JPS5725921A - Manufacturing device for disk - Google Patents
Manufacturing device for diskInfo
- Publication number
- JPS5725921A JPS5725921A JP10216180A JP10216180A JPS5725921A JP S5725921 A JPS5725921 A JP S5725921A JP 10216180 A JP10216180 A JP 10216180A JP 10216180 A JP10216180 A JP 10216180A JP S5725921 A JPS5725921 A JP S5725921A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- disk
- resin
- contracted
- hardened
- 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
- Manufacturing Optical Record Carriers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To prevent the occurrence of defects due to the contraction strain when resin is hardened by constituting the part of a disk mold which contacts with the outer periphery of the disk by the material which can be extended and contracted.
CONSTITUTION: On a circular base plate 6, wherein convex part 7 is provided at the central part, is placed a frame 8 comprising a ring shaped raw material, which can be extended and contracted and defines the outer periphery of the disk. A stamper 9 is placed at a bottom 11 formed by said frame. Ultraviolet hardening type resin is dropped on the stamper 9, and an ultraviolet-transmitting compressing plate 14 is compressed. Then the ultraviolet ray is irradiated and the resin 12 is hardened. Even though the resin 12 is contracted when it is hardened, the frame 8 follows it because the frame has extending and contracting property, and the occurrence of the defects due to the contraction strain is avoided. As for the raw material for the frame 8, polypropylene, polyester, and the like are recommendable.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10216180A JPS5725921A (en) | 1980-07-24 | 1980-07-24 | Manufacturing device for disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10216180A JPS5725921A (en) | 1980-07-24 | 1980-07-24 | Manufacturing device for disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5725921A true JPS5725921A (en) | 1982-02-10 |
Family
ID=14319993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10216180A Pending JPS5725921A (en) | 1980-07-24 | 1980-07-24 | Manufacturing device for disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5725921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5184063A (en) * | 1975-01-20 | 1976-07-23 | Mc Graw Edison Co | Kondensa oyobi sonoseizohoho |
| JPS62101438A (en) * | 1985-10-30 | 1987-05-11 | 大日本印刷株式会社 | Manufacture of hologram decorative resin molded shape |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54128356A (en) * | 1978-03-28 | 1979-10-04 | Asahi Optical Co Ltd | Composite lens and method of fabricating same |
-
1980
- 1980-07-24 JP JP10216180A patent/JPS5725921A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54128356A (en) * | 1978-03-28 | 1979-10-04 | Asahi Optical Co Ltd | Composite lens and method of fabricating same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5184063A (en) * | 1975-01-20 | 1976-07-23 | Mc Graw Edison Co | Kondensa oyobi sonoseizohoho |
| JPS62101438A (en) * | 1985-10-30 | 1987-05-11 | 大日本印刷株式会社 | Manufacture of hologram decorative resin molded shape |
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