JPS648511A - Production of magnetic disk - Google Patents
Production of magnetic diskInfo
- Publication number
- JPS648511A JPS648511A JP16329287A JP16329287A JPS648511A JP S648511 A JPS648511 A JP S648511A JP 16329287 A JP16329287 A JP 16329287A JP 16329287 A JP16329287 A JP 16329287A JP S648511 A JPS648511 A JP S648511A
- Authority
- JP
- Japan
- Prior art keywords
- film
- island
- shaped films
- magnetic disk
- base material
- 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)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To obtain a magnetic disk which prevents the attraction of a magnetic head slider and has high reliability by providing a hard film to a base material and providing island-shaped films to this hard film. CONSTITUTION:This disk is constituted of a base material 1 consisting of an Al-Mg alloy, the hard film 2 consisting of an Ni-P plating film, the island- shaped films 3 and a magnetic recording medium film 4 consisting of Co-Ni. A commercially marketed substrate formed by forming the hard film 2 consisting of the Ni-P plating film on the surface of the base material 1 consisting of the Al-Mg alloy and subjecting the surface to mirror finishing is used and the island-shaped films 3 are formed on this substrate, then a Co-Ni film which is the magnetic recording medium film 4 is formed by sputtering on the island-shaped films 3. The magnetic disk which prevents the attraction of the magnetic head slider and has high reliability is thereby obtd.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16329287A JPS648511A (en) | 1987-06-30 | 1987-06-30 | Production of magnetic disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16329287A JPS648511A (en) | 1987-06-30 | 1987-06-30 | Production of magnetic disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648511A true JPS648511A (en) | 1989-01-12 |
Family
ID=15771052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16329287A Pending JPS648511A (en) | 1987-06-30 | 1987-06-30 | Production of magnetic disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648511A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06342513A (en) * | 1993-05-31 | 1994-12-13 | Nec Corp | Magnetic recording medium and its production |
GB2295159A (en) * | 1994-11-21 | 1996-05-22 | Kao Corp | Magnetic recording medium |
US8347846B2 (en) | 2009-06-09 | 2013-01-08 | Toyota Jidosha Kabushiki Kaisha | Control device for internal combustion engine |
-
1987
- 1987-06-30 JP JP16329287A patent/JPS648511A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06342513A (en) * | 1993-05-31 | 1994-12-13 | Nec Corp | Magnetic recording medium and its production |
GB2295159A (en) * | 1994-11-21 | 1996-05-22 | Kao Corp | Magnetic recording medium |
GB2295159B (en) * | 1994-11-21 | 1997-04-02 | Kao Corp | Magnetic recording medium |
US5650237A (en) * | 1994-11-21 | 1997-07-22 | Kao Corporation | Magnetic recording medium having a metallic magnetic layer and an aluminum alloy underlayer |
US8347846B2 (en) | 2009-06-09 | 2013-01-08 | Toyota Jidosha Kabushiki Kaisha | Control device for internal combustion engine |
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