To enhance quality of printing and productivity.

A plate cylinder 11 is formed in such a manner as to have a fourfold diameter, and four printing surfaces 28A-28D are provided on a circumferential surface. A rubber cylinder 12 is formed in such a manner as to have a fourfold diameter, and four printing surfaces 33A-33D are provided on a circumferential surface. In the plate cylinder 11, the four printing surfaces 28A-28D are each equipped with four ink devices for supplying ink, and four forme roller attachment/detachment devices. An impression cylinder 13 is formed in such a manner as to have a threefold diameter, and three printing surfaces 2A-2C are provided on a circumferential surface. A cylinder attachment/detachment device for inserting/extracting the rubber cylinder 12 into/from the impression cylinder 13 is provided so that the printing surface of the impression cylinder 13 and that of the rubber cylinder 12 can be brought into selectively opposed contact with one another.