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1. 发明授权

US06244181B1 Dry method for preparing a thermal lithographic printing plate precursor 失效
标题翻译：用于制备热平版印刷版前体的干法
公开(公告)号：US06244181B1
公开(公告)日：2001-06-12
申请号：US09345778
申请日：1999-07-01
申请人： Luc Leenders , August Meisters
发明人： Luc Leenders , August Meisters
IPC分类号： B41C110
CPC分类号： B41C1/1066
摘要： A method is provided for preparing a negative working lithographic printing plate precursor by applying a dry powder, containing a light absorbing compound in an amount not less than 50% by weight, on a metal support such as an anodized aluminum plate. The light absorbing compound is preferably carbon, soot or an infrared dye. In one embodiment of the invention, the dry powder may be rubbed in on the surface of the metal support. In another embodiment a layer of soot is applied on the metal support by contacting the surface of the support with a flame. In still another embodiment, a metal support is contacted with a transfer material consisting of a support and a dry layer of a light absorbing compound such as carbon. By applying heat or light, the dry powder is converted into a hydrophobic substance at the printing areas of the plate. The materials obtained by these methods are very suitable for computer-to-plate and computer-to-press applications as they can be processed by applying plain water, ink or fountain solution. Since the dry powder is preferably free from other reactive compounds besides the light absorbing compound, the materials are characterized by an excellent stability.
摘要翻译：提供了一种通过将含有不少于50重量％的光吸收化合物的干燥粉末施加到诸如阳极氧化铝板的金属载体上来制备负性平版印刷版原版的方法。光吸收性化合物优选为碳，烟灰或红外染料。在本发明的一个实施方案中，干粉可以在金属载体的表面上摩擦。在另一个实施例中，通过使支撑体的表面与火焰接触，将一层烟灰施加在金属支撑件上。在另一个实施方案中，金属载体与由支持物和诸如碳的光吸收化合物的干层组成的转移材料接触。通过加热或加热，干粉在印版区域转化为疏水性物质。通过这些方法获得的材料非常适合于计算机对板和计算机到压机的应用，因为它们可以通过应用普通水，墨水或者润版液来处理。由于除了光吸收性化合物之外，干粉末优选不含其它的反应性化合物，所以材料的特征在于优异的稳定性。

2. 发明授权

US06250225B1 Thermal lithographic printing plate precursor with excellent shelf life 失效
标题翻译：热平版印刷版前体具有优良的保质期
公开(公告)号：US06250225B1
公开(公告)日：2001-06-26
申请号：US09339163
申请日：1999-06-24
申请人： Ludo Van Rompuy , August Meisters , Luc Leenders
发明人： Ludo Van Rompuy , August Meisters , Luc Leenders
IPC分类号： B41C110
CPC分类号： B41C1/1033 , B41C1/1008 , B41C1/1016 , B41C2201/02 , B41C2201/14 , B41C2210/04 , B41C2210/08 , B41C2210/22 , B41C2210/24
摘要： A negative working non-ablative lithographic printing plate precursor is provided which includes a metal support such as an anodized aluminum plate and provided thereon a layer or a stack of layers, wherein at least one layer includes a near infrared light absorbing compound which is the main component of the layer(s). As the amount of other reactive compounds besides the near infrared light absorbing compound is less than 20% by weight, excellent-storage stability is obtained. In a highly preferred embodiment the layer or stack of layers is substantially free from the other reactive compounds. The material is very suitable for computer-to-plate and computer-to-press applications as it can be used as a printing master directly after exposure or may be processed by rinsing with plain water.
摘要翻译：提供了一种负面工作的非烧蚀性平版印刷版原版，其包括诸如阳极氧化铝板的金属载体，并在其上设置一层或多层，其中至少一层包括作为主要的近红外光吸收化合物层的一部分。由于除了近红外光吸收性化合物以外的其他反应性化合物的量少于20重量％，因此获得了优异的储存稳定性。在非常优选的实施方案中，层或层的层基本上不含其它反应性化合物。该材料非常适用于计算机对板和计算机到印刷机的应用，因为它可以在曝光后直接用作印刷主机，或者可以用普通的水冲洗加工。

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