JPH0159919U - - Google Patents
Info
- Publication number
- JPH0159919U JPH0159919U JP1987152359U JP15235987U JPH0159919U JP H0159919 U JPH0159919 U JP H0159919U JP 1987152359 U JP1987152359 U JP 1987152359U JP 15235987 U JP15235987 U JP 15235987U JP H0159919 U JPH0159919 U JP H0159919U
- Authority
- JP
- Japan
- Prior art keywords
- disk body
- substrate
- recording medium
- guide groove
- medium layer
- 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
- 239000000758 substrate Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987152359U JPH0159919U (ar) | 1987-10-05 | 1987-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987152359U JPH0159919U (ar) | 1987-10-05 | 1987-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0159919U true JPH0159919U (ar) | 1989-04-14 |
Family
ID=31427214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987152359U Pending JPH0159919U (ar) | 1987-10-05 | 1987-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0159919U (ar) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56137555A (en) * | 1980-03-27 | 1981-10-27 | Sony Corp | Optical disc cassette and disc driving method |
| JPS6190342A (ja) * | 1984-10-08 | 1986-05-08 | Ricoh Co Ltd | 光学的情報記憶媒体 |
-
1987
- 1987-10-05 JP JP1987152359U patent/JPH0159919U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56137555A (en) * | 1980-03-27 | 1981-10-27 | Sony Corp | Optical disc cassette and disc driving method |
| JPS6190342A (ja) * | 1984-10-08 | 1986-05-08 | Ricoh Co Ltd | 光学的情報記憶媒体 |