JPS5481805A - Production of magnetic disc - Google Patents
Production of magnetic discInfo
- Publication number
- JPS5481805A JPS5481805A JP14954677A JP14954677A JPS5481805A JP S5481805 A JPS5481805 A JP S5481805A JP 14954677 A JP14954677 A JP 14954677A JP 14954677 A JP14954677 A JP 14954677A JP S5481805 A JPS5481805 A JP S5481805A
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- magnetic
- disc
- coating
- oxide
- 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
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Abstract
PURPOSE: To achieve the increase in the strength of the disc without causing the breadown of magnetic heads by baking and hardening the coating film formed of magnetic oxide and thermosetting resin in an inert gas.
CONSTITUTION: A thermosetting resin of acrylic or epoxy base is put togenther with a magnetic oxide such as gamm-iron oxide or the like in a coating and the mixture is thinly and evenly coated on a substrate such as of aluminum disc by spin coating or the like, whereby the coating film of the magnetic layer is formed. Thereafter, the coating film is subjected to orientation treatment or the like, and further this coating film is put together with the substrate in a high temperature furnace and is heated while an inert gas such as nitrogen gas or the like is being supplied whereby it is baked, heat treated and hardened. This increases the strength of the coating film of the magnetic disc. Since additives such as hard alumina, silica or the like are not contained, the breakdown of magnetic heads may be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14954677A JPS6016007B2 (en) | 1977-12-13 | 1977-12-13 | Manufacturing method of magnetic disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14954677A JPS6016007B2 (en) | 1977-12-13 | 1977-12-13 | Manufacturing method of magnetic disk |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5481805A true JPS5481805A (en) | 1979-06-29 |
JPS6016007B2 JPS6016007B2 (en) | 1985-04-23 |
Family
ID=15477505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14954677A Expired JPS6016007B2 (en) | 1977-12-13 | 1977-12-13 | Manufacturing method of magnetic disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6016007B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5737804A (en) * | 1980-08-18 | 1982-03-02 | Nec Corp | Medium for magnetic disk and manufacture thereof |
JPS5933627A (en) * | 1982-08-16 | 1984-02-23 | Hitachi Maxell Ltd | Manufacture of magnetic disc |
-
1977
- 1977-12-13 JP JP14954677A patent/JPS6016007B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5737804A (en) * | 1980-08-18 | 1982-03-02 | Nec Corp | Medium for magnetic disk and manufacture thereof |
JPS5933627A (en) * | 1982-08-16 | 1984-02-23 | Hitachi Maxell Ltd | Manufacture of magnetic disc |
Also Published As
Publication number | Publication date |
---|---|
JPS6016007B2 (en) | 1985-04-23 |
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