Machine for printing text and image. The modern printing press is composed of the assembly, the ink, the printing, the printing, the paper transport (including folding) and so on. Its working principle is: first to text and image printing printing plates, installed in the printing machine, and then by hand or press the ink coating on the printing plate on the text and image, and then directly or indirectly transfer to the paper or other substrate (such as textile, leather, plastic, metal plate, wood, glass and ceramics), so as to reproduce the same printing plate. The invention and development of printing machine play an important role in the spread of human civilization and culture.

In the evolution of the printing of one of the four great inventions of ancient china.