Zero alcohol offset printing system

A zero alcohol offset printing method, comprising the following steps:

• a. Mounting a printing plate onto the outer cylindrical surface of a plate cylinder;
• b. Depositing dampening liquid by a dampening liquid depositing system to the printing plate to form a patterned dampening liquid film, the dampening liquid depositing system comprises a dampening liquid source and several dampening rollers, wherein the several dampening rollers include a distributor roller, which comprises a metal cylinder surrounded by a ceramic layer on its outer surface, thereby omitting the sandblasting layer, and the ceramic layer has texture on its outer surface;
• wherein the content of alcohol or ether in the dampening liquid is zero;
• c. Depositing ink by an ink depositing system to a non-patterned area on the printing plate which is not covered by the patterned dampening liquid film, the ink depositing system comprises an ink source and several inking rollers;
• d. Transforming the pattern on the printing plate to a blanket, and in turn transforming the pattern from the blanket to the printing paper or printing object, to complete printing process.