JPS57198541A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57198541A JPS57198541A JP56082649A JP8264981A JPS57198541A JP S57198541 A JPS57198541 A JP S57198541A JP 56082649 A JP56082649 A JP 56082649A JP 8264981 A JP8264981 A JP 8264981A JP S57198541 A JPS57198541 A JP S57198541A
- Authority
- JP
- Japan
- Prior art keywords
- active agent
- surface active
- recording medium
- magnetic recording
- perfluoroalkyl
- 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
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
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/722—Protective coatings, e.g. anti-static or antifriction containing an anticorrosive material
-
- 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
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
- G11B5/7253—Fluorocarbon lubricant
Abstract
PURPOSE:To improve corrosion resistance, running characteristics, etc., by allowing the surface of a metallic ferromagnetic layer to adsorb a surface active agent which contains fluorine. CONSTITUTION:On a nonmagnetic substrate, a ferromagnetic thin film of iron, cobalt, nickel, or their alloy is provided by vapor deposition, sputtering, electroplating, etc. The surface is coated with a solution of a fluorine-containing surface active agent prepared by adding polyethylene oxides to ammonium salt of perfluoroalkyl carboxylic acids, ammonium salt of perfluoroalkyl sulfonic acids, and perfluoroalkyl groups to cause the chemical adsorption of said surface active agent to the surface of the magnetic thin film, thus obtaining a magnetic recording medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082649A JPS57198541A (en) | 1981-05-29 | 1981-05-29 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082649A JPS57198541A (en) | 1981-05-29 | 1981-05-29 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57198541A true JPS57198541A (en) | 1982-12-06 |
Family
ID=13780271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56082649A Pending JPS57198541A (en) | 1981-05-29 | 1981-05-29 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57198541A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59107428A (en) * | 1982-12-10 | 1984-06-21 | Seiko Epson Corp | Formation of lubricating layer for magnetic recording medium |
EP0123854A2 (en) * | 1983-04-29 | 1984-11-07 | International Business Machines Corporation | Process for chemically bonding lubricant to an information carrier |
EP0131923A2 (en) * | 1983-07-14 | 1985-01-23 | Magnox Incorporated (DE) | Coating compositions |
JPS60125928A (en) * | 1983-12-09 | 1985-07-05 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
US4613520A (en) * | 1983-07-14 | 1986-09-23 | Hercules Incorporated | Coating compositions |
US4639815A (en) * | 1983-04-28 | 1987-01-27 | Fuji Photo Film Co., Ltd. | Magnetic recording medium with chromiumiron protective layer |
JPS6371923A (en) * | 1986-09-13 | 1988-04-01 | Sony Corp | Magnetic recording medium |
US4892789A (en) * | 1984-12-25 | 1990-01-09 | Tdk Corporation | Magnetic recording medium |
WO2015025875A1 (en) * | 2013-08-21 | 2015-02-26 | デクセリアルズ株式会社 | Lubricant agent and magnetic recording medium |
-
1981
- 1981-05-29 JP JP56082649A patent/JPS57198541A/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59107428A (en) * | 1982-12-10 | 1984-06-21 | Seiko Epson Corp | Formation of lubricating layer for magnetic recording medium |
JPH0430084B2 (en) * | 1982-12-10 | 1992-05-20 | ||
US4639815A (en) * | 1983-04-28 | 1987-01-27 | Fuji Photo Film Co., Ltd. | Magnetic recording medium with chromiumiron protective layer |
EP0123854A2 (en) * | 1983-04-29 | 1984-11-07 | International Business Machines Corporation | Process for chemically bonding lubricant to an information carrier |
US4505990A (en) * | 1983-07-14 | 1985-03-19 | Hercules Incorporated | Coating compositions |
US4613520A (en) * | 1983-07-14 | 1986-09-23 | Hercules Incorporated | Coating compositions |
EP0131923A2 (en) * | 1983-07-14 | 1985-01-23 | Magnox Incorporated (DE) | Coating compositions |
JPS60125928A (en) * | 1983-12-09 | 1985-07-05 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPH0547890B2 (en) * | 1983-12-09 | 1993-07-20 | Matsushita Electric Ind Co Ltd | |
US4892789A (en) * | 1984-12-25 | 1990-01-09 | Tdk Corporation | Magnetic recording medium |
JPS6371923A (en) * | 1986-09-13 | 1988-04-01 | Sony Corp | Magnetic recording medium |
WO2015025875A1 (en) * | 2013-08-21 | 2015-02-26 | デクセリアルズ株式会社 | Lubricant agent and magnetic recording medium |
JP2015040244A (en) * | 2013-08-21 | 2015-03-02 | デクセリアルズ株式会社 | Lubricant and magnetic recording medium |
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