JPS6423720U - - Google Patents
Info
- Publication number
- JPS6423720U JPS6423720U JP1987113348U JP11334887U JPS6423720U JP S6423720 U JPS6423720 U JP S6423720U JP 1987113348 U JP1987113348 U JP 1987113348U JP 11334887 U JP11334887 U JP 11334887U JP S6423720 U JPS6423720 U JP S6423720U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- hole
- signal
- thickened
- recorded
- 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
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987113348U JPS6423720U (pt) | 1987-07-25 | 1987-07-25 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987113348U JPS6423720U (pt) | 1987-07-25 | 1987-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423720U true JPS6423720U (pt) | 1989-02-08 |
Family
ID=31353103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987113348U Pending JPS6423720U (pt) | 1987-07-25 | 1987-07-25 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423720U (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994028545A1 (fr) * | 1993-05-31 | 1994-12-08 | Sony Corporation | Substrat pour disque optique et disque optique l'utilisant |
-
1987
- 1987-07-25 JP JP1987113348U patent/JPS6423720U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994028545A1 (fr) * | 1993-05-31 | 1994-12-08 | Sony Corporation | Substrat pour disque optique et disque optique l'utilisant |