JPS6368129U - - Google Patents

Info

Publication number
JPS6368129U
JPS6368129U JP16216786U JP16216786U JPS6368129U JP S6368129 U JPS6368129 U JP S6368129U JP 16216786 U JP16216786 U JP 16216786U JP 16216786 U JP16216786 U JP 16216786U JP S6368129 U JPS6368129 U JP S6368129U
Authority
JP
Japan
Prior art keywords
magneto
optical disk
plastic substrate
film forming
pregroove
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
JP16216786U
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 JP16216786U priority Critical patent/JPS6368129U/ja
Publication of JPS6368129U publication Critical patent/JPS6368129U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は、本考案の光磁気デイスクに使用され
るプラスチツク基板の実施例の構造を示す模式的
な平面図、第2図は従来の構造を示す第1図と同
様の図、第3図は製作した光磁気デイスクの耐久
性を試験するためのヒートサイクルのパターンで
ある。 1…基板の外形、1′…基板中心部の孔の外形
、2…プリグルーブ部の外形、2′…プリグルー
ブ部の内形、3…製膜部の外形、3′…製膜部の
内形。

Claims (1)

    【実用新案登録請求の範囲】
  1. プラスチツク基板上に形成された光磁気記録媒
    体層に光ビームを照射して情報の書き込みおよび
    読み出しを行なう光磁気デイスクにおいて、前記
    プラスチツク基板の製膜部分が、信号記録部分で
    あるプリグルーブ部のみからなる光磁気デイスク
JP16216786U 1986-10-24 1986-10-24 Pending JPS6368129U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16216786U JPS6368129U (ja) 1986-10-24 1986-10-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16216786U JPS6368129U (ja) 1986-10-24 1986-10-24

Publications (1)

Publication Number Publication Date
JPS6368129U true JPS6368129U (ja) 1988-05-09

Family

ID=31089173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16216786U Pending JPS6368129U (ja) 1986-10-24 1986-10-24

Country Status (1)

Country Link
JP (1) JPS6368129U (ja)

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