JPS5525821A - Magnetic memory substance - Google Patents
Magnetic memory substanceInfo
- Publication number
- JPS5525821A JPS5525821A JP9706578A JP9706578A JPS5525821A JP S5525821 A JPS5525821 A JP S5525821A JP 9706578 A JP9706578 A JP 9706578A JP 9706578 A JP9706578 A JP 9706578A JP S5525821 A JPS5525821 A JP S5525821A
- Authority
- JP
- Japan
- Prior art keywords
- film
- plated
- oxide
- finished
- silane coupling
- 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)
Abstract
PURPOSE: To secure the better protection for the metal magnetic thin film against the contact friction phenomenon as well as to increase the margin furthermore by eliminating the evil effect due to the unevenness caused when forming the formation process film by providing the specified protective film.
CONSTITUTION: Nonmagnetic metal layer 2 is plated on alloy disk 1 which is finished into the surface featuring a satisfactorily samll external waviness and then finished to a mirror surface. Then metal magnetic thin film medium 3 is plated on the mirror surface. Furthermore, nonmagnetic metal 4 composed of the Ni-P alloy is plated on medium 3 and then soaked into the acid solution containing the Cr oxide to form formation process film 5 composed of the Ni oxide and the Cr oxide. Then pre-process layer 6 containing the silane coupling agent, coat 7 composed of the inorganic high molecular compound containing the stress relaxing agent and through coating and drying of the poly-silicic acid containing the silane coupling agent and orientating lubricant 8 composed of alkoxysilane are provided on film 5. Thus the protective film is formed for magnetic disk 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9706578A JPS5525821A (en) | 1978-08-08 | 1978-08-08 | Magnetic memory substance |
DE2923682A DE2923682C2 (en) | 1978-06-13 | 1979-06-12 | Magnetic recording medium |
US06/047,916 US4307156A (en) | 1978-06-13 | 1979-06-12 | Magnetic record member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9706578A JPS5525821A (en) | 1978-08-08 | 1978-08-08 | Magnetic memory substance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525821A true JPS5525821A (en) | 1980-02-23 |
Family
ID=14182236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9706578A Pending JPS5525821A (en) | 1978-06-13 | 1978-08-08 | Magnetic memory substance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525821A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164432A (en) * | 1981-04-02 | 1982-10-09 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPS57186230A (en) * | 1981-05-13 | 1982-11-16 | Matsushita Electric Ind Co Ltd | Metallic thin film type magnetic recording medium and its manufacture |
JPS6113425A (en) * | 1984-06-29 | 1986-01-21 | Nec Corp | Magnetic recording medium and its production |
-
1978
- 1978-08-08 JP JP9706578A patent/JPS5525821A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164432A (en) * | 1981-04-02 | 1982-10-09 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH0445889B2 (en) * | 1981-04-02 | 1992-07-28 | Fuji Photo Film Co Ltd | |
JPS57186230A (en) * | 1981-05-13 | 1982-11-16 | Matsushita Electric Ind Co Ltd | Metallic thin film type magnetic recording medium and its manufacture |
JPH0325848B2 (en) * | 1981-05-13 | 1991-04-09 | Matsushita Electric Ind Co Ltd | |
JPS6113425A (en) * | 1984-06-29 | 1986-01-21 | Nec Corp | Magnetic recording medium and its production |
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