JPS57198605A - Manufacture of magnetic powder for magnetic recording medium - Google Patents
Manufacture of magnetic powder for magnetic recording mediumInfo
- Publication number
- JPS57198605A JPS57198605A JP56082881A JP8288181A JPS57198605A JP S57198605 A JPS57198605 A JP S57198605A JP 56082881 A JP56082881 A JP 56082881A JP 8288181 A JP8288181 A JP 8288181A JP S57198605 A JPS57198605 A JP S57198605A
- Authority
- JP
- Japan
- Prior art keywords
- amorphous material
- ferrite
- higher fatty
- magnetic powder
- hexagonal ferrite
- Prior art date
- 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
Links
- 239000006247 magnetic powder Substances 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 4
- 235000014113 dietary fatty acids Nutrition 0.000 abstract 3
- 229930195729 fatty acid Natural products 0.000 abstract 3
- 239000000194 fatty acid Substances 0.000 abstract 3
- -1 lecithin amine compounds Chemical class 0.000 abstract 3
- 239000002270 dispersing agent Substances 0.000 abstract 2
- 150000004665 fatty acids Chemical class 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 150000003868 ammonium compounds Chemical class 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229940067606 lecithin Drugs 0.000 abstract 1
- 235000010445 lecithin Nutrition 0.000 abstract 1
- 239000000787 lecithin Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229920000056 polyoxyethylene ether Polymers 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000011369 resultant mixture Substances 0.000 abstract 1
- 239000000344 soap Substances 0.000 abstract 1
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
- G11B5/7013—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 dispersing agent
Landscapes
- Hard Magnetic Materials (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56082881A JPS57198605A (en) | 1981-05-30 | 1981-05-30 | Manufacture of magnetic powder for magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56082881A JPS57198605A (en) | 1981-05-30 | 1981-05-30 | Manufacture of magnetic powder for magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57198605A true JPS57198605A (en) | 1982-12-06 |
| JPH0312441B2 JPH0312441B2 (mo) | 1991-02-20 |
Family
ID=13786611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56082881A Granted JPS57198605A (en) | 1981-05-30 | 1981-05-30 | Manufacture of magnetic powder for magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198605A (mo) |
-
1981
- 1981-05-30 JP JP56082881A patent/JPS57198605A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0312441B2 (mo) | 1991-02-20 |
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