JPS57152528A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57152528A JPS57152528A JP3840181A JP3840181A JPS57152528A JP S57152528 A JPS57152528 A JP S57152528A JP 3840181 A JP3840181 A JP 3840181A JP 3840181 A JP3840181 A JP 3840181A JP S57152528 A JPS57152528 A JP S57152528A
- Authority
- JP
- Japan
- Prior art keywords
- acetate copolymer
- vinyl acetate
- vinyl chloride
- vinyl
- recording medium
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
- G11B5/7023—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To improve the dispersibility, packing property, etc., of magnetic powder by using a vinyl chloride-vinyl acetate copolymer having epoxy groups and a vinyl chloride-vinyl acetate copolymer having carboxyl groups in combination as binder components. CONSTITUTION:Magnetic paint which contains metallic magnetic powder, and a vinyl chloride-vinyl acetate copolymer having epoxy groups and a vinyl chloride- vinyl acetate copolymer having carboxyl groups as binder components is applied over a base. The preferable weight ratio of said copolymers in use is 9:1-1:9. Further, an isocyanate compound having a low molecular weight such as 2,4- tolylenediisocyanate is contained as a binder component to further improve the wear resistance of a magnetic layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3840181A JPS57152528A (en) | 1981-03-16 | 1981-03-16 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3840181A JPS57152528A (en) | 1981-03-16 | 1981-03-16 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57152528A true JPS57152528A (en) | 1982-09-20 |
Family
ID=12524265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3840181A Pending JPS57152528A (en) | 1981-03-16 | 1981-03-16 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57152528A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123017A (en) * | 1984-11-20 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPS6226630A (en) * | 1985-07-27 | 1987-02-04 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
-
1981
- 1981-03-16 JP JP3840181A patent/JPS57152528A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123017A (en) * | 1984-11-20 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPH0518171B2 (en) * | 1984-11-20 | 1993-03-11 | Matsushita Electric Ind Co Ltd | |
JPS6226630A (en) * | 1985-07-27 | 1987-02-04 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
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