JPS5221720B2 - - Google Patents

Info

Publication number
JPS5221720B2
JPS5221720B2 JP47098511A JP9851172A JPS5221720B2 JP S5221720 B2 JPS5221720 B2 JP S5221720B2 JP 47098511 A JP47098511 A JP 47098511A JP 9851172 A JP9851172 A JP 9851172A JP S5221720 B2 JPS5221720 B2 JP S5221720B2
Authority
JP
Japan
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
JP47098511A
Other languages
Japanese (ja)
Other versions
JPS4957397A (fr
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 filed Critical
Priority to JP47098511A priority Critical patent/JPS5221720B2/ja
Priority to GB4504473A priority patent/GB1437409A/en
Priority to CA182,127A priority patent/CA1064223A/fr
Priority to DE19732349112 priority patent/DE2349112A1/de
Publication of JPS4957397A publication Critical patent/JPS4957397A/ja
Priority to US05/627,757 priority patent/US4060596A/en
Publication of JPS5221720B2 publication Critical patent/JPS5221720B2/ja
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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • 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
    • G11B5/70647—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 with a skin
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
JP47098511A 1972-09-30 1972-09-30 Expired JPS5221720B2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP47098511A JPS5221720B2 (fr) 1972-09-30 1972-09-30
GB4504473A GB1437409A (en) 1972-09-30 1973-09-26 Methods of making acicular goethite powder
CA182,127A CA1064223A (fr) 1972-09-30 1973-09-28 Methode de fabrication de la poudre de goethite
DE19732349112 DE2349112A1 (de) 1972-09-30 1973-09-29 Verfahren zur herstellung von goethitpulver
US05/627,757 US4060596A (en) 1972-09-30 1975-10-31 Method of making goethite powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47098511A JPS5221720B2 (fr) 1972-09-30 1972-09-30

Publications (2)

Publication Number Publication Date
JPS4957397A JPS4957397A (fr) 1974-06-04
JPS5221720B2 true JPS5221720B2 (fr) 1977-06-13

Family

ID=14221659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47098511A Expired JPS5221720B2 (fr) 1972-09-30 1972-09-30

Country Status (4)

Country Link
JP (1) JPS5221720B2 (fr)
CA (1) CA1064223A (fr)
DE (1) DE2349112A1 (fr)
GB (1) GB1437409A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53127400A (en) * 1977-04-13 1978-11-07 Nippon Telegr & Teleph Corp <Ntt> Production of goethite
JPS54110999A (en) * 1978-02-20 1979-08-30 Nippon Telegr & Teleph Corp <Ntt> Preparation of magnetic particulates
CH637212A5 (fr) * 1980-04-29 1983-07-15 Schweizerische Beratungsstelle Appareil de reglage d'une fixation de securite montee sur un ski.

Also Published As

Publication number Publication date
DE2349112A1 (de) 1974-04-04
JPS4957397A (fr) 1974-06-04
GB1437409A (en) 1976-05-26
CA1064223A (fr) 1979-10-16

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