JPH0353687B2 - - Google Patents

Info

Publication number
JPH0353687B2
JPH0353687B2 JP56063376A JP6337681A JPH0353687B2 JP H0353687 B2 JPH0353687 B2 JP H0353687B2 JP 56063376 A JP56063376 A JP 56063376A JP 6337681 A JP6337681 A JP 6337681A JP H0353687 B2 JPH0353687 B2 JP H0353687B2
Authority
JP
Japan
Prior art keywords
magnetic
weight
magnetic powder
life
stale
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 - Lifetime
Application number
JP56063376A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57179945A (en
Inventor
Nobutaka Yamaguchi
Masaaki Fujama
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP56063376A priority Critical patent/JPS57179945A/ja
Priority to US06/367,986 priority patent/US4474848A/en
Priority to DE19823215056 priority patent/DE3215056A1/de
Publication of JPS57179945A publication Critical patent/JPS57179945A/ja
Publication of JPH0353687B2 publication Critical patent/JPH0353687B2/ja
Granted 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
    • 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
    • G11B5/71—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 lubricant
    • 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
    • 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

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Lubricants (AREA)
JP56063376A 1981-04-28 1981-04-28 Magnetic recording medium Granted JPS57179945A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56063376A JPS57179945A (en) 1981-04-28 1981-04-28 Magnetic recording medium
US06/367,986 US4474848A (en) 1981-04-28 1982-04-13 Magnetic recording medium
DE19823215056 DE3215056A1 (de) 1981-04-28 1982-04-22 Magnetisches aufzeichnungsmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063376A JPS57179945A (en) 1981-04-28 1981-04-28 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57179945A JPS57179945A (en) 1982-11-05
JPH0353687B2 true JPH0353687B2 (en, 2012) 1991-08-15

Family

ID=13227504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063376A Granted JPS57179945A (en) 1981-04-28 1981-04-28 Magnetic recording medium

Country Status (3)

Country Link
US (1) US4474848A (en, 2012)
JP (1) JPS57179945A (en, 2012)
DE (1) DE3215056A1 (en, 2012)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3217099A1 (de) * 1982-05-07 1983-11-10 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung einer magnetdispersion
US4568619A (en) * 1983-06-09 1986-02-04 E. I. Du Pont De Nemours And Company Nonmagnetic particles to improve properties of magnetic recording compositions
JPS6028026A (ja) * 1983-07-26 1985-02-13 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6057530A (ja) * 1983-09-07 1985-04-03 Hitachi Maxell Ltd 磁気記録媒体
US4626463A (en) * 1984-09-26 1986-12-02 Minnesota Mining And Manufacturing Company Diskette having wear-resistant magnetizable layer
US4952458A (en) * 1984-12-18 1990-08-28 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH0715746B2 (ja) * 1985-01-17 1995-02-22 富士写真フイルム株式会社 磁気記録媒体
JPH0715747B2 (ja) * 1985-02-04 1995-02-22 富士写真フイルム株式会社 磁気記録媒体
JPS61194634A (ja) * 1985-02-23 1986-08-29 Victor Co Of Japan Ltd 磁気記録媒体
JPS61194628A (ja) * 1985-02-23 1986-08-29 Victor Co Of Japan Ltd 磁気記録媒体
JPS61194633A (ja) * 1985-02-23 1986-08-29 Victor Co Of Japan Ltd 磁気記録媒体
JPS61194629A (ja) * 1985-02-23 1986-08-29 Victor Co Of Japan Ltd 磁気記録媒体
JPH0719364B2 (ja) * 1985-02-28 1995-03-06 富士写真フイルム株式会社 磁気記録媒体
JPH0632906B2 (ja) * 1985-10-18 1994-05-02 富士写真フイルム株式会社 磁気ヘッド研磨用研磨テープ
JPS62188019A (ja) * 1986-02-13 1987-08-17 Victor Co Of Japan Ltd 磁気記録媒体
US4752344A (en) * 1986-12-22 1988-06-21 International Business Machines Corporation Magnetic layer and method of manufacture
DE4022221A1 (de) * 1990-07-12 1992-01-23 Basf Magnetics Gmbh Magnetband mit schleifmittel
JPH10320760A (ja) * 1997-05-21 1998-12-04 Fuji Photo Film Co Ltd 磁気記録媒体

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833412A (en) * 1967-08-24 1974-09-03 Fuji Photo Film Co Ltd Magnetic recording medium
DE2255028A1 (de) * 1972-11-10 1974-06-12 Basf Ag Verfahren zur herstellung von magnetischen aufzeichnungsplatten
JPS5062604A (en, 2012) * 1973-10-04 1975-05-28
JPS5270811A (en) * 1975-12-10 1977-06-13 Fuji Photo Film Co Ltd Magnetic recording material
JPS6028052B2 (ja) * 1977-06-01 1985-07-02 ソニー株式会社 磁気記録媒体
JPS54124718A (en) * 1978-03-20 1979-09-27 Hitachi Maxell Magnetic disk cartridge
JPS54124720A (en) * 1978-03-20 1979-09-27 Hitachi Maxell Magnetic disk cartridge
JPS54124716A (en) * 1978-03-20 1979-09-27 Hitachi Maxell Magnetic disk cartridge
JPS54124719A (en) * 1978-03-20 1979-09-27 Hitachi Maxell Magnetic disk cartridge
JPS582414B2 (ja) * 1978-04-24 1983-01-17 日本ビクター株式会社 磁気記録媒体
JPS54143608A (en) * 1978-04-29 1979-11-09 Victor Co Of Japan Ltd Magnetic recording medium
JPS5517816A (en) * 1978-07-19 1980-02-07 Hitachi Maxell Ltd Magnetic recording media
JPS5517815A (en) * 1978-07-19 1980-02-07 Hitachi Maxell Ltd Magnetic recording media
JPS55117738A (en) * 1979-03-03 1980-09-10 Hitachi Maxell Ltd Magnetic recording medium
JPS55117739A (en) * 1979-03-03 1980-09-10 Hitachi Maxell Ltd Magnetic recording medium
JPS5845088B2 (ja) * 1979-03-26 1983-10-07 日立マクセル株式会社 磁気記録媒体

Also Published As

Publication number Publication date
US4474848A (en) 1984-10-02
DE3215056C2 (en, 2012) 1992-01-09
JPS57179945A (en) 1982-11-05
DE3215056A1 (de) 1982-11-11

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