JPH03137813A - Metallic thin film type magnetic recording medium - Google Patents
Metallic thin film type magnetic recording mediumInfo
- Publication number
- JPH03137813A JPH03137813A JP27740289A JP27740289A JPH03137813A JP H03137813 A JPH03137813 A JP H03137813A JP 27740289 A JP27740289 A JP 27740289A JP 27740289 A JP27740289 A JP 27740289A JP H03137813 A JPH03137813 A JP H03137813A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- type magnetic
- film type
- metallic thin
- magnetic 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
- 239000010409 thin films Substances 0.000 title abstract 9
- 239000010410 layers Substances 0.000 abstract 10
- 230000001681 protective Effects 0.000 abstract 5
- 239000011734 sodium Substances 0.000 abstract 4
- 229920000307 polymer substrate Polymers 0.000 abstract 3
- 238000004321 preservation Methods 0.000 abstract 2
- 239000000758 substrates Substances 0.000 abstract 2
- 229910020647 Co-O Inorganic materials 0.000 abstract 1
- 229910020704 Co—O Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- 229910052904 quartz Inorganic materials 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound 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O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910001885 silicon dioxide Inorganic materials 0.000 abstract 1
- 239000000953 sodium hydroxide Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 1
- 229910001856 sodium hydroxide Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000007740 vapor deposition Methods 0.000 abstract 1
Abstract
PURPOSE: To prevent the generation of projections at the time of preservation at and under a high temp. and high humidity and to decrease signal drop-out by having a metallic thin film type magnetic layer and a protective thin film layer on a high-polymer substrate and incorporating Na or K to the boundary between the high-polymer substrate and the metallic thin film type magnetic layer.
CONSTITUTION: This recording medium is formed of the high-polymer substrate 5, the metallic thin film type magnetic layer 6, the boundary face 7 contg. the Na or K, and the protective thin film layer 8. The substrate 5 is formed by using polyethylene terephthalate having 10μm thickness. A soln. contg. 1,000ppm SiO2 particles and 0 to 1,000ppm NaOH is applied on the surface of the substrate to form the boundary face 7 contg. the Na or K. Further, the metallic thin film type magnetic layer 6 consisting of a Co-O system is formed to 160μm thickness by a vacuum vapor deposition method thereon and a protective thin film layer consisting of a carbon system is formed as the protective thin film layer 8 at 15μm thickness thereon by a CVD method. The boundary face 7 contg. the Na or K is interposed between the magnetic layer 6 and the protective film layer 8 in such a manner, by which the generation of the projections at the time of preservation at and under a high temp. and high humidity is prevented and the signal drop-outs are correspondingly drastically decreased.
COPYRIGHT: (C)1991,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27740289A JPH03137813A (en) | 1989-10-24 | 1989-10-24 | Metallic thin film type magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27740289A JPH03137813A (en) | 1989-10-24 | 1989-10-24 | Metallic thin film type magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03137813A true JPH03137813A (en) | 1991-06-12 |
Family
ID=17583047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27740289A Pending JPH03137813A (en) | 1989-10-24 | 1989-10-24 | Metallic thin film type magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03137813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8503863B2 (en) | 2007-12-18 | 2013-08-06 | Panasonic Corporation | Image reproduction device, image reproduction method, and image reproduction program |
-
1989
- 1989-10-24 JP JP27740289A patent/JPH03137813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8503863B2 (en) | 2007-12-18 | 2013-08-06 | Panasonic Corporation | Image reproduction device, image reproduction method, and image reproduction program |
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