JPS54156506A - Substrate for magnetic discs - Google Patents
Substrate for magnetic discsInfo
- Publication number
- JPS54156506A JPS54156506A JP6479778A JP6479778A JPS54156506A JP S54156506 A JPS54156506 A JP S54156506A JP 6479778 A JP6479778 A JP 6479778A JP 6479778 A JP6479778 A JP 6479778A JP S54156506 A JPS54156506 A JP S54156506A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fibers
- substrate
- synthetic resin
- impregnated
- solution
- 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
Abstract
PURPOSE: To make the substrate lighter in weight, stronger and more elastic than Al alloy substrates, make its surface accuracy better than conventional fiber-reinforced synthetic resin subsbtrates and obviate the collapse and cracking of the surface by reinforcing the substrate with carbon fibers.
CONSTITUTION: Carbon fibers of high strength or high elasticity desirably of a continuous shape are impregnated in the varnish form solution of the epoxy resin having been added with hardeners and curing accelerators and the solution is removed to yield the prepreg sheet of a half-cured state. The abovementioned sheet of preferably about 60% in the ratio of the carbon fibers to the thermosetting resin is sandwiched by the polyimide films which have been roughened only at one side by an aqueous solution of nitric acid. The assembly is then hot-pressed and molded in molds together with Al-made spacer rings 3, whereby the substrate for magnetic discs comprising covering both sides of the thermosetting synthetic resin 1 impregnated with the carbon fibers with the films 2 composed of thermoplastic synthetic resin may be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6479778A JPS54156506A (en) | 1978-05-30 | 1978-05-30 | Substrate for magnetic discs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6479778A JPS54156506A (en) | 1978-05-30 | 1978-05-30 | Substrate for magnetic discs |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54156506A true JPS54156506A (en) | 1979-12-10 |
Family
ID=13268577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6479778A Pending JPS54156506A (en) | 1978-05-30 | 1978-05-30 | Substrate for magnetic discs |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54156506A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020015767A (en) * | 2000-08-23 | 2002-03-02 | 강신일 | Disk Substrate For Near Field Recording Using Fiber Reinforced Plastics |
KR20020015766A (en) * | 2000-08-23 | 2002-03-02 | 강신일 | Disk substrate for hard disk drive using fiber reinforced plastics |
-
1978
- 1978-05-30 JP JP6479778A patent/JPS54156506A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020015767A (en) * | 2000-08-23 | 2002-03-02 | 강신일 | Disk Substrate For Near Field Recording Using Fiber Reinforced Plastics |
KR20020015766A (en) * | 2000-08-23 | 2002-03-02 | 강신일 | Disk substrate for hard disk drive using fiber reinforced plastics |
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