	Plättchenförmige Bariumferritteilchen für magnetische Aufzeichnung und Verfahren zu ihrer Herstellung
JPS62199096A (ja) *	1986-02-27	1987-09-02	株式会社　日本ドウロ−イングコンサルタント	多層プリント基板の製法
US4820433A (en) *	1986-09-05	1989-04-11	Nippon Zeon Co., Ltd.	Magnetic powder for magnetic recording
JP2554651B2 (ja) *	1987-05-13	1996-11-13	株式会社東芝	磁気記録媒体

1987
- 1987-10-01 JP JP62249361A patent/JP2620256B2/ja not_active Expired - Lifetime
1988
- 1988-09-22 KR KR1019880012255A patent/KR960016357B1/ko active IP Right Grant
- 1988-09-27 DE DE88115863T patent/DE3884119T2/de not_active Expired - Fee Related
- 1988-09-27 EP EP88115863A patent/EP0309981B1/de not_active Expired - Lifetime
- 1988-09-28 US US07/250,409 patent/US5047290A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
US5047290A (en)	1991-09-10
KR960016357B1 (ko)	1996-12-09
KR890007231A (ko)	1989-06-19
JP2620256B2 (ja)	1997-06-11
JPH0191320A (ja)	1989-04-11
EP0309981A2 (de)	1989-04-05
EP0309981B1 (de)	1993-09-15
EP0309981A3 (en)	1990-06-27
DE3884119T2 (de)	1994-03-10

Legal Events

Date	Code	Title	Description
1994-10-13	8364	No opposition during term of opposition
1998-09-17	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE3888860D1 (de)	1994-05-11	Magnetischer Aufzeichnungsträger.
DE3850833D1 (de)	1994-09-01	Magnetischer Aufzeichnungsträger.
DE3784948D1 (de)	1993-04-29	Magnetischer aufzeichnungstraeger.
DE3781712D1 (de)	1992-10-22	Magnetischer aufzeichnungstraeger.
DE3866314D1 (de)	1992-01-02	Magnetooptischer aufzeichnungstraeger.
DE69013099D1 (de)	1994-11-10	Magnetischer Aufzeichnungsträger.
DE3784085D1 (de)	1993-03-25	Magnetischer aufzeichnungstraeger.
DE69020224D1 (de)	1995-07-27	Magnetischer Aufzeichnungsträger.
DE3669604D1 (de)	1990-04-19	Magnetischer aufzeichnungstraeger.
DE69020711D1 (de)	1995-08-10	Magnetischer Aufzeichnungsträger.
DE3854990D1 (de)	1996-03-21	Magnetischer Aufzeichnungsträger
DE3788972D1 (de)	1994-03-17	Magnetischer Aufzeichnungsträger.
DE3575627D1 (de)	1990-03-01	Magnetischer aufzeichnungstraeger.
DE3776688D1 (de)	1992-03-26	Magnetischer aufzeichnungstraeger.
DE3683824D1 (de)	1992-03-19	Magnetischer aufzeichnungstraeger.
DE3789130D1 (de)	1994-03-31	Magnetischer Aufzeichnungsträger.
DE69005471D1 (de)	1994-02-10	Magnetischer Aufzeichnungsträger.
DE3676639D1 (de)	1991-02-07	Magnetischer aufzeichnungstraeger.
DE3575034D1 (de)	1990-02-01	Magnetischer aufzeichnungstraeger.
DE3788295D1 (de)	1994-01-13	Magnetischer Aufzeichnungsträger.
DE68909002D1 (de)	1993-10-14	Magnetischer Aufzeichnungsträger.
DE3778424D1 (de)	1992-05-27	Magnetischer aufzeichnungstraeger.
DE3889137D1 (de)	1994-05-26	Magnetischer Aufzeichnungsträger.
DE3884119D1 (de)	1993-10-21	Magnetischer Aufzeichnungsträger.
DE68911569D1 (de)	1994-02-03	Magnetischer Aufzeichnungsträger.