JPS54147812A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS54147812A JPS54147812A JP5551278A JP5551278A JPS54147812A JP S54147812 A JPS54147812 A JP S54147812A JP 5551278 A JP5551278 A JP 5551278A JP 5551278 A JP5551278 A JP 5551278A JP S54147812 A JPS54147812 A JP S54147812A
- Authority
- JP
- Japan
- Prior art keywords
- ferromagnetic powder
- binder
- active agent
- powder
- surface active
- 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 half-life of the charge quantity charged without giving influence to the strength among binders, avert the problem of deposition of the peeled powder on head and further improve orientation characteristics by using respectively specific binder and ferromagnetic powder.
CONSTITUTION: An aqueous solution of alkyl ether type surface active agent and ferromagnetic powder are mixed to let the surface active agent be adsorbed on the surface of the ferromagnetic powder, after which the mixture is heated to dry. The ferromagnetic powder having undergone charging preventive treatment in this way is kneaded in the binder rsing the vinyl chloride-vinyl acetate copolymer plasticized by polyurethane resins of 40 wt% or under based on the total weight of the binder and a solvent. The resultant magnetic coating is coated on a suitable substrate.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5551278A JPS54147812A (en) | 1978-05-12 | 1978-05-12 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5551278A JPS54147812A (en) | 1978-05-12 | 1978-05-12 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54147812A true JPS54147812A (en) | 1979-11-19 |
Family
ID=13000733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5551278A Pending JPS54147812A (en) | 1978-05-12 | 1978-05-12 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54147812A (en) |
-
1978
- 1978-05-12 JP JP5551278A patent/JPS54147812A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5744227A (en) | Magnetic recording medium | |
JPS57133521A (en) | Magnetic recording medium | |
JPS5658135A (en) | Magnetic recording medium | |
JPS54151009A (en) | Magnetic recording medium | |
JPS5515279A (en) | Processing method for magnetic powder | |
JPS54147814A (en) | Magnetic recording medium | |
JPS54147812A (en) | Magnetic recording medium | |
JPS54147816A (en) | Magnetic recording medium | |
JPS5570936A (en) | Magnetic recording media | |
JPS5654637A (en) | Magnetic recording medium | |
JPS5315802A (en) | High density magnetic recording material | |
JPS54147815A (en) | Magnetic recording medium | |
JPS57169926A (en) | Magnetic recording medium | |
JPS51140635A (en) | Carrier coating composition for electrostatic photography | |
JPS54147811A (en) | Magnetic recording medium | |
JPS54147813A (en) | Magnetic recording medium | |
JPS54151008A (en) | Magnetic coating for magnetic recording media | |
JPS5421729A (en) | Electrophotographic carrier material | |
JPS5532252A (en) | Magnetic recording medium | |
JPS54137302A (en) | Magnetic recording medium | |
JPS54127438A (en) | Water-dispersed type thermosetting film composition | |
JPS52104543A (en) | Coating compositions | |
JPS56130830A (en) | Magnetic recording medium | |
JPS5677932A (en) | Magnetic recording medium | |
JPS5577035A (en) | Production of magnetic recording medium |