JPS6443814A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6443814A JPS6443814A JP19978387A JP19978387A JPS6443814A JP S6443814 A JPS6443814 A JP S6443814A JP 19978387 A JP19978387 A JP 19978387A JP 19978387 A JP19978387 A JP 19978387A JP S6443814 A JPS6443814 A JP S6443814A
- Authority
- JP
- Japan
- Prior art keywords
- glass substrate
- iron nitride
- recording medium
- smoothness
- protective layer
- 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
Landscapes
- Magnetic Record Carriers (AREA)
- Lubricants (AREA)
Abstract
PURPOSE:To obtain a recording medium which generates less recording errors and has excellent surface smoothness, sliding resistance and corrosion resistance by forming a magnetic layer of iron nitride directly on a glass substrate. CONSTITUTION:The magnetic layer 2 of the iron nitride such as Fe4N is formed directly on the glass substrate 1 and a protective layer 3 is provided thereon. Since this iron nitride has good adhesion, the glass substrate 1 having high hardness and surface smoothness can be used; therefore, the need for the conventional Ni-P plating layer is eliminated and the defects by the Ni-P film which occupy the majority of defects are eliminated and the recording errors can be decreased. Since the smoothness of the glass substrate 1 is high, the smoothness of the surface formed with the magnetic layer 2 and the protective layer 3 is improved as well. The iron nitride has the high adhesive power to the substrate 1 and the protective layer 3 and, therefore, the recording medium having the excellent sliding resistance is obtd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19978387A JPS6443814A (en) | 1987-08-12 | 1987-08-12 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19978387A JPS6443814A (en) | 1987-08-12 | 1987-08-12 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6443814A true JPS6443814A (en) | 1989-02-16 |
Family
ID=16413537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19978387A Pending JPS6443814A (en) | 1987-08-12 | 1987-08-12 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6443814A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG89324A1 (en) * | 1999-04-13 | 2002-06-18 | Mitsui Mining & Smelting Co | Target on sputtering for forming protective film on optical recording media and process for preparing the target |
| US7117875B2 (en) | 2002-01-25 | 2006-10-10 | L'oreal | Assembly for packaging and application of a product, in particular a make-up product |
-
1987
- 1987-08-12 JP JP19978387A patent/JPS6443814A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG89324A1 (en) * | 1999-04-13 | 2002-06-18 | Mitsui Mining & Smelting Co | Target on sputtering for forming protective film on optical recording media and process for preparing the target |
| US7117875B2 (en) | 2002-01-25 | 2006-10-10 | L'oreal | Assembly for packaging and application of a product, in particular a make-up product |
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