Due to the different substrates, the auxiliary mechanism of the tinplate printing machine is also different from the offset printing machine. Tinplate is insoluble in water and does not adsorb solvents, so printing inks need to be baked at high temperature to cure the solvent volatile conjunctiva. Therefore, an oven is generally required in the printing process device. The entire tinplate printing automatic line is generally more than 50 meters in length, which has the characteristics of precision and hugeness. In addition, the tinplate printing machine is controlled by magnet split and double sheet. The high hardness of the tinplate material also determines that the advanced continuous iron conveying structure cannot be used in the printing process. Offset printing paper.