JPS6431512U - - Google Patents

Info

Publication number
JPS6431512U
JPS6431512U JP12706787U JP12706787U JPS6431512U JP S6431512 U JPS6431512 U JP S6431512U JP 12706787 U JP12706787 U JP 12706787U JP 12706787 U JP12706787 U JP 12706787U JP S6431512 U JPS6431512 U JP S6431512U
Authority
JP
Japan
Prior art keywords
optical disks
stamper
glass master
scale
master disk
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
JP12706787U
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 JP12706787U priority Critical patent/JPS6431512U/ja
Publication of JPS6431512U publication Critical patent/JPS6431512U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Optical Record Carriers (AREA)

Description

【図面の簡単な説明】
第1図は本考案の光デイスク用ガラス原盤の構
造の概略を示す断面図。 11…ガラス原盤、12…目盛り。 第2図は従来の光デイスク用ガラス原盤を示す
断面図。第3図は実施例1における構造断面図。 31…ガラス原盤、32…目盛り、33…保護
シート。 第4図は実施例2における構造断面図。 41…ガラス原盤、42…目盛り、43…保護
シート。 第5図は実施例3における構造断面図。 51…ガラス原盤、52…目盛り。

Claims (1)

    【実用新案登録請求の範囲】
  1. 光デイスク用スタンパの製造に用いられるガラ
    ス原盤において、スタンパを形成する面とは逆側
    の表面上もしくは表面付近に目盛りを有すること
    を特徴とする光デイスク用ガラス原盤。
JP12706787U 1987-08-21 1987-08-21 Pending JPS6431512U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12706787U JPS6431512U (ja) 1987-08-21 1987-08-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12706787U JPS6431512U (ja) 1987-08-21 1987-08-21

Publications (1)

Publication Number Publication Date
JPS6431512U true JPS6431512U (ja) 1989-02-27

Family

ID=31379155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12706787U Pending JPS6431512U (ja) 1987-08-21 1987-08-21

Country Status (1)

Country Link
JP (1) JPS6431512U (ja)

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