Ronghua printing machines are generally composed of plate mounting, inking, stamping, paper feeding and other mechanisms. When it works, the characters and images to be printed are made into a printing plate, which is installed on a printing machine, and then ink is applied to the places with characters and images on the printing plate manually or by a printing machine, and then directly or indirectly transferred to paper or other substrates, so as to copy the same printed matter as the printing plate.