According to the different types of printing plates used, the printing presses can be divided into the following five types of letterpress printing presses. Letterpress printing is a printing method that uses letterpress printing, a letterpress printing machine is a machine that uses letterpress to complete the printing process. Gravure printing press. Gravure printing is a printing method that uses gravure printing. A gravure printing machine is a machine that prints with gravure. Lithographic printing press. Lithographic printing is a printing method that uses lithographic printing. A lithographic press is a machine that uses a lithographic plate to complete the printing process. The lithography mentioned here refers to a printing plate in which the graphic part and the blank part are almost on the same plane, such as a gravure plate. screen printing machine. Screen printing is a type of stencil printing. Stencil printing refers to the printing method in which the graphic part of the printing plate can be leaked to the substrate through the ink. Offset printing presses, such as ink jet printers.