JPH0181720U - - Google Patents

Info

Publication number
JPH0181720U
JPH0181720U JP1987176995U JP17699587U JPH0181720U JP H0181720 U JPH0181720 U JP H0181720U JP 1987176995 U JP1987176995 U JP 1987176995U JP 17699587 U JP17699587 U JP 17699587U JP H0181720 U JPH0181720 U JP H0181720U
Authority
JP
Japan
Prior art keywords
circumferential wall
laser beam
center hole
disposing
absorbs
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
Application number
JP1987176995U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987176995U priority Critical patent/JPH0181720U/ja
Publication of JPH0181720U publication Critical patent/JPH0181720U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例の構造を示す一部欠
切断面図、第2図A,Bは前記の実施例の中心部
の一部欠切断面図、第3図は前記の実施例の周辺
部の断面図、第4図は従来例の一部欠切断面図で
ある。 図中、1はコンパクトデイスク、2は中心穴、
6はレーザ光線、8は内周面、9は外周部、10
は外周壁、11は黒い色の材料を示す。

Claims (1)

    【実用新案登録請求の範囲】
  1. コンパクトデイスク1において、中心穴2の内
    周壁8及びまたは外縁9の外周壁10の内側に、
    レーザ光線6を吸収する材料11を配設して成る
    構造のコンパクトデイスク。
JP1987176995U 1987-11-19 1987-11-19 Pending JPH0181720U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987176995U JPH0181720U (ja) 1987-11-19 1987-11-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987176995U JPH0181720U (ja) 1987-11-19 1987-11-19

Publications (1)

Publication Number Publication Date
JPH0181720U true JPH0181720U (ja) 1989-05-31

Family

ID=31468684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987176995U Pending JPH0181720U (ja) 1987-11-19 1987-11-19

Country Status (1)

Country Link
JP (1) JPH0181720U (ja)

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