JPS6442023A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6442023A JPS6442023A JP19739387A JP19739387A JPS6442023A JP S6442023 A JPS6442023 A JP S6442023A JP 19739387 A JP19739387 A JP 19739387A JP 19739387 A JP19739387 A JP 19739387A JP S6442023 A JPS6442023 A JP S6442023A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- substrate
- recording medium
- buffer layer
- magnetic recording
- 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 reduce weight and cost while maintaining excellent magnetic characteristics by interposing a silicon nitride film as a buffer layer between a plastic substrate and nonmagnetic metallic underlying layer. CONSTITUTION:The buffer layer 6 consisting of the thin silicon nitride (Si3N4) film, the nonmagnetic metallic underlying layer 3, a magnetic layer 4 and a protective lubricating layer 5 are continuously formed in this order by sputtering on the nonmagnetic substrate 1a consisting of plastic, etc. Namely, the thin silicon oxide film is formed by sputtering so as to be interposed as the buffer layer 6 and, therefore, the gaseous release of the moisture, etc., occluded in the substrate 1a is prevented. The magnetic recording medium which is lighter in weight and lower in cost than heretofore is thereby obtd. while the good magnetic characteristics are maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19739387A JPS6442023A (en) | 1987-08-07 | 1987-08-07 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19739387A JPS6442023A (en) | 1987-08-07 | 1987-08-07 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6442023A true JPS6442023A (en) | 1989-02-14 |
Family
ID=16373757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19739387A Pending JPS6442023A (en) | 1987-08-07 | 1987-08-07 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6442023A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466524A (en) * | 1992-05-07 | 1995-11-14 | Kabushiki Kaisha Kobe Seiko Sho | Barium hexaferrite-silicon nitride-carbon magnetic recording medium |
| US5567523A (en) * | 1994-10-19 | 1996-10-22 | Kobe Steel Research Laboratories, Usa, Applied Electronics Center | Magnetic recording medium comprising a carbon substrate, a silicon or aluminum nitride sub layer, and a barium hexaferrite magnetic layer |
| US6294031B1 (en) * | 1997-09-05 | 2001-09-25 | Topy Kogyo Kabushiki Kaisha | Production method of a heat-treated steel member |
| US6911256B2 (en) | 2003-06-30 | 2005-06-28 | Imation Corp. | Buffer layers for magnetic media with a plastic substrate |
-
1987
- 1987-08-07 JP JP19739387A patent/JPS6442023A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466524A (en) * | 1992-05-07 | 1995-11-14 | Kabushiki Kaisha Kobe Seiko Sho | Barium hexaferrite-silicon nitride-carbon magnetic recording medium |
| US5567523A (en) * | 1994-10-19 | 1996-10-22 | Kobe Steel Research Laboratories, Usa, Applied Electronics Center | Magnetic recording medium comprising a carbon substrate, a silicon or aluminum nitride sub layer, and a barium hexaferrite magnetic layer |
| US6294031B1 (en) * | 1997-09-05 | 2001-09-25 | Topy Kogyo Kabushiki Kaisha | Production method of a heat-treated steel member |
| US6911256B2 (en) | 2003-06-30 | 2005-06-28 | Imation Corp. | Buffer layers for magnetic media with a plastic substrate |
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