Second, the major quality control parameters of the printed sheets were measured, such as solid density, printing contrast, grey balance, dot gain and ink trapping. 然后,印刷获得待测印张,测量印张的主要质量控制参数,如实地密度、相对反差、灰平衡、网点扩大以及叠印率等。
First, I designed the printing images and exposed the plate twice during platemaking, so the printed sheets could include AM and FM two kinds of dot. 首先,完成印版的设计,在制版时对印版进行两次曝光,实现同一印版中同时包含调幅和调频两种网点。