CN1628346A - 彩色数据存储介质 - Google Patents

彩色数据存储介质 Download PDF

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CN1628346A
CN1628346A CNA018166148A CN01816614A CN1628346A CN 1628346 A CN1628346 A CN 1628346A CN A018166148 A CNA018166148 A CN A018166148A CN 01816614 A CN01816614 A CN 01816614A CN 1628346 A CN1628346 A CN 1628346A
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storage medium
base material
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laser light
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C·R·克拉迪克
S·R·佩克
C·J·布兰德
S·F·胡巴德
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General Electric Co
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Abstract

一种彩色数据存储介质,包括一种基材,该基材由着色剂和塑料组成,其中,当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光的波长处,此基材具有约85%或更小的透射率。此外该存储介质包括:包含一种荧光着色剂和塑料的基材,其中该基材的荧光彩色发射波长不等于读回激光波长。

Description

彩色数据存储介质
                    相关申请交叉参考
本申请要求2000年9月29日美国临时申请60/236,434的优先权,在此,其内容引作参考。
技术领域
本发明涉及数据存储介质,尤其涉及荧光、塑料数据存储介质。
背景技术
光、磁及磁-光介质是高性能存储技术的主要来源,该技术具有以合理价格存储每兆字节的高存储容量。在音频、视频、计算机数据应用,如光盘(CD)、包括多层结构如DVD-5,DVD-9,多侧格式如DVD-10和DVD-18的数字视觉光盘(DVD)、磁光盘(MO)和其它一次写入和可重写入格式如CD-R,CD-RW,DVD-R,DVD-RW,DVD+RW,DVD-RAM中,光学介质的应用越来越广泛。在这些和其它格式中,将数据在基材上编码成为数字化数据序列。在已记录的介质中,如CD,数据通常是通过注射成型、冲压或其它方法在塑料基材的表面上形成的坑和凹槽。
在可记录和可重写入介质中,通过激光将数据编码,激光照射一种活性数据层,该层经历一种相变化,产生一系列高反射或无反射区,构成数据流。在这些格式中,激光束在到达数据层之前,首先穿过一种塑料基材。在数据层,按照编码数据该激光束反射或不反射。然后激光通过塑料返回,进入翻译数据的光学检测系统。
本技术领域众所周知,由于光读出系统的敏感性,通过介质的光吸收量应该最小化。因此,光学介质中的塑料是一种无色、具有较好双折射性质的透明材料,如聚碳酸酯。虽然介质格式已经确定了从基材顶面读出的数据,但是大多数回放系统仅与需要激光两次通过基材的介质相容。因此需要对激光透明,并且通常在激光波长条件下使用无色材料使透明度最大。
除了在光学介质的顶面上印刷方法昂贵之外,普遍使用无色、透明材料会使产品区别困难。而且打印装饰盖在整个盘的一个表面上,所盖的盘表面不能进行数据存储。
本领域需要彩色塑料组合物作为光学介质。
发明内容
本发明的彩色数据存储介质克服了上述不利和缺点。在一个实施方案中,介质包括:一种包含着色剂和塑料的基材,其中,读回激光穿过1.2mm厚的彩色基材(磁盘)时,在读回激光的波长处,此基材具有约85%或更小的透射率。
在另一实施方案中,介质包括:一种包含荧光着色剂和塑料的基材。其中,基材具有不等于读回激光波长的荧光彩色发射波长。
本发明涉及数据存储介质,即彩色光学数据存储介质和它的制造方法。在一种实施方案中,读回激光穿过1.2mm厚的彩色基材(磁盘)时,在读回激光的波长处,彩色介质具有大约85%或更小的光透射率,优选大约70%-85%,更优选大约75%-80%,特别优选大约75%-85%。或者,如果是荧光,则介质的发射光波长优选不抑制数据检索。荧光介质可包括一种基材,当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光的波长处该基材的光透射率超过68%,优选大约70%-95%,更优选大约70%-90%,最优选大约70%-85%。
通常这些存储介质可包括一种基材,基材包含一种塑料和一种着色剂,着色剂不抑制数据检索。以基材的总重量为基准,通常所用着色剂最高含量为10wt%,优选最高5wt%,更优选最高1wt%,特别优选小于0.5wt%或更少。
理论上,表现出适当性能的任何塑料都能使用,但塑料应该能够经得起后期的加工参数(如应用层压时)如喷溅加工(通常温度高达或超过约200℃,对于磁介质,通常高达或超过约300℃,对于磁光介质,通常温度从室温(25℃左右)到150℃左右)。也就是说,对于塑料,期望的是具有充分的热稳定性以防止在沉积阶段变形。对于磁介质,适当的塑料包括玻璃化转变温度大于150℃的热塑性塑料,优选的是玻璃化转变温度大于200℃的热塑性塑料(如聚醚酰亚胺,聚醚醚酮,聚砜,聚醚砜,聚醚醚砜,聚苯醚,聚酰亚胺,高热聚碳酸酯等),更优选的是玻璃化转变温度大于250℃的热塑性塑料,如聚醚酰亚胺,其中砜二苯胺或氧化二苯胺被取代为间苯二胺,以及其它聚酰亚胺,如Probimide(或Giba Geigy化学公司的干燥粉末等同物,Matrimid5218),包含至少一种上述塑料和其它物质的组合。
另外,对于热固性塑料,假设在冲压条件下热固性塑料具有足够的流动性以形成所需表面特征,那么应用该热固性塑料是可能的。由于各种应用可能需要具有不同玻璃化转变温度的聚合物,因此调节塑料的玻璃化转变温度(均聚物、共聚物或共混物)以使膜具有所需玻璃化转变温度是有利的。对于这一目的,如美国专利5,534,602(1996,Lupinski和Cole)所述的聚合物共混物可用于涂布溶液的制备。在这个实例中,聚合物共混物选择性地提供从190℃-320℃的可变玻璃化转变温度。
一些可能的塑料实例包括(但并不局限于此)无定形、结晶和半结晶热塑性材料:聚氯乙烯,聚烯烃(包括但不局限于此:线性和环状聚烯烃,包括聚乙烯,氯化聚乙烯,聚丙烯等),聚酯(包括但不局限于此:聚对苯二甲酸乙二醇酯,聚对苯二甲酸丁二醇酯,聚对苯二甲酸环己基亚甲基酯等),聚酰胺,聚砜(包括但不局限于此:氢化聚砜等),聚酰亚胺,聚醚酰亚胺,聚醚砜,聚苯硫醚,聚醚酮,聚醚醚酮,ABS树脂,聚苯乙烯(包括但不局限于此:氢化聚苯乙烯,间规和无规聚苯乙烯,聚环己基乙烯,苯乙烯-丙烯腈共聚物,苯乙烯-马来酸酐共聚物等),聚丁二烯,聚丙烯酸酯(包括但不局限于此:聚甲基丙烯酸甲酯,甲基丙烯酸甲酯-聚酰亚胺共聚物等),聚丙烯腈,聚缩醛,聚碳酸酯,聚苯醚(包括但不局限于此:2,6-二甲基苯酚衍生物和2,3,6-三甲基苯酚共聚物等),乙烯-乙酸乙烯酯共聚物,聚乙酸乙烯酯,液晶聚合物,乙烯-四氟乙烯乙烯共聚物,芳香族聚酯,聚氟乙烯,聚偏氟乙烯,聚偏氯乙烯,特氟隆,以及热固性树脂,如环氧树脂,酚醛树脂、醇酸树脂,聚酯,聚酰亚胺,聚氨酯,矿物填充硅氧烷,二马来酰亚胺,氰酸酯,乙烯基树脂,苯并环丁烯树脂,另外,还有包含至少一种上述塑料的共混物、共聚物,混合物、反应产物和组合物。
这里使用的术语“聚碳酸酯”、“聚碳酸酯组合物”和“包含芳香族碳酸酯链单元的组合物”包括具有分子式(I)结构单元的组合物。
Figure A0181661400101
其中R1基团总数的至少60%为芳香族有机基团,其余的为脂肪族、脂环族或芳香族基团。R1优选芳香族有机基团,更优选的是一种分子式(II)的基团:
        -A1-Y1-A2-                              (II)
其中,A1和A2为一种单环二价芳基,Y1为一种具有将A1和A2分开的一个或两个原子的桥基。在一个实施方案中,一个原子将A1和A2分开。举例说明,并不限制这类基团,它们是-O-,-S-,-S(O)-,-S(O2)-,-C(O)-,亚甲基,环己基亚甲基,2-[2,2,1]-二环亚庚基,亚乙基,异亚丙基,亚新戊基,亚环己基,亚环十五烷基,亚环十二烷基和亚金刚烷基。桥基Y1可以是烃基或饱和烃基如亚甲基,亚环己基或异亚丙基。
聚碳酸酯可由二羟基化合物的界面反应得到。其中只有一个原子将A1和A2分开。这里所用术语“二羟基化合物”包括如二苯酚化合物,它的通式(III)如下:
Figure A0181661400103
其中,Ra和Rb分别代表卤素原子或一价烃基,它们可以相同或不同;p和q分别为从0-4的整数;Xa代表下式(IV)基团之一。
其中,Rc和Rd分别独立地代表氢原子或一价线形或环状烃基,Re是二价烃基。
合适的二羟基化合物的非限制例子包括美国专利4,217,438中公开的(一般的和具体的)二羟基酚和二羟基取代芳香烃,该专利包括在这里的参考文献中。双酚类化合物的具体例子可用分子式(III)代表,包括以下:1,1-二(4-羟苯基)甲烷;1,1-二(4-羟苯基)乙烷;2,2-二(4-羟苯基)丙烷(下文的“双酚A”或“BPA”);2,2-二(4-羟苯基)丁烷;2,2-二(4-羟苯基)辛烷;1,1-二(4-羟苯基)丙烷;1,1-二(4-羟苯基)正丁烷;二(4-羟苯基)苯基甲烷;2,2-二(4-羟基-1-甲基苯基)丙烷;1,1-二(4-羟基-叔丁基苯基)丙烷;二(羟芳基)烷烃如2,2-二(4-羟基-3-溴苯基)丙烷;1,1-二(4-羟苯基)环戊烷;二(羟芳基)环烷烃如1,1-二(4-羟苯基)环己烷;及至少一种上述化合物的组合物。
也可使用聚碳酸酯,聚碳酸酯通过两种或两种以上不同的二羟基酚或二羟基酚共聚物与乙二醇或与羟基或酸封端的聚酯或与二元酸、羟基酸、脂肪族二酸聚合得到,如果希望得到的是碳酸酯共聚物而非均聚物则使用脂肪族二酸。通常有用的脂肪族二酸具有2-40个碳原子。一种优选的脂肪族二酸是十二双酸。也可以使用聚芳基酯、聚(酯-碳酸酯)树脂或它们的共混物。支化聚碳酸酯也是有用的,以及线形聚碳酸酯和支化聚碳酸酯的共混物。支化聚碳酸酯可由在聚合期间添加支化剂制备。
这些支化剂是众所周知的,可以包括含有至少三种官能团的多官能团有机化合物,官能团可以是羟基、羧基、酸酐、三卤甲基及包含至少一种上述基团的混合物。具体例子包括1,2,4-苯三酸、1,2,4-苯三酸酐、1,2,4-苯三酰氯、三-对羟基苯基乙烷、靓红-双酚、三酚TC(1,3,5-三((对羟苯基)异丙基)苯),三酚PA(4(4(1,1-二(对羟苯基)-乙基)-α,α-二甲基苯甲基)苯酚),4-氯甲基邻苯二甲酸酐,1,3,5-苯三酸,二苯甲酮四元羧酸等。支化剂的添加量为0.05-2.0wt%。支化剂和制备支化聚碳酸酯的步骤如美国专利3,635,895和4,001,184所述,该专利包括在参考文献中。这里设想了所有类型的聚碳酸酯端基。
优选的聚碳酸酯基于双酚A,其中A1和A2分别为对亚苯基,Y1为异亚丙基。聚碳酸酯的重均分子量优选5,000-100,000,更优选10,000-65,000,最优选15,000-35,000。
评价和检测聚碳酸酯的合成,特别注意的是测定在聚碳酸酯中Fries产物的浓度。大量Fries产物的生成可导致聚合物支化,结果不能控制熔体行为。这里的术语“Fries”和“Fries产物”表示聚碳酸酯中具有分子式(V)的重复单元。
其中,Xa是一种在前面分子式(III)描述的二价基团。
聚碳酸酯组合物还可包括平常包括在这类树脂组合物中的各种添加剂。添加剂如,填充剂或增强剂;热稳定剂;抗氧剂;光稳定剂;增塑剂;抗静电剂;脱模剂;添加树脂;发泡剂等以及包含上述至少一种添加剂的组合。填充剂或增强剂的例子包括玻璃纤维、石棉、碳纤维、二氧化硅、滑石和碳化钙。热稳定剂的例子包括三苯基亚磷酸酯、三-(2,6-二甲基苯基)亚磷酸酯、三-(混合的单和二壬基苯基)亚磷酸酯、二甲基苯膦酸酯和三甲基磷酸酯。抗氧剂的例子包括十八烷基-3-(3,5-二叔丁基-4-羟苯基)丙酸酯、季戊四醇-四[3-(3,5-二叔丁基-4-羟苯基)丙酸酯]。光稳定剂的例子包括2-(2-羟基-5-甲基苯基)苯并三唑、2-(2-羟基-5-叔辛基苯基)-苯并三唑、2-羟基-4-正辛氧基二苯甲酮。增塑剂的例子包括二辛基-4,5-环氧基-六氢邻苯二甲酸酯、三-(辛氧基羰基乙基)异氰酸脲、三硬脂酸甘油酯和环氧化豆油。抗静电剂的例子包括单硬脂酸甘油酯、硬脂酰磺酸钠、十二烷基苯磺酸钠。脱模剂的例子包括硬脂酰硬脂酸酯、蜂蜡、蒙旦蜡和石蜡。其它树脂的例子包括但并不局限于聚丙烯、聚苯乙烯、聚甲基丙烯酸甲酯和聚苯醚。也可使用上述几种添加剂的组合。在混合这些组分以形成组合物期间,在适当的时间加入添加剂。
用着色剂(如染料、颜料之类)为基材着色。选择着色剂的量和种类,以避免所生产的基材含有导致数据读取错误的污染物(如副产物),并得到期望的彩色,同时当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光的波长处,控制透射率大于约68%。与传统的认识相反,基材可以是荧光的,即它在特征波长发射光。在此实施方案中,着色剂是一种荧光材料,该材料具有荧光彩色发射波长,该波长不等于读回激光波长,优选与读回激光波长至少相差10nm(如较高或较低),更优选相差15nm或更多,特别优选相差20nm或更多。这里进一步优选的是当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光频率处,基材具有大于约70%的透射率。
一些荧光着色剂包括:
种类 组成
C.I.颜料红181 苯并硫代苯酮(C18H10Cl2O2S2)
C.I.溶剂橙63 14H-蒽{2.1.9-MNA}噻吨-14-酮
C.I.分散红364 2(3-氧代苯并噻酚2(3H))苯并硫代苯酮
C.I.溶剂蓝97 蒽醌1,4-二(2,6-二乙基-4-甲基苯基)氨基蒽二酮
C.I.溶剂绿5 3,9-二萘嵌苯二羧酸,二-2-甲基丙基酯
C.I.溶剂黄98 2-十八烷基噻吨异喹啉
以及其他荧光着色剂,包含至少一种上述着色剂的组合。
可通过一种装饰层将彩色或花纹赋予基材,并不包括吸收百分率限制。装饰层放置在盘的数据存储层对面,或在数据存储层之间,从盘的对侧读取数据,装饰层可以是任何彩色或花纹,如任选包括一种火花的花纹,也就是说起散射入射光的视觉材料(Visual effects),如玻璃或金属(以层、片、颗粒、粉末等形式,以及至少包括上述一种形式的组合形式存在,优选层形式),二氧化钛(TiO2),云母、玻璃纤维,角度位变异构材料如ChromaFlair金/银080,ChromaFlair青/紫230(加利福尼亚Santa Rosa Flex产品,商业可得到),其它材料,以及包含至少一种上述材料的组合。
除了塑料和着色剂,组合物可任选包括通常包括在这类树脂组合物中的各种添加剂。添加剂可包括抗氧剂、热稳定剂、抗静电剂(四烷基苯磺酸铵盐,四烷基苯磺酸鏻盐等),脱模剂(四硬脂酸季戊四醇酯;单硬脂酸甘油酯等)之类,以及包含至少上述一种物质的组合。例如,以基材总重量为基准,基材可包含约0.01-0.1wt%的热稳定剂;约0.01-0.2wt%的抗静电剂;约0.1-1wt%的脱模剂。
一些抗氧剂包括,例如有机亚磷酸酯,如三(壬基-苯基)亚磷酸酯,三(2,4-二叔丁基苯基)亚磷酸酯,二(2,4-二叔丁基苯基)季戊四醇二亚磷酸酯,二硬脂基季戊四醇二亚磷酸酯等;烷基化单酚,多酚及多酚与二烯类的烷基化反应产物,如四[亚甲基(3,5-二叔丁基-4-羟基氢化肉桂酸酯)]甲烷,3,5-二叔丁基-4-羟基氢化肉桂酸十八烷酯,2,4-二叔丁基苯基亚磷酸酯等;对甲苯酚与二环戊二烯的丁基化反应产物;烷基化的对苯二酚;羟基化硫代二苯基醚;亚烷基双酚;苄基化合物;β-(3,5-二叔丁基-4-羟苯基)丙酸与单羟基或多羟基醇的酯;β-(5-叔丁基-4-羟基-3-甲基苯基)丙酸与单羟基或多羟基醇的酯;硫代烷基或硫代芳基化合物的酯,如二硬脂酰硫代丙酸酯,二月桂酰硫代丙酸酯,二-十三烷基硫代二丙酸酯等;β-(3,5-二叔丁基-4-羟苯基)丙酰胺等,以及包含至少上述一种物质的组合。
可以使用的其它潜在添加剂包括:紫外线吸收剂;稳定剂如光和热稳定剂(例如基于磷酸的化合物);受阻酚;氧化锌和/或硫化锌颗粒;润滑剂(矿物油之类);增塑剂;染料(奎宁、偶氮苯之类);以及包含至少上述一种添加剂的组合。
为了辅助塑料(特别是聚碳酸酯)加工,在挤出机或其它混合装置中,还可以使用催化剂。催化剂典型地辅助控制所得材料的粘度。可能的催化剂包括四烷基氢氧化铵,四烷基氢氧化鏻等,优选二乙基二甲基氢氧化铵和四丁基氢氧化鏻。催化剂可单独使用,或与酸之类的猝灭剂组合使用,如磷酸等。另外,在化合期间可将水注入到聚合物熔体中,当水蒸汽经过排气孔时将其除去,以除去残留的挥发性化合物。
制造数据存储介质,首先用常规的反应容器将各种前体充分混合以形成塑料,能够将前体充分混合的容器如单螺杆或双螺杆挤出机、捏合机、混炼机等。前体能与着色剂(如颗粒、粉末和/或液体形态)预混,并且同时通过加料斗喂入挤出机,或者着色剂可任选加入到进料喉管,或通过一种注射成型机或其它成型机的交替注射孔。
挤出机应保持足够高的温度将塑料前体熔融,且不产生分解。对于聚碳酸酯,例如可使用220℃-360℃的温度,优选260℃-320℃。同样在挤出机中的驻留时间应控制在使分解最小,驻留时间可采用最多2分钟或更多,优选最多1.5分钟,特别优选最多1分钟。在挤成所需形态(通常是粒,片,网等)之前,可任选地过滤混合物,如采用熔体过滤和/或使用筛网等,以除去不想要的污染物或分解产物。
一旦生产出塑料组合物,可用各种成型和/或加工技术将其制成数据存储介质。可能的成型技术包括注射成型、铸膜、挤出、压制成型、吹塑成型、冲压等。一旦生产出基材,可以采用进一步的加工技术在彩色基材上处理所需的层,如电镀、涂布技术(旋涂、喷涂、气相沉积、筛绢印花、涂漆、浸涂等)、层压、溅射,及包含至少一种上述加工技术的组合,以及本领域其它已知的技术。
聚碳酸酯数据存储介质的一个例子包括一种注射成型的彩色聚碳酸酯基材,该基材可任选包括中空(气泡、洞等)或填充(各种形式的金属、塑料、玻璃、陶瓷等,存在形式如纤维、球、粒等)的核。放置在基材上的是各种层,包括:数据层、介电层、反射层和/或保护层,以及包含至少上述一种层的组合层。这些层包含常用的材料,并按照所生产介质的类型放置。例如,对于第一表面介质,这些层可以是保护层、介电层、数据存储层、介电层、与基材接触放置的反射层、在基材对面放置的任选装饰层。同时,对于光学介质,这些层可以是任选装饰层、保护层、反射层、介电层、数据存储层、然后是与基材接触的介电层。应该理解介质的形式并不限制盘的形状,而可以是与读出装置相符的任何形状。
数据存储层可包括任何能存储可读取数据的材料,如光学层、磁层或磁-光层。典型的数据存储层厚度不超过600埃,优选厚度不超过300埃。可能的数据存储层包括但并不局限于氧化物(如硅氧化物)、稀土元素-过渡金属合金,镍、钴、铬、钽、铂、铽、镓、铁、硼,其它金属和合金,及包含至少上述一种物质的组合,有机染料(例如花青或酞菁类染料),和无机相变化合物(例如TeSeSn,和InAgSb等)。
防尘、防油、防其它污染物的保护层的厚度可大于10埃到小于100微米,在一些实施方案中,优选厚度约300埃或更小,特别优选厚度约100埃或更小。保护层的厚度通常至少部分地通过所使用的读/写装置的类型来确定,如磁、光或磁一光。保护层包括防腐材料,如金、银、氮化物(如氮化硅和氮化铝等)、碳化物(如碳化硅等)、氧化物(如二氧化硅等)、聚合物材料(如聚丙烯酸酯或聚碳酸酯)、碳膜(金刚石、类金刚石等),以及至少包含上述一种物质的组合。
介电层放置在数据存储层的一侧或两侧,并且经常用作热控制器。典型的厚度为最多或大于1000埃并且低到200埃左右或更低。介电层包括氮化物(如氮化硅、氮化铝等);氧化物(如氧化铝);碳化物(如碳化硅等),以及至少包括上述一种物质的组合,其它与环境相容并且优选不与周围层反应的材料。
反射层应具有足够的厚度以反射足够的能量(如光),从而能够进行数据读取。典型的反射层厚度不大于700埃,通常优选厚度约300-600埃。反射层包括任何能反射特定能量场的材料,包括金属(如铝、银、金、钛、及至少包括上述一种金属的混合物和合金等)。
除了数据存储层之外,还可以采用介电层、保护层、反射层、其它层如润滑层等。常用的润滑层包括氟化合物,特别是四氟化物油和润滑酯等。
提供下列实施例用于进一步说明本发明,但并非限制本发明。
                      实施例
通过混合低粘度聚碳酸酯树脂粉末(250℃时熔融指数为11g/10min(ASTM-D1238),分子量17,700(g/mol),用GPC(凝胶渗透色谱仪)测定)和列于表中的着色剂制备着色丸粒。配方中还包括脱模剂(0.02wt%的单硬脂酸甘油酯)和Doverphos(S-9228);二(2,4-二枯基苯基)季戊四醇二磷酸酯抗氧剂(0.02wt%)。共混物在30毫米双螺杆挤出机中熔融后,通过口模、冷却并造粒。
用Krauss Maffei 80/190℃ Marathon系列,CD衬板,w/非开口模具,将所得颗粒注塑成型为1.2mm厚光盘基材。加工条件如下:桶区温度250-330℃;成型温度设定在45℃;注射速度分布约20mm/s-65mm/s,四个阶段;保持压力分布约150-550巴,五个阶段;保持压力时间约0.05-0.25秒,五个阶段;冷却时间设定在2.5秒;锁模力设定在400kN;注射压力设定在1795巴;注射位置分布约17.0mm-4.5mm,四个阶段。将得到的盘在CD辅助SL100光试验仪上进行块出错率试验。块出错率(BLER)是一种出现至少一个错误数据的数据块数目的测量方法。BLER是E21+E21+E31+E12+E22+E32错误的组合。工业上通常要求块出错率约220脉冲以下,优选100脉冲以下,特别优选50脉冲以下。
也可将颗粒注塑成型为1.2mm厚的彩色基材(盘),将该盘放置在分光光度计,测定780nm(即光盘试验仪波长)处的吸收值。如果试验仪读不出该盘,则会给出一个错误信息,如“不能读取VTOC(1FB)”的提示。该提示是指试验仪不能建立“内容卷标”,这种信息显示盘中程序的设计。
  表
  颜色     着色剂     含量(%)     在780nm的TRM 介电测试     BLER
  空白     -     -     95.0 通过     6.2
  lt.橙荧光     R672:CI溶剂橙63     0.005     94.8 通过     15.4
  dk.橙荧光     R65:C.I.颜料红181     0.005     94.7 通过     9.5
  红紫色荧光     R663:Kenawax荧光红3BYP     0.050     94.7 通过     38.5
  lt.亮蓝     R73:C.I.溶剂蓝97R513:2.5-二(5′-叔丁基-2-苯并噁唑基)噻吩     0.00030.008     94.4 通过     25.6
  绿/黄荧光     R887:C.I.溶剂绿     0.100     94.6 通过     13.7
  lt.亮绿     R882:C.I.溶剂黄98R73:C.I.溶剂蓝97     0.000070.0004     94.7 通过     31.2
  绿紫     AM190:ChromaFlair绿/紫190     0.110     67.9 失败
  金银     AM080:ChromaFlair金/银080     0.060     65.8 失败
  青紫     AM230:ChromaFlair青/紫230     0.100     65.3 失败
  Sandorin蓝     R7260:颜料蓝60     0.010     71.1 通过     64.1
  粉红玻璃屑     R666:C.I.溶剂红207R203:碳黑Monarch 800R71:C.I.溶剂紫13R0979:Engelhard Mearl颜料EP97079     0.0090.0000220.000220.200     91.4 失败
  绿玻璃屑     R203:碳黑Monarch 800R883:C.I.颜料黄138R36:溶剂绿28R0979:Engelhard Mean颜料EP97079     0.00001330.007120.003290.200     90.9 失败
TRM=传输通过基材的光的量
BLER=脉冲
失败=不能读取内容卷标(VTOC)
介电测试=CD光学测试仪
C.I.=颜色指数
R0979-购自Engelhard,Peekskill,NY
R672-购自Clariant,Charlotte,NC
R65-购自Clariant,Charlotte,NC
R663-购自Clariant,Charlotte,NC
R73-购自Bayer,Pittsburgh,PA
R513-购自Ciba,Tarrytown,NY
R887-购自Bayer,Pittsburgh,PAR882-购自Clariant,
Charlotte,NC
R7260-购自BASF,Mt.Olive,NJ
R666-购自Rose Color,New Ark,NJ
R203购自Cabot,Alpharetta,GA
R71-购自Bayer,Pittsburgh,PA
R883-购自BASF,Mt.Olive,NJ
R36-购自Bayer,Pittsburgh,PA
AM190-购自Flex Products,Santa Rosa,CA
AM080-购自Flex Products,Santa Rosa,CA
AM230-购自Flex Products,Santa Rosa,CA
然而,另一种用于生产区别的、彩色盘的技术已经不再用于光学介质基材,这是由于激光的吸收,这会干扰数据的读取。此外,在光学介质基材中使用光学作用如荧光也未尝试过,因为荧光中给定颜色的光被吸收并在不同颜色重新发射,荧光发射会干扰激光读取系统。类似地,也未开发出其它可以散射入射激光束的视觉材料,这是因为直至如今光学介质是由1层基材组成的,例如在CD中。近年来DVD的发展包括了第二基材层,除丁在多侧介质的情况,它可以用于装饰目的。使用无机填料如玻璃屑来产生视觉材料会改变热塑性树脂的流变学性质,使得难以从这些组合物来生产光学介质基材。
在光学介质基材中使用颜色或其它视觉材料为标识不同的光学介质提供了一种方法。这种标识区别可以用于商场、商标识别方面的需求,并且可以帮助避免不希望的数据复制问题。彩色基材还可以提供一个优点,即用无色材料不能得到波长选择性。
包含视觉材料的数据存储介质基材先前并没有生产出来,这是因为视觉材料对流变学产生明显不利的影响。以前是用装饰标签贴在基材表面上。与之相反,本文所述的基材可以包含视觉材料层作为基材的一部分,即放置在基材一面的模塑层。此外视觉材料层可以放置在两个基材之间,基材含有反射层和数据层,这些层放置在视觉材料层和基材之间,任选地可以采用粘合剂来粘结。这些视觉材料可以用于许多目的,包括产品识别、装饰、防盗版等等。
尽管在此已经显示并描述了优选的实施方案,但是各种改动和代替都可以作出,只要不背离本发明的主旨和范畴。因此应该理解本说明书仅仅是说明性的描述,而非对本发明的限制。

Claims (33)

1.一种彩色数据存储介质,包括:
一种包含着色剂和塑料的基材,其中,当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光的波长处,此基材具有约85%或更小的透射率。
2.权利要求1的存储介质,其中,以基材的总重量为基准,基材包括不大于约5wt%的着色剂。
3.权利要求2的存储介质,其中,基材包括不大于1wt%的着色剂。
4.权利要求3的存储介质,其中,基材包括不大于0.5wt%的着色剂。
5.权利要求1的存储介质,其中,透射率为70%-85%。
6.权利要求5的存储介质,其中,透射率为75%-80%。
7.权利要求5的存储介质,其中,透射率为75%-85%。
8.权利要求1的存储介质,其中,基材还包括视觉材料,选自玻璃、金属、二氧化钛、云母、角度位变异构材料,以及包含至少一种上述视觉材料的组合。
9.权利要求8的存储介质,其中,视觉材料具有一种几何形状,选自碎片、颗粒以及包含至少一种上述几何形状的组合。
10.权利要求8的存储介质,其中,视觉材料以碎片形式存在。
11.权利要求1的存储介质,其中,着色剂还包括一种荧光材料,其荧光彩色发射波长不等于读回激光波长。
12.权利要求11的存储介质,其中,荧光彩色发射波长与读回激光波长至少相差约±10nm。
13.权利要求12的存储介质,其中,荧光彩色发射波长与读回激光波长至少相差约±20nm。
14.权利要求1的存储介质,其中,塑料选自热塑性和热固性塑料。
15.权利要求14的存储介质,其中,热塑性塑料选自:聚氯乙烯、聚烯烃、聚酯、聚酰胺、聚砜、聚酰亚胺、聚醚酰亚胺、聚醚砜、聚苯硫醚、聚醚酮、聚醚醚酮、ABS树脂、聚苯乙烯、聚丁二烯、聚丙烯酸酯、聚丙烯腈、聚缩醛、聚碳酸酯、聚苯醚、乙烯-乙酸乙烯酯共聚物、聚乙酸乙烯酯、液晶聚合物、乙烯-四氟乙烯共聚物、芳香族聚酯、聚氟乙烯、聚偏氟乙烯、聚偏氯乙烯、特氟隆、以及包含至少一种上述热塑性塑料的共混物、共聚物、混合物、反应产物和复合物。
16.权利要求15的存储介质,其中,热塑性塑料选自:聚乙烯、氯化聚乙烯、聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚对苯二甲酸环己基亚甲基酯、氢化聚砜、氢化聚苯乙烯、间规和无规聚苯乙烯、聚环己基乙烯、苯乙烯-丙烯腈共聚物、苯乙烯-马来酸酐共聚物、聚甲基丙烯酸甲酯、甲基丙烯酸甲酯-聚酰亚胺共聚物、以及包含至少一种上述热塑性塑料的共混物、共聚物、混合物、反应产物和复合物。
17.权利要求15的存储介质,其中,聚碳酸酯包括分子式(I)的结构单元:
Figure A018166140003C1
其中,R1基团总数的至少60%为芳香族有机基团,其余的为脂肪族、脂环族或芳香族基团。
18.权利要求15的存储介质,其中,聚碳酸酯是由具有如下通式(III)的二羟基化合物的界面反应制成的,
Figure A018166140003C2
其中,Ra和Rb分别独立地代表卤素原子或一价烃基;p和q分别独立地为从0-4的整数;Xa代表下式(IV)基团之一,
其中,Rc和Rd分别独立地代表氢原子或一价线形或环状烃基,Re是二价烃基。
19.权利要求14的存储介质,其中,热固性塑料选自:环氧树脂、酚醛树脂、醇酸树脂、聚酯、聚酰亚胺、聚氨酯、矿物填充硅氧烷树脂、二马来酰亚胺、氰酸酯、乙烯基树脂、苯并环丁烯树脂、以及包含至少一种上述热固性塑料的共混物、共聚物、混合物、反应产物和复合物。
20.一种彩色数据存储介质,包括:
包含一种荧光着色剂和塑料的基材,其中该基材的荧光彩色发射波长不等于读回激光波长。
21.权利要求20的存储介质,其中,荧光彩色发射波长与读回激光波长至少相差约±10nm。
22.权利要求21的存储介质,其中,荧光彩色发射波长与读回激光波长至少相差约±15nm。
23.权利要求22的存储介质,其中,荧光彩色发射波长与读回激光波长至少相差约±20nm。
24.权利要求20的存储介质,其中,塑料选自热塑性和热固性塑料。
25.权利要求24的存储介质,其中,热塑性塑料选自:聚氯乙烯、聚烯烃、聚酯、聚酰胺、聚砜、聚酰亚胺、聚醚酰亚胺、聚醚砜、聚苯硫醚、聚醚酮、聚醚醚酮、ABS树脂、聚苯乙烯、聚丁二烯、聚丙烯酸酯、聚丙烯腈、聚缩醛、聚碳酸酯、聚苯醚、乙烯-乙酸乙烯酯共聚物、聚乙酸乙烯酯、液晶聚合物、乙烯-四氟乙烯共聚物、芳香族聚酯、聚氟乙烯、聚偏氟乙烯、聚偏氯乙烯、特氟隆、以及包含至少一种上述热塑性塑料的共混物、共聚物、混合物、反应产物和复合物。
26.权利要求25的存储介质,其中,热塑性塑料选自:聚乙烯、氯化聚乙烯、聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚对苯二甲酸环己基亚甲基酯、氢化聚砜、氢化聚苯乙烯、间规和无规聚苯乙烯、聚环己基乙烯、苯乙烯-丙烯腈共聚物、苯乙烯-马来酸酐共聚物、聚甲基丙烯酸甲酯、甲基丙烯酸甲酯-聚酰亚胺共聚物、以及包含至少一种上述热塑性塑料的共混物、共聚物、混合物、反应产物和复合物。
27.权利要求25的存储介质,其中,聚碳酸酯包括分子式(I)的结构单元:
Figure A018166140005C1
其中,R1基团总数的至少60%为芳香族有机基团,其余的为脂肪族、脂环族或芳香族基团。
28.权利要求27的存储介质,其中,聚碳酸酯是由具有如下通式(III)的二羟基化合物的界面反应制成的,
Figure A018166140005C2
其中,Ra和Rb分别独立地代表卤素原子或一价烃基;p和q分别独立地为从0-4的整数;Xa代表下式(IV)基团之一,
其中,Rc和Rd分别独立地代表氢原子或一价线形或环状烃基,Re是二价烃基。
29.权利要求24的存储介质,其中,热固性塑料选自:环氧树脂、酚醛树脂、醇酸树脂、聚酯、聚酰亚胺、聚氨酯、矿物填充硅氧烷树脂、二马来酰亚胺、氰酸酯、乙烯基树脂、苯并环丁烯树脂、以及包含至少一种上述热固性塑料的共混物、共聚物、混合物、反应产物和复合物。
30.权利要求20的存储介质,还包括紧邻基材放置的层,其中,该层选自:保护层、介电层、数据存储层、反射层,以及包含至少上述一种层的组合层。
31.权利要求20的存储介质,其中,当读回激光穿过1.2mm厚的彩色基材(盘)时,在读回激光的波长处,此基材具有大于约68%的透射率。
32.权利要求31的存储介质,其中,该基材具有70%-90%的透射率。
33.权利要求32的存储介质,其中,该基材具有70%-85%的透射率。
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US20030152774A1 (en) 2003-08-14
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