JPS5577035A - Production of magnetic recording medium - Google Patents
Production of magnetic recording mediumInfo
- Publication number
- JPS5577035A JPS5577035A JP14784778A JP14784778A JPS5577035A JP S5577035 A JPS5577035 A JP S5577035A JP 14784778 A JP14784778 A JP 14784778A JP 14784778 A JP14784778 A JP 14784778A JP S5577035 A JPS5577035 A JP S5577035A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording medium
- magnetic powder
- magnetic recording
- copolymer
- 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 improve the dispersion property of magnetic powder in a magnetic layer to produce a magnetic recording medium superior in durability and reliability by using a magnetic paint obtained by dispersing magnetic powder whose surface is processed with a specific copolymer.
CONSTITUTION: Magnetic powder such as γ-Fe2O3 is soaked in the solution of a vinyl chloride-vinyl acetate copolymer (the copolymer of a density of approximately 10wt% or less is desirable) of the content of vinyl alcohol components of 8wt% or more to perform the surface processing, and after that, a dispersing liquid (magnetic paint) of this magnetic powder and an organic binder such as an urethane resin is formed. Next, the magnetic paint above is applied onto a nonmagnetic support material to form a magnetic layer according to the conventional method, thus obtaining a magnetic recording medium.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14784778A JPS5577035A (en) | 1978-12-01 | 1978-12-01 | Production of magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14784778A JPS5577035A (en) | 1978-12-01 | 1978-12-01 | Production of magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5577035A true JPS5577035A (en) | 1980-06-10 |
Family
ID=15439594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14784778A Pending JPS5577035A (en) | 1978-12-01 | 1978-12-01 | Production of magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5577035A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573224A (en) * | 1980-06-05 | 1982-01-08 | Toshiba Corp | Magnetic recording body |
US5843334A (en) * | 1994-06-20 | 1998-12-01 | Nippon Shinyaku Co., Ltd. | Method of producing emulsions and an emulsification apparatus |
-
1978
- 1978-12-01 JP JP14784778A patent/JPS5577035A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573224A (en) * | 1980-06-05 | 1982-01-08 | Toshiba Corp | Magnetic recording body |
US5843334A (en) * | 1994-06-20 | 1998-12-01 | Nippon Shinyaku Co., Ltd. | Method of producing emulsions and an emulsification apparatus |
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