JPS54162508A - Magnetic memory medium - Google Patents
Magnetic memory mediumInfo
- Publication number
- JPS54162508A JPS54162508A JP7191578A JP7191578A JPS54162508A JP S54162508 A JPS54162508 A JP S54162508A JP 7191578 A JP7191578 A JP 7191578A JP 7191578 A JP7191578 A JP 7191578A JP S54162508 A JPS54162508 A JP S54162508A
- Authority
- JP
- Japan
- Prior art keywords
- film
- medium
- covered
- magnetic thin
- metal magnetic
- 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 enable the protecting film to protect the metal magnetic thin film medium much better by providing a formation treatment film between the metal magnetic thin film medium and the protection film composed of inorganic high polymer compound.
CONSTITUTION: A non-magnetic alloy layer 2 is covered by plating on an alloy disc 1 having been finished to have surfaces having sufficiently small undulations and is finished to a mirror surface of less than 0.2μm in surface roughness. On this is covered by plating a metal magnetic thin film medium 3 for high density recording. Next, the disc 1 is dipped in a chromic acid solution, whereby the formation treatment film 4 composed of the oxide or Cr oxide of the medium 3 is formed. A film 5 composed of inorganic high polymer compound such as polysilicic acid containing or not containing a stress releaving agent such as silane coupling agent is provided on such film 4 and further an orientative lubricating agent 6 such as alkoxysilane fluoride is covered thereon.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7191578A JPS54162508A (en) | 1978-06-13 | 1978-06-13 | Magnetic memory medium |
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 |
---|---|---|---|
JP7191578A JPS54162508A (en) | 1978-06-13 | 1978-06-13 | Magnetic memory medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54162508A true JPS54162508A (en) | 1979-12-24 |
Family
ID=13474303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7191578A Pending JPS54162508A (en) | 1978-06-13 | 1978-06-13 | Magnetic memory medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54162508A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164430A (en) * | 1981-04-01 | 1982-10-09 | Hitachi 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 |
JPS5862823A (en) * | 1981-10-08 | 1983-04-14 | Nec Corp | Vertical magnetic storage body |
JPS60101715A (en) * | 1983-11-05 | 1985-06-05 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disc medium |
JPS63119019A (en) * | 1987-10-02 | 1988-05-23 | Fujitsu Ltd | Magnetic disk medium |
-
1978
- 1978-06-13 JP JP7191578A patent/JPS54162508A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164430A (en) * | 1981-04-01 | 1982-10-09 | Hitachi 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 |
JPH0325848B2 (en) * | 1981-05-13 | 1991-04-09 | Matsushita Electric Ind Co Ltd | |
JPS5862823A (en) * | 1981-10-08 | 1983-04-14 | Nec Corp | Vertical magnetic storage body |
JPS60101715A (en) * | 1983-11-05 | 1985-06-05 | Nippon Telegr & Teleph Corp <Ntt> | Magnetic disc medium |
JPS63119019A (en) * | 1987-10-02 | 1988-05-23 | Fujitsu Ltd | Magnetic disk medium |
JPH0311004B2 (en) * | 1987-10-02 | 1991-02-15 | Fujitsu Ltd |
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