Printing imposition
Printing imposition, also known as CTP imposition, is to assemble small-page documents into a large version for on-machine printing. ① Overprinting. Overlay printing is the front and back printing. Two sets of PS plates are needed. After printing one side, the reverse paper is replaced with another set of PS plates to print the other side. The overlay printing paper only needs one bite. ② reflexive printing. Only one set of PS versions is needed. The front and back sides of t