JPS6479932A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6479932A JPS6479932A JP23688587A JP23688587A JPS6479932A JP S6479932 A JPS6479932 A JP S6479932A JP 23688587 A JP23688587 A JP 23688587A JP 23688587 A JP23688587 A JP 23688587A JP S6479932 A JPS6479932 A JP S6479932A
- Authority
- JP
- Japan
- Prior art keywords
- film
- protective layer
- recording medium
- compd
- durability
- 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 enhance the corrosion resistance and durability of a recording medium by laminating respective protective layers consisting of a B compd. and carbon system on a magnetic layer. CONSTITUTION:A CO80Ni20 alloy is evaporated from a vapor source 7 by electron beam heating and is deposited diagonally on a PET film 13 while gaseous oxygen is blown from a nozzle 9 at the time of delivering the above-mentioned film from a roll 2 and running the film along a can 3. The B film 11 as the 1st protective layer is then deposited by evaporation continuously on the film by means of a can 4. The carbon film 10 as the 2nd protective layer is thereafter formed thereon by a high-frequency sputtering method. As a result, the corrosion preventive effect of the protective layer consisting of the B or B compd. and the wear resistance of the protective layer of the carbon system are superposed and the recording medium having the good corrosion resistance and durability is obtd.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23688587A JPS6479932A (en) | 1987-09-21 | 1987-09-21 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23688587A JPS6479932A (en) | 1987-09-21 | 1987-09-21 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6479932A true JPS6479932A (en) | 1989-03-24 |
Family
ID=17007221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23688587A Pending JPS6479932A (en) | 1987-09-21 | 1987-09-21 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6479932A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5552204A (en) * | 1995-01-13 | 1996-09-03 | International Business Machines Corporation | Magnetic disk with boron carbide overcoat layer |
JP2006351135A (en) * | 2005-06-17 | 2006-12-28 | Hoya Corp | Magnetic disk and manufacturing method for magnetic disk |
-
1987
- 1987-09-21 JP JP23688587A patent/JPS6479932A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5552204A (en) * | 1995-01-13 | 1996-09-03 | International Business Machines Corporation | Magnetic disk with boron carbide overcoat layer |
JP2006351135A (en) * | 2005-06-17 | 2006-12-28 | Hoya Corp | Magnetic disk and manufacturing method for magnetic disk |
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