Printing is a process technology that uses a printing plate or other methods to transfer graphic information on a manuscript to a substrate, and uses an analog or digital image carrier to transfer the coloring agent/colorant to the substrate.

Printing is a technology for copying the graphic information of the original manuscript. Its biggest feature is that it can reproduce the graphic information on the original manuscript in a large amount and economically on a variety of substrates. It can be said that the finished product can be Extensive circulation and permanent preservation are incomparable to other copying technologies such as movies, television, and photography.