JPH01103022U - - Google Patents
Info
- Publication number
- JPH01103022U JPH01103022U JP1987195789U JP19578987U JPH01103022U JP H01103022 U JPH01103022 U JP H01103022U JP 1987195789 U JP1987195789 U JP 1987195789U JP 19578987 U JP19578987 U JP 19578987U JP H01103022 U JPH01103022 U JP H01103022U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- diameter
- slope
- front surface
- utility
- 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 2
- 230000007423 decrease Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195789U JPH01103022U (US08063081-20111122-C00044.png) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987195789U JPH01103022U (US08063081-20111122-C00044.png) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103022U true JPH01103022U (US08063081-20111122-C00044.png) | 1989-07-12 |
Family
ID=31486446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987195789U Pending JPH01103022U (US08063081-20111122-C00044.png) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103022U (US08063081-20111122-C00044.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8930974B2 (en) | 2012-08-09 | 2015-01-06 | Panasonic Corporation | Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus |
| US9099105B1 (en) | 2014-01-24 | 2015-08-04 | Panasonic Intellectual Property Management Co., Ltd. | Disk-shaped information recording medium, disk cartridge and information recording and reproducing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137146A (ja) * | 1982-02-05 | 1983-08-15 | Matsushita Electric Ind Co Ltd | 光学式記録再生円盤 |
| JPS6079540A (ja) * | 1983-10-06 | 1985-05-07 | C B S Sony Rekoode Kk | 光学式記録媒体 |
| JPS60246039A (ja) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | 光学式情報担体円盤 |
-
1987
- 1987-12-25 JP JP1987195789U patent/JPH01103022U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137146A (ja) * | 1982-02-05 | 1983-08-15 | Matsushita Electric Ind Co Ltd | 光学式記録再生円盤 |
| JPS6079540A (ja) * | 1983-10-06 | 1985-05-07 | C B S Sony Rekoode Kk | 光学式記録媒体 |
| JPS60246039A (ja) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | 光学式情報担体円盤 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8930974B2 (en) | 2012-08-09 | 2015-01-06 | Panasonic Corporation | Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus |
| US9015735B2 (en) | 2012-08-09 | 2015-04-21 | Panasonic Intellectual Property Management Co., Ltd. | Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus |
| US9099105B1 (en) | 2014-01-24 | 2015-08-04 | Panasonic Intellectual Property Management Co., Ltd. | Disk-shaped information recording medium, disk cartridge and information recording and reproducing apparatus |
