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

Priority Applications (5)

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

Publications (2)

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

Family

ID=14221659

Family Applications (1)

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

Country Status (4)

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

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
CA1064223A (en) 1979-10-16
DE2349112A1 (de) 1974-04-04
GB1437409A (en) 1976-05-26
JPS4957397A (enrdf_load_stackoverflow) 1974-06-04

Similar Documents

Publication Publication Date Title
FR2170278B1 (enrdf_load_stackoverflow)
JPS49124914A (enrdf_load_stackoverflow)
JPS5523773B2 (enrdf_load_stackoverflow)
JPS5221720B2 (enrdf_load_stackoverflow)
JPS4923351U (enrdf_load_stackoverflow)
JPS499913U (enrdf_load_stackoverflow)
JPS4915494U (enrdf_load_stackoverflow)
JPS4997130U (enrdf_load_stackoverflow)
JPS5236104Y2 (enrdf_load_stackoverflow)
JPS5039197Y2 (enrdf_load_stackoverflow)
CS158590B2 (enrdf_load_stackoverflow)
CS155428B1 (enrdf_load_stackoverflow)
CS152689B1 (enrdf_load_stackoverflow)
CS155026B1 (enrdf_load_stackoverflow)
JPS4981768U (enrdf_load_stackoverflow)
JPS4951253U (enrdf_load_stackoverflow)
CS155590B1 (enrdf_load_stackoverflow)
CS158362B1 (enrdf_load_stackoverflow)
CS159002B1 (enrdf_load_stackoverflow)
JPS48108686U (enrdf_load_stackoverflow)
CS155041B1 (enrdf_load_stackoverflow)
CS159119B1 (enrdf_load_stackoverflow)
CS159435B1 (enrdf_load_stackoverflow)
CH570745A5 (enrdf_load_stackoverflow)
CH577619A5 (enrdf_load_stackoverflow)