To cope with a case where sheet sizes of printed matters are different in relation to a printing apparatus for switching type continuous operation in which replacement of machine plates and rubber blankets are performed without stopping a printing machine.

An impression cylinder 21, a plurality of plate cylinders 22 and rubber blanket cylinders 23 each holding jointly the impression cylinder 21 and hooking the impression cylinder 21 so as to be able to be brought into contact with and separated from it and driving means 26 each driving respectively individually the plate cylinder 22 and the rubber blanket cylinder 23 and the impression cylinder 21 of each set are provided and it is constituted in such a way that a sleeve 9 for the plate on which the machine plate 11 is mounted is removably installed on the outer periphery of the base shaft 8 of the plate cylinder on the plate cylinder 22 and a sleeve 13 for the rubber blanket on which a cylindrical rubber blanket 14 is mounted is removably installed on the outer periphery of the base shaft 12 of the rubber blanket on the rubber blanket cylinder 23.