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首页> 外文会议>ISamp;T's NIP18: International Conference on Digital Printing Technologies, Sep 29-Oct 4, 2002, San Diego, California >Visual Comparison of Screening Quality in Digital Printing Systems
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Visual Comparison of Screening Quality in Digital Printing Systems

机译：数字印刷系统中筛选质量的视觉比较

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Best characteristics in resolution fields showed the offset systems. This became clear at the investigations of the motive "Circles" and "Text", whereby in the text fields the NexPress machine was in the leading group too. In the vignettes the conventional printing machines were best, but as in the resolution fields it is only a small gap to the NIP systems. In the images "Patches", "Silver", "Pigeons" and "Textile" got the offset systems with comparable screenings lower ranking then some of the NIP systems. Thus the statement is, that the digital systems do at least print in the images as good as offset systems with same screening, some do better. They partially obtain amazing, nearly halftone like illustrations, which show a detail reproduction, which was not reached by some conventional systems. To the results of the NIP systems should be said, that the NexPress machine convinced in all tests. If the evaluations in survey a got compared with the publication date of the engines, a clear connection can be recognized. As oldest machines Indigo UltraStream and Xeikon stand usually at the end of the rank order, followed by the newer Xerox, and the recently released NexPress. If this trend continues further, it will be interesting how good the new Xerox IGen 3 will be, which is still in the development phase. At this criterion it is disappointing that the new Indigo Platinum in survey b could not convince. Remarkably is the good evaluation of the HP system in survey b. That's a proof of the potential of the InkJet systems, which however still has strong restrictions in speed and substrate choice. Further interesting will be which multi color development will show up, because the screening solution of a more than 4 color system is excitingly. For the master thesis samples from the new Oce 7-Colormachine (CPS 700) were available, but these were not used for the evaluation, because at this time the quality of the print samples where not satisfying and not comparable to the other systems that got evaluated.
机译：分辨率领域的最佳特性是偏移系统。这在动机“ Circles”和“ Text”的调查中变得很明显，在文本字段中，NexPress机器也处于领先地位。在小插曲中，传统印刷机是最好的，但在分辨率领域，与NIP系统只有很小的差距。在“ Patches”，“ Silver”，“ Pigeons”和“ Textile”图像中，胶印系统的可比筛查等级低于某些NIP系统。因此可以说，数字系统至少在图像上的打印效果与具有相同筛选的胶印系统一样好，有些系统效果更好。他们部分获得了惊人的，接近半色调的插图，这些插图显示出细节重现，而某些常规系统却无法做到。对于NIP系统的结果，应该说NexPress机器在所有测试中都说服了。如果将调查中的评估结果与发动机的发布日期进行比较，则可以识别出明确的联系。作为最老的机器，Indigo UltraStream和Xeikon通常排在排名末尾，其次是较新的Xerox和最近发布的NexPress。如果这种趋势继续下去，将很有趣的是，新的Xerox IGen 3仍将处于开发阶段。按照这个标准，令人失望的是，调查b中的新靛蓝铂金无法说服。值得注意的是，对调查b中的HP系统的良好评价。这证明了InkJet系统的潜力，但是InkJet系统在速度和基材选择上仍然有严格的限制。令人感兴趣的是，将显示出多色开发，因为令人兴奋的是超过4种颜色系统的筛选解决方案。对于硕士论文，可以使用新的Oce 7色机（CPS 700）的样本，但是这些样本没有用于评估，因为此时打印样本的质量令人不满意，无法与其他系统媲美。评估。

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