JPS54104305A - Magnetic recording medium and production of the same - Google Patents
Magnetic recording medium and production of the sameInfo
- Publication number
- JPS54104305A JPS54104305A JP989378A JP989378A JPS54104305A JP S54104305 A JPS54104305 A JP S54104305A JP 989378 A JP989378 A JP 989378A JP 989378 A JP989378 A JP 989378A JP S54104305 A JPS54104305 A JP S54104305A
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic
- plating
- production
- same
- 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
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To eliminate the need for protection film on the magnetic plating film of a magnetic disc and reduce the adhesion to magnetic head by providing the magnetic plating film on the specific non-magnetic plating film dispersed with abrasion- resistance fine particles.
CONSTITUTION: After pretreatment such as alkaline degreasing and pickling is applied to a metal substrate 1 such as of Al, a non-magnetic Ni film 3 containing Al2O3 fine powder 12 of 1 to 3μ in particle size is formed to about 20 to 30μ in thickness by an electroless plating or electroplating method. Next, the surface of the film 3 is so smoothly polished that part of the fine particle 2 protrudes from the surface of the film 3. Next, the pretreatment such as alkaline degreasing and pickling is applied to the film 3, after which a magnetic plating film 4 is electroplated. At this time, the film 4 deposits only on the surface of the conductive film 3 and the fine particles 2 protrude from the surface of the film 4. Because of this, a magnetic head 5 does not contact the film 4 and abrasion is seldom observed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP989378A JPS54104305A (en) | 1978-02-02 | 1978-02-02 | Magnetic recording medium and production of the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP989378A JPS54104305A (en) | 1978-02-02 | 1978-02-02 | Magnetic recording medium and production of the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19969887A Division JPS6346620A (en) | 1987-08-12 | 1987-08-12 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54104305A true JPS54104305A (en) | 1979-08-16 |
JPS6149727B2 JPS6149727B2 (en) | 1986-10-30 |
Family
ID=11732800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP989378A Granted JPS54104305A (en) | 1978-02-02 | 1978-02-02 | Magnetic recording medium and production of the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54104305A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129414A (en) * | 1984-07-20 | 1986-02-10 | Tokico Ltd | Magnetic disk |
JPS6346620A (en) * | 1987-08-12 | 1988-02-27 | Hitachi Ltd | Magnetic recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4873104A (en) * | 1971-12-28 | 1973-10-02 |
-
1978
- 1978-02-02 JP JP989378A patent/JPS54104305A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4873104A (en) * | 1971-12-28 | 1973-10-02 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129414A (en) * | 1984-07-20 | 1986-02-10 | Tokico Ltd | Magnetic disk |
JPS6346620A (en) * | 1987-08-12 | 1988-02-27 | Hitachi Ltd | Magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPS6149727B2 (en) | 1986-10-30 |
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