电脑测色配色在纺织工业中的应用(二)

The Application of Computer-based Colour Measurement and Matching in Textile Industry (Ⅱ)

四、染料批次质量波动及控制方法 染料批次之间,通常不可避免地存在性能参数的离散性,当这种离散性超过一定标准,即成为质量波动。表征同种染料特性质量的参数主要有染料强度偏差和色相偏差。因此,染料质量波动可分为三类:一是色相偏差不大,强度偏差较大;二是强度偏差不大,色相偏差较大;三是色相和强度偏差都较大。对这三类质量波动情况,可采用不同的控制方法。对第一类情况,通过测色计算求得新染料的强度,在配色处方中分别除以每个染料的新强度从而得出新的染料的配色处方,就可在大样校色中投试。对第二类情况,可按原配方用新染料染小样,测试后以原染料的配方处方作试色样,应用配色修正程序计算出修正配方,并依修正配方校大样投试。对第三类情况的处理复杂一些,先通过测色计算求出染料强度,再用已除以新强度的原配色处方,换用新染料染小样。

The foundamentals were dealt with computer-based colour measurement and matching . The emphasis is put on the treatment of nonlinear corelation between K/S value and dye concentration curve ; the improving of the effective preparation of basic data;the controlling of the change of dyestuffs batch;measurement of some particular samples such as transparent sample,extra small sample and fluorescent material as well as the agreement of off shade with vision.