JPS5660001A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5660001A
JPS5660001A JP13492379A JP13492379A JPS5660001A JP S5660001 A JPS5660001 A JP S5660001A JP 13492379 A JP13492379 A JP 13492379A JP 13492379 A JP13492379 A JP 13492379A JP S5660001 A JPS5660001 A JP S5660001A
Authority
JP
Japan
Prior art keywords
ferrite
easy
magnetic recording
recording medium
particles
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.)
Granted
Application number
JP13492379A
Other languages
Japanese (ja)
Other versions
JPS6311762B2 (en
Inventor
Koki Yokoyama
Reiji Nishikawa
Osamu Kubo
Tatsumi Maeda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13492379A priority Critical patent/JPS5660001A/en
Publication of JPS5660001A publication Critical patent/JPS5660001A/en
Publication of JPS6311762B2 publication Critical patent/JPS6311762B2/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
    • G11B5/706—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

Landscapes

  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To obtain a magnetic recording medium being easy to be handled, easy to be manufactured and suitable for magnetic recording in high density by a method wherein a part of a specified ferrite of hexagonal system is substituted by CO, and the powdered magnetic particles having a specified particle diameter are arranged making the c axis to be perpendicular to the face. CONSTITUTION:A part of M or Fe of a ferrite of hexagonal system being indicated with a general formula AM2Fe16O27 (A indicates one or more elements of Ba, Sr, Ca, Pb and M indicates one or more elements of Zn, Ni, Cu, Fe, Mn) is substituted by Co to obtain a ferrite and is formed to be particles having average diameter of 0.01-0.3mu. This corpuscles of ferrite are mixed with an appropriate binder and are applied to a film. Applying magnetic orientation, the film is treated to dry or is rolled mechanically to arrange the c axis of the particles to be perpendicular against the surface of the substratum. By this way, a magnetic recording medium having flexibility and being easy to be handled, easy to be manufactured and suitable for magnetically perpendicular recording in high density can be obtained.
JP13492379A 1979-10-19 1979-10-19 Magnetic recording medium Granted JPS5660001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13492379A JPS5660001A (en) 1979-10-19 1979-10-19 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13492379A JPS5660001A (en) 1979-10-19 1979-10-19 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5660001A true JPS5660001A (en) 1981-05-23
JPS6311762B2 JPS6311762B2 (en) 1988-03-16

Family

ID=15139694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13492379A Granted JPS5660001A (en) 1979-10-19 1979-10-19 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5660001A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069349A2 (en) * 1981-07-02 1983-01-12 Kabushiki Kaisha Toshiba Magnetic recording media
JPS58222446A (en) * 1982-06-17 1983-12-24 Fuji Photo Film Co Ltd Manufacture of magnetic recording medium
JPS59167843A (en) * 1983-03-14 1984-09-21 Hitachi Maxell Ltd Magnetic recording medium
JPS60143429A (en) * 1983-12-29 1985-07-29 Fuji Photo Film Co Ltd Magnetic recording medium
JPS60158604A (en) * 1984-01-27 1985-08-20 Ricoh Co Ltd Metal oxide magnetic substance and magnetic film
JPS60211904A (en) * 1984-04-06 1985-10-24 Ricoh Co Ltd Magnetic substance and magnetic film of metal oxide
JPS6129415A (en) * 1984-07-21 1986-02-10 Ricoh Co Ltd Magnetic recording medium
JPS61214128A (en) * 1985-03-19 1986-09-24 Tdk Corp Magnetic recording medium
JPS62100418A (en) * 1985-10-23 1987-05-09 バイエル・アクチエンゲゼルシヤフト Fine isometric hexaferrite pigments having w structure
JPS6427206A (en) * 1987-04-21 1989-01-30 Ishihara Mining & Chemical Co Ferromagnetic fine powder for magnetic recording and manufacture thereof
US5055322A (en) * 1989-11-02 1991-10-08 Nippon Zeon Co., Ltd. Method of producing magnetic recording media
US5698336A (en) * 1991-06-28 1997-12-16 Kabushiki Kaisha Toshiba Magnetic recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225975A (en) * 1987-03-16 1988-09-20 Copal Co Ltd Magnetic disk device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069349A2 (en) * 1981-07-02 1983-01-12 Kabushiki Kaisha Toshiba Magnetic recording media
JPS58222446A (en) * 1982-06-17 1983-12-24 Fuji Photo Film Co Ltd Manufacture of magnetic recording medium
JPS59167843A (en) * 1983-03-14 1984-09-21 Hitachi Maxell Ltd Magnetic recording medium
JPS60143429A (en) * 1983-12-29 1985-07-29 Fuji Photo Film Co Ltd Magnetic recording medium
JPS60158604A (en) * 1984-01-27 1985-08-20 Ricoh Co Ltd Metal oxide magnetic substance and magnetic film
JPS60211904A (en) * 1984-04-06 1985-10-24 Ricoh Co Ltd Magnetic substance and magnetic film of metal oxide
JPS6129415A (en) * 1984-07-21 1986-02-10 Ricoh Co Ltd Magnetic recording medium
JPS61214128A (en) * 1985-03-19 1986-09-24 Tdk Corp Magnetic recording medium
JPS62100418A (en) * 1985-10-23 1987-05-09 バイエル・アクチエンゲゼルシヤフト Fine isometric hexaferrite pigments having w structure
JPS6427206A (en) * 1987-04-21 1989-01-30 Ishihara Mining & Chemical Co Ferromagnetic fine powder for magnetic recording and manufacture thereof
US5055322A (en) * 1989-11-02 1991-10-08 Nippon Zeon Co., Ltd. Method of producing magnetic recording media
US5698336A (en) * 1991-06-28 1997-12-16 Kabushiki Kaisha Toshiba Magnetic recording medium

Also Published As

Publication number Publication date
JPS6311762B2 (en) 1988-03-16

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