JPS5584037A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5584037A JPS5584037A JP15957678A JP15957678A JPS5584037A JP S5584037 A JPS5584037 A JP S5584037A JP 15957678 A JP15957678 A JP 15957678A JP 15957678 A JP15957678 A JP 15957678A JP S5584037 A JPS5584037 A JP S5584037A
- Authority
- JP
- Japan
- Prior art keywords
- silicone oil
- powder
- recording medium
- magnetic recording
- soaked
- 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.)
- Pending
Links
Abstract
PURPOSE: To obtain a magnetic recording medium featuring the narrow magnetism keeping power distribution width and small aging of the characteristics by coating the secific ferromagneic metal powder with the silicone oil film formed on the surface onto the substrate via the binder of the mixture of the isocyanate and the functional group content vinyl chloride - vinyl acetate copolymer.
CONSTITUTION: The iron oxide powder (such as the α-Fe2O3 powder obtained by heating and dehydrating the α-oxy-iron hydroxide obtained from the alkaline solution) is soaked into the silicone oil solution to receive the heat reduction to obtain the ferromagnetic metal powder. This magnetic powder is soaked into the silicone oil solution and then dried at about 200W300°C to form the silicone oil film on the surface of the magnetic powder to be then coated on the substrate along with the mixture of the isocyanate compound and the vinyl chloride-vinyl acetate copolymer containing the hydroxyl group or the carboxyl group in the molecule. Thus the magnetic recording medium is obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15957678A JPS5584037A (en) | 1978-12-20 | 1978-12-20 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15957678A JPS5584037A (en) | 1978-12-20 | 1978-12-20 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5584037A true JPS5584037A (en) | 1980-06-24 |
Family
ID=15696723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15957678A Pending JPS5584037A (en) | 1978-12-20 | 1978-12-20 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5584037A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52154607A (en) * | 1976-05-20 | 1977-12-22 | Hitachi Maxell | Magnetic recording media |
JPS52155398A (en) * | 1976-05-20 | 1977-12-23 | Hitachi Maxell | Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof |
JPS535797A (en) * | 1976-07-05 | 1978-01-19 | Hitachi Maxell | Metallic magnetic powder for magnetic recording which has excellent oxidation stability and method of manufacture thereof |
-
1978
- 1978-12-20 JP JP15957678A patent/JPS5584037A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52154607A (en) * | 1976-05-20 | 1977-12-22 | Hitachi Maxell | Magnetic recording media |
JPS52155398A (en) * | 1976-05-20 | 1977-12-23 | Hitachi Maxell | Metallic magneticcpowder for magnetic recording which has excellent oxidation stability and method of manufacture thereof |
JPS535797A (en) * | 1976-07-05 | 1978-01-19 | Hitachi Maxell | Metallic magnetic powder for magnetic recording which has excellent oxidation stability and method of manufacture thereof |
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