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
Description
第１図イ，ロ，ハは本考案の片面デイスクの一
実施例、第２図は本考案の片面デイスクの別の実
施例、第３図イ，ロは従来例の両面および片面デ
イスクである。
１……デイスク本体、２……樹脂、３……反射
膜、４……保護膜、５…チヤツキング部、６……
貫通穴、７……肉厚調整部。
Fig. 1 A, B, and C show one embodiment of the single-sided disk of the present invention, Fig. 2 shows another embodiment of the single-sided disk of the present invention, and Fig. 3 A and B show conventional double-sided and single-sided disks. . DESCRIPTION OF SYMBOLS 1... Disc body, 2... Resin, 3... Reflective film, 4... Protective film, 5... Chatting part, 6...
Through hole, 7...Thickness adjustment part.
Claims (1)
る貫通穴が設けられ、該デイスクの内周から外周
にわたつて信号が記録されたデイスクにおいて、
前記貫通穴周辺でかつ無信号部分のみを厚くした
ことを特徴とするデイスク。 A disk in which a through hole into which a tracking member is inserted is provided in the center of the disk, and a signal is recorded from the inner circumference to the outer circumference of the disk,
A disk characterized in that only the non-signal portion around the through hole is thickened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987113348U JPS6423720U (en) | 1987-07-25 | 1987-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987113348U JPS6423720U (en) | 1987-07-25 | 1987-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6423720U true JPS6423720U (en) | 1989-02-08 |
Family
ID=31353103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987113348U Pending JPS6423720U (en) | 1987-07-25 | 1987-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6423720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028545A1 (en) * | 1993-05-31 | 1994-12-08 | Sony Corporation | Substrate for optical disc and optical disc which uses the substrate |
-
1987
- 1987-07-25 JP JP1987113348U patent/JPS6423720U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028545A1 (en) * | 1993-05-31 | 1994-12-08 | Sony Corporation | Substrate for optical disc and optical disc which uses the substrate |
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