JPS55163632A - Manufacture of magnetic disk medium - Google Patents
Manufacture of magnetic disk mediumInfo
- Publication number
- JPS55163632A JPS55163632A JP6970479A JP6970479A JPS55163632A JP S55163632 A JPS55163632 A JP S55163632A JP 6970479 A JP6970479 A JP 6970479A JP 6970479 A JP6970479 A JP 6970479A JP S55163632 A JPS55163632 A JP S55163632A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- layer
- disk medium
- pinhole
- magnetic disk
- 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 disk medium which excels in the wear resistance and the lubricity by applying the coating material of the second layer and then the baking before the magnetic coating of the first layer is dried and then giving the polishing finish up to nearly the middle between the first and the second layers.
CONSTITUTION: The ferromagnetic coating material is applied onto disk 2 by the spin coating method in order to form the first coating 1. Thus pinhole 3 is formed on coating 1. Then the same of different coating material as or from the first layer is coated by the spin coating method before coating 1 is dried, thus forming coating 4 of the second layer. After baking coatings 1 and 4, the polishing finish is given up to about the middle of coatings 1 and 2. The polishing end position can be set to arrow (a) or (b). Coating 4 is buried in pinhole 6 or pinhole 3 on coating 1 on the coating surface received the polishing finish owing to occurrence of bubbles, and as a result gap 7 is caused. Then the lubricant "krytox" is impregnated into hole 6 and gap 7. Thus the wear resistance and the lubricity of the disk medium can be increased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6970479A JPS55163632A (en) | 1979-06-04 | 1979-06-04 | Manufacture of magnetic disk medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6970479A JPS55163632A (en) | 1979-06-04 | 1979-06-04 | Manufacture of magnetic disk medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163632A true JPS55163632A (en) | 1980-12-19 |
Family
ID=13410493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6970479A Pending JPS55163632A (en) | 1979-06-04 | 1979-06-04 | Manufacture of magnetic disk medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163632A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5990234A (en) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | Magnetic disk |
US5162161A (en) * | 1988-01-13 | 1992-11-10 | Hitachi, Ltd. | Magnetic recording medium and method for fabricating the same |
-
1979
- 1979-06-04 JP JP6970479A patent/JPS55163632A/en active Pending
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 | |
US5162161A (en) * | 1988-01-13 | 1992-11-10 | Hitachi, Ltd. | Magnetic recording medium and method for fabricating the same |
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