JPS5489707A - Magnetic disc recording medium - Google Patents
Magnetic disc recording mediumInfo
- Publication number
- JPS5489707A JPS5489707A JP15965677A JP15965677A JPS5489707A JP S5489707 A JPS5489707 A JP S5489707A JP 15965677 A JP15965677 A JP 15965677A JP 15965677 A JP15965677 A JP 15965677A JP S5489707 A JPS5489707 A JP S5489707A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording medium
- disc recording
- carbon particles
- magnetic disc
- 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
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To improve the smoothness, lubricity, abrasion resistance, etc. of the magnetic disc recording medium by blending specific carbon particles in a magnetic coating comprising dispersing magnetic powder in an acrylamide base polymer and forming the magnetic disc recording medium by using this.
CONSTITUTION: A thermosetting magnetic coating is a copolymer of an acrylamide derivative having monomer units shown by the formula (R is H, alkyl) in main chains and methacrylic acid ester, magnetic powder and carbon particles. This is coated on a substrate and is hardened by baking, whereby the magnetic recording medium is produced. The abovementioned carbon particles which are of less than about 0.4μ in particle size are blended at 0.2 to 20 wt% to the magnetic powder.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15965677A JPS5489707A (en) | 1977-12-27 | 1977-12-27 | Magnetic disc recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15965677A JPS5489707A (en) | 1977-12-27 | 1977-12-27 | Magnetic disc recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5489707A true JPS5489707A (en) | 1979-07-17 |
Family
ID=15698462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15965677A Pending JPS5489707A (en) | 1977-12-27 | 1977-12-27 | Magnetic disc recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5489707A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062604A (en) * | 1973-10-04 | 1975-05-28 |
-
1977
- 1977-12-27 JP JP15965677A patent/JPS5489707A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062604A (en) * | 1973-10-04 | 1975-05-28 |
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