JPS6249963B2 - - Google Patents

Info

Publication number
JPS6249963B2
JPS6249963B2 JP54134924A JP13492479A JPS6249963B2 JP S6249963 B2 JPS6249963 B2 JP S6249963B2 JP 54134924 A JP54134924 A JP 54134924A JP 13492479 A JP13492479 A JP 13492479A JP S6249963 B2 JPS6249963 B2 JP S6249963B2
Authority
JP
Japan
Prior art keywords
magnetic
recording
aqueous solution
salts
coprecipitate
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
JP54134924A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5660002A (en
Inventor
Koki Yokoyama
Reiji Nishikawa
Osamu Kubo
Masanobu Ueha
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
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP13492479A priority Critical patent/JPS5660002A/ja
Publication of JPS5660002A publication Critical patent/JPS5660002A/ja
Publication of JPS6249963B2 publication Critical patent/JPS6249963B2/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)
  • Hard Magnetic Materials (AREA)
JP13492479A 1979-10-19 1979-10-19 Manufacture of high density recording magnetic powder Granted JPS5660002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13492479A JPS5660002A (en) 1979-10-19 1979-10-19 Manufacture of high density recording magnetic powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13492479A JPS5660002A (en) 1979-10-19 1979-10-19 Manufacture of high density recording magnetic powder

Publications (2)

Publication Number Publication Date
JPS5660002A JPS5660002A (en) 1981-05-23
JPS6249963B2 true JPS6249963B2 (en, 2012) 1987-10-22

Family

ID=15139717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13492479A Granted JPS5660002A (en) 1979-10-19 1979-10-19 Manufacture of high density recording magnetic powder

Country Status (1)

Country Link
JP (1) JPS5660002A (en, 2012)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132677A1 (de) * 1981-08-19 1983-03-17 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger
DE3132678A1 (de) * 1981-08-19 1983-03-17 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger
FR2574397B1 (fr) * 1984-12-11 1987-01-09 Centre Nat Rech Scient Procede de preparation de ferrites hexagonales aimantees - utilisation de ces ferrites comme materiaux de base pour aimants ou pour l'enregistrement magnetique
JPH0658735B2 (ja) * 1984-12-26 1994-08-03 株式会社東芝 磁気記録媒体
US4820433A (en) * 1986-09-05 1989-04-11 Nippon Zeon Co., Ltd. Magnetic powder for magnetic recording
US5358660A (en) * 1988-01-14 1994-10-25 Showa Denko Kabushiki Kaisha Magnetic particles for perpendicular magnetic recording
JP2009084125A (ja) * 2007-10-02 2009-04-23 Tdk Corp フェライト粉末の製造方法、フェライト粉末及び磁気記録媒体
JP5521287B2 (ja) * 2008-06-18 2014-06-11 日立金属株式会社 磁気記録媒体用フェライト粒子

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838705A (en, 2012) * 1971-09-17 1973-06-07
JPS4923676A (en, 2012) * 1972-06-22 1974-03-02
JPS50116398A (en, 2012) * 1974-02-22 1975-09-11
JPS50134608A (en, 2012) * 1974-04-10 1975-10-24

Also Published As

Publication number Publication date
JPS5660002A (en) 1981-05-23

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