JP2005310271A - 色素成分の光記録媒体適性評価方法、光記録材料及び光記録媒体 - Google Patents
色素成分の光記録媒体適性評価方法、光記録材料及び光記録媒体 Download PDFInfo
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Abstract
【解決手段】 上記課題を解決する本発明の光記録媒体適性評価方法は、色素成分を含有する試料の温度又は該試料の周囲雰囲気の温度を2以上の異なる所定温度に設定し、その試料について各所定温度における所定波長の光の吸光度を測定する第1工程と、所定温度と吸光度との相関から設定される1以上の条件に基づき、色素成分を光記録媒体の記録層に含有した際の適性を評価する第2工程とを有するものである。
【選択図】 なし
Description
200≦T1≦250 …(1)
ここで、式(1)中、T1は、下記式(3);
A1=A25/2 …(3)
で表される関係を満足する吸光度が得られる所定温度を表す。また、式(3)中、A1はT1における吸光度を示し、A25は25℃における吸光度を示す。
0.50≦{(A200−A250)/A200}≦1.00 …(2)
ここで、式(2)中、A200は200℃における吸光度を示し、A250は250℃における吸光度を示す。
200≦T1≦250 …(1)
ここで、式(1)中、T1は、下記式(3);
A1=A25/2 …(3)
で表される関係を満足する吸光度が得られる所定温度を表す。
0.50≦{(AL−AH)/AL}≦1.00 …(14)
0.50≦{(A200−A250)/A200}≦1.00 …(2)
以下のS1〜S9で表される色素材料を常法により合成した。得られた色素材料、又はそれらの色素材料のうち2種を混合して調製した色素成分10mg、ポリカーボネート90mg及びジクロロメタン3.5gを混合して試料を調製(作製)した。得られた試料をを、膜厚100nmのAlを蒸着したガラス板(25mm×25mm×0.1mm)上にスピンコート法(2000rpm)により塗布して積層体を得た。さらに得られた積層体を80℃で1時間乾燥した。色素成分は表13に示す色素成分No.1〜8を用いた。なお表13中、かっこ内はそれぞれの色素材料の混合比率をモル基準で表したものである。
まず、一側にプリグルーブ(深さ0.12μm、幅0.30μm、グルーブピッチ0.74μm)を有する直径120mm、厚さ0.6mmのポリカーボネート樹脂基板を準備した。一方、色素成分No.1と同様の構成材料からなる色素成分を、その含有量が1.0質量%となるように、2,2,3,3−テトラフルオロプロパノールに加えて記録層用塗布液を調製した。得られた塗布液を上記ポリカーボネート樹脂基板のプリグルーブが形成された面上に塗布し、80℃で1時間乾燥させて記録層(厚さ150nm)を形成した。次いで、この記録層上に、スパッタ法によりAg反射層(厚さ100nm)を形成し、さらに、紫外線硬化樹脂SD−1700(大日本インキ化学工業社製、商品名)をAg反射層上にスピンコート法により塗布した後、紫外線を照射してアクリル樹脂からなる透明な保護層(厚さ8μm)を形成した。更に保護層上に紫外線硬化樹脂SD−301(大日本インキ化学工業社製、商品名)を塗布した。次いで、その上から上述と同様の厚さ0.6mmの透明基板を重ね、高速で回転して余分の紫外線硬化樹脂を除去した。その後、重ね合わせた透明基板越しに紫外線を照射して、上記紫外線硬化樹脂を硬化させて接着層とし、この接着層により保護層と透明基板を貼り合わせて、実施例1の光記録媒体(光記録ディスク)を作製した。
色素成分として、色素成分No.1と同様の構成材料からなるものに代えて、それぞれ色素成分No.2〜8と同様の構成材料からなるものを用いた以外は実施例1と同様にして、実施例2〜5及び比較例1〜3の光記録媒体(光記録ディスク)を得た。
実施例1〜5及び比較例1〜3の光記録媒体に対し、パルステック工業社製光ディスク評価装置(商品名:DDU−1000)を用いて、波長650nmのレーザー光を照射し、線速度28m/秒で信号を記録した。なお、上記装置に備えられた光ヘッドのレンズ孔径NAは0.60であった。また、記録はアイの中心が14T波形の中心に位置するアイパタ−ンが得られるような記録パワーで行った(表15参照)。記録後、PI(Inner-code-Parity)エラー(1ECCブロック当たりのエラー数)を測定した。
Claims (6)
- 色素成分を含有する試料の温度又は該試料の周囲雰囲気の温度を2以上の異なる所定温度に設定し、前記試料について前記各所定温度における所定波長の光の吸光度を測定する第1工程と、
前記所定温度と前記吸光度との相関から設定される1以上の条件に基づき、前記色素成分を光記録媒体の記録層に含有した際の適性を評価する第2工程と、
を有することを特徴とする色素成分の光記録媒体適性評価方法。 - 前記所定波長は、前記光記録媒体の記録及び/又は再生の際に前記光記録媒体に照射するレーザー光の有する波長よりも低いものであることを特徴とする請求項1記載の色素成分の光記録媒体適性評価方法。
- 前記所定波長は500〜650nmの範囲内のものであることを特徴とする請求項1又は2に記載の色素成分の光記録媒体適性評価方法。
- 前記条件が、下記式(1)及び(2)で表されるものであることを特徴とする請求項1〜3のいずれか一項に記載の色素成分の光記録媒体適性評価方法。
200≦T1≦250 …(1)
(式(1)中、T1は、下記式(3);
A1=A25/2 …(3)
で表される関係を満足する前記吸光度が得られる前記所定温度を表す。式(3)中、A1はT1における前記吸光度を示し、A25は25℃における前記吸光度を示す。)
0.50≦{(A200−A250)/A200}≦1.00 …(2)
(式(2)中、A200は200℃における前記吸光度を示し、A250は250℃における前記吸光度を示す。) - 光の照射により情報の記録が可能な光記録媒体に用いられる光記録材料であって、
前記光記録材料に含まれる色素成分は、
該色素成分を含有する試料の温度又は該試料の周囲雰囲気の温度を2以上の異なる所定温度に設定し、前記試料について前記各所定温度における所定波長の光の吸光度を測定した際に、下記式(1)及び(2)で表される条件を同時に満足するものであることを特徴とする光記録材料。
200≦T1≦250 …(1)
(式(1)中、T1は、下記式(3);
A1=A25/2 …(3)
で表される関係を満足する前記吸光度が得られる前記所定温度(単位:℃)を表す。式(3)中、A1はT1における前記吸光度を示し、A25は25℃における前記吸光度を示す。)
0.50≦{(A200−A250)/A200}≦1.00 …(2)
(式(2)中、A200は200℃における前記吸光度を示し、A250は250℃における前記吸光度を示す。) - 光の照射により情報の記録が可能な光記録媒体であって、
該光記録媒体に備えられる記録層に含まれる色素成分は、
該色素成分を含有する試料の温度又は該試料の周囲雰囲気の温度を2以上の異なる所定温度に設定し、前記試料について前記各所定温度における所定波長の光の吸光度を測定した際に、下記式(1)及び(2)で表される条件を同時に満足するものであることを特徴とする光記録媒体。
200≦T1≦250 …(1)
(式(1)中、T1は、下記式(3):
A1=A25/2 …(3)
で表される関係を満足する前記吸光度が得られる前記所定温度(単位:℃)を表す。式(3)中、A1はT1における前記吸光度を示し、A25は25℃における前記吸光度を示す。)
0.50≦{(A200−A250)/A200}≦1.00 …(2)
(式(2)中、A200は200℃における前記吸光度を示し、A250は250℃における前記吸光度を示す。)
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JP2004126042A JP2005310271A (ja) | 2004-04-21 | 2004-04-21 | 色素成分の光記録媒体適性評価方法、光記録材料及び光記録媒体 |
US11/103,475 US20060292327A1 (en) | 2004-04-21 | 2005-04-12 | Method for evaluating dye component suitability for optical recording media, optical recording material and optical recording medium |
TW094112729A TW200606936A (en) | 2004-04-21 | 2005-04-21 | Method for evaluating aptitude of pigment composition for optical recording medium, optical recording material, and optical recording medium |
CNB2005100661630A CN1311438C (zh) | 2004-04-21 | 2005-04-21 | 色素成分的光记录媒体适应性评价方法、光记录材料及光记录媒体 |
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Country Status (4)
Country | Link |
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US (1) | US20060292327A1 (ja) |
JP (1) | JP2005310271A (ja) |
CN (1) | CN1311438C (ja) |
TW (1) | TW200606936A (ja) |
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Family Cites Families (5)
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JPH0827983B2 (ja) * | 1989-05-02 | 1996-03-21 | 太陽誘電株式会社 | 光情報記録媒体 |
US5773193A (en) * | 1996-10-16 | 1998-06-30 | Eastman Kodak Company | Optical recording layers containing no k metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes |
US5976658A (en) * | 1996-11-01 | 1999-11-02 | Taiyoyuden Co., Ltd. | Optical information recording medium |
JP3336524B2 (ja) * | 1997-08-01 | 2002-10-21 | 太陽誘電株式会社 | 光情報記録媒体 |
JP3548929B2 (ja) * | 1999-03-23 | 2004-08-04 | 太陽誘電株式会社 | 光情報記録媒体 |
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2004
- 2004-04-21 JP JP2004126042A patent/JP2005310271A/ja active Pending
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2005
- 2005-04-12 US US11/103,475 patent/US20060292327A1/en not_active Abandoned
- 2005-04-21 CN CNB2005100661630A patent/CN1311438C/zh not_active Expired - Fee Related
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US20060292327A1 (en) | 2006-12-28 |
CN1311438C (zh) | 2007-04-18 |
TW200606936A (en) | 2006-02-16 |
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