PLATE CYLINDER, AND PLATE MOUNTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a stopper capable of surely preventing deviation of a cylindrical printing plate mounted on a plate cylinder.SOLUTION: A plate cylinder 1 includes a plate mounting surface 12 from a tip side of which a cylindrical printing plate 3 is fitted to be mounted, and a front stopper 4 is arranged at an end of the tip side. The front stopper 4 is constituted so as to switch its attitude between a projection attitude where at least one part thereof is positioned so as to project in the outside of the plate mounting surface 12 in the radial direction and a retraction attitude where the total thereof is positioned in the inside of the plate mounting surface 12 in the radial direction.