Mechanical separation Copy prepared by the designer with overlays showing each colour to be printed: one overlay for each colour, all overlays in exact register with the base mechanical.

• 手工分色稿由设计师準备的原稿,它用盖面纸指示各个印刷顏色:即每色一张盖面纸,各盖面纸的位置与主拼贴对正套准。