JPS59125791U

JPS59125791U - compact disk

Info

Publication number: JPS59125791U
Application number: JP1871483U
Authority: JP
Inventors: 中道　昭
Original assignee: オリンパス光学工業株式会社
Priority date: 1983-02-10
Filing date: 1983-02-10
Publication date: 1984-08-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ａは既知のコンパクトディスクの斜視図、第１図
すは同部分断面図、第２図ａ、　　ｂ、第３図ａ、　ｂ
および第４図ａ、　ｂは本考案に係る第１〜第３実施例
を示すコンパクトディスクの各斜視図とそれぞれの部分
断面図、第５図ａ、　　ｂ、　　ｃは本考案の第４〜第
６実施例を示す部分断面図である。１．１０・・・コンパクトディスク、２．１１・・・記
録面、３．１２・・・裏面、１３・・・外縁部、１５゜
１９．２１・・・面取部、１６・・・条溝、１７・・・
凸部、１８．２０・・・環状溝、２２・・・凹凸部。７−−−−−−−−−−〜、ノ圀■勿曽補正　昭５８．　８．２２実用新案登録請求の範囲を次のように補正する。Ｏ実用新案登録請求の範囲（１）　　コンパクトディスクの記録面側、または記録
面とは反対面側の外縁部に識別部を設けることにより構
成したことを特徴とするコンパクトディスク。（２）前記識別部は、前記記録面側または記録面とは反
対面側の外縁部の全周または部分的に設けて成る実用新
案登録請求の範囲第１項記戦のコンパクトディスク。（３）前記識別部は、前記記録面側または記録面とは反
対面側の外縁部に沿って設けた面取部から成る実用新案
登録請求の範囲第１項記載のコンパクトディスク。（４）　　前記識別部は、前記記録面側または記録面と
は反対面側の外縁部に沿って設けた凸部から成る実用新
案登録請求の範囲第１項記載のコンパクトディスク。（５）前記識別部は、前記記録面側または記録面とは反
対面側の外縁部に沿って設けた条溝部から成る実用新案
登録請求の範囲第１項記載のコンパクトディスク。（６）　　前記識別部は、前記記録面側または記録面と
は反対面側の外縁部に沿って設けたテーパー面に条溝を
備える面取部からなる実用新案登録請求の範囲第１項記
載のコンパクトディスク。（７）前記識別部は、前記記録面側または記録面とは反
対面側の外縁部に沿って設けた面取部と条溝部の組み合
せから成る実用新案登録請求の範囲第１項記載のコンパ
クトディスク。Figure 1a is a perspective view of a known compact disc, Figure 1 is a partial sectional view of the same, Figure 2a, b, Figure 3a, b.
FIGS. 4a and 4b are perspective views and partial sectional views of compact discs showing the first to third embodiments of the present invention, and FIGS. 5a, b, and c are the fourth to third embodiments of the present invention. FIG. 6 is a partial cross-sectional view showing a sixth embodiment. 1.10...Compact disc, 2.11...Recording surface, 3.12...Back surface, 13...Outer edge, 15°19.21...Chamfer, 16...Stripes Groove, 17...
Convex portion, 18.20... Annular groove, 22... Uneven portion. 7---------, Nokuni ■ Mukuso correction 1977. 8.22 The scope of claims for utility model registration is amended as follows. O Utility Model Registration Claims (1) A compact disc characterized in that it is constructed by providing an identification portion on the recording surface side of the compact disc or on the outer edge of the opposite surface from the recording surface. (2) The compact disc according to claim 1, wherein the identification portion is provided entirely or partially on the outer edge of the recording surface side or the opposite surface from the recording surface. (3) The compact disc according to claim 1, wherein the identification portion comprises a chamfered portion provided along the outer edge of the recording surface or the opposite surface from the recording surface. (4) The compact disc according to claim 1, wherein the identification portion comprises a convex portion provided along the outer edge of the recording surface or the opposite surface from the recording surface. (5) The compact disc according to claim 1, wherein the identification portion comprises a groove portion provided along the outer edge of the recording surface or the opposite surface from the recording surface. (6) The identification portion comprises a chamfered portion having grooves on a tapered surface provided along the outer edge on the recording surface side or the side opposite to the recording surface. compact disc. (7) The compact according to claim 1, wherein the identification portion is a combination of a chamfer and a groove provided along the outer edge on the recording surface side or on the side opposite to the recording surface. disk.

Claims

[Scope of utility model registration request]

(1) A compact disc characterized in that an identification portion is provided on the recording surface side of the compact disc or on the outer edge of the opposite surface from the recording surface.

(2) The compact disc according to claim 1, wherein the identification portion is provided entirely or partially on the outer edge on the side of the recording surface or on the side opposite to the recording surface.

(3) The compact disc according to claim 1, wherein the identification portion comprises a chamfered portion provided along the outer edge of the recording surface or the opposite surface from the recording surface.

(4) The compact disc according to claim 1, wherein the identification portion comprises a convex portion provided along the outer edge of the recording surface or the opposite surface from the recording surface.

(5) The compact disc according to claim 1, wherein the identification portion comprises a groove portion provided along the outer edge of the recording surface or the opposite surface from the recording surface.

(6) The identification portion comprises a chamfered portion provided with grooves on a tapered surface provided along the outer edge on the recording surface side or on the side opposite to the recording surface, as set forth in claim 1 of the utility model registration claim. compact disc.

(7) The compact according to claim 1, wherein the identification portion is a combination of a groove and a chamfered portion provided along the outer edge of the recording surface side or the side opposite to the recording surface. disk.