DE69503282D1 - Magnetisches Aufzeichnungsmedium - Google Patents

Magnetisches Aufzeichnungsmedium

Info

Publication number
DE69503282D1
DE69503282D1 DE69503282T DE69503282T DE69503282D1 DE 69503282 D1 DE69503282 D1 DE 69503282D1 DE 69503282 T DE69503282 T DE 69503282T DE 69503282 T DE69503282 T DE 69503282T DE 69503282 D1 DE69503282 D1 DE 69503282D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic recording
magnetic
medium
recording
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
DE69503282T
Other languages
English (en)
Other versions
DE69503282T2 (de
Inventor
Hiroyuki Miyabara
Shigeharu Watase
Yoshio Kawakami
Kiyoto Fukushima
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Application granted granted Critical
Publication of DE69503282D1 publication Critical patent/DE69503282D1/de
Publication of DE69503282T2 publication Critical patent/DE69503282T2/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
    • 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
    • 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
    • G11B5/73—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
    • 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
    • G11B5/7369—Two or more non-magnetic underlayers, e.g. seed layers or barrier layers
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • 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
    • Y10T428/26—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
DE69503282T 1994-03-31 1995-03-31 Magnetisches Aufzeichnungsmedium Expired - Fee Related DE69503282T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6083655A JPH07272256A (ja) 1994-03-31 1994-03-31 磁気記録媒体

Publications (2)

Publication Number Publication Date
DE69503282D1 true DE69503282D1 (de) 1998-08-13
DE69503282T2 DE69503282T2 (de) 1998-12-17

Family

ID=13808477

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69503282T Expired - Fee Related DE69503282T2 (de) 1994-03-31 1995-03-31 Magnetisches Aufzeichnungsmedium

Country Status (4)

Country Link
US (1) US5567502A (de)
EP (1) EP0675487B1 (de)
JP (1) JPH07272256A (de)
DE (1) DE69503282T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5895707A (en) * 1995-05-31 1999-04-20 Sony Corporation Magnetic recording medium
EP1073041A1 (de) * 1999-07-28 2001-01-31 TDK Corporation Magnetisches Aufzeichnungsmedium
JP2001126231A (ja) * 1999-10-28 2001-05-11 Tdk Corp 磁気記録媒体
US6787063B2 (en) * 2001-03-12 2004-09-07 Seiko Epson Corporation Compositions, methods for producing films, functional elements, methods for producing functional elements, methods for producing electro-optical devices and methods for producing electronic apparatus
JP2004146041A (ja) * 2002-10-04 2004-05-20 Fuji Photo Film Co Ltd 磁気記録媒体の製造方法
JP2006054000A (ja) 2004-08-12 2006-02-23 Hitachi Maxell Ltd 磁気記録媒体
US8545959B2 (en) 2005-10-21 2013-10-01 Entrotech Composites, Llc Composite articles comprising protective sheets and related methods
EP2193024A4 (de) 2007-09-25 2013-11-06 Entrotech Inc Farbersatzfilme, verbundstoffe daraus und verwandte verfahren
US10981371B2 (en) 2008-01-19 2021-04-20 Entrotech, Inc. Protected graphics and related methods
WO2018057378A1 (en) 2016-09-20 2018-03-29 Aero Advanced Paint Technology, Inc. Paint film appliques with reduced defects, articles, and methods
CN109890931B (zh) * 2016-10-25 2021-03-16 3M创新有限公司 可磁化磨料颗粒和包含可磁化磨料颗粒的磨料制品

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451532A (en) * 1981-05-29 1984-05-29 International Business Machines Corporation Magnetic recording composition employing mono-dispersed spherical load-bearing particles
DE3414347A1 (de) * 1984-04-16 1985-10-24 Hoechst Ag, 6230 Frankfurt Traegerfolie fuer magnetische informationstraeger
JPH0668801B2 (ja) * 1985-08-28 1994-08-31 株式会社日立製作所 磁気記録装置
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
JP2728268B2 (ja) * 1988-09-08 1998-03-18 ティーディーケイ株式会社 テープ状磁気記録媒体
JPH0449519A (ja) * 1990-06-19 1992-02-18 Matsushita Electric Ind Co Ltd 磁気記録媒体
JP2809287B2 (ja) * 1991-04-19 1998-10-08 富士写真フイルム株式会社 磁気記録媒体
JPH05174367A (ja) * 1991-12-20 1993-07-13 Fuji Photo Film Co Ltd 磁気記録媒体

Also Published As

Publication number Publication date
DE69503282T2 (de) 1998-12-17
US5567502A (en) 1996-10-22
EP0675487A1 (de) 1995-10-04
EP0675487B1 (de) 1998-07-08
JPH07272256A (ja) 1995-10-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee