JPS5017198B1 - - Google Patents
Info
- Publication number
- JPS5017198B1 JPS5017198B1 JP45083524A JP8352470A JPS5017198B1 JP S5017198 B1 JPS5017198 B1 JP S5017198B1 JP 45083524 A JP45083524 A JP 45083524A JP 8352470 A JP8352470 A JP 8352470A JP S5017198 B1 JPS5017198 B1 JP S5017198B1
- 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.)
- Pending
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
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- 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
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- 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)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6932741A FR2060273A1 (en) | 1969-09-25 | 1969-09-25 | Acicular iron oxide prodn |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5017198B1 true JPS5017198B1 (de) | 1975-06-19 |
Family
ID=9040606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP45083524A Pending JPS5017198B1 (de) | 1969-09-25 | 1970-09-25 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5017198B1 (de) |
BE (1) | BE756608A (de) |
DE (1) | DE2047181C3 (de) |
FR (1) | FR2060273A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4255492A (en) | 1969-09-25 | 1981-03-10 | Eastman Kodak Company | Magnetic recording crystals, process for producing same, and magnetic recording webs using same |
FR2487326A1 (fr) * | 1980-07-24 | 1982-01-29 | Kodak Pathe | Procede de preparation de particules aciculaires d'oxyde de fer magnetique |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2558304A (en) * | 1948-03-11 | 1951-06-26 | American Cyanamid Co | Production of iron oxide pigments |
FR1157156A (fr) * | 1956-08-03 | 1958-05-27 | Kodak Pathe | Nouveau procédé de dispersion d'un fluide à l'état très divisé dans une masse liquide et dispositif pour la mise en oeuvre de ce procédé |
DE1242199B (de) * | 1960-12-15 | 1967-06-15 | Bayer Ag | Verfahren zur Herstellung von nadelfoermigem gamma-Eisen(III)-oxid |
FR1357866A (fr) * | 1963-03-29 | 1964-04-10 | Basf Ag | Procédé pour la production d'oxyde de fer jaune alpha aciculaire, convenant notamment comme matière de départ pour la production d'oxyde de fer-iii-gamma hautement coercitif |
-
0
- BE BE756608D patent/BE756608A/xx unknown
-
1969
- 1969-09-25 FR FR6932741A patent/FR2060273A1/fr active Granted
-
1970
- 1970-09-24 DE DE19702047181 patent/DE2047181C3/de not_active Expired
- 1970-09-25 JP JP45083524A patent/JPS5017198B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2060273A1 (en) | 1971-06-18 |
DE2047181C3 (de) | 1980-11-27 |
DE2047181A1 (de) | 1971-04-08 |
BE756608A (fr) | 1971-03-24 |
DE2047181B2 (de) | 1980-03-27 |
FR2060273B1 (de) | 1974-02-01 |