JPS6417220A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6417220A JPS6417220A JP17240187A JP17240187A JPS6417220A JP S6417220 A JPS6417220 A JP S6417220A JP 17240187 A JP17240187 A JP 17240187A JP 17240187 A JP17240187 A JP 17240187A JP S6417220 A JPS6417220 A JP S6417220A
- Authority
- JP
- Japan
- Prior art keywords
- planar
- powder
- inorg
- ratio
- 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.)
- Granted
Links
Abstract
PURPOSE:To provide a magnetic recording medium which has excellent electromagnetic conversion characteristics particularly at short wavelengths and has excellent traveling durability and more particularly still durability by specifying the relation between the shapes and planar ratios of planar barium ferrite ferromagnetic powder and planar inorg. powder in a magnetic layer. CONSTITUTION:The planar barium ferrite ferromagnetic powder having 0.01-0.5mum particle size and the planar inorg. powder are incorporated into the magnetic layer and the ratio (R=Rm/Rn) between the planar ratio (Rm) of the ferromagnetic powder and the planar ratio (Rn) of the inorg. powder is specified to the value within a 0.1-1.0 range. The planar barium ferrite ferromagnetic powder is hexagonal and has preferably 2-15 planar ratio (Rm). The planar inorg. powder is preferably the inorg. powder having 0.2-0.8mum particle size and 10-30 planar ratio (Rn). The magnetic recording medium which excels in both the electromagnetic conversion characteristics and the running durability and still durability and wears a magnetic head to an extremely less extent is thereby obtd.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17240187A JPH0727630B2 (en) | 1987-07-10 | 1987-07-10 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17240187A JPH0727630B2 (en) | 1987-07-10 | 1987-07-10 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6417220A true JPS6417220A (en) | 1989-01-20 |
JPH0727630B2 JPH0727630B2 (en) | 1995-03-29 |
Family
ID=15941263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17240187A Expired - Fee Related JPH0727630B2 (en) | 1987-07-10 | 1987-07-10 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0727630B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04241224A (en) * | 1991-01-10 | 1992-08-28 | Fuji Photo Film Co Ltd | Magnetic recording medium and its production |
-
1987
- 1987-07-10 JP JP17240187A patent/JPH0727630B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04241224A (en) * | 1991-01-10 | 1992-08-28 | Fuji Photo Film Co Ltd | Magnetic recording medium and its production |
Also Published As
Publication number | Publication date |
---|---|
JPH0727630B2 (en) | 1995-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |