JPS5725967B2 - - Google Patents
Info
- Publication number
- JPS5725967B2 JPS5725967B2 JP8712074A JP8712074A JPS5725967B2 JP S5725967 B2 JPS5725967 B2 JP S5725967B2 JP 8712074 A JP8712074 A JP 8712074A JP 8712074 A JP8712074 A JP 8712074A JP S5725967 B2 JPS5725967 B2 JP S5725967B2
- 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
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
- G11B5/70668—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 containing a dopant
- G11B5/70673—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 containing a dopant containing Co
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/24—Oxides of iron
-
- 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
- G11B5/70657—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 with a skin
-
- 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
- G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
-
- 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
- G11B5/70668—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 containing a dopant
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
-
- 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
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732339142 DE2339142C3 (de) | 1973-08-02 | Magnetpigmente mit verbesserter Ausrichtbarkeit und Verfahren zu ihrer Herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5044498A JPS5044498A (ja) | 1975-04-21 |
JPS5725967B2 true JPS5725967B2 (ja) | 1982-06-02 |
Family
ID=5888671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8712074A Expired JPS5725967B2 (ja) | 1973-08-02 | 1974-07-31 |
Country Status (9)
Country | Link |
---|---|
US (1) | US4014710A (ja) |
JP (1) | JPS5725967B2 (ja) |
BE (1) | BE818294A (ja) |
CA (1) | CA1039049A (ja) |
FR (1) | FR2239508B1 (ja) |
GB (1) | GB1455616A (ja) |
IT (1) | IT1018775B (ja) |
NL (1) | NL178886C (ja) |
PL (1) | PL101198B1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5098700A (ja) * | 1973-12-31 | 1975-08-05 | ||
JPS51134899A (en) * | 1975-05-17 | 1976-11-22 | Hitachi Maxell Ltd | Processing method of magnetic powder |
JPS51146399U (ja) * | 1975-05-20 | 1976-11-24 | ||
DE2543962A1 (de) * | 1975-10-02 | 1977-04-14 | Dynamit Nobel Ag | Verbesserte eisenoxid-magnetpigmente fuer die herstellung von magnetschichten |
US4115106A (en) * | 1976-10-20 | 1978-09-19 | National Standard Company | Method for producing metallic oxide compounds |
DE2815712A1 (de) * | 1978-04-12 | 1979-10-25 | Bayer Ag | Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung |
JPS5533091A (en) * | 1979-07-26 | 1980-03-08 | Fujitsu Ltd | Method of manufacturing magnetic recording magnetic powder |
EP0028796B1 (de) * | 1979-11-13 | 1983-07-13 | Bayer Ag | Beschichtete magnetische Metall- und Legierungspigmente, Verfahren zu ihrer Herstellung und ihre Verwendung |
US5110658A (en) * | 1987-10-19 | 1992-05-05 | Konica Corporation | Magnetic recording medium |
US4888368A (en) * | 1988-05-12 | 1989-12-19 | Dow Corning Corporation | Method of inhibiting the discoloration of emulsions and discoloration resistant emulsion compositions |
DE3826770A1 (de) * | 1988-08-06 | 1990-02-08 | Bayer Ag | Nadelfoermige legierungspulver auf eisenbasis, verfahren zu ihrer herstellung sowie deren verwendung |
DE102006023244A1 (de) * | 2006-05-18 | 2007-11-22 | Lanxess Deutschland Gmbh | Oxidationsstabile Eisenoxidpigmente, Verfahren zu ihrer Herstellung sowie deren Verwendung |
EA201391493A1 (ru) * | 2011-04-12 | 2014-04-30 | Басф Се | Гидрофобные функционализированные частицы |
JP6968045B2 (ja) * | 2018-08-28 | 2021-11-17 | 富士フイルム株式会社 | β−オキシ水酸化鉄系化合物の粉体、β−オキシ水酸化鉄系化合物ゾル、ε−酸化鉄系化合物の粉体の製造方法、及び磁気記録媒体の製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2760876A (en) * | 1952-11-25 | 1956-08-28 | Siliphane Corp Of America | Water resistant coating compositions |
US2886460A (en) * | 1954-09-14 | 1959-05-12 | Du Pont | Organophilic and hydrophilic composition |
US3004859A (en) * | 1958-05-28 | 1961-10-17 | Gen Electric | Process for treating fillers |
-
1974
- 1974-07-18 US US05/489,665 patent/US4014710A/en not_active Expired - Lifetime
- 1974-07-31 PL PL1974173138A patent/PL101198B1/pl unknown
- 1974-07-31 CA CA206,018A patent/CA1039049A/en not_active Expired
- 1974-07-31 IT IT52365/74A patent/IT1018775B/it active
- 1974-07-31 JP JP8712074A patent/JPS5725967B2/ja not_active Expired
- 1974-07-31 BE BE147114A patent/BE818294A/xx not_active IP Right Cessation
- 1974-08-01 NL NLAANVRAGE7410375,A patent/NL178886C/xx not_active IP Right Cessation
- 1974-08-02 FR FR7426980A patent/FR2239508B1/fr not_active Expired
- 1974-08-02 GB GB3416574A patent/GB1455616A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1018775B (it) | 1977-10-20 |
NL178886C (nl) | 1986-06-02 |
NL178886B (nl) | 1986-01-02 |
PL101198B1 (pl) | 1978-12-30 |
GB1455616A (en) | 1976-11-17 |
DE2339142B2 (de) | 1977-04-07 |
JPS5044498A (ja) | 1975-04-21 |
FR2239508A1 (ja) | 1975-02-28 |
FR2239508B1 (ja) | 1978-02-17 |
NL7410375A (nl) | 1975-02-04 |
BE818294A (fr) | 1975-01-31 |
CA1039049A (en) | 1978-09-26 |
DE2339142A1 (de) | 1975-02-27 |
US4014710A (en) | 1977-03-29 |