JPS5651025A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5651025A JPS5651025A JP12749879A JP12749879A JPS5651025A JP S5651025 A JPS5651025 A JP S5651025A JP 12749879 A JP12749879 A JP 12749879A JP 12749879 A JP12749879 A JP 12749879A JP S5651025 A JPS5651025 A JP S5651025A
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- magnetic
- recording medium
- binder
- coating film
- 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
Abstract
PURPOSE: To increase the SN ratio, by coating a magnetic coating film in which a specific carbon black is combined with a specific binder and kneaded with magnetic powder, on a substrate.
CONSTITUTION: A carbon black containing 3wt% or more volatile matter is kneaded with a magnetic powder by using a binder having hydroxyl group and this is coated on a substrate to form magnetic coating film. Thus, the dispersibility of the carbon black in the binder is improved, allowing to improve the smoothness of the surface of magnetic coating film, and even if the amount of carbon black used is more, the SN ratio of the magnetic recording medium can be increased.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12749879A JPS5651025A (en) | 1979-10-02 | 1979-10-02 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12749879A JPS5651025A (en) | 1979-10-02 | 1979-10-02 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5651025A true JPS5651025A (en) | 1981-05-08 |
JPH026131B2 JPH026131B2 (en) | 1990-02-07 |
Family
ID=14961449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12749879A Granted JPS5651025A (en) | 1979-10-02 | 1979-10-02 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5651025A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS595429A (en) * | 1982-06-30 | 1984-01-12 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS5919234A (en) * | 1982-07-26 | 1984-01-31 | Fuji Photo Film Co Ltd | Magnetic recording body |
JPS5975432A (en) * | 1982-10-22 | 1984-04-28 | Fuji Photo Film Co Ltd | Magnetic recording body |
-
1979
- 1979-10-02 JP JP12749879A patent/JPS5651025A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS595429A (en) * | 1982-06-30 | 1984-01-12 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS6331856B2 (en) * | 1982-06-30 | 1988-06-27 | Hitachi Maxell | |
JPS5919234A (en) * | 1982-07-26 | 1984-01-31 | Fuji Photo Film Co Ltd | Magnetic recording body |
JPH0479057B2 (en) * | 1982-07-26 | 1992-12-14 | Fuji Photo Film Co Ltd | |
JPS5975432A (en) * | 1982-10-22 | 1984-04-28 | Fuji Photo Film Co Ltd | Magnetic recording body |
JPH0479059B2 (en) * | 1982-10-22 | 1992-12-14 | Fuji Photo Film Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPH026131B2 (en) | 1990-02-07 |
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