Color standard of color printing design

在印刷设计中，油墨三原色是采用不同的比例混合，来获得所要的颜色光谱色调值的。印刷设计在承印物上的三原色油墨的密度正确和平衡与否与印刷设计人员有直接的关系。印刷设计操作人员虽然只能在有限的范围内测量、设置油墨密度，不过这些密度范围可以帮助印刷设计人员获得较大范围的叠印油墨色，不论油墨是否透明，或承印物是否纯白。在印刷设计中我们可以十分方便地在各种相关的出版物上找到这些密度范围：如FIRST和SWOP标准中都有说明。 

In printing design, the three primary colors of ink are mixed in different proportions to obtain the desired spectral color value. The correctness and balance of the three primary colors of printing on the substrate are directly related to the printing designer. Although printing operators can only measure and set ink density within a limited range, these density ranges can help printing designers to obtain a larger range of inks, whether or not the ink is transparent or whether the printed material is pure or not. In print design, we can conveniently find these density ranges in various publications, such as FIRST and SWOP standards. It

印刷设计中根据指导说明上的油墨密度范围可以用于任何油墨叠印顺序，即YMC、YCM、CMY、CYM、MCY或MYC。但是印刷设计上是否每一种顺序都产生同一种颜色呢?其实不是。