DE3683397D1 - Aufzeichnungsmedium mit longitudinal ausgerichteter magnetischer schicht. - Google Patents

Aufzeichnungsmedium mit longitudinal ausgerichteter magnetischer schicht.

Info

Publication number
DE3683397D1
DE3683397D1 DE8686401026T DE3683397T DE3683397D1 DE 3683397 D1 DE3683397 D1 DE 3683397D1 DE 8686401026 T DE8686401026 T DE 8686401026T DE 3683397 T DE3683397 T DE 3683397T DE 3683397 D1 DE3683397 D1 DE 3683397D1
Authority
DE
Germany
Prior art keywords
recording medium
magnetic layer
aligned magnetic
longitudinal aligned
longitudinal
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
DE8686401026T
Other languages
English (en)
Inventor
Jun Takahashi
Shigeru Fukushima
Toshikatu Narumi
Ken-Ichi Itoh
Seiya Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
Priority claimed from JP60107635A external-priority patent/JPS61276123A/ja
Priority claimed from JP60194076A external-priority patent/JPS6254829A/ja
Priority claimed from JP7816086A external-priority patent/JPS62236140A/ja
Priority claimed from JP61078159A external-priority patent/JPS62236139A/ja
Priority claimed from JP61079170A external-priority patent/JPS62236133A/ja
Priority claimed from JP61080064A external-priority patent/JPS62239318A/ja
Priority claimed from JP61080065A external-priority patent/JPS62239319A/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3683397D1 publication Critical patent/DE3683397D1/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
    • G11B5/708—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
    • 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
    • G11B5/70652—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 gamma - Fe2 O3
    • 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
    • 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
    • G11B5/714—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 dimension of the magnetic 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field
    • 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
DE8686401026T 1985-05-20 1986-05-13 Aufzeichnungsmedium mit longitudinal ausgerichteter magnetischer schicht. Expired - Fee Related DE3683397D1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP60107635A JPS61276123A (ja) 1985-05-20 1985-05-20 磁気デイスクの製造方法
JP60194076A JPS6254829A (ja) 1985-09-03 1985-09-03 磁気デイスクの製造方法
JP7816086A JPS62236140A (ja) 1986-04-07 1986-04-07 水平配向磁気記録媒体の製造方法
JP61078159A JPS62236139A (ja) 1986-04-07 1986-04-07 水平配向磁気記録媒体の製造方法
JP61079170A JPS62236133A (ja) 1986-04-08 1986-04-08 水平配向磁気記録媒体
JP61080064A JPS62239318A (ja) 1986-04-09 1986-04-09 水平配向磁気記録媒体
JP61080065A JPS62239319A (ja) 1986-04-09 1986-04-09 水平配向磁気記録媒体およびその記録・再生方法

Publications (1)

Publication Number Publication Date
DE3683397D1 true DE3683397D1 (de) 1992-02-27

Family

ID=27565282

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686401026T Expired - Fee Related DE3683397D1 (de) 1985-05-20 1986-05-13 Aufzeichnungsmedium mit longitudinal ausgerichteter magnetischer schicht.

Country Status (5)

Country Link
US (2) US4746569A (de)
EP (1) EP0203002B1 (de)
AU (2) AU568978B2 (de)
CA (1) CA1291677C (de)
DE (1) DE3683397D1 (de)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
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US5034243A (en) * 1988-11-04 1991-07-23 Hitachi, Ltd. Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor
US5384182A (en) * 1990-05-11 1995-01-24 Kabushiki Kaisha Toshiba Magnetic recording medium and a method for producing the same wherein the medium has two magnetic layers differing in degree of orientation
US5494732A (en) * 1992-01-06 1996-02-27 Kabushiki Kaisha Toshiba Magnetic recording medium and a method for producing the same wherein the medium has two magnetic layers differing in degree of orientation
JPH0620254A (ja) * 1992-07-03 1994-01-28 Tdk Corp 磁気記録媒体およびその製造方法
JPH08147665A (ja) * 1994-11-11 1996-06-07 Hitachi Ltd 磁気記録媒体及びこれを用いた磁気記憶装置
US5700594A (en) * 1995-02-09 1997-12-23 Eastman Kodak Company Magnetic medium capable of supporting both longitudinal and perpendicular recording, and method of making same
JPH1173640A (ja) * 1997-08-28 1999-03-16 Sony Corp 磁気記録媒体
DE10203381B4 (de) * 2002-01-29 2004-04-08 Günter KLIEWE Halterung zum Befestigen eines Schutzkorbs am Schaft eines Bootsaußenbordmotors
SG110125A1 (en) * 2003-09-12 2005-04-28 Univ Waseda Magnetic recording medium and substrate for magnetic recording medium
JP6316248B2 (ja) 2015-08-21 2018-04-25 富士フイルム株式会社 磁気テープおよびその製造方法
US10540996B2 (en) 2015-09-30 2020-01-21 Fujifilm Corporation Magnetic tape having characterized magnetic layer and magnetic tape device
US10403319B2 (en) 2015-12-16 2019-09-03 Fujifilm Corporation Magnetic tape having characterized magnetic layer, tape cartridge, and recording and reproducing device
JP6552402B2 (ja) 2015-12-16 2019-07-31 富士フイルム株式会社 磁気テープ、磁気テープカートリッジ、磁気記録再生装置および磁気テープの製造方法
JP6430927B2 (ja) 2015-12-25 2018-11-28 富士フイルム株式会社 磁気テープおよびその製造方法
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JPS549905A (en) * 1977-06-24 1979-01-25 Fujitsu Ltd Production of magnetic discs
EP0043882A1 (de) * 1980-07-16 1982-01-20 Kodak-Pathe Magnetisches Aufzeichnungselement, Verfahren zu seiner Herstellung und seine Verwendung beim Aufzeichnen
JPS57195327A (en) * 1981-05-26 1982-12-01 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57212623A (en) * 1981-06-23 1982-12-27 Toshiba Corp Magnetic recording medium
JPS586526A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体
JPS586525A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体
JPS5880136A (ja) * 1981-11-02 1983-05-14 Fuji Photo Film Co Ltd 磁気記録材料の製造方法
EP0094452A3 (de) * 1982-05-19 1986-01-02 International Business Machines Corporation Herstellung eines magnetischen Aufzeichnungsmediums mit senkrecht orientierten nadelförmigen Teilchen
JPS58203625A (ja) * 1982-05-24 1983-11-28 Toshiba Corp 磁気記録媒体
JPH065575B2 (ja) * 1982-06-17 1994-01-19 富士写真フイルム株式会社 磁気記録媒体の製造法
JPS5996532A (ja) * 1982-11-25 1984-06-04 Fuji Photo Film Co Ltd 磁気記録体
JPS59129933A (ja) * 1983-01-12 1984-07-26 Hitachi Maxell Ltd 磁気記録媒体
DE3308052A1 (de) * 1983-03-08 1984-09-13 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren zur herstellung eines magnetischen aufzeichnungsmaterials mit senkrechtausrichtung
JPS6070518A (ja) * 1983-09-28 1985-04-22 Toshiba Corp 磁気記録媒体
US4518627A (en) * 1984-09-04 1985-05-21 Polaroid Corporation Apparatus and method for disorienting magnetic particles in magnetic recording media
JPS6185622A (ja) * 1984-10-01 1986-05-01 Victor Co Of Japan Ltd 磁気記録媒体
JPS61187125A (ja) * 1985-02-14 1986-08-20 Hitachi Ltd 磁気デイスクの磁場配向方法

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Publication number Publication date
EP0203002A2 (de) 1986-11-26
AU584531B2 (en) 1989-05-25
US4822634A (en) 1989-04-18
EP0203002B1 (de) 1992-01-15
EP0203002A3 (en) 1989-02-01
US4746569A (en) 1988-05-24
AU8147487A (en) 1988-03-17
AU5759386A (en) 1986-11-27
CA1291677C (en) 1991-11-05
AU568978B2 (en) 1988-01-14

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