JPS563435A - Manufacture of magnetic recording medium - Google Patents
Manufacture of magnetic recording mediumInfo
- Publication number
- JPS563435A JPS563435A JP7669979A JP7669979A JPS563435A JP S563435 A JPS563435 A JP S563435A JP 7669979 A JP7669979 A JP 7669979A JP 7669979 A JP7669979 A JP 7669979A JP S563435 A JPS563435 A JP S563435A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording medium
- magnetic recording
- film
- paraffin
- 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
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To obtain a magnetic recording medium which excels in the surface lubricating properties and the durability, by coating the magnetic coating material containing a specific amount of paraffin to the solid component such as the magnetic powder, the binder or the like and then decomposing and then evaporating the paraffin at the heating and solidifying time.
CONSTITUTION: The magnetic coating material, containing the liquid paraffin having 500W600 average molecular weight with 2.5W15wt% to the solid component such as the magnetic powder, the binder or the like, is coated on the supporter of the Al disk, etc. Then it is cured by heating at about 250°C. In that case, the liquid paraffin is decomposed and evaporated to cause the micropores to the magnetic film. The surface of the magnetic film thus obtained is polished up to a fixed thickness of the film to obtain a magnetic recording medium. Then the "Freon" solution of the lubricant such as the perfluoroalkyl polyether or the like is coated on the magnetic film of the recording medium and then undergoes the heat treatment at about 200°C to secure the trapping of the lubricant within the micropores. In this way, a magnetic recording medium having the excellent surface libricating properties and durability is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7669979A JPS563435A (en) | 1979-06-20 | 1979-06-20 | Manufacture of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7669979A JPS563435A (en) | 1979-06-20 | 1979-06-20 | Manufacture of magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS563435A true JPS563435A (en) | 1981-01-14 |
| JPS6156561B2 JPS6156561B2 (en) | 1986-12-03 |
Family
ID=13612739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7669979A Granted JPS563435A (en) | 1979-06-20 | 1979-06-20 | Manufacture of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS563435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990234A (en) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | Magnetic disk |
| JPS6010419A (en) * | 1983-06-27 | 1985-01-19 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Magnetographic element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53141003A (en) * | 1977-05-16 | 1978-12-08 | Hitachi Ltd | Production of magnetic disc |
-
1979
- 1979-06-20 JP JP7669979A patent/JPS563435A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53141003A (en) * | 1977-05-16 | 1978-12-08 | Hitachi Ltd | Production of magnetic disc |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990234A (en) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | Magnetic disk |
| JPH056736B2 (en) * | 1982-11-15 | 1993-01-27 | Hitachi Ltd | |
| JPS6010419A (en) * | 1983-06-27 | 1985-01-19 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Magnetographic element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6156561B2 (en) | 1986-12-03 |
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