基于相对色度匹配方法的专色误差分析模型

分析了当前印刷生产过程中使用专色出现的一些问题,并对相对和绝对色度匹配方法进行了分析比较,提出了基于相对匹配算法的专色误差分析模型。该模型强调了测色的准确性,通过色差和色域的判断,给出专色的处理方案。如果色差小于6NBS且处于打印范围内,则用四色叠印代替专色。否则,就利用常用油墨配置专色。为了验证该模型的正确性和有效性,研制了专色处理系统,并通过采集的专色数据进行了试验,取得了较好的效果。

The Model of Spot Color Error Analyzing Based on Relative Chroma Matching Method

This paper analyzed some problems in the process of printing, compared relative chrome matching method with absolute one,and presented the model of spot color error analyzing based on relative chroma matching method. The model emphasized color validity,and presented spot color disposal formulae with judging chromatism. If choromatism was less than 6NBS,and the color was in the print range,the spot color was replaced by cyan,yellow or black printing ink,whereas the spot color ink was collocated with printing ink in common use. The spot color disposal system was studied in order to validate the validity of the model. The experiment showed better effect,which has been made with spot color data.