JPH035225U - - Google Patents
Info
- Publication number
- JPH035225U JPH035225U JP1989067051U JP6705189U JPH035225U JP H035225 U JPH035225 U JP H035225U JP 1989067051 U JP1989067051 U JP 1989067051U JP 6705189 U JP6705189 U JP 6705189U JP H035225 U JPH035225 U JP H035225U
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- ring groove
- information recording
- injection molded
- molded plastic
- 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
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000002991 molded plastic Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 4
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図は本考案による光デイスクの一構造例の
中心部の拡大断面図、第２図は射出成形プラステ
イツク基板を示す斜視断面図、第３図は従来の単
板型光デイスクの中心部の拡大断面図、第４図は
従来の光デイスクの面振れの様子を示す断面図、
第５図は本考案の実施例１による光デイスクの面
振れ特性の経時変化を従来例と比較して示すグラ
フである。
１１…射出成形プラステイツク基板、１２…リ
ング溝、１３…記録層、１４…樹脂。
FIG. 1 is an enlarged sectional view of the center of an example of the structure of an optical disk according to the present invention, FIG. 2 is a perspective sectional view showing an injection molded plastic substrate, and FIG. 3 is a view of the center of a conventional single-plate optical disk. An enlarged cross-sectional view, FIG. 4 is a cross-sectional view showing the surface runout of a conventional optical disk,
FIG. 5 is a graph showing changes over time in the surface runout characteristics of the optical disk according to Example 1 of the present invention in comparison with a conventional example. DESCRIPTION OF SYMBOLS 11... Injection molded plastic board, 12... Ring groove, 13... Recording layer, 14... Resin.
Claims (1)
有しかつトラツキング用グルーブが形成された射
出成形プラステイツク基板上に記録層を設けてな
る単板構成の情報記録媒体において、前記リング
溝が樹脂により塞がれていることを特徴とする情
報記録媒体。 In an information recording medium having a single-plate structure in which a recording layer is provided on an injection molded plastic substrate on which a tracking groove is formed and which has a ring groove as a stamper fixing jig mark on the inner periphery, the ring groove is made of resin. An information recording medium characterized by being blocked by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989067051U JPH035225U (en) | 1989-06-08 | 1989-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989067051U JPH035225U (en) | 1989-06-08 | 1989-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH035225U true JPH035225U (en) | 1991-01-18 |
Family
ID=31600287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989067051U Pending JPH035225U (en) | 1989-06-08 | 1989-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH035225U (en) |
-
1989
- 1989-06-08 JP JP1989067051U patent/JPH035225U/ja active Pending
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