DE3573347D1 - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
DE3573347D1
DE3573347D1 DE8585304321T DE3573347T DE3573347D1 DE 3573347 D1 DE3573347 D1 DE 3573347D1 DE 8585304321 T DE8585304321 T DE 8585304321T DE 3573347 T DE3573347 T DE 3573347T DE 3573347 D1 DE3573347 D1 DE 3573347D1
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
Application number
DE8585304321T
Other languages
English (en)
Inventor
Sadamu Kuse
Seigi Kawarai
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.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Application granted granted Critical
Publication of DE3573347D1 publication Critical patent/DE3573347D1/de
Expired 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
    • 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
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
DE8585304321T 1984-06-15 1985-06-17 Magnetic recording medium Expired DE3573347D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59124330A JPS613318A (ja) 1984-06-15 1984-06-15 磁気記録媒体

Publications (1)

Publication Number Publication Date
DE3573347D1 true DE3573347D1 (en) 1989-11-02

Family

ID=14882663

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585304321T Expired DE3573347D1 (en) 1984-06-15 1985-06-17 Magnetic recording medium

Country Status (5)

Country Link
US (1) US4774147A (de)
EP (1) EP0165076B1 (de)
JP (1) JPS613318A (de)
KR (1) KR930002483B1 (de)
DE (1) DE3573347D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185237A (ja) * 1986-02-10 1987-08-13 Matsushita Electric Ind Co Ltd 磁気記録媒体
US4888215A (en) * 1987-01-30 1989-12-19 Tokai Carbon Co., Ltd. Carbonaceous granular heat insulator and process for preparing the same
JP2817070B2 (ja) * 1991-09-06 1998-10-27 富士写真フイルム株式会社 磁気記録媒体
US5374463A (en) * 1991-10-22 1994-12-20 International Business Machines Corporation Magnetic recording disk having a contiguous fullerene film and a protective overcoat
JP2817502B2 (ja) * 1992-03-25 1998-10-30 日本電気株式会社 磁気記憶体
US6022518A (en) * 1996-09-24 2000-02-08 Petoca, Ltd. Surface graphitized carbon material and process for producing the same
US6051308A (en) * 1997-04-08 2000-04-18 Mitsubishi Chemical Corporation Magnetic recording medium and process for its production
US6458453B1 (en) 1999-04-30 2002-10-01 Toda Kogyo Corporation Magnetic recording medium
JP3972523B2 (ja) * 1999-07-07 2007-09-05 松下電器産業株式会社 カーボンペースト
US6827772B2 (en) 2002-05-24 2004-12-07 Cabot Corporation Carbon black and compositions containing same
CN100426383C (zh) * 2005-09-02 2008-10-15 鸿富锦精密工业（深圳）有限公司 磁记录介质及其制作方法
US20120202081A1 (en) * 2009-10-29 2012-08-09 Junko Takahashi Light-blocking member for optical instrument

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5288307A (en) * 1976-01-20 1977-07-23 Fuji Photo Film Co Ltd Magnetic recording medium
JPS52108804A (en) * 1976-03-10 1977-09-12 Fuji Photo Film Co Ltd Magnetic recording material
JPS5651027A (en) * 1979-10-02 1981-05-08 Hitachi Maxell Ltd Magnetic recording medium
JPS5919234A (ja) * 1982-07-26 1984-01-31 Fuji Photo Film Co Ltd 磁気記録体
JPS5919231A (ja) * 1982-07-26 1984-01-31 Fuji Photo Film Co Ltd 磁気記録体
JPS5928232A (ja) * 1982-08-09 1984-02-14 Victor Co Of Japan Ltd 磁気記録媒体

Also Published As

Publication number Publication date
US4774147A (en) 1988-09-27
EP0165076A3 (en) 1987-10-07
EP0165076A2 (de) 1985-12-18
JPH0467689B2 (de) 1992-10-29
EP0165076B1 (de) 1989-09-27
KR930002483B1 (ko) 1993-04-02
KR860000632A (ko) 1986-01-29
JPS613318A (ja) 1986-01-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee