CN101389487B - 光记录介质及其制造方法 - Google Patents

光记录介质及其制造方法 Download PDF

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CN101389487B
CN101389487B CN200780006083.3A CN200780006083A CN101389487B CN 101389487 B CN101389487 B CN 101389487B CN 200780006083 A CN200780006083 A CN 200780006083A CN 101389487 B CN101389487 B CN 101389487B
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group
substituted
optical recording
dye
recording layer
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CN101389487A (zh
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八代彻
水上智
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

本发明提供一种光记录介质，包括：其表面上具有沟槽和凹坑中的至少一种的基板；和形成于基板上的染料记录层，其中所述染料记录层包括下列通式(I)所表示的花青染料、下列通式(II)所表示的方形酸络合物、和胺化合物。
Figure 200780006083.3_AB_0

Description

光记录介质及其制造方法
技术领域
本发明涉及一种具有染料记录层的光记录介质，以及其制造方法。
背景技术
除了如光盘只读存储器(CD-ROM)这样的光记录介质以外，可记录CD(CD-R和CD-RW)也正在商业化并且被广泛地使用。
与常规的CD相反，CD-R和CD-RW具有如下特征：使用者可对其写入并且记录后产生的信号设计成满足常规的CD标准，使得它们可在市售的CD播放器上播放。
作为实现这种记录介质的制造的方法，例如，专利文献1公开了一种通过旋涂将染料涂布到基板上以形成光吸收层并通过在该光吸收层上设置金属反射层而制造CD-R盘的方法。
使用基于染料的材料作为光吸收层的材料。
CD-R的一个特征是其满足CD-R标准的高反射率(65％)。为了利用前述盘构造获得高反射率，光吸收层需要在用于记录和再现的激光束源的波长范围内具有特定的复折射率，而染料的光吸收性质的利用适合实现该目的。
然而，如图1中所示，有如下问题：复折射率非常依赖于波长，因为其利用了染料膜的光吸收谱中吸收带端部的特征。
作为下一代记录介质，通过使用约650nm波长的激光束而不是设计用于CD的约780nm波长的常规激光束，使能够进行高密度记录和/或再现的DVD-R和DVD+R商业化。含有前述用于CD-R的染料(例如，五甲炔花青染料或者酞菁染料)的记录材料的性能主要取决于激光束的波长；因此，导致不能满足650nm下的记录/再现特性。这是由于650nm下的大的吸收系数(k)和低的反射率，这使得信息记录/再现困难。
为了克服这个问题，提议将有机染料如三甲炔花青染料、偶氮染料和四氮杂紫菜嗪(tetra-azaporhirazine)用作调整染料或者记录材料的吸收波长范围的记录层材料。这些染料公开在例如专利文献2、3、4和5中。
除了近来可记录DVD盘的记录速度的增加之外，记录材料上也取得了改进；实例为在例如专利文献6、7和8中公开的方形酸络合物和三甲炔花青染料材料。
然而，即使采用这些记录材料，也难以同时实现高速记录特性和可存档性(archivability)(耐用性)。其原因为，尽管优选呈现出低的热分解温度和高的分解速度的记录材料，但是这些材料有可能引起耐热性和耐湿性的降低。通常，将两种以上的染料材料混合以避免这种问题，然而这导致下述问题。
当通过旋涂涂布染料记录膜的涂布溶液(所述涂布溶液通过将染料溶解在溶剂中获得)而沉积染料记录膜时，两种以上不同的记录材料(例如，含有离子结构的花青染料和螯合结构的角鲨烯化合物的涂布溶液)的结合使用更有可能在混合物中引起相互作用例如交换反应，导致由于化学变化而不能获得期望的特性。
具体而言，花青染料中的阴离子PF6 -离子是如此活泼以至其趋向于引起例如方形酸络合物的解螯合作用(dechelation)。
(专利文献1)日本专利申请公开(JP-A)No.02-42652
(专利文献2)日本专利(JP-B)No.2594443
(专利文献3)日本专利申请公开(JP-A)No.09-169166
(专利文献4)日本专利申请公开(JP-A)No.09-66671
(专利文献5)日本专利申请公开(JP-A)No.11-48612
(专利文献6)国际公布No.WO2002/050190
(专利文献7)日本专利(JP-B)No.3698708
(专利文献8)日本专利(JP-B)No.3659922
发明内容
本发明的目的是解决前述问题并且提供具有染料记录层的光记录介质，和一种制造该光记录介质的方法，所述介质的记录特性、耐用性和生产率优异。
本发明基于本发明人的发现，并且解决前述问题的方法如下：
<1>一种光记录介质，包括：其表面上具有沟槽(groove)和凹坑(pit)中的至少一种的基板；和形成于所述基板上的染料记录层，其中所述染料记录层包括下列通式(I)表示的花青染料、下列通式(II)表示的方形酸络合物、和胺化合物：
通式(I)
Figure G2007800060833D00031
其中R1和R2独立地表示可被取代的烷基基团、可被取代的芳基基团、或者可被取代的苄基基团，Z表示形成芳环的原子团，X表示一价阴离子，并且L表示形成羰花青的连接基团，
通式(II)
Figure G2007800060833D00032
其中R1和R2可相同或者不同，其为可被取代的烷基基团、可被取代的芳烷基基团、可被取代的芳基基团、或者可被取代的杂环，Q表示具有配位性质的金属原子，q表示整数2或者3，并且A表示可被取代的芳基基团、可被取代的杂环、或者Y＝CH-(其中Y表示可被取代的芳基基团或者可被取代的杂环)。
由于记录层至少含有前述花青染料、方形酸络合物和胺化合物，因而可防止混合时染料与其它成分的相互作用并且因此可提供记录特性、耐用性和生产率优异的具有染料层的光记录介质。
<2>根据<1>的光记录介质，其中所述记录层中的花青染料具有PF6 -作为阴离子。通过使用PF6 -作为染料记录介质中的花青染料的阴离子，可提供高速记录性能优异的光记录介质。
<3>根据<1>的光记录介质，其中所述记录层中的胺化合物的含量为10质量％以下。
如果所述染料记录层中的胺化合物的含量为10％以下，可保证染料混合时的稳定性而不引起记录特性的降低。
<4>根据<1>和<2>之一的光记录介质，其中所述胺化合物为含氮杂环化合物。
当所述胺化合物为含氮杂环化合物时，所述染料记录层的热分解温度提高并且可提供具有优异耐热性的光记录介质。
<5>一种制造光记录介质的方法，包括：将其中至少溶解下列通式(I)表示的花青染料、下列通式(II)表示的方形酸络合物、和胺化合物的溶剂涂布在基板的表面上，从而在基板上形成染料记录层，其中所述光记录介质包括其表面上具有沟槽和凹坑中的至少一种的基板和形成在所述基板上的染料记录层：
通式(I)
其中R1和R2独立地表示可被取代的烷基基团、可被取代的芳基基团、或者可被取代的苄基基团，Z表示形成芳环的原子团，X表示一价阴离子，并且L表示形成羰花青的连接基团，
通式(II)
Figure G2007800060833D00042
其中R1和R2可相同或者不同，其为可被取代的烷基基团、可被取代的芳烷基基团、可被取代的芳基基团、或者可被取代的杂环，Q表示具有配位性质的金属原子，q表示整数2或者3，并且A表示可被取代的芳基基团、可被取代的杂环、或者Y＝CH-(其中Y表示可被取代的芳基基团或者可被取代的杂环)。
使用本发明的该方法，可防止混合时染料与其它成分的相互作用。因此，本发明的方法提供优异的生产率。
<6>根据<5>的制造光记录介质的方法，其中所述胺化合物为液态叔胺。
在本发明的方法中使用液态叔胺，导致防止混合时染料与其它成分相互作用的强效果。此外，由于所述胺化合物是液体，因此所述胺化合物不包含于所得记录层中并且因此可实现本发明的效果。
<7>根据<5>和<6>之一的制造光记录介质的方法，其中所述溶剂为氟取代的醇。
氟取代的醇具有高的溶解性，因而当在本发明的方法中用于制备记录层的涂布溶液时，提供优异的生产率。
附图说明
图1示出了染料膜的吸收光谱。
图2示出了DVD+R或者DVD-R盘的层构造的实例。
图3示出了实施例和对比例中的染料膜的光吸收光谱。
具体实施方式
(运行)
图2示出了DVD+R或者DVD-R盘的层构造的实例。
该图中，标记1表示基板；2为染料制成的记录层；3为反射层；4为保护层；5为粘合层；6为覆盖基板；并且7为沟槽。通过用激光束光从基板1侧照射，信息记录在盘上或者从盘上再现。基板1具有形成在表面上的沟槽。
如可在CD播放器上播放的DVD+R和CD-R这样的记录介质的特征之一是轨道信息以摆动(wobbling)沟槽或者凹坑的形式嵌入。
摆动的程度可作为摆动信号从轨道信号检测。轨道信息通过FM调制或者相调制而调制给定频率以预先记录在基板中。
轨道信息包括地址信息和盘旋转频率信息。当从轨道信号检测摆动信号时，容易区分摆动信号与信息数据信号并且容易获得ROM信号兼容性。
本发明涉及上述的染料记录层材料。本发明的光记录介质为基板上至少具有染料记录层的光记录介质，所述基板具有形成于其表面上的沟槽和凹坑中的至少一种，其中所述记录层至少包括前述通式(I)表示的花青染料、前述通式(II)表示的方形酸络合物、和胺化合物。
通式(I)表示的花青染料和通式(II)表示的方形酸络合物，作为DVD记录材料具有优异的性能。
具体地，在通式(I)表示的花青染料中，通常使用下列式(3)表示的、具有PF6 -作为阴离子的那些，其取代基的各种组合列于表1，因为它们的热分解性质适合于高速记录。
然而，当与方形酸络合物混合时，例如PF6 -的离子引起涂布溶液酸性的增加，因此使得方形酸络合物解螯合。
式(3)
表1
Figure G2007800060833D00062
表1中，“Ph”表示苯基，“CH3”表示甲基，“Cl”表示氯原子，“i-Pr”表示异丙基，“环己基”表示由结合在一起的R3和R4形成的六元环，并且“萘基”表示与苯环一起形成的萘基团。
例如，表1中的No.1花青具有下式(4)所表示的结构。
式(4)
Figure G2007800060833D00071
通式(II)所表示的方形酸络合物的具体实例为下式(5)所表示的化合物，其取代基的各种组合列于表2。
式(5)
表2
Figure G2007800060833D00073
表2中，“Ph”表示苯基，“CF3”表示三氟甲基，“CH3”表示甲基，“t-Bu”表示叔丁基，“i-Pr”表示异丙基，“环己基”表示由结合在一起的R3和R4形成的六元环，并且“萘基”表示与苯环一起形成的萘基团。
例如，No.1和No.2方形酸络合物分别具有式(6)和(7)所表示的结构。No.3和No.7化合物中取代基R6的位置与式(7)中的相同。
式(6)
Figure G2007800060833D00081
式(7)
Figure G2007800060833D00082
为避免解螯合作用，在本发明中，加入胺化合物作为稳定剂。
胺化合物为防止氧化作用(解螯合作用)的碱性化合物。
同时，考虑到对前述染料的高溶解性，用于制备涂布溶液的常用溶剂为氟取代的醇如2，2，3，3-四氟丙醇。
溶剂的酸性、水含量等也影响胺的稳定能力。然而，难以控制这些参数并且其导致高的制造成本。当胺化合物为固体时，通过旋涂将其包含在记录层中。由于这个原因，胺化合物的含量优选不大于染料的10质量％；太高的含量影响记录层的光学特性和热物理性质，从而增大记录信号抖动(jitter)增加的可能性。
而太低的胺化合物含量使得难以获得稳定效果。特别优选的胺化合物含量范围相对于染料为0.5质量％～3质量％。
此外，优选具有含氮杂环的胺化合物。而且，优选熔点150℃以上的胺化合物。其理由是，当置于高温高湿度条件下时，熔点小于150℃的那些胺化合物更可能引起光吸收层特性(特别是光学特性)的变化。在那些胺化合物中，最优选咪唑、苯并咪唑和噻唑衍生物。
当胺化合物为少量存在的液体时，可在旋涂过程中或者加热过程之后将胺化合物从记录层中除去。
因而，如上所述，涂布溶液中的液体胺化合物的含量优选不大于10质量％，因为10％以上的含量使得难以除去胺化合物。
不需要使任何胺化合物存在于所得记录层中。
在液态胺化合物的情况下，优选使用叔胺(例如，三乙胺和三丙胺)，因为这提高了涂布溶液的碱性和胺的稳定能力。
设置在例如DVD+R盘中的染料记录层通常通过旋涂制造，该方法包括将涂布溶液逐滴地施用在旋转的基板上，随后通过进一步提高基板的旋转速度除去或者干燥溶剂。然而，该方法可利用少至10％～20％的涂布溶液以将膜沉积到基板上，并且剩余的涂布溶液留在旋涂罐中。罐中内容物的再利用称为“染料再循环”，其中所述罐中内容物(液体和固体)再次溶解在涂布溶剂中以制备涂布溶液。
通过使胺化合物存在于染料膜中，还可实现染料的再循环，同时保证涂布溶液的稳定性。
胺化合物的具体实例包括正丁胺、正己胺、叔丁胺、吡咯、吡咯烷、吡啶、哌啶、嘌呤、咪唑、苯并咪唑、5，6-二甲基苯并咪唑、2，5，6-三甲基苯并咪唑、萘并咪唑、2-甲基萘并咪唑、喹啉、异喹啉、喹喔啉、苯并喹啉、菲啶、二氢吲哚、咔唑、norharmon、噻唑、苯并噻唑、苯并噁唑、苯并三唑、7-氮杂吲哚、四氢喹啉、三苯基咪唑、苯邻二甲酰亚胺、苯并异喹啉-5，10-二酮、三嗪、萘嵌间二氮杂苯、5-氯代三唑、乙二胺、偶氮苯、三甲胺、三乙胺、N，N-二甲基甲酰胺、1(2H)-酞嗪酮(phthalazinone)、邻苯二甲酰肼、1，3-二亚氨基异二氢吲哚、噁唑、聚咪唑、聚苯并咪唑和聚噻唑。
可使用常规的花青染料而无需任何改性，其实例为JP-B No.2594443、3698708和3659922中所公开的那些花青染料。
特别是，如上所述，具有PF6 -作为阴离子的化合物适合于高速、高密度记录，因为它们热分解时产生少量的热。
可如花青染料一样，使用常规的方形酸络合物，并且这些方形酸络合物的实例为国际公布No.2002/050190和JP-A No.2004-244342中所公开的那些方形酸络合物。
(层构造)
下面，将详细地描述本发明的光记录介质中所设置的其它层的材料。
在本发明中使用的基板的材料可选自任何在常规记录介质的基板中使用的材料；实例包括丙烯酸类树脂如聚甲基丙烯酸甲酯、氯乙烯树脂如聚氯乙烯和聚氯乙烯共聚物、环氧树脂、聚碳酸酯树脂、无定形聚烯烃、聚酯、玻璃如钠钙玻璃、和陶瓷。
其中，考虑到形状稳定性、透明度和可变平的容易程度，优选聚甲基丙烯酸甲酯、聚碳酸酯树脂、环氧树脂、无定形聚烯烃、聚酯和玻璃。
而且，考虑到成型性，更优选聚碳酸酯树脂。
其上待沉积光记录层的基板表面可具有下涂层(undercoat layer)，用于改善平整度、提高粘合性能和防止光记录膜的劣化。
下涂层材料的实例包括：聚合物如聚甲基丙烯酸甲酯、丙烯酸/甲基丙烯酸共聚物、苯乙烯/马来酸酐共聚物、聚乙烯醇、N-羟甲基丙烯酰胺、苯乙烯/乙烯基磺酸共聚物、苯乙烯/乙烯基甲苯共聚物、氯磺化聚乙烯、硝化纤维素、聚氯乙烯、氯化聚烯烃、聚酯、聚酰亚胺、醋酸乙烯酯/氯乙烯共聚物、乙烯/醋酸乙烯酯共聚物、聚乙烯、聚丙烯和聚碳酸酯；有机材料如硅烷偶联剂；无机氧化物如SiO2和Al2O3；和无机材料例如无机氟化物如MgF2。注意，下涂层通常厚度为0.005μm～20μm，优选0.01μm～10μm。
为了形成跟踪沟槽(tracking groove)或者表示信息如地址信号的凹凸样式，可在基板或者下涂层上形成预沟槽(pre-groove)层。
所述预沟槽层的可用材料的实例包括光引发剂和至少一种选自丙烯酸的单酯、双酯、三酯和四酯的单体(或低聚物)的混合物。
而且，为了提高记录时的S/N比、反射率和灵敏度，在光记录层上设置反射层。用于制造反射层的光反射材料为在很大程度上反射激光束光的材料；实例包括金属和半金属，如Mg、Se、Y、Ti、Zr、Hf、V、Nb、Ta、Cr、Mo、W、Mn、Re、Fe、Co、Ni、Ru、Rh、Pd、Ir、Pt、Cu、Ag、Au、Zn、Cd、Al、Ca、In、Si、Ge、Te、Pb、Po、Sn、Si和Nd。
其中，优选Au、Al和Ag。这些金属和半金属可单独使用或者结合使用或者作为合金使用。注意，反射层通常厚度为100
Figure G2007800060833D00101
～3,000
Figure G2007800060833D00102
。
在光记录层(或反射层)上设置保护层，以便以物理和化学的方式保护光记录层等。
可将该保护层设置于基板未设置光吸收层的另一面，用于增加耐刮擦性和耐湿性。保护层材料的实例包括含有例如SiO、SiO2、MgF2、SnO2、ZnS或者ZnO作为主要成分的无机材料、热塑性树脂、热固性树脂和可UV固化的树脂。注意，保护层通常厚度为500
Figure G2007800060833D00111
～50μm。
除了前述染料材料-花青染料、方形酸络合物和胺化合物之外，当需要提高光稳定性、光学特性、耐温性、耐湿性等时，还可加入其它成分。
其它成分的实例包括花青染料、酞菁染料、吡喃鎓染料、硫代吡喃鎓染料、薁鎓(azulenium)染料、方形酸染料、偶氮染料、甲
Figure G2007800060833D00112
螯合染料、金属(例如，Na和Cr)络合物染料、萘醌染料、蒽醌染料、靛酚染料、靛苯胺染料、三苯基甲烷染料、三烯丙基甲烷染料、铵鎓染料、二亚铵鎓(diimmonium)染料和亚硝基染料。
下面将描述本发明制造光记录介质的方法。本发明制造具有DVD-R盘构造的光记录介质的方法的特征在于(1)通过涂布装置将含有染料化合物(I)和(II)及胺化合物作为主要成分的光记录层直接设置在基板的表面上或者在该光记录层和基板之间介入有层的情况下设置在该基板的表面上，所述表面上具有沟槽和凹坑中的至少一种，(2)通过真空沉积将反射层直接设置在光记录层上或者在光记录层和反射层之间介入有层的情况下设置在该光记录层上，和(3)在光记录层上设置保护层。
也就是说，本发明用于制造光记录介质的方法包括(1)通过涂布装置将含有染料化合物(I)和(II)及胺化合物作为主要成分的光记录层直接设置在基板表面上，或者在该光记录层和基板表面之间介入有层的情况下设置在该基板的表面上，所述表面上具有沟槽和凹坑中的至少一种，(2)通过真空沉积将反射层直接设置在光记录层上或者在光记录层和反射层之间介入有层的情况下设置在该光记录层上，和(3)在光记录层上设置保护层。
(光记录层形成步骤)
在本发明方法的第一个步骤中，通过涂布装置将含有染料化合物(I)和(II)及胺化合物作为主要成分的光记录层直接设置在基板表面上，或者在该光记录层和基板表面之间介入有层的情况下设置在该基板表面上，所述表面上具有沟槽和凹坑中的至少一种。更具体地说，将染料化合物(I)和(II)及胺化合物溶解在溶剂中以制备涂布溶液，随后将其涂布在基板上以形成光记录层。
可用于制备该涂布溶液的溶剂为已知的有机溶剂如醇、溶纤剂、卤代烃、酮和醚。
而且，旋涂为优选的涂布方法，因为可通过调节光记录层的浓度和粘度以及溶剂的干燥温度而控制层厚。
其上待沉积光记录层的基板表面设置有下涂层，用于改善平整度、提高粘合性能并且防止光记录膜的劣化。
该下涂层可通过将任何前述用于下涂层的材料溶解或者分散在合适的溶剂中并通过例如旋涂、浸涂或者挤出涂布的技术将所得涂布溶液涂布在基板上而形成。
(光反射层形成步骤)
在本发明方法的第二个步骤中，通过真空沉积将反射层直接设置在光记录层上或者在光记录层和反射层之间介入有层的情况下设置在该光记录层上。更具体而言，通过将任何前述光反射材料进行气相沉积、溅射或者离子镀而在光记录层上沉积反射层。
在本发明方法的第三个步骤中，在反射层上设置保护层。更具体而言，可通过真空沉积或者涂布任何前述用于保护层的材料(包括无机材料和各种类型的树脂)而形成保护层。特别优选采用可UV固化的树脂；通过旋涂涂布可UV固化的树脂随后施加UV使该树脂固化而形成保护层。
实施例
参照实施例和对比例对本发明进行描述，但是不应将其解释为本发明限于此。
(实施例1)
制备在聚碳酸酯盘(直径＝120mm，厚度＝0.6mm)上形成有沟槽(深度＝约1,600，宽度＝约0.24μm，磁道间距＝0.74μm)样式的基板。随后，在2，2，3，3-四氟丙醇中将表1中的No.1染料(花青染料(I))、表2中的No.2染料(方形酸络合物(II))、和5，6-二甲基苯并咪唑(胺化合物)混合在一起以制备用于染料记录层的涂布溶液。
将染料化合物在60℃下搅拌5小时溶解在溶剂中，并且将获得的涂布溶液通过旋涂涂布并在90℃下退火15分钟以形成约800
Figure G2007800060833D00122
厚的染料记录层。
染料浓度设定为1.0％，并且染料(1)∶染料(2)∶胺化合物比设定为60∶39∶1(以质量计)。所述涂布溶液的光吸收谱示于图3中。
随后通过使用氩气作为溅射气体溅射Ag合金(Ag/In＝99.5/0.5)将反射层沉积在记录层上至厚度为1,400
Figure G2007800060833D00131
。
在反射层上形成约4μm厚的由可UV固化的树脂制成的保护层以制造盘状制品，随后用可UV固化的树脂粘合剂将其结合到类似形状的聚碳酸酯覆盖基板上。这样，制造了DVD+R盘。
使用盘评价设备(PulseTec的ODU-1000和DDU-1000)在下述评价条件下评价记录介质。
(信号记录)
在下列条件下记录DVD(8-16)信号：激光波长＝659nm，透镜NA＝0.65，记录线速度＝16×(55.8m/s)。采用基于DVD+R标准的写入策略。
(信号记录)
盘在DVD-ROM播放器(透镜NA＝0.60，激光波长＝650nm)上以1×(3.5m/s)播放，用时间间隔分析器(Time Interval Analyzer)测量凹坑边缘时钟(edge-clock)的抖动(σ/T)。此外，测量对反射信号的反射率。成功获得了σ/T为7.2％和反射率为48％的优异的信号特性。
(对比例1)
除了不加入胺化合物以外，如实施例1中一样制造光记录介质，并且进行类似的信号评价。制造该光记录介质时所制备的染料涂布溶液的光吸收谱示于图3中，其不同于实施例1中制备的染料涂布溶液的光吸收谱。
信号评价结果如下：σ/T为9.5％和反射率为41％。这意味着与实例1相比，对比例1的信号特性差(即，σ/T增加且反射率降低)，导致不能满足DVD+R标准。
(实施例2)
除了制备含有不同量的胺化合物(0.5、2、3、5、8、和10重量％)的染料涂布溶液之外，如实施例1中一样制备染料涂布溶液，并测量它们的光吸收谱。表明吸收谱类似于实施例1中获得的吸收谱。
(实施例3)
除了将胺化合物从5，6-二甲基苯并咪唑变为三乙胺之外，如实施例1中一样制备染料涂布溶液，并且测量光吸收谱。如图3所示，其表明光吸收谱类似于实施例1中所获得的光吸收谱。而且，成功获得σ/T为7.5％和反射率为48％的优异的信号特性。
(实施例4)
除了将胺化合物从5，6-二甲基苯并咪唑变为三乙胺之外，如实施例1中一样制造DVD+R盘，并且测量吸收谱。成功获得σ/T为7.5％和反射率为48％的优异的信号特性。
(实施例5～10)
除了采用表3中实施例5～10所列的化合物和它们的比例之外，如实施例4中一样制造DVD+R介质，并随后进行信号评价。
表3中所示的评价结果表明在实施例5～10中制备的DVD盘全部呈现了优异的信号特性。
注意，在表3中花青染料编号“No.”对应于表1的染料编号，方形酸络合物编号“No.”对应于表2的染料编号，“DMBi”表示5，6-二甲基苯并咪唑，“Bi”表示苯并咪唑，且“TEA”表示三乙胺。
表3
Figure G2007800060833D00141
(实施例11)
除了将花青染料的阴离子变为ClO4 -之外，如实施例1中一样制造DVD+R盘，并随后进行信号评价。表3中所示的评价结果表明成功获得了优异的信号特性。

Claims (7)

1.一种光记录介质，包括：
其表面上具有沟槽和凹坑中的至少一种的基板；和
形成于所述基板上的染料记录层，
其中所述染料记录层包括下列通式(I)所表示的花青染料、下列通式(II)所表示的方形酸络合物和胺化合物。
通式(I)
Figure FSB00000010441200011
其中R1和R2独立地表示可被取代的烷基基团、可被取代的芳基基团、或者可被取代的苄基基团，Z表示形成芳环的原子团，X表示一价阴离子，并且L表示形成羰花青的连接基团，
通式(II)
其中R1和R2可相同或者不同，其为可被取代的烷基基团、可被取代的芳烷基基团、可被取代的芳基基团、或者可被取代的杂环，Q表示具有配位性质的金属原子，q表示整数2或者3，并且A表示可被取代的芳基基团、可被取代的杂环或者Y＝CH-，其中Y表示可被取代的芳基基团或者可被取代的杂环。
2.权利要求1的光记录介质，其中所述记录层中的花青染料具有PF6-作为阴离子。
3.权利要求1的光记录介质，其中所述记录层中的胺化合物的含量为10质量％以下。
4.权利要求1的光记录介质，其中所述胺化合物为含氮杂环化合物。
5.一种制造光记录介质的方法，包括：
将其中至少溶解下列通式(I)所表示的花青染料、下列通式(II)所表示的方形酸络合物和胺化合物的溶剂涂布在基板表面上，由此在所述基板上形成染料记录层，
其中所述光记录介质包括其表面上具有沟槽和凹坑中的至少一种的基板，以及所述基板上的染料记录层：
通式(I)
Figure FSB00000010441200021
其中R1和R2独立地表示可被取代的烷基基团、可被取代的芳基基团、或者可被取代的苄基基团，Z表示形成芳环的原子团，X表示一价阴离子，并且L表示形成羰花青的连接基团，
通式(II)
其中R1和R2可相同或者不同，其为可被取代的烷基基团、可被取代的芳烷基基团、可被取代的芳基基团、或者可被取代的杂环，Q表示具有配位性质的金属原子，q表示整数2或者3，并且A表示可被取代的芳基基团、可被取代的杂环或者Y＝CH-，其中Y表示可被取代的芳基基团或者可被取代的杂环。
6.权利要求5的制造光记录介质的方法，其中所述胺化合物为液态叔胺。
7.权利要求5的制造光记录介质的方法，其中所述溶剂为氟取代的醇。
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