JPS57138036A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57138036A JPS57138036A JP56024439A JP2443981A JPS57138036A JP S57138036 A JPS57138036 A JP S57138036A JP 56024439 A JP56024439 A JP 56024439A JP 2443981 A JP2443981 A JP 2443981A JP S57138036 A JPS57138036 A JP S57138036A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- film
- corrosion
- plastic film
- recording medium
- 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
- 230000005291 magnetic effect Effects 0.000 title abstract 2
- 239000010409 thin film Substances 0.000 abstract 10
- 239000002985 plastic film Substances 0.000 abstract 5
- 229920006255 plastic film Polymers 0.000 abstract 5
- 230000007797 corrosion Effects 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 abstract 4
- 230000005294 ferromagnetic effect Effects 0.000 abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000010408 film Substances 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 238000007740 vapor deposition Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To improve corrosion of a magnetic recording medium easily, by laminating a ferromagnetic thin film on a plastic film via a corrosion-resistant thin film. CONSTITUTION:A corrosion-resistant thin film, preferably an alpha-Fe2-deltaO3 (0<=delta<=1) thin film 4 is formed on the surface 3 of a plastic film 2, and a ferromagnetic thin film 1 is formed on this thin film 4. The thin film 4 is a film where Fe is evaporated and laminated by controlling the temperature of the plastic film 2 and the amount of oxygen, the vapor deposition speed in oxygen atmosphere. Even if water molecules already incorporated in the plastic film 2 appear on the surface 3 of the plastic film 2, since the chemically very stable thin film 4 is formed on the surface 3, the movement of water molecules to the ferromagnetic thin film 1 is interrupted, consequently the corrosion of the ferromagnetic thin film can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56024439A JPS57138036A (en) | 1981-02-20 | 1981-02-20 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56024439A JPS57138036A (en) | 1981-02-20 | 1981-02-20 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57138036A true JPS57138036A (en) | 1982-08-26 |
Family
ID=12138172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56024439A Pending JPS57138036A (en) | 1981-02-20 | 1981-02-20 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57138036A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4969354A (en) * | 1988-07-08 | 1990-11-13 | Nippondenso Co., Ltd. | Intake pipe pressure detecting device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5271210A (en) * | 1975-12-11 | 1977-06-14 | Nec Corp | Iron oxide magnetic recording medium and its production |
JPS531505A (en) * | 1976-06-28 | 1978-01-09 | Hitachi Ltd | High density information recording medium and preparation thereof |
-
1981
- 1981-02-20 JP JP56024439A patent/JPS57138036A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5271210A (en) * | 1975-12-11 | 1977-06-14 | Nec Corp | Iron oxide magnetic recording medium and its production |
JPS531505A (en) * | 1976-06-28 | 1978-01-09 | Hitachi Ltd | High density information recording medium and preparation thereof |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4969354A (en) * | 1988-07-08 | 1990-11-13 | Nippondenso Co., Ltd. | Intake pipe pressure detecting device |
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