JPH01151424U - - Google Patents
Info
- Publication number
- JPH01151424U JPH01151424U JP1987195790U JP19579087U JPH01151424U JP H01151424 U JPH01151424 U JP H01151424U JP 1987195790 U JP1987195790 U JP 1987195790U JP 19579087 U JP19579087 U JP 19579087U JP H01151424 U JPH01151424 U JP H01151424U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- disk substrate
- center
- information
- discontinuously
- 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 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195790U JPH01151424U (un) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195790U JPH01151424U (un) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151424U true JPH01151424U (un) | 1989-10-19 |
Family
ID=31486447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987195790U Pending JPH01151424U (un) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151424U (un) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414648A (ja) * | 1990-05-08 | 1992-01-20 | Sharp Corp | 光磁気ディスク及びその製造方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079540A (ja) * | 1983-10-06 | 1985-05-07 | C B S Sony Rekoode Kk | 光学式記録媒体 |
-
1987
- 1987-12-25 JP JP1987195790U patent/JPH01151424U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6079540A (ja) * | 1983-10-06 | 1985-05-07 | C B S Sony Rekoode Kk | 光学式記録媒体 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414648A (ja) * | 1990-05-08 | 1992-01-20 | Sharp Corp | 光磁気ディスク及びその製造方法 |