JPS54147814A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS54147814A JPS54147814A JP5551478A JP5551478A JPS54147814A JP S54147814 A JPS54147814 A JP S54147814A JP 5551478 A JP5551478 A JP 5551478A JP 5551478 A JP5551478 A JP 5551478A JP S54147814 A JPS54147814 A JP S54147814A
- Authority
- JP
- Japan
- Prior art keywords
- ferromagnetic powder
- surface active
- binder
- active agent
- powder
- 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)
Abstract
PURPOSE: To improve the half-life of the charge quantity charged without giving influence to the strength among binders, avert the problem of deposition of peeled powder on head and further improve orientation characteristic by using the respectively specific binder and the ferromagnetic powder.
CONSTITUTION: An aqueous solution of alkyl ether type surface active agent and phosphoric acid ester type surface active agent of not more than the amount thereof and ferromagnetic powder are mixed to let the surface active agents be adsorbed on the surface of the ferromagnetic powder, after with the mixture is heated to dry. The ferromagnetic powder having undergone charging preventive treatment in this way is kneaded in the binder using the vinyl chloride-vinyl acetate copolymer plasticized by polyurethane resins of 40 wt% or under based on the total binder quantity and a solvent. The resultant magnetic caoting is coated on a suitable substrate.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5551478A JPS6032886B2 (en) | 1978-05-12 | 1978-05-12 | magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5551478A JPS6032886B2 (en) | 1978-05-12 | 1978-05-12 | magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54147814A true JPS54147814A (en) | 1979-11-19 |
JPS6032886B2 JPS6032886B2 (en) | 1985-07-31 |
Family
ID=13000792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5551478A Expired JPS6032886B2 (en) | 1978-05-12 | 1978-05-12 | magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6032886B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4379803A (en) * | 1980-10-07 | 1983-04-12 | Tdk Electronics Co., Ltd. | Magnetic recording medium |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6323890U (en) * | 1986-07-30 | 1988-02-17 |
-
1978
- 1978-05-12 JP JP5551478A patent/JPS6032886B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4379803A (en) * | 1980-10-07 | 1983-04-12 | Tdk Electronics Co., Ltd. | Magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPS6032886B2 (en) | 1985-07-31 |
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