有色棉底布电脑测配色套色

对电脑测配色公式进行推导，建立适合有色棉底布套色的基础数据库。染料总用量相同，采用单一染料分别对空白棉织物单次和两次进行染色，结果显示分次染色后棉织物的K/S值低于单次染色。根据该现象，对现有的套色功能提出质疑。分别建立以空白棉织物和有色棉织物为底布的基础数据库并对数据库的套色准确性进行测试，结果显示直接采用有色棉织物为底布建立基础数据库获得的各染料单位浓度的K/S值应用于有色棉织物套色更符合套色的染色过程，降低了套色次数，减少了套色时间。本文根据实际情况对电脑测配色理论进行了一定程度的拓展，并为采用电脑测配色对有色棉织物修色提供了一条新的途径。

Computer color measuring and matching and overdyeing of colored cotton fabric

Since the existing computer color measuring and matching and overdyeing for colored cotton fabric are confronted with such problems as many times of overdyeing and long time consumption,the overdyeing methods based on the available color measuring and matching instruments were analyzed in order to establish a new color measuring and matching method for overdyeing of colored cotton fabric.The blank cotton fabrics were dyed with single dye by once and twice separately to stimulate the dyeing process of colored cotton fabric,and their total amount of dye was identical.The results showed that the K/S value of the cotton fabric dyed by twice was lower than that by once.Basic databases of the blank cotton fabrics and the colored cotton substrates were established,respectively,and the accuracy of these databases was tested.The results showed that the accuracy of latter was higher than that of the former.The color difference value was smaller than 1 after twice shading.It provides a new method for overdyeing of colored cotton fabric when using computer color measuring and matching.