JPS55139632A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS55139632A JPS55139632A JP4642979A JP4642979A JPS55139632A JP S55139632 A JPS55139632 A JP S55139632A JP 4642979 A JP4642979 A JP 4642979A JP 4642979 A JP4642979 A JP 4642979A JP S55139632 A JPS55139632 A JP S55139632A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- recording medium
- resistance
- magnetic recording
- improved
- 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 electromagnetic conversion characteristics, durability, etc., by using a copolymer of a vinyl chloride-vinyl propionate system, urethane prepolymer and cellulose resin as binder components of magnetic powder applied on a base.
CONSTITUTION: Fixed volumes of a copohmer of a vinyl chloride-vinyl propionate system, urethane prepolymer and cellulose resin are blended and a polyisocyanate compound of low molecular weight is added at need to obtain binder components, which are mixed and dispersed in an adequate organic solvent together with magnetic powder such as Fe2O3 containing Co. This magnetic coating is applied on a base of a polyester film, etc., and dried. Consequently, the resistance to wear of the magnetic layer is improved and its thermal resistance and moisture resistance are both improved, so that a stable magnetic recording medium can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4642979A JPS55139632A (en) | 1979-04-16 | 1979-04-16 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4642979A JPS55139632A (en) | 1979-04-16 | 1979-04-16 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55139632A true JPS55139632A (en) | 1980-10-31 |
Family
ID=12746899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4642979A Pending JPS55139632A (en) | 1979-04-16 | 1979-04-16 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139632A (en) |
-
1979
- 1979-04-16 JP JP4642979A patent/JPS55139632A/en active Pending
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