CN100393532C - Cd/dvd标记中使用的黑色无色染料 - Google Patents
Cd/dvd标记中使用的黑色无色染料 Download PDFInfo
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- CN100393532C CN100393532C CNB2004800027403A CN200480002740A CN100393532C CN 100393532 C CN100393532 C CN 100393532C CN B2004800027403 A CNB2004800027403 A CN B2004800027403A CN 200480002740 A CN200480002740 A CN 200480002740A CN 100393532 C CN100393532 C CN 100393532C
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- leuco dye
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
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- B41M5/323—Organic colour formers, e.g. leuco dyes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
- B41M5/465—Infrared radiation-absorbing materials, e.g. dyes, metals, silicates, C black
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
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Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Paints Or Removers (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
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Abstract
描述了使用电磁辐射敏感组合物中的黑色无色染料标记光盘(14)记录介质的系统(10)和方法。将含有异苯并呋喃酮的黑色无色染料制备在包含活化剂、辐射吸收剂、非无色着色剂和/或各种载体的各种组合物中。无色染料组合物可被施加并制备以在黑色无色染料显影时获得所需的视觉效果。
Description
优先权信息
本申请为2003年1月24日提交的美国专利申请序列号10/351188的部分继续申请,本文引入其作为参考。
发明领域
本发明一般涉及无色染料的应用。更特别地,本发明涉及使用黑色无色染料标记基片。
发明背景
光盘占软件数据存储以及摄影、视频和/或音频数据存储市场的相当大比例。典型地,光盘具有嵌入其上并可从盘的一面或两面读取的数据模式,和印刷在盘另一面上的图形显示。盘的数据可读面或数据面包含不定间隔凹陷的螺旋形磁道,称为凹区,被称为平台区的不凹陷表面分开。低功率激光集中到螺旋形磁道上。凹区和平台区之间的高度差异形成反射束中可被测量并转变成有用数据的相移。目前存在各种光盘格式,如CD、CD-ROM、CD-R、CD-RW、DVD、DVD-R和DVD-RW。还存在其它光盘格式。
为了标示光盘内容,印刷图案或图形显示信息可被印刷在盘的非数据面上。图案或图形显示既可为装饰性的,又可提供关于盘数据内容的相关信息。过去,使用丝网印刷方法按常规完成商业标记。尽管这种方法可提供各式各样的标签内容,但对于少于约400个盘的生产,往往成本效率低,因为与制备模板或模板组合和印刷所需图案或图形显示有关的成本是固定的。
近年来,消费者使用数据存储光盘的显著增多增加了对提供反映光盘内容的定制标签的需求。大多数消费者可用的标记方法局限于手写描述或可贴到盘上的预先印好的标签,但当高速旋转时也可能反面影响盘性能。
发明概述
已认识到开发用于标记基片如光盘的替代系统和方法将是有利的。
在一种实施方案中,根据本发明实施方案的光盘可包括其上涂有电磁辐射敏感组合物的光盘基片。电磁辐射敏感组合物可包含显影时能形成黑色图象的无色染料,其中无色染料为含有异苯并呋喃酮的染料。电磁辐射敏感组合物还可包含设计用于与无色染料反应的活化剂。电磁辐射敏感组合物还可包含与无色染料混合或热接触的电磁辐射吸收剂,其在足以有助于反应的电磁辐射的影响下为热活化的。
本发明还包括标记基片的系统,该系统包括图象数据源、其上涂有电磁辐射敏感组合物的基片和用于显影电磁辐射敏感组合物的辐射源。电磁辐射敏感组合物可包含显影时能形成黑色图象的无色染料,如含有异苯并呋喃酮的染料。另外,组合物可包含设计用于与无色染料反应的活化剂和与无色染料混合或与无色染料热接触的电磁辐射吸收剂,吸收剂在足以有助于反应的电磁辐射的影响下为热活化的。电磁辐射源可有效地连接到图象数据源上,并设计直接电磁辐射到电磁辐射敏感组合物上。
在另一实施方案中,标记光盘的方法可包括一系列步骤。第一个步骤包括施加电磁辐射敏感组合物到光盘的表面上,其中组合物包含黑色无色染料、活化剂和电磁辐射吸收剂,无色染料为含有异苯并呋喃酮的染料。第二个步骤可包括从数据源转移图象数据到设计用于产生电磁辐射的电磁辐射源上。第三个步骤可包括通过暴露于一定频率、强度、时间和光点直径的电磁辐射诱导至少一部分电磁辐射敏感组合物变色以在光盘上产生可见图象。
本发明的其它特征和优点将在下面结合附图的详细描述中显而易见,附图共同说明例如本发明的特征。
详细描述
现在将参考附图中图示的典型实施方案,本文中将使用专用语言描述相同的东西。然而应理解,并不因此限制本发明的范围。本文所述发明特征的替换和更多变更,和本文所述发明原理的更多应用是相关领域并拥有该公开的技术人员能够想到的,都被认为在本发明的范围内。另外,在公开和描述本发明的具体实施方案前,应理解本发明不限于本文公开的具体过程和材料,同样可在一定程度上变化。还应理解,本文使用的术语用于只描述具体实施方案的目的,而不用于限制,因为本发明的范围将只由附加的权利要求和其等同原则限定。
在描述和要求本发明时,将使用下面的术语。
单数形式“a”、“an”和“the”包括复数对象,除非文中另外清楚指明。因此,例如,提及“无色染料”包括提及一种或多种这类材料。
本文使用的“光盘”意指包括在CD和/或DVD驱动器中机器可读的音频、视频、多媒体和/或软件盘等。光盘格式的例子包括可写、可记录和可再写盘,如DVD、DVD-R、DVD-RW、DVD+R、DVD+RW、CD、CD-ROM、CD-R、CD-RW等。还可包括其它类似格式,如相似格式和未来发展的格式。
本文使用的“图形显示”可包括光盘上存在的任何可见字符或图象。典型地,图形显示显著存在于光盘的一面上,尽管不总是这样。
本文使用的“数据”一般相对于本公开使用,包括光盘上包含的为数字形式或以其它方式嵌入其中的非图形信息。数据可包括音频信息、视频信息、摄影信息、软件信息等。
本文使用的“含有异苯并呋喃酮”是指适用于本发明并包括下面亚基的任何化学化合物:
本文使用的“无色染料”是指这样形式的染料,即在显影前基本上无色或白色并在暴露于热时变黑。变色现象一般由于化学变化引起,如通过因热暴露导致的氧化。
术语“活化剂”是指在引入热时与无色染料相互作用或反应的组合物。
本文使用的“显影”是指无色染料与另外的试剂如活化剂相互作用或反应产生具有所需颜色的可见组合物。相互作用最经常是热引发的,但也可为性质上自然的。
本文使用的“吸收剂”通常是指在暴露于预定频率的电磁辐射时可产生热的电磁辐射敏感剂。预定频率可从一种吸收剂组合物到下一个为不同的。当与无色染料和/或活化剂混合或热接触时,可存在足够数量的吸收剂以便产生足够的热以至少部分显影根据本发明实施方案的无色染料。典型地,无色染料的显影可由无色染料和活化剂组合物之间的相互作用引起。
术语“热接触”是指吸收剂和无色染料-活化剂组合物的空间关系。例如,当吸收剂被电磁辐射的相互作用加热时,吸收剂产生的热应足以使无色染料通过与活化剂的反应变黑。热接触可包括吸收剂和无色染料之间的密切靠近,这允许热从吸收剂向着无色染料和/或活化剂传递。热还可包括吸收剂和无色染料之间的实际接触,如在直接靠近的层中,或在包括两种成分的混合物中。
定义“载体”或“载体组分”包括可与无色染料、吸收剂和/或活化剂一起使用形成基片表面上一个或多个层的组合物和添加剂。表面活性剂、聚合物、UV可固化材料等可用作载体。无色染料和吸收剂的组合物可在常用载体内,或可在分开的载体内被顺序地施加到基片上。在一些实施方案中,可向载体中加入添加剂,如着色剂。
本文使用的“光学密度”是指反射率倒数的对数,其中反射率是反射功率对入射功率的比。
浓度、数量和其它数值数据在本文中可用范围格式提供。应理解使用这种范围格式仅仅为了方便和简洁,并应灵活地解释为不仅包括作为范围界限显引用的数值,而且包括该范围内所涵盖的所有单独数值或子区间,就象每个数值和子区间都显引用一样。例如,约1μm-约200μm的尺寸范围应被解释为不仅包括显引用的浓度界限1μm-约200μm,而且包括单独浓度如2μm、3μm、4μm,和子区间如10μm-50μm、20μm-100μm等。
在根据本发明的用于标记其上具有黑色无色染料的基片的系统中,系统可同时写到光盘的图象面上,和收集和/或写数据到光盘的数据面上。光盘基片显示在第一个方向上,图象面方向向上。电机和支撑构件存在用于旋转和支撑光盘。
根据本发明,图象被数字化地存储在图象数据源上。可使用大量市售图象软件程序产生图象信息。然后图象通过信号处理器被光栅化或螺旋化并输送到标记电磁辐射源。该过程一般涉及将图象数据数字化到对应于螺旋形路径,该螺旋形路径与旋转时电磁辐射源相对于光盘图象面所沿的路径匹配。在一种实施方案中,标记电磁辐射源为发射装置,和任选的与其上具有无色染料组合物的旋转光盘的图象面相对的标记检测装置。另外,任选的第二发射装置和第二检测装置面向数据面并被设计用于同时读和/或写操作。可在数据源中产生、使用和/或存储数据。在一种实施方案中,可通过将数据经由信号处理器送到第二发射装置来写数据。每组发射器和检测器分别位于第一滑轨(sled)a和第二滑轨上。另外,第一滑轨和第二滑轨分别沿着第一轨道和第二轨道。在这种实施方案中,示出单个螺线管,其用于同时使第一滑轨和第二滑轨两者行进并一致地收集信息。但是,这是不需要的。
在另一实施方案中,每个滑轨可被设计成彼此独立。在这种实施方案中,可实现两个螺线管或其它机械或电结构的使用用于独立功能。另外,其它实施方案也是可以的,如使用单个轨道和螺线管组合,如在常用CD-R/CD-RW驱动器中存在的那些。可使用相同的发射器和二极管组合读取和写数据,然后翻转盘,使用本发明的无色染料显影黑色图象。
本发明一般涉及使用特定的黑色无色染料标记基片。通常用表示的光盘包括具有各种涂层的基片。基片通常用于结构支撑,并具有数据面和标签面。基片可用任何合适的材料如光盘用聚碳酸酯或其它聚合材料制成。数据层通常通过溅射或其它已知方法形成,并可包含任何已知的能形成、保持和/或模仿对应于具体数据的凹区和平台区的材料。因此,尽管示出了单个数据层,但应理解可使用多个层,如对于可写和/或可再写格式。至于这类用于形成永久(ROM)、可写或可再写格式的材料,对本领域的那些技术人员来说是众所周知的。这些材料包括但不限于铝、花青、酞菁、金属化偶氮染料和染料层聚合物粘合剂中的光敏化合物。例如,可再写光盘一般包括在无定形和结晶状态中表现出不同反射性质的四相变合金。数据层还可包含不影响数据层数据存储性能的着色剂。对于光盘的数据面,上述组合物是可读或可写的。
可制备本发明的黑色无色染料和活化剂并以各种方式施加到数据可读或可写光盘上。例如,可制备包含黑色无色染料、活化剂、电磁辐射吸收剂和载体的电磁辐射敏感组合物。载体可包括表面活性剂和/或聚合材料如、单体的聚丙烯酸酯和低聚物、聚乙烯醇、纤维素酯、聚乙烯吡咯烷、聚乙烯、多酚或多酚酯、聚氨酯等。由于所示实施方案的电磁辐射敏感组合物不仅提供无色染料和活化剂功能,而且还用于保护盘的顶面,因此还可加入各种辅助组分如润滑剂、表面活性剂和提供耐湿性的材料,从而为电磁辐射敏感组合物提供机械保护。
在另一实施方案中,电磁辐射吸收剂可施加在相对于无色染料层的独立层中,其中独立层在无色染料前或后配置在基片上。在合适载体中可包含黑色无色染料和活化剂的无色染料层。该组合物形成在数据层上,并可覆盖光盘的整个表面或仅仅一部分。吸收剂层可形成为独立层(在载体中使用吸收剂),其覆盖光盘的至少一部分。因此,无色染料层和吸收剂层共同构成电磁辐射敏感组合物。在一种实施方案中,为了按照需要在光盘表面上显影无色染料组合物,吸收剂层可在光盘上与无色染料层至少大致相同的部分上形成。这提供了吸收剂层与无色染料层热接触的光盘。如果两个层不实际接触,但靠得足够近到能发生无色染料的热激活,则层也可被认为是热接触的。可形成任选的被动保护层以增加对无色染料层和吸收剂层的机械保护。保护层可为基本上透明的或半透明的,以便使充分的电磁辐射从其中通过,允许电磁辐射敏感组合物的显影。
在本发明的又一实施方案中,描述了具有基片、数据层和第一保护层的光盘。可制备包括无色染料、活化剂、电磁辐射吸收剂和载体的电磁辐射敏感组合物层,如上所述,使吸收剂和无色染料与活化剂在独立的层中或混合到一起。第一保护涂层保护数据层,这对于目前市售的可写和可再写光盘是典型的。第二保护涂层保护电磁辐射敏感组合物层。可涂敷包括漆、UV涂料或聚合薄膜的这类保护涂层。
对于图中列举出的每个实施方案,以及对于等价实施方案,适用于本发明的黑色无色染料为含有异苯并呋喃酮的染料。通常,无色染料基本上无色,并为内酯闭环形式。这类染料可为无色荧烷染料,如3-二-正戊基氨基-6-甲基-7-苯胺荧烷、3-二-正丁基氨基-6-甲基-7-苯胺荧烷、3-(正乙基正异戊基氨基)-6-甲基-7-苯胺荧烷和3-吡咯烷-6-甲基-7-苯胺荧烷。相应的化学结构分别如下所示:
本发明中还可使用包含卤化物的无色染料如卤代异苯并呋喃酮无色染料。包含卤化物的异苯并呋喃酮无色染料的一个例子是四卤代组合物1(3H)-异苯并呋喃酮、4,5,6,7-四氯-3,3-双[2-[4-(二甲基氨基)苯基]-2-(4-甲氧基苯基)乙烯基],其具有下面的结构:
当热诱导氧化、质子化、开环等时,在活化剂存在下,上述含有异苯并呋喃酮的无色染料可形成具有高光学密度的黑色染料。尽管宽范围的组合物适用于本发明,但电磁辐射敏感组合物可包含少于约60wt%的无色染料和活化剂,并优选约40wt%。这些范围只是示例性的,根据所需的图象特点和其它考虑因素,可使用其它重量范围。在约1∶4和4∶1之间的活化剂对无色染料重量比一般能提供足够的结果,并还可使用约2∶1的比例。
如上所述,无色染料和活化剂之间的相互作用可导致无色染料中的化学变化,从而改变无色染料的颜色从基本白色或无色到基本黑色。通常,无色染料中的化学变化在施加一定量的热时发生。适用于本发明的活化剂可由本领域的那些技术人员选择。合适活化剂的几个非限制性例子包括酚、羧酸、路易斯酸、草酸盐络合物、琥珀酸、硬脂酸锌和它们的组合。
当由电磁辐射吸收剂提供一定量的热时,可进行电磁辐射频率和强度与所用吸收剂的匹配以优化系统。电磁敏感无色染料组合物中吸收剂的存在量一般在约0.001wt%和约10wt%之间,但可根据具体吸收剂的活性要求其它重量范围。可选择的频率的例子包括红外、可见、紫外或它们的组合。
吸收剂可被设计与含有异苯并呋喃酮的无色染料导热关联。例如,吸收剂可作为混合物的一部分放在与含有异苯并呋喃酮的无色染料相同的层中,或可在独立的层中。因此,吸收剂可与无色染料组合物混合或热接触。在本发明的一个方面中,可在施加无色染料组合物作为一个层前或后,将吸收剂施加到基片独立的邻近层中。在一种实施方案中,也可考虑选择活化剂使得任何在可见范围内被吸收的光不反面影响图形显示或未显影无色染料的外观。尽管可使用无机化合物,但吸收剂一般为有机化合物,如但不限于红外吸收剂、紫外吸收剂和可见光吸收剂。更具体地说,适用于本发明的吸收剂的例子包括但不限于金属络合物IR染料、靛蓝花青绿、杂环化合物和它们的组合。可使用金属络合物IR染料,如具有下面通式的二噻茂烷金属络合物:
其中M可为过渡金属,R1-R4可为低级烷基或芳基。靛苯胺金属络合物也是合适的,如下面的化合物:
其中M可为Ni、Cu或另外的过渡金属,每个R可独立地为H、低级烷基和/或芳基。本发明中还可使用分别如下面所示的几种商业IR吸收剂化合物,如IR780和IR783(从Aldrich Chemical Company得到)和二硫代苯基亚甲基化合物(Syntec 9/1和Syntec 9/3)。
本发明中还可使用其它合适的吸收剂,并为本领域那些技术人员所知,可在这样的文献中找到,如“Infrared Absorbing Dyes”,Matsuoka,Masaru,ed.,Plenum Press,New York,1990(ISBN0-306-43478-4)和“Near-Infrared Dyes for High TechnologyApplications”,Daehne,Resch-Genger,Wolfbeis,Kluwer AcademicPubishers(ISBN 0-7923-5101-0),本文引入两者作为参考。但是,本文讨论的具体活化剂和吸收剂为分开的化合物,这种活性也可由在无色染料分子内结合活化和/或辐射吸收作用的无色染料的成分组提供。
根据本发明的另一方面,黑色异苯并呋喃酮无色染料可在暴露于特定类型电磁辐射的条件下被显影,包括使用激光器产生的电磁辐射。可得到能产生可见、红外和紫外频率辐射的激光器。例如,频率在约650nm到约815nm之间的激光器可容易地从市场上得到。
可改变显影本发明无色染料的条件。例如,可改变电磁辐射频率、热流量和暴露时间。变量如光点直径和激光功率也影响任何具体的系统设计,并可根据所需的结果选择。利用这些变量,依照图象数据源和从信号处理器接受的信息,电磁辐射源可引导电磁辐射到电磁辐射敏感组合物上。另外,还可改变无色染料和/或活化剂浓度和彼此的接近度。
可使用功率消耗为15-100mW的激光器显影本发明的无色染料,但也可使用功率在这个范围之外的激光器。通过考虑电磁辐射源确定光点直径,并可在约1到约200μm的范围内,但也可使用更小或更大的尺寸。在一种实施方案中,还可利用在约10和约60μm之间的辐射光点直径。在又一方面,20×50μm的光点直径可在分辨率和显影速度之间提供良好的平衡。
热流量是也可以改变的变量,并在一种实施方案中为约0.05-1J/cm2,在第二种实施方案中为约0.05-0.4J/cm2。这些范围内的热流量使无色染料的显影在一些实施方案中小于约1000微秒/点,在另外一些实施方案中小于约500微秒/点,在还一些实施方案中为100微秒/点或更少。
为了说明这些变量可集合在单个实施方案中的例子,可使用20乘50μm的光点直径、35mW的激光器和100微秒暴露/点在约20分钟内显影包含无色染料组合物和活化剂的标准CD图象表面。按照这种实施方案产生的黑色图象可具有超过约1.3的高光学密度。通常还可获得约1.4或更大的光学密度。本领域的那些技术人员可调整这些变量以获得各种分辨率和显影时间。
还可实施其它变化,包括添加非无色着色剂以为图象提供另外的所需颜色。例如,可使用遮光剂颜料或其它非无色着色剂为光盘提供底色。非无色着色剂可被加入到电磁辐射敏感组合物层(其可包括活化剂层和无色染料层,或可为两种层在单个层中的混合物)或保护层中,只要无色染料的显影不受反面影响即可。然后可显影黑色无色染料部分产生具有彩色背景的黑色图象。遮光剂的例子包括碳酸钙、二氧化钛和其它已知的遮光剂。另外,其它非无色着色剂的例子包括染料或其它颜料。换句话说,如果需要保持独立于无色染料显影的彩色背景,则可在载体中混合遮光剂颜料、其它颜料和/或染料以提供所需的颜色。
在制备形成黑色的无色染料时,这类染料可在基本上透明或半透明的溶液中制备。可使用任何与选择的特定黑色无色染料相容的合适载体,如表面活性剂。当黑色无色染料被制备成溶液形式时,可能需要在无色染料溶液下方的至少一部分基片上印彩色涂层。任选的彩色涂层产生在溶液层下方可见的底色。这种彩色涂层可包含各种非无色着色剂如其它颜料和/或染料。或者,可将非无色着色剂加入到数据层中以产生所需的底色。如同分散一样,可在溶液被涂到其上前或后在溶液内混合活化剂或将活化剂涂到基片上。如果底色被预先印好,则这类涂料和组合物可使用各种已知技术中的任何一种施加到基片上,如丝网印刷、旋涂、溅射或喷涂。可施加每个涂层,然后依次干燥。
实施例
实施例1
将约5g磨碎的包含0.05%IR783活化剂粉末的苯甲酸-4-苄氧酯溶解在丙烯酸酯单体和低聚物的15.3g紫外可固化混合物(以商标名NOR-COTE CDG000UV-漆得到)中形成溶液。然后,向溶液中加入14.5g2’-苯胺-3’-甲基-6’-(二丁基氨基)荧烷(可从Nagase Co.,Ltd.得到的BK-400无色染料),其具有下面的结构:
并具有小于约5μm的平均粒度。作为活化剂,向溶液中加入平均粒度小于约5μm的1.9g纯双酚-A。使溶液变为细糊料并丝网印刷到基片上形成成象介质,厚度为大约7μm。然后使用汞灯的紫外辐射固化介质上的涂层。
用45mW激光器在780nm处显影产生的含有无色染料的层。利用约20微秒-100微秒的暴露时间产生大约20μm×45μm的标记。没有使用中间印刷就产生了显影的图象,并表现出高光学密度。
实施例2
加热约2g草酸二苄酯粉末到足以使粉末融化的约85℃。向融化的粉末中加入20g具有下面结构的苯酚4,4’-磺酰基双(2-(2-丙烯基))活化剂(以商标名TG-SA得到)和1.2g IR吸收剂IR780。
冷却得到的组合物,并研磨成细粉。然后,将1.8g磨碎的细粉溶解在15.3g作为载体的NOR-COTE CDG000UV-漆中形成溶液。然后,向溶液中加入15g可从Nagase Co.,Ltd.得到的商标名为S-205的黑色无色染料((2-苯胺-3-甲基-6-(N-乙基-N-异戊基氨基)氟),其具有下面的结构:
黑色无色染料具有小于约5μm的平均粒度。另外,向溶液中加入平均粒度小于约5μm的2.0g纯双酚-A形成混合物。使混合物变为细糊料并丝网印刷到基片上形成成象介质,厚度为大约7μm。然后使用汞灯的紫外辐射固化介质上的涂层。
然后在得到的有涂层的基片上用45mW激光器在780nm处显影无色染料。利用约60微秒-100微秒的暴露时间产生大约20μm×45μm的标记。没有使用中间印刷就产生了显影的图象,并提供具有高光学密度的图象。
实施例3
使去离子水中的靛蓝花青绿(1.5g 10%的溶液)与50g SavoirFaire,Novato,CA以商标名LASCAUX出售的丝网印刷糊料充分混合形成糊料混合物。使大约一半的糊料混合物与17g粉碎的黑色无色染料(同实施例2中的S205)混合。无色染料已被预先在水浆中粉碎至平均粒度小于约5μm,并干燥至大约50%固体。然后在辗轮式混砂机上充分混合糊料混合物和无色染料。然后将剩余部分的糊料混合物与33g4-羟基苯甲酸苄酯结合并充分混合。通过粉碎颗粒至平均粒度小于约11μm并干燥至大约50%固体来制备4-羟基苯甲酸苄酯。然后辗压得到的混合物以充分使组分均匀化并降低平均颗粒直径。得到的混合物测得平均细度小于2μm。还测得混合物的粘度在1rpm时在50000和160000cps之间,其中10rpm/1rpm的曲线斜率大于5.0。将混合物丝网涂敷到CD的一面上并在45℃下在真空中干燥。
然后使用45mW激光器在780nm处显影CD基片上无色染料280微秒暴露时间。印刷在CD上的图象显示出尺寸大约20×50微米的高光学密度黑色标记,并具有绿色背景。
应认识到上面参考的布置是说明本发明原理的应用。尽管结合本发明的示例性实施方案在图中显示并在上文中描述了本发明,但在不脱离本发明精神和范围的情况下,可设计大量变更和替代布置。显然,对于本领域那些普通技术人员,只要不脱离如权利要求所提出的本发明的原理和概念,就可进行大量变更。
Claims (10)
1.一种光盘,包括其上涂有电磁辐射敏感组合物的光盘基片,所述电磁辐射敏感组合物包含:
a)显影时能形成黑色图象的无色染料,所述无色染料为含有异苯并呋喃酮的染料;
b)设计用于与无色染料反应的活化剂;和
c)与无色染料混合或热接触的电磁辐射吸收剂,其在足以有助于反应的电磁辐射的影响下为热活化的。
2.如权利要求1的光盘,其中吸收剂与无色染料混合,所述吸收剂在电磁辐射影响下为热活化的。
3.如权利要求1的光盘,其中电磁辐射吸收剂包含在第一层中,并且其中无色染料和活化剂包含在第二层中,所述第二层相对于第一层设计,从而在被电磁辐射活化时吸收剂与无色染料热接触。
4.如权利要求1的光盘,其中电磁辐射为激光形式。
5.如权利要求1的光盘,其中电磁辐射敏感组合物还包含非无色着色剂。
6.一种标记光盘的方法,包括以下步骤:
a)施加电磁辐射敏感组合物到光盘的表面上;其中组合物包含黑色无色染料、活化剂和电磁辐射吸收剂,所述无色染料为含有异苯并呋喃酮的染料;
b)从数据源转移图象数据到设计用于产生电磁辐射的电磁辐射源上;和
c)通过暴露于一定频率、强度、时间和光点直径的电磁辐射诱导至少一部分电磁辐射敏感组合物变色以在光盘上产生可见图象。
7.如权利要求6的标记光盘的方法,其中电磁辐射敏感组合物由包括含无色染料层和含吸收剂层的邻近层形成。
8.如权利要求6的标记光盘的方法,其中转移图象数据的步骤还包括将数据数字化到对应于螺旋形路径,该螺旋形路径与旋转时电磁辐射源相对于光盘顶面所沿的路径匹配。
9.如权利要求6的标记光盘的方法,其中电磁辐射敏感组合物还包含非无色着色剂。
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TWI307713B (en) | 2009-03-21 |
TW200413476A (en) | 2004-08-01 |
MY136847A (en) | 2008-11-28 |
US20040146812A1 (en) | 2004-07-29 |
US7270865B2 (en) | 2007-09-18 |
US6974661B2 (en) | 2005-12-13 |
ZA200505404B (en) | 2006-06-28 |
TW200413512A (en) | 2004-08-01 |
CN1741910A (zh) | 2006-03-01 |
TWI316076B (en) | 2009-10-21 |
WO2004067653A2 (en) | 2004-08-12 |
US20040147399A1 (en) | 2004-07-29 |
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