How to print color block prints?

Gravure printing, contrary to relief, is to carve concave lines on the plane of the plate. When the ink rolls, the image of black and white lines can be printed. Polished metal plates do not absorb ink. The ink in copperplate prints can be gently wiped with a cloth, but if the layout is scratched, the ink will stay there. Modern gravure printing plates are mainly copper and zinc, and sometimes iron or steel. The carving method is as follows: color matching method: on several copper plates with the same size, several color separation plates are made by flying dust corrosion method. The printmaker decided to print the color swatch first, and then the color swatch. When printing plates on the machine, first put a thick paper under the copper plate and stick this paper on the machine. Carefully take out the copper plate after printing and leave the paper pad on the machine. At this time, you can clearly see the traces left by the first impression on the pad, and then the lustful second set is carefully embedded in this trace. At this time, the edge of the paper printed with 1 time is still pressed under the upper cylinder of the printing machine, and only the part leaving the cylinder can be exposed. Then carefully put down the paper with 1 printed on it, cover it on the second edition, and shake the drum to accurately overprint the second edition. All other versions are the same.