JPS58196635A - デイジタル信号記録、再生デイスク - Google Patents

デイジタル信号記録、再生デイスク

Info

Publication number
JPS58196635A
JPS58196635A JP57078302A JP7830282A JPS58196635A JP S58196635 A JPS58196635 A JP S58196635A JP 57078302 A JP57078302 A JP 57078302A JP 7830282 A JP7830282 A JP 7830282A JP S58196635 A JPS58196635 A JP S58196635A
Authority
JP
Japan
Prior art keywords
film
disk
digital signal
recording
reproducing 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
JP57078302A
Other languages
English (en)
Inventor
Koichi Azuma
孝一 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP57078302A priority Critical patent/JPS58196635A/ja
Publication of JPS58196635A publication Critical patent/JPS58196635A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B7/2578—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25708—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 13 elements (B, Al, Ga)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25713—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing nitrogen
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/2585—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on aluminium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

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。

Description

【発明の詳細な説明】 本発明は記録再生円盤に関し、その目的は、ディスク信
号面に硬化膜を設は表面を保護し、誤再生を防止するこ
とにある。
一般にビデオディスク（ＶＤ）やコンパクトディスク（
ＣＤ　）などのディジタル記録再生装置においては、光
学１式方法や静電容量の溝付きおよび溝なし方式などか
あ−リ、光学式のＶＤやＣＤなどの記録再生円盤（ディ
スク）の条件としては、機械的な強度が大きく、耐熱性
や耐湿性などの経時変化が少なく優れていることの他に
、ディスク表面がキズ付きにくいなどが必要である。
光学式記録再生装置であるＣＤの概略図を第１図に示す
。１はプレーヤ本体で、２はディスク１３はディスクの
裏面にある光学式のピックアップ装置を示す。
第２図に従来のディスクの構造図を示す。
４は透明ディスク基盤、５は金属反射膜、６は信号のピ
ット、７は樹脂製裏面保護膜、８はレーザ光、９は表面
部である。
レーデ光よシ照射された光は、ディジタル化された信号
のピット６よシ再生され、Ｄ−Ａ変換され音として再生
される。
ディスク基盤４はアクリル（ＰＭＭＡ　）やポリカーブ
ネート（ｐｃ　）などの樹脂で、インジェクション方式
で作られ金属反射膜５上には樹脂の保護膜が設けられる
ため軟らかく、キズ付き易いという欠点がある。
本発明はこれらの欠点を補うものであり、ディスク信号
面を硬化し、キズが付きにくく又、誤再生を防止するも
のである。以下に図を用いて説明する。
第３図は本発明のディスクを示す。
５はディジタル信号面の金属反射膜で、１０はその金属
の酸化物または窒化物よシなる保護膜を示すＯ 次に実施例を示す。
金属反射膜５にＡｔを使用すれば、保護膜１０は酸化ア
ルミニウム（Ａｔ２０３）であり、連続的な膜の生成が
可能である。例えば、Ａｔをスパッタリングにて形成す
る。その後、酸素（０２）ガスを導入すれば酸化アルミ
ニウム（Ａｔ２０３）が形成され、連続的にスパッタリ
ングが可能である。また、酸素０２の代シに窒素（Ｎ２
）ガスを導入すれば窒化アルミニウム（ＡｔＮ　）が連
続的に形成される。
これらＡｔ２０３やＡｔＮは高硬度の材質であるため、
Ａｔ反射膜の保護膜として適している。
スパッタリングを例に示したが、真空蒸着やイオンシレ
ーティングや電子ビーム蒸着法などの物理蒸着法や化学
蒸着法ならば可能である。
このように、ディジタル信号のディスク表面に金属反射
膜を設け、その表面に同じ金属の酸化物や窒化物などの
化合物層を設は保護膜とすれば、連続形成が可能なため
設備的に簡単なため安価で、しかも高硬度保護膜が容易
に形成され、信頼性、再現性の優れた安定した保護膜を
得ることができるため、工業上有益である。
【図面の簡単な説明】
第１図はＣＤ装置の概略図、第２図は従来のＣＤディス
クの構造図、第３図は本発明によるディスクの構造を示
す図である。 ｌ・・・プレーヤ本体、２・・・ディスク、３・・・光
学式ピックアップ装置、４・・・透明ディスク基盤、５
・・・金属反射膜、６・・・信号のピット、７・・・裏
面保護膜、８・・・レーザ光、９・・・表面部、１０・
・・保護膜。 第１図 第２図

Claims (1)

    【特許請求の範囲】
  1. ディジタル信号の表面に金属反射膜を設け、その表面に
    該金属の酸化物案窒化物などの化合物層を設けることに
    より、金属反射膜を保護することを特徴とするディジタ
    ル信号記録、再生ディスク。
JP57078302A 1982-05-12 1982-05-12 デイジタル信号記録、再生デイスク Pending JPS58196635A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57078302A JPS58196635A (ja) 1982-05-12 1982-05-12 デイジタル信号記録、再生デイスク

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57078302A JPS58196635A (ja) 1982-05-12 1982-05-12 デイジタル信号記録、再生デイスク

Publications (1)

Publication Number Publication Date
JPS58196635A true JPS58196635A (ja) 1983-11-16

Family

ID=13658123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57078302A Pending JPS58196635A (ja) 1982-05-12 1982-05-12 デイジタル信号記録、再生デイスク

Country Status (1)

Country Link
JP (1) JPS58196635A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658388A (en) * 1984-09-28 1987-04-14 Canon Kabushiki Kaisha Optical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658388A (en) * 1984-09-28 1987-04-14 Canon Kabushiki Kaisha Optical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride

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