【作者】 赵晨飞； 韩卿； 陈永常；

【Author】 ZHAO Chenfei,HAN Qing and CHEN Yongchang The Department of Light Industry and Energy,Shaanxi University of Science and Technology, Xi’an,China

【机构】 陕西科技大学轻工与能源学院；

【摘要】 在数字印刷中,色彩控制是印品质量检测的重点。本文主要研究通过检测印品颜色的光谱反射率,预测出青、品、黄三原色单色油墨的网点百分比,以便对数字印刷机输出油墨量进行控制,最终实现青、品、黄颜色的精准控制。在三色油墨网点百分比的预测模型中,分析各色油墨的光谱反射曲线特征,选择出与各色油墨网点百分比相关性高的高反射率和低反射率,采用归一法进行计算,得出各色油墨的网点面积预测模型。在这些研究的基础上,可分析数字印刷包装盒纸张对油墨的光谱反射率的影响。研究内容对于实现数字印刷包装盒的色彩的高保真再现具有重要意义。更多还原

【Abstract】 Digital printing can print directly the information which will be printed on the package box by digital print machine and internet or computer,which removes the procession of color separation,makeup,plate-making in the traditional printing.The digital print can print any number package box at any time and at any place,which can realize the variable data printing, and which has a price advantage in the short version printing.Therefore,digital printing is a good method for personalized packaging printing.In digital printing,color control is important for print quality detection.In this paper the dot area percentage of cyan,magenta,yellow ink can be predicted by measuring the color’s spectral reflectance in order to control the ink’s amount in digital print and realize the color’s precise control of cyan,magenta,yellow.In the prediction model of three color ink’s dot percentage,the characteristic of spectral reflectance curves for the various color ink is analyzed,and each ink’s high reflectivity and low reflectivity which is high correlation with the dot percentage is chosen and is calculated by normalization method in order to get each ink’s dot area percentage’ prediction model.At last by measuring the paper’s spectral reflectance and the using normalization method,paper’s color can be described,and the effect of paper on monochrome color ink’s dot area percentage can be analyzed.The research has important significance for packing box’s digital printing’s color high-fidelity reproduction.更多还原