JPS55129935A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS55129935A JPS55129935A JP3581679A JP3581679A JPS55129935A JP S55129935 A JPS55129935 A JP S55129935A JP 3581679 A JP3581679 A JP 3581679A JP 3581679 A JP3581679 A JP 3581679A JP S55129935 A JPS55129935 A JP S55129935A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- recording medium
- magnetic
- magnetic recording
- granular
- 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 obtain a magnetic recording medium which is superior in resistance to wear and weras a magnetic head little, by mixing nonmagnetic powder of a Mohs hardness of 9 or more and granular α iron oxide powder to form a magnetic layer.
CONSTITUTION: Granular α iron oxide powder and nonmagnetic powder (for example, Cr2O3 powder and Al2O3 powder) of a Mohs hardness of 9 or more are mixed in the proportions of approximately weight ratio 1:0.2W1 and are used as a reinforcement additive, and the reinforcement additive above of 0.5W10wt% is mixed for magnetic powder to form a magnetic layer.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54035816A JPS5845088B2 (en) | 1979-03-26 | 1979-03-26 | magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54035816A JPS5845088B2 (en) | 1979-03-26 | 1979-03-26 | magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55129935A true JPS55129935A (en) | 1980-10-08 |
JPS5845088B2 JPS5845088B2 (en) | 1983-10-07 |
Family
ID=12452452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54035816A Expired JPS5845088B2 (en) | 1979-03-26 | 1979-03-26 | magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845088B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57179945A (en) * | 1981-04-28 | 1982-11-05 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPS59144036A (en) * | 1983-02-07 | 1984-08-17 | Hitachi Maxell Ltd | Magnetic recording medium |
US5030332A (en) * | 1990-04-19 | 1991-07-09 | Massachusetts Institute Of Technology | Method for making magnetic oxide precipitates |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60123267U (en) * | 1984-01-27 | 1985-08-20 | 株式会社 エイチ・エス | clear leaf holder |
JPH0563882U (en) * | 1992-02-07 | 1993-08-24 | ユニタック株式会社 | Spelling tool |
-
1979
- 1979-03-26 JP JP54035816A patent/JPS5845088B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57179945A (en) * | 1981-04-28 | 1982-11-05 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH0353687B2 (en) * | 1981-04-28 | 1991-08-15 | Fuji Photo Film Co Ltd | |
JPS59144036A (en) * | 1983-02-07 | 1984-08-17 | Hitachi Maxell Ltd | Magnetic recording medium |
US5030332A (en) * | 1990-04-19 | 1991-07-09 | Massachusetts Institute Of Technology | Method for making magnetic oxide precipitates |
Also Published As
Publication number | Publication date |
---|---|
JPS5845088B2 (en) | 1983-10-07 |
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