JPH0250826U - - Google Patents
Info
- Publication number
- JPH0250826U JPH0250826U JP1988127285U JP12728588U JPH0250826U JP H0250826 U JPH0250826 U JP H0250826U JP 1988127285 U JP1988127285 U JP 1988127285U JP 12728588 U JP12728588 U JP 12728588U JP H0250826 U JPH0250826 U JP H0250826U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- protrusion
- substrate
- disk according
- laser beam
- 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
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図および第２図はこの考案の第１の実施例
を示すもので、第１図は斜視図、第２図は拡大断
面図、第３図および第４図はこの考案の第２の実
施例を示すもので、第３図は斜視図、第４図は断
面図、第５図および第６図はこの考案の第３の実
施例を示すもので、第５図は斜視図、第６図は断
面図である。
１……基板、１ａ……レーザ光入射面、４……
環状突部、６……突起。
Figures 1 and 2 show the first embodiment of this invention; Figure 1 is a perspective view, Figure 2 is an enlarged sectional view, and Figures 3 and 4 are the second embodiment of this invention. FIG. 3 is a perspective view, FIG. 4 is a cross-sectional view, and FIGS. 5 and 6 show a third embodiment of this invention. Figure 6 is a sectional view. 1...Substrate, 1a...Laser beam incidence surface, 4...
Annular protrusion, 6...protrusion.
Claims (1)
箇所に突部を設けたことを特徴とする光デイスク
。 (2) 光デイスクのレーザ光入射側の面に上記突
部を設けたことを特徴とする請求項(1)に記載の
光デイスク。 (3) 光デイスクの基板形成時に上記突部を基板
と一体成形することにより設けたことを特徴とす
る請求項(1)または(2)に記載の光デイスク。 (4) 上記突部を光デイスクの基板に貼付するこ
とにより設けたことを特徴とする請求項(1)また
は(2)に記載の光デイスク。[Claims for Utility Model Registration] (1) An optical disk characterized in that a protrusion is provided at a location other than the information recording area on the outer periphery of the optical disk. (2) The optical disk according to claim 1, wherein the protrusion is provided on the surface of the optical disk on the laser beam incident side. (3) The optical disk according to claim 1 or 2, wherein the protrusion is provided by integrally molding the protrusion with the substrate when forming the substrate of the optical disk. (4) The optical disk according to claim (1) or (2), wherein the protrusion is provided by pasting it on a substrate of the optical disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988127285U JPH0250826U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988127285U JPH0250826U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0250826U true JPH0250826U (en) | 1990-04-10 |
Family
ID=31379579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988127285U Pending JPH0250826U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0250826U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02243317A (en) * | 1989-03-17 | 1990-09-27 | Hitachi Ltd | Optical disk substrate and its manufacturing method |
| JPH0536664U (en) * | 1991-10-22 | 1993-05-18 | 長野日本電産株式会社 | Dummy disk |
| JPH06223407A (en) * | 1993-01-22 | 1994-08-12 | Sharp Corp | Flexible disk |
| WO2003069610A1 (en) * | 2002-02-13 | 2003-08-21 | Sony Corporation | Disklike optical recording medium |
| KR100595159B1 (en) * | 1999-01-28 | 2006-07-03 | 엘지전자 주식회사 | optical disc |
-
1988
- 1988-09-30 JP JP1988127285U patent/JPH0250826U/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02243317A (en) * | 1989-03-17 | 1990-09-27 | Hitachi Ltd | Optical disk substrate and its manufacturing method |
| JPH0536664U (en) * | 1991-10-22 | 1993-05-18 | 長野日本電産株式会社 | Dummy disk |
| JPH06223407A (en) * | 1993-01-22 | 1994-08-12 | Sharp Corp | Flexible disk |
| KR100595159B1 (en) * | 1999-01-28 | 2006-07-03 | 엘지전자 주식회사 | optical disc |
| WO2003069610A1 (en) * | 2002-02-13 | 2003-08-21 | Sony Corporation | Disklike optical recording medium |