【作者】 高虎；

【导师】 骆光林；

【作者基本信息】 西安理工大学 ， 包装工程， 2006， 硕士

【摘要】 本文研究的主要内容是塑料凹印专色油墨的计算机配色数学模型,基于库贝卡-芒克理论和纽介堡方程建立了两个配色模型,并通过实验验证了其有效性,最后得出前者适用于该配色系统,而后者无法满足配色精度要求的结论。本文首先讨论了专色油墨的呈色模型,并分析了影响专色印刷色彩的各种因素,为后文的模型分析和实验验证过程打下了理论基础。然后讨论了专色油墨的配色方法,传统的经验配色法是当前各企业调配专色油墨的主要方法,受人为因素影响多,不能适应现代印刷的需求,有必要研究和发展计算机配色方法。进而介绍了计算机配色的两个数学模型——库贝卡-芒克理论和纽介堡方程,通过对模型的理论分析,选择双常数的库贝卡-芒克理论普遍方程和回归法修正的纽介堡方程作为配色计算的两个不同数学模型,基于它们分别建立了两个计算机配色系统。然后,通过实际配色实验,验证了两个模型的有效性,发现前者配色是成功的,而后者精度较差。最后,根据实验数据和结果,从模型、计算参数和修正方法三个方面,对两个模型进行了对比和分析,解释了前者取得成功,而后者不能满足要求的原因。相信本课题的研究,对今后专色油墨计算机配色系统的进一步研究和开发提供了重要的理论依据和实际操作范例。更多还原

【Abstract】 This paper mainly focuses on the mathematical models of computer color matching spot-color printing ink used in gravure printing plastic film, establishes two color matching models based on Kubelka-Munk theory and Neugebauer equation, and tests their validities through experiments, finally concludes that the former is suitable to the system, but the latter can’t reach the color matching precision.Firstly, this paper discusses the coloring model of spot-color ink, and analyzes all the factors that affect the color of spot-color printing, which is the theoretical basis of analyzing following models, and the exact guidance of following experiment processes. Secondly, discusses the methods for color-matching spot-color ink. Traditional color-matching method depending on experience is used widely in most of printing companies now, but it is affected by too many man-made factors, and can’t reach the requirements of modern printing. So it’s necessary to develop a computer color matching system. Thirdly, introduces two mathematical models of computer color matching, Kubelka-Munk theory and Neugebauer equation. Through analyzing the two models, chooses ordinary Kubelka-Munk equation with two constants and Neugebauer equation modified in regression method as the mathematical models of color-matching calculation, on which based establishes two different computer color matching systems. Fourthly, tests the validity of the models, through practically color matching experiments. It turns out that the former succeeded, but the latter failed. Finally, analyzes the differences between the two models in modeling, calculating parameters and modifying methods based on the results of experiments, which explains the reasons why the former succeeded, but the latter failed. The researches in this paper provide valuable theoretical basis and a practical example for farther research and development on the computer color matching system.更多还原