JPS58196636A - 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
JPS58196636A
JPS58196636A JP57078303A JP7830382A JPS58196636A JP S58196636 A JPS58196636 A JP S58196636A JP 57078303 A JP57078303 A JP 57078303A JP 7830382 A JP7830382 A JP 7830382A JP S58196636 A JPS58196636 A JP S58196636A
Authority
JP
Japan
Prior art keywords
digital signal
film
disk
substrate
transparent
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
JP57078303A
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 JP57078303A priority Critical patent/JPS58196636A/ja
Publication of JPS58196636A publication Critical patent/JPS58196636A/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
    • 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
    • G11B7/254—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 protective topcoat layers
    • G11B7/2548—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 protective topcoat 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
    • G11B7/254—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 protective topcoat layers
    • G11B2007/25408—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 protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25411—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 protective topcoat layers consisting essentially of inorganic materials containing transition metal elements (Zn, Fe, Co, Ni, Pt)
    • 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
    • G11B7/254—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 protective topcoat layers
    • G11B2007/25408—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 protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25414—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 protective topcoat 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
    • G11B7/254—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 protective topcoat layers
    • G11B2007/25408—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 protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25417—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 protective topcoat layers consisting essentially of inorganic materials containing Group 14 elements (C, Si, Ge, Sn)
    • 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
    • G11B7/253—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 substrates
    • G11B7/2533—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 substrates comprising resins

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、ディスク表
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
学式方法や静電容量の溝付きおよび溝なし方式などがあ
り、光学式の■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、３はディスクの
裏面にある光学式のビックアラ！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はレーデ光、９は表面
部（レーザ入射面）である。
レーデ光より照射された光は、ディジタル化された信号
のビット６より再生され、Ｄ−Ａ変換され音として再生
される。
ディスク基盤はアクリル（ＰＭＭＡ　）やポリカー？ネ
ート（ＰＣ）などの樹脂で、インジェクション方式やホ
トポリマー法などで作られるため、樹脂製裏面保護膜７
や表面部９は樹脂の生地のままであるため軟らかく、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、ディノタル信
号金属反射膜面やディスク表面を硬化し、表面にキズが
付きにくく又、誤再生を防止するものである。図を用い
て説明する。
第３図は本発明のディスクを示す。
１０は無機質による酸化物の金属反射面の保護膜、１１
は同材質よりなるディスク表面（レーザ光入射面）の保
護膜を示す。材質としては、セレン（Ｃｅ　）　、シリ
コン（Ｓｔ　）　、チタｙ　（Ｔｌ）　＋アルミニウム
（Ａｔ　）などの無機質の酸化物である酸化セレン（ｃ
ｅｏ２）　＋酸化シリコン（Ｓ＋０２）　、酸化チタン
（Ｔ＋０２）　、酸化アルミニウム（Ａｔ２０３）が適
し、これらは高硬度の透明である。また、厚さは数１０
０Ｘ〜数μｍが適し、その付着方法としては、ス／４’
ツタリングや電子ビーム蒸着法などの物理蒸着法（Ｐｈ
−ｙｓｉｃａｌ　Ｖａｐｏｒ　Ｄｅｐｏｓｉｔｉｏｎ　
）や化学蒸着法（Ｃｈｅｍｉｃａｌ　Ｖａｐｏｒ　Ｄｅ
ｐｏｓｉｔｉｏｎ　）がある０このようにして得られた
無機質の酸化物は、数μｍ以下の薄膜であっても、表面
硬度が高く（ビッカース硬度：数百ｋｇ／■２）樹脂の
数を倍である。
従って、ディスク表面にキズが付きにくいため、誤再生
などの問題が生じないという効果がある。
また、ディノタル信号面とその反対側のレーザ光入射面
である表面とを同じ材質の無機質の酸化物を使用するこ
とにより、同時に酸化膜の形成ができるという特徴があ
り、しかもこれらの酸化物は透明であるという特徴があ
るためディスク表面には最適であるなど、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図は従来のディスクの
構造を示す図、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
学式ビックアップ装置、４・・・透明ディスク基盤、５
・・・金属反射膜、６・・・信号のビット、７・・・樹
脂製裏面保護膜、８・・・レーザ光、９・・・表面部、
１０　、１１・・・保護膜。 ！ 第１図 第３図 ０ １１　　　　４　　　　　　　！ｊ 第２図

Claims (2)

    【特許請求の範囲】
  1. （１）　　ディスクのディジタル信号面とその反対の光
    入射面との両方の表面に、同じ材質である無機物質の酸
    化物を保護膜として設けることを特徴とするディジタル
    信号記録、再生ディスク。
  2. （２）　　該酸化物は、ＣｅＯ２，５ｉｎ２．　ＴｉＯ
    ２，Ａｔ２０３などの透明で高硬度の薄膜であることを
    特徴とする特許請求の範囲第（１）項記載のディジタル
    信号記録、再生ディスク。
JP57078303A 1982-05-12 1982-05-12 デイジタル信号記録、再生デイスク Pending JPS58196636A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57078303A JPS58196636A (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
JP57078303A JPS58196636A (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
JPS58196636A true JPS58196636A (ja) 1983-11-16

Family

ID=13658153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57078303A Pending JPS58196636A (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) JPS58196636A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63239633A (ja) * 1986-11-20 1988-10-05 Canon Inc カード状光記録媒体
JPH0410245A (ja) * 1990-04-26 1992-01-14 Nec Home Electron Ltd 光ディスクおよびその製造方法
EP0729141A3 (en) * 1995-02-24 1996-11-27 Sony Corp Optical recording medium and method for its production
US7300742B2 (en) * 2002-08-23 2007-11-27 General Electric Company Data storage medium and method for the preparation thereof
JP2008152839A (ja) * 2006-12-15 2008-07-03 Toshiba Corp 光記録媒体、及び光記録媒体の製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690438A (en) * 1979-12-19 1981-07-22 Fujitsu Ltd Optical recording medium
JPS5755545A (en) * 1980-09-22 1982-04-02 Toshiba Corp Optical recording member

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690438A (en) * 1979-12-19 1981-07-22 Fujitsu Ltd Optical recording medium
JPS5755545A (en) * 1980-09-22 1982-04-02 Toshiba Corp Optical recording member

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63239633A (ja) * 1986-11-20 1988-10-05 Canon Inc カード状光記録媒体
JPH0410245A (ja) * 1990-04-26 1992-01-14 Nec Home Electron Ltd 光ディスクおよびその製造方法
EP0729141A3 (en) * 1995-02-24 1996-11-27 Sony Corp Optical recording medium and method for its production
US5846626A (en) * 1995-02-24 1998-12-08 Sony Corporation And Sony Disc Technology Inc. Optical recording medium and method of producing same
EP0992989A1 (en) * 1995-02-24 2000-04-12 Sony Corporation Method for producing an optical recording medium
US7300742B2 (en) * 2002-08-23 2007-11-27 General Electric Company Data storage medium and method for the preparation thereof
JP2008152839A (ja) * 2006-12-15 2008-07-03 Toshiba Corp 光記録媒体、及び光記録媒体の製造方法

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