JPS4957397A - - Google Patents

Info

Publication number
JPS4957397A
JPS4957397A JP47098511A JP9851172A JPS4957397A JP S4957397 A JPS4957397 A JP S4957397A JP 47098511 A JP47098511 A JP 47098511A JP 9851172 A JP9851172 A JP 9851172A JP S4957397 A JPS4957397 A JP S4957397A
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.)
Granted
Application number
JP47098511A
Other languages
Japanese (ja)
Other versions
JPS5221720B2 (US06277897-20010821-C00009.png
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/en
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 (US06277897-20010821-C00009.png)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP47098511A JPS5221720B2 (US06277897-20010821-C00009.png) 1972-09-30 1972-09-30
GB4504473A GB1437409A (en) 1972-09-30 1973-09-26 Methods of making acicular goethite powder
CA182,127A CA1064223A (en) 1972-09-30 1973-09-28 Method of making goethite powder
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 (US06277897-20010821-C00009.png) 1972-09-30 1972-09-30

Publications (2)

Publication Number Publication Date
JPS4957397A true JPS4957397A (US06277897-20010821-C00009.png) 1974-06-04
JPS5221720B2 JPS5221720B2 (US06277897-20010821-C00009.png) 1977-06-13

Family

ID=14221659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47098511A Expired JPS5221720B2 (US06277897-20010821-C00009.png) 1972-09-30 1972-09-30

Country Status (4)

Country Link
JP (1) JPS5221720B2 (US06277897-20010821-C00009.png)
CA (1) CA1064223A (US06277897-20010821-C00009.png)
DE (1) DE2349112A1 (US06277897-20010821-C00009.png)
GB (1) GB1437409A (US06277897-20010821-C00009.png)

Cited By (2)

* 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH637212A5 (fr) * 1980-04-29 1983-07-15 Schweizerische Beratungsstelle Appareil de reglage d'une fixation de securite montee sur un ski.

Cited By (4)

* 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
JPS5523215B2 (US06277897-20010821-C00009.png) * 1977-04-13 1980-06-21
JPS54110999A (en) * 1978-02-20 1979-08-30 Nippon Telegr & Teleph Corp <Ntt> Preparation of magnetic particulates
JPS5523774B2 (US06277897-20010821-C00009.png) * 1978-02-20 1980-06-25

Also Published As

Publication number Publication date
DE2349112A1 (de) 1974-04-04
CA1064223A (en) 1979-10-16
GB1437409A (en) 1976-05-26
JPS5221720B2 (US06277897-20010821-C00009.png) 1977-06-13

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