DE69128215T2 - Magnetischer Aufzeichnungsträger - Google Patents

Magnetischer Aufzeichnungsträger

Info

Publication number
DE69128215T2
DE69128215T2 DE1991628215 DE69128215T DE69128215T2 DE 69128215 T2 DE69128215 T2 DE 69128215T2 DE 1991628215 DE1991628215 DE 1991628215 DE 69128215 T DE69128215 T DE 69128215T DE 69128215 T2 DE69128215 T2 DE 69128215T2
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
DE1991628215
Other languages
English (en)
Other versions
DE69128215D1 (de
Inventor
Yukihiro Shimasaki
Kazunori Sakamoto
Akira Kisoda
Yuji Midou
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69128215D1 publication Critical patent/DE69128215D1/de
Publication of DE69128215T2 publication Critical patent/DE69128215T2/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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • 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
    • 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
    • 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
    • G11B5/716—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 two or more magnetic layers
    • 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
    • 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
    • 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
    • Y10T428/259—Silicic material
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31652—Of asbestos
    • Y10T428/31663—As siloxane, silicone or silane
DE1991628215 1990-06-19 1991-06-18 Magnetischer Aufzeichnungsträger Expired - Fee Related DE69128215T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2160534A JPH0449519A (ja) 1990-06-19 1990-06-19 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69128215D1 DE69128215D1 (de) 1998-01-02
DE69128215T2 true DE69128215T2 (de) 1998-03-12

Family

ID=15717056

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1991628215 Expired - Fee Related DE69128215T2 (de) 1990-06-19 1991-06-18 Magnetischer Aufzeichnungsträger

Country Status (5)

Country Link
US (1) US5503922A (de)
EP (1) EP0462570B1 (de)
JP (1) JPH0449519A (de)
KR (1) KR950007134B1 (de)
DE (1) DE69128215T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2566096B2 (ja) * 1992-04-14 1996-12-25 富士写真フイルム株式会社 磁気記録媒体
DE4227872A1 (de) * 1992-08-22 1994-02-24 Basf Magnetics Gmbh Magnetische Aufzeichnungsträger
JPH06231448A (ja) * 1992-12-28 1994-08-19 Minnesota Mining & Mfg Co <3M> 磁気記録媒体とその製造方法
JPH07272256A (ja) * 1994-03-31 1995-10-20 Tdk Corp 磁気記録媒体
US5895707A (en) * 1995-05-31 1999-04-20 Sony Corporation Magnetic recording medium
JPH0935251A (ja) * 1995-07-20 1997-02-07 Fuji Photo Film Co Ltd 磁気記録媒体
US6296996B1 (en) 1997-06-03 2001-10-02 Fuji Photo Film Co., Ltd. Transparent magnetic recording medium
JPH10334458A (ja) * 1997-06-03 1998-12-18 Fuji Photo Film Co Ltd 透明磁気記録媒体
JP3300266B2 (ja) * 1997-11-06 2002-07-08 株式会社日立製作所 磁気ディスク装置
JP2001126232A (ja) * 1999-10-28 2001-05-11 Tdk Corp 磁気記録媒体
WO2004001725A1 (en) * 2002-06-21 2003-12-31 Seagate Technology Llc Multilayer magnetic recording media
US7158346B2 (en) * 2003-12-23 2007-01-02 Seagate Technology Llc Heat assisted magnetic recording film including superparamagnetic nanoparticles dispersed in an antiferromagnetic or ferrimagnetic matrix
US7704614B2 (en) * 2006-10-20 2010-04-27 Seagate Technology Llc Process for fabricating patterned magnetic recording media
US7816023B2 (en) * 2007-12-21 2010-10-19 Imation Corp. Magnetic recording tape having large particles in magnetic recording layer
US9105294B2 (en) * 2010-03-16 2015-08-11 Sony Corporation Composite magnetic recording media
US9324354B2 (en) 2010-04-02 2016-04-26 Sony Corporation Barium ferrite magnetic storage media
JP6334490B2 (ja) * 2015-09-30 2018-05-30 富士フイルム株式会社 磁気記録媒体、磁気信号再生装置、および磁気記録媒体の製造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240847B2 (de) * 1972-10-05 1977-10-14
US4451532A (en) * 1981-05-29 1984-05-29 International Business Machines Corporation Magnetic recording composition employing mono-dispersed spherical load-bearing particles
JPS5979431A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
DE3408000C2 (de) * 1984-03-03 1994-05-19 Basf Ag Magnetische Aufzeichnungsträger
JPS62285228A (ja) * 1986-06-04 1987-12-11 Fujitsu Ltd 磁気デイスクの製造方法
JPH0770047B2 (ja) * 1987-07-06 1995-07-31 富士写真フイルム株式会社 磁気記録媒体
JP2734508B2 (ja) * 1987-08-20 1998-03-30 ソニー株式会社 磁気記録媒体
JP2581569B2 (ja) * 1987-10-19 1997-02-12 富士写真フイルム株式会社 オーディオテープもしくはビデオテープ
JP2641051B2 (ja) * 1987-10-19 1997-08-13 富士写真フイルム株式会社 磁気テープ
US5089317A (en) * 1989-01-20 1992-02-18 Fuji Photo Film Co, Ltd. Magnetic recording medium

Also Published As

Publication number Publication date
US5503922A (en) 1996-04-02
KR920001447A (ko) 1992-01-30
KR950007134B1 (ko) 1995-06-30
JPH0449519A (ja) 1992-02-18
EP0462570A2 (de) 1991-12-27
EP0462570A3 (en) 1992-01-15
DE69128215D1 (de) 1998-01-02
EP0462570B1 (de) 1997-11-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: ADVOTEC. PATENT- UND RECHTSANWAELTE, 80538 MUENCHE

8339 Ceased/non-payment of the annual fee