JP2001519581A - 光記憶媒体 - Google Patents

光記憶媒体

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Publication number
JP2001519581A
JP2001519581A JP2000515272A JP2000515272A JP2001519581A JP 2001519581 A JP2001519581 A JP 2001519581A JP 2000515272 A JP2000515272 A JP 2000515272A JP 2000515272 A JP2000515272 A JP 2000515272A JP 2001519581 A JP2001519581 A JP 2001519581A
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JP
Japan
Prior art keywords
storage medium
dye
optical storage
dyes
writable
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
JP2000515272A
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English (en)
Inventor
フエスパー，ライナー
レバー，ハルトムート
ツイマーマン，ライムント
ハエゼ，ビルフリート
Original Assignee
バイエル・アクチエンゲゼルシヤフト
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Application filed by バイエル・アクチエンゲゼルシヤフト filed Critical バイエル・アクチエンゲゼルシヤフト
Publication of JP2001519581A publication Critical patent/JP2001519581A/ja
Pending legal-status Critical Current

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    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G—PHYSICS
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    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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    • G11B7/2475—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes methine or polymethine dyes merocyanine
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    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

(57)【要約】 本発明は、保護層と１層以上の書き込み可能層と任意の反射層と少なくとも１層の支持層を含んで成る書き込み可能光記憶媒体に関する。上記支持層に、書き込みおよび／または読み取りで用いられる波長のレーザーの透過率が少なくとも７０％で上記レーザー光の波長よりも少なくとも１００ｎｍ短い他の全ての波長の可視光の吸光度が少なくとも７０％である少なくとも１種の着色剤を入れる。

Description

【発明の詳細な説明】
【０００１】 本発明は、書き込み可能光記憶媒体（ｗｒｉｔａｂｌｅ ｏｐｔｉｃａｌ ｓ
ｔｏｒａｇｅ ｍｅｄｉｕｍ）、特に単もしくは複書き込み可能コンパクトディ
スク［ｓｉｎｇｌｙ− ｏｒ ｍｕｌｔｉｐｌｙ−ｗｒｉｔａｂｌｅ ｃｏｍｐ
ａｃｔ ｄｉｓｃ（ＣＤ）］の形態の媒体に関し、これに特定の支持層を含める
。
【０００２】 レーザー光を用いてデータの記録および読み取りが行われる通常の光記憶媒体
、特にＣＤ−Ｒ類は、透明支持体、記録層（金属、例えばＴｅ、ＢｉまたはＭｎ
など、または染料、例えばシアニン染料、メロシアニン染料、フタロシアニン染
料またはアゾ染料などを含んで成る）、金属被覆（ｍｅｔａｌｌｉｃ）反射層お
よびまた任意の保護層で構成されている。データの記録は、レーザー光を上記透
明支持体に通して照射させることで行われる。この手順の過程中、その照射点の
記録層が変形を起こすか、昇華するか、蒸発するか、或は修飾を受ける［必要な
らば、結果としてピット（ｐｉｔｓ）が生じるようにする］。また、上記記録層
とそれに隣接する層の間に自由空間を形成させることもしばしば行われている。
通常は、Ａｕ、Ａｇ、ＡｌまたはＣｕを含有する反射金属層を上記書き込み可能
層の上に与え、そして次に、上記書き込み層の上に保護層を与える。読み取りは
、より低いエネルギーのレーザー光を同様に上記透明支持体に通して照射させる
ことを通して行われる。上記ピットが反射する光と記憶媒体の残りの部分が反射
する光の間のコントラストを電気シグナルとして読み取る。
【０００３】 書き込み可能でない通常のＣＤ（ＲＯＭ型：読み取りのみのメモリー）には上
述した書き込み可能層が含まれておらず、単に、再現させるべきデータに相当す
るピットを含んで成り、上記ピットを例えばプレス成形などで支持体上に既に生
じさせておく。それ以外、それらの構造は比較的類似している。
【０００４】 より詳細な説明に関してはA.B. Marchant, Optical Recording(1990)を参照の
こと。
【０００５】 公知ＣＤ−Ｒ類に関する１つの問題は記録層の感受性が比較的高い点にある。
このような記録層は熱の影響および放射線の影響を受ける結果として変化する可
能性があり、その結果として、ＣＤ−Ｒの書き込みができなくなりそして／また
は読み取りができなくなる。従って、ある製造業者（複数）はＣＤ−Ｒを太陽光
に直接さらさないことを推奨している。機器製造業者はＣＤ−ＲをＤＶＤプレー
ヤーで用いるべきでないことを推奨している、と言うのは、ＤＶＤプレーヤーで
用いられているレーザーの波長はより短いことからＣＤ−Ｒが損傷を受ける可能
性がある恐れがあるからである。その上、記憶された情報を読み取ることができ
るとしても誤作動を起こし易く、これは電子試験具を用いて測定可能であり、こ
れはとりわけブロックエラーレート（ｂｌｏｃｋ ｅｒｒｏｒ ｒａｔｅ）の表
現形態で呼ばれる。
【０００６】 ブロックエラーレートは、要約形態において、不完全な情報ブロック（ｄｅｆ
ｅｃｔｉｖｅ ｉｎｆｏｒｍａｔｉｏｎ ｂｌｏｃｋｓ）の全数を示すもので、
できるだけ低くすべきである。このブロックエラーレートが２２０の値を越える
と、そのようなデータ記憶媒体は仕様の範囲外である。このブロックエラーレー
トの測定をＣＤテストプレーヤーを用いて行う。より詳細な情報に関してはＦｕ
ｎｋｓｃｈａｕ ２３／１９８８のW. Schild “Fehler vom Player, Fehler vo
n der Platte"を参照のこと。また、ＣＤ−Ｒが読み取りも書き込みも全くでき ない度合にまで変化してしまうこともあり得る。
【０００７】 本発明の基礎となる目的は、向上した安定性を示す、従って向上した使用寿命
（ｓｅｒｖｉｃｅ ｌｉｆｅ）を示す書き込み可能光記憶媒体、特に書き込み可
能ＣＤを提供することにある。
【０００８】 この目的を、本発明に従い、保護層と１層以上の書き込み可能層と任意の光反
射層と少なくとも１層の支持層を含んで成る書き込み可能光記憶媒体を提供する
ことで達成し、ここでは、この書き込み可能光記憶媒体を、書き込みおよび／ま
たは読み取りで用いられる波長のレーザーを透過する透過率が少なくとも７０％
で上記レーザー光の波長よりも少なくとも１００ｎｍ短い他の全ての波長の可視
光を吸収する吸光度が少なくとも７０％である少なくとも１種の染料を上記支持
層に含有させることで特徴付ける。
【０００９】 好適には、所望の吸光特性を達成する目的で、上記支持層になくとも２種類の
染料、最も好適には３種類の染料を含有させる。
【００１０】 上記染料または染料類を好適にはアントラキノン染料およびピラゾロン染料を
含む群から選択する。特にＭａｋｒｏｌｅｘｇｅｌｂ ３Ｇ（商標）（ピラゾロ
ン染料、Ｃｏｌｏｕｒ Ｉｎｄｅｘ、Ｐａｒｔ １：Ｓｏｌｖｅｎｔ Ｙｅｌｌ
ｏｗ ９３）、Ｍａｋｒｏｌｅｘｒｏｔ ５Ｂ（商標）（アントラキノン染料、
Ｃｏｌｏｕｒ Ｉｎｄｅｘ、Ｐａｒｔ １：Ｓｏｌｖｅｎｔ Ｒｅｄ ５２、Ｐ
ａｒｔ ２ Ｎｏ．６８２１０）およびＨｙｔｈｅｒｍ Ｂｌｕｅ Ｅ（商標）
（アントラキノン染料、Ｃｏｌｏｕｒ Ｉｎｄｅｘ Ｐａｒｔ １ Ｓｏｌｖｅ
ｎｔ Ｂｌｕｅ １０１）が好適である。
【００１１】 上記支持層用の材料は決定的でなく、特に制限はない。この支持層は光記憶媒
体、特にＣＤ−Ｒで通常用いられる材料を含んで成り、特に書き込みおよび／ま
たは読み取りで用いるレーザー光を透過する重合体、例えばポリ（コ）カーボネ
ート類、ポリメタアクリル酸メチル、ポリ−４−メチルペンテン−１、非晶質環
状ポリオレフィン類、ポリエステル類、エポキシ樹脂またはポリアクリレート類
などを含んで成る。特にポリ（コ）カーボネートが用いられる。それにピットお
よび／またはコントロールシグナルおよび／またはガイドチャンネルの形態の情
報シグナルを含めることも可能である、即ちそれは場合により定様式であっても
よい情報シグナルを伴うか或は伴わない支持体であってもよい。それは場合によ
り通常様式で表面が処理されていてもよい。
【００１２】 上記染料または染料類を通常様式で支持体材料に添加し、例えば上記染料を支
持体材料の粒子と一緒にコンパウンドにするか或は上記染料を支持体材料の粒子
に付着させることなどで添加を行う。また、好適には、この染料をマスターバッ
チとして添加することも可能である。
【００１３】 この支持体材料に含める染料または染料類の濃度を好適には０．１から１．４
重量％、最も好適には０．３−０．８重量％にする。この支持体の成形を、その
染料を含有させた材料を通常様式、例えば射出成形または打ち抜きなどで加工す
ることで行う。
【００１４】 複数の支持層を与える場合には、これらの層に好適には同じ重合体材料を含め
る。この場合には、単一の支持層または複数の支持層に染料または染料類を添加
してもよい。
【００１５】 場合により与えてもよい書き込み可能層（類）は好適には通常の感受性染料層
（類）である（例えばヨーロッパ特許出願公開第３５３ ３９２号、４８８ ２
３１号および４１０ ８７９号を参照）。これらに１種以上の有機染料、例えば
フタロシアニン染料、メロシアニン染料、シアニン染料、インドジカルボシアニ
ン染料、アズレン染料およびアゾ染料などを含める。それらを通常様式、例えば
スピンコーティングなどで溶媒に入っている溶液として付着させる。溶媒として
例えばジアセトンアルコール、フッ素置換アルコール類、例えばテトラフルオロ
プロパノールなど、ブタノールまたはそれらの混合物を用いる。
【００１６】 この書き込み可能層（類）に含める染料は上記支持層に含める染料とは異なる
。特にシアニン染料が好適である。
【００１７】 場合により与えてもよい反射層に、好適には、用いる波長のレーザー光を８０
％を越える度合で反射する金属、例えばＡｕ、Ａｇ、Ａｌ、Ｃｕなどまたはそれ
らの合金を含める。この取り付けは、例えば気相を用いた蒸着方法、例えば真空
蒸着など、スパッタリング（ｓｐｕｔｔｅｒｉｎｇ）、イオンメッキまたは同様
な技術を用いて実施可能である。
【００１８】 上記保護層に、卓越した耐衝撃性を示す樹脂を含めるが、このような樹脂は通
常はエポキシ樹脂、ポリアクリレート樹脂または硬化シリコン樹脂である。この
保護層を、通常は、上記樹脂をスピンコーティングで付着させた後にそれをＵＶ
照射で硬化させることで生じさせる。しかしながら、これにまた軟質材料、例え
ばポリウレタン樹脂などを含めることも可能である。
【００１９】 個々の層の層厚を好適には０．５−１．２ｍｍ（支持層）、２００ｎｍ以下（
書き込み可能層）、２００ｎｍ以下（反射層）および５−２００ｎｍ（保護層）
にする。
【００２０】 書き込みおよび／または読み取りで用いられるレーザーの波長は、好適には７
６０−８００ｎｍ、最も好適には７７５−７８５ｎｍであるか、或は６２０−６
６０ｎｍ、最も好適には６３５−６５０ｎｍである。
【００２１】 以下に示す実施例で本発明のさらなる説明を行う。
【００２２】 ポリカーボネートが２５℃の塩化メチレンに０．５％入っている溶液を用いて
ポリカーボネートの相対粘度を測定した。
【００２３】
【実施例】
本発明に従う実施例 下記の混合物を支持体材料として調製した： ビスフェノールＡから作られていてｔ−ブチルフェノール末端基を含む粒状ポ
リカーボネート［バイエル社（Ｂａｙｅｒ ＡＧが供給していて１．２０の平均
溶液粘度（１００ｍｌの塩化メチレン中０．５ｇの濃度において、２５℃の塩化
メチレン中で測定）を示すＭａｋｒｏｌｏｎ ＣＤ ２００５］を９９．６２２
４重量％、 ピラゾロン染料であるＭａｋｒｏｌｅｘｇｅｌｂ ３Ｇ（Ｃｏｌｏｕｒ Ｉｎ
ｄｅｘ、Ｐａｒｔ １にＳｏｌｖｅｎｔ Ｙｅｌｌｏｗ ９３として記録）（バ
イエル社）を０．０６５１３重量％、 アントラキノン染料であるＭａｋｒｏｌｅｘｒｏｔ ５Ｂ（Ｃｏｌｏｕｒ Ｉ
ｎｄｅｘ、Ｐａｒｔ １にＳｏｌｖｅｎｔ Ｒｅｄ ５２として記録）（バイエ
ル社）を０．１９７４６重量％、 アントラキノン染料であるＨｙｔｈｅｒｍｂｌｕｅ Ｅ（Ｃｏｌｏｕｒ Ｉｎ
ｄｅｘにＳｏｌｖｅｎｔ Ｂｌｕｅ １０１として記録）を０．１１５０１重量
％。
【００２４】 上記染料を上記粒状材料と一緒に容器に入れて密封して強力に混合した後、こ
の混合物のコンパウンド化を、ツインウォーム（ｔｗｉｎ−ｗｏｒｍ）Ｗｅｒｎ
ｅｒ Ｐｆｌｅｉｄｅｒｅｒニーダー、Ｔｙｐｅ ＺＳＫ ５３を約２４０℃の
材料温度で用いて行った。
【００２５】 その後、ＣＤ射出成形機のＣＤ−Ｒ打ち抜き具を用いて厚みが１．２ｍｍで外
径が１２０ｍｍのＣＤ−Ｒ半加工品を製造した。ＣＤ−Ｒ製造を、サイクル時間
を１０秒にして３３０℃の材料温度および１００℃の鋳型温度で行った。上記Ｃ
Ｄ−Ｒ打ち抜き具に、平均幅が７５ｎｍで平均深さが１８０ｎｍでトラック間隔
が１．６μｍの螺旋形態の溝を前以て付けておいた。
【００２６】 このＣＤ−Ｒ半加工品の透過率を測定した。上記材料は７００ｎｍ未満の波長
を高い度合で吸収することが図１から分かる。 ［測定幾何学的配置（ｍｅａｓｕｒｅｍｅｎｔ ｇｅｏｍｅｔｒｙ）：０°／拡
散（ｄｉｆｆｕｓｅ）］。比較実施例 比較の目的で、Ｍａｋｒｏｌｏｎ ＣＤ ２００５基質材料に染料を全く添加
しない以外は同様にしてＣＤ−Ｒ半加工品を製造した。この材料は可視光領域全
体に渡って高い透過率を示すことが図２から分かる（測定幾何学的配置：０°／
拡散）。
【００２７】 その後、上記ＣＤ−Ｒ半加工品に染料層を付着させた。Ｆｕｊｉが供給してい
るシアニン染料であるＯＭ５７を日本化薬株式会社が供給しているＫａｙａｓｏ
ｒｂ ＩＲＧ−０２２クエンチャーと組み合わせて染料として用いた。この染料
とクエンチャーの比率を２０：１にした。染料／クエンチャーの付着をそれらが
ジアセトンアルコールに入っている溶液をスピンコーティングで付着させること
で行い、その条件を、生じる染料層の平均厚が１５０ｎｍになるように選択した
。
【００２８】 次に、この染料層に厚みが６０から８０ｎｍの金層を蒸着させた。次に、この
金層に厚みが約１０μｍの保護ラッカーを与えた。
【００２９】 次に、Ｙａｍａｈａ ＣＤ−Ｒ １００バーナーを４ｘの書き込み／読み取り
比率で用いて、本発明に従って得たＣＤ−Ｒおよび比較試験で得たＣＤ−Ｒの書
き込みを行った。次に、Ingenieurbueros fuer Umwelttechnologie und Messtec
hnik, Bielefeldが供給しているＩＳＥＤＤテストプレーヤーをＰｈｉｌｉｐｓ およびＳｏｎｙプレーヤーと一体式に用いて、上記ＣＤ−Ｒのブロックエラーレ
ート（ＢＬＥＲ）を測定した。
【００３０】 上記ＣＤ−Ｒの品質は以下の表１に示すように匹敵するレベルであった。表１ ＢＬＥＲ(Sony) ＢＬＥＲ(Philips) 本発明に従うＣＤ−Ｒ ６０ ５９ 基質材料に染料を入れなかった ＣＤ−Ｒ ６２ ６４ 次に、本発明に従うＣＤ−Ｒおよび比較ＣＤ−ＲにＩＳＯ ４８９２−２に従
う暴露試験を受けさせた。基質材料を通したＣＤ−Ｒ染料層への暴露を下記の試
験条件下で行った。 装置：Atlas Xenon−ＷＯＭ 光源：６.５ｋＷ ＸＥＮＯＮランプ(Atlas) 照射強度：３４０ｎｍで測定して０.３５Ｗ／（ｍ2＊ｎｍ） フィルター材料：パイレックス／パイレックス 黒色標準温度：６５℃ 試験室温度：４２℃ 相対大気湿度：６５％ 噴霧周期：１０２／１８分 その後、ＩＳＥＥＤテストプレーヤーを用いてブロックエラーレートを再び測
定した。
【００３１】 比較ＣＤ−Ｒは、約１０時間の暴露時間後でさえ有意なＢＬＥＲ上昇を示した
。このＢＬＥＲ値は、暴露時間が約２０時間になると約５００になった、即ち仕
様の範囲外であった。
【００３２】 本発明に従うＣＤ−Ｒは実際に５０時間の暴露時間に及んで全くＢＬＥＲ上昇
を示さなかった。
───────────────────────────────────────────────────── フロントページの続き (81)指定国 ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＣＹ， ＤＥ，ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，Ｉ Ｔ，ＬＵ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ ，ＣＦ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＧＷ，ＭＬ， ＭＲ，ＮＥ，ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＧＨ，ＧＭ，Ｋ Ｅ，ＬＳ，ＭＷ，ＳＤ，ＳＺ，ＵＧ，ＺＷ)，ＥＡ(ＡＭ ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ，ＲＵ，ＴＪ，ＴＭ) ，ＡＬ，ＡＭ，ＡＴ，ＡＵ，ＡＺ，ＢＡ，ＢＢ，ＢＧ， ＢＲ，ＢＹ，ＣＡ，ＣＨ，ＣＮ，ＣＵ，ＣＺ，ＤＥ，Ｄ Ｋ，ＥＥ，ＥＳ，ＦＩ，ＧＢ，ＧＤ，ＧＥ，ＧＨ，ＧＭ ，ＨＲ，ＨＵ，ＩＤ，ＩＬ，ＩＳ，ＪＰ，ＫＥ，ＫＧ， ＫＰ，ＫＲ，ＫＺ，ＬＣ，ＬＫ，ＬＲ，ＬＳ，ＬＴ，Ｌ Ｕ，ＬＶ，ＭＤ，ＭＧ，ＭＫ，ＭＮ，ＭＷ，ＭＸ，ＮＯ ，ＮＺ，ＰＬ，ＰＴ，ＲＯ，ＲＵ，ＳＤ，ＳＥ，ＳＧ， ＳＩ，ＳＫ，ＳＬ，ＴＪ，ＴＭ，ＴＲ，ＴＴ，ＵＡ，Ｕ Ｇ，ＵＳ，ＵＺ，ＶＮ，ＹＵ，ＺＷ (72)発明者 ツイマーマン，ライムント ドイツ連邦共和国デー−40764ランゲンフ エルト・アムオーレンブツシユ39アー (72)発明者 ハエゼ，ビルフリート ドイツ連邦共和国デー−51519オーデンタ ール・オゼナウアーシユトラーセ32 Ｆターム(参考） 5D029 KA17 KC03 KC04

Claims (10)

    【特許請求の範囲】
  1. 【請求項１】 保護層と１層以上の書き込み可能層と任意の光反射層と少な
    くとも１層の支持層を含んで成る書き込み可能光記憶媒体であって、該支持層が
    、書き込みおよび／または読み取りで用いられる波長のレーザーの透過率が少な
    くとも７０％で該レーザー光の波長よりも少なくとも１００ｎｍ短い他の全ての
    波長の可視光の吸光度が少なくとも７０％である少なくとも１種の染料を含有す
    る、ことを特徴とする光記憶媒体。
  2. 【請求項２】 該支持層が少なくとも２種類の染料を含有することを特徴と
    する請求項１記載の光記憶媒体。
  3. 【請求項３】 該透過率が少なくとも８０％、好適には８５％で該吸光度が
    少なくとも９０％、好適には９５％であることを特徴とする請求項１または２い
    ずれか１項記載の光記憶媒体。
  4. 【請求項４】 該書き込みおよび／または読み取り用のレーザー波長が７６
    ０−８００ｎｍ、好適には７７５−７８５ｎｍであることを特徴とする請求項１
    から３いずれか１項記載の光記憶媒体。
  5. 【請求項５】 該書き込みおよび／または読み取り用のレーザー波長が６２
    ０−６６０ｎｍ、好適には６３５−６５０ｎｍであることを特徴とする請求項１
    から３いずれか１項記載の光記憶媒体。
  6. 【請求項６】 該染料または染料類がアントラキノン染料またはピラゾロン
    染料を含む群から選択されることを特徴とする請求項１から５いずれか１項記載
    の光記憶媒体。
  7. 【請求項７】 該染料または染料類がMakrolexgelb 3G(商標), Makrolexrot
    5B(商標)またはHytherm Blue E(商標)から選択されることを特徴とする請求項 １から６いずれか１項記載の光記憶媒体。
  8. 【請求項８】 該支持層が染料を０．１−１重量％含有することを特徴とす
    る請求項１から７いずれか１項記載の光記憶媒体。
  9. 【請求項９】 単もしくは複書き込み可能コンパクトディスクの形態の請求
    項１から８いずれか１項記載の光記憶媒体。
  10. 【請求項１０】 該書き込み可能層が該染料または染料類とは異なる感光性
    染料を含有することを特徴とする請求項９記載の光記憶媒体。
JP2000515272A 1997-10-07 1998-09-24 光記憶媒体 Pending JP2001519581A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19744162A DE19744162A1 (de) 1997-10-07 1997-10-07 Optisches Speichermedium
DE19744162.9 1997-10-07
PCT/EP1998/006100 WO1999018571A1 (de) 1997-10-07 1998-09-24 Optisches speichermedium

Publications (1)

Publication Number Publication Date
JP2001519581A true JP2001519581A (ja) 2001-10-23

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JP (1) JP2001519581A (ja)
KR (1) KR20010024430A (ja)
CN (1) CN1273666A (ja)
AU (1) AU1026699A (ja)
BR (1) BR9812868A (ja)
CA (1) CA2305147A1 (ja)
DE (1) DE19744162A1 (ja)
IL (1) IL134872A0 (ja)
NO (1) NO20001746L (ja)
TW (1) TW464855B (ja)
WO (1) WO1999018571A1 (ja)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE343837T1 (de) * 1999-08-27 2006-11-15 Dow Global Technologies Inc Optsche mediaplatten mit hoher datendichte
US6944115B2 (en) 2000-09-29 2005-09-13 General Electric Company Colored data storage media
WO2002099470A2 (en) * 2001-06-05 2002-12-12 Flexplay Technologies, Inc. Limited play optical devices with interstitial reactive layer and methods of making same
DE10151847A1 (de) 2001-10-24 2003-05-08 Bayer Ag Laserabsorbierende russarme Formmassen
EP2063423A1 (en) * 2007-11-15 2009-05-27 Deutsche Thomson OHG Shift-insensitive storage of information in page oriented optical data storage systems
US8343608B2 (en) * 2010-08-31 2013-01-01 General Electric Company Use of appended dyes in optical data storage media
CN112002782B (zh) * 2020-08-28 2022-03-01 河南师范大学 一种基于MnBi2Te4单层的纳米尺度光电传感器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6439647A (en) * 1987-08-05 1989-02-09 Sanyo Electric Co Optical recording disk
JPH0341640A (ja) * 1989-07-10 1991-02-22 Sanyo Electric Co Ltd 光記録媒体
JPH0461640A (ja) * 1990-06-27 1992-02-27 Victor Co Of Japan Ltd 追記型光ディスク
JP3020745B2 (ja) * 1992-08-06 2000-03-15 帝人化成株式会社 光学的記録材料及び光学的記録基板
US5648197A (en) * 1995-01-31 1997-07-15 Victor Company Of Japan, Ltd. Optical disk
JPH0954980A (ja) * 1995-08-08 1997-02-25 Mitsui Toatsu Chem Inc 光記録媒体

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DE19744162A1 (de) 1999-04-08
TW464855B (en) 2001-11-21
NO20001746D0 (no) 2000-04-05
NO20001746L (no) 2000-04-05
WO1999018571A1 (de) 1999-04-15
CA2305147A1 (en) 1999-04-15
KR20010024430A (ko) 2001-03-26
IL134872A0 (en) 2001-05-20
CN1273666A (zh) 2000-11-15
BR9812868A (pt) 2000-08-08
AU1026699A (en) 1999-04-27
EP1023724A1 (de) 2000-08-02

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