Printing press

Abstract

A printing press includes a plate cylinder, a plate making unit, and a detection unit. The plate cylinder is rotatably supported by a frame and has an outer surface on which a plate is mounted. The plate making unit is supported to be movable between an operative position where plate making is performed and a wait position to escape from the operative position to perform plate making for the plate. The plate making unit has an exposure unit and a support mechanism for supporting the exposure unit to be movable in an axial direction of the plate cylinder. The exposure unit has a head which irradiates the plate with a laser beam to print an image on the plate. The detection unit detects a position of the exposure unit with reference to the frame.

Dependencies are inferred from the claim text.