JPS61193526U - - Google Patents

Info

Publication number
JPS61193526U
JPS61193526U JP1985077425U JP7742585U JPS61193526U JP S61193526 U JPS61193526 U JP S61193526U JP 1985077425 U JP1985077425 U JP 1985077425U JP 7742585 U JP7742585 U JP 7742585U JP S61193526 U JPS61193526 U JP S61193526U
Authority
JP
Japan
Prior art keywords
read
area
recording medium
medium layer
pits
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
JP1985077425U
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 JP1985077425U priority Critical patent/JPS61193526U/ja
Publication of JPS61193526U publication Critical patent/JPS61193526U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】
第1図及び第2図は本考案の一実施例の平面図
及び部分断面図、第3図は本考案の他の実施例の
平面図、第4図は本考案のさらに他の実施例の平
面図である。 10……光デイスク、12,12a〜12d…
…再生専用領域、13,13a〜13b……追加
書込み領域、14……透明円板、15……光記録
媒体層。

Claims (1)

  1. 【実用新案登録請求の範囲】 再生専用ピツトが形成された再生専用領域と、 トラツキング用溝及び光記録媒体層が形成され
    た追加書込み領域とを備えたことを特徴とする光
    デイスク。
JP1985077425U 1985-05-24 1985-05-24 Pending JPS61193526U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985077425U JPS61193526U (ja) 1985-05-24 1985-05-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985077425U JPS61193526U (ja) 1985-05-24 1985-05-24

Publications (1)

Publication Number Publication Date
JPS61193526U true JPS61193526U (ja) 1986-12-02

Family

ID=30620479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985077425U Pending JPS61193526U (ja) 1985-05-24 1985-05-24

Country Status (1)

Country Link
JP (1) JPS61193526U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971144A (ja) * 1982-10-15 1984-04-21 Canon Inc 光学的情報記録媒体
JPS60261041A (ja) * 1984-06-06 1985-12-24 Matsushita Electric Ind Co Ltd 光学デイスク

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971144A (ja) * 1982-10-15 1984-04-21 Canon Inc 光学的情報記録媒体
JPS60261041A (ja) * 1984-06-06 1985-12-24 Matsushita Electric Ind Co Ltd 光学デイスク

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