DISCHARGING OF PRINTING INK

摘要

A sheet-fed printing press having an inking unit with ink applicator rolls for supplying ink to a plate cylinder and a damping unit having a damping solution applicator roll for supplying damping solution to the plate cylinder. The ink applicator rolls and damping solution rolls each are movable between thrown on and off positions relative to the plate cylinder. A control device is provided for predetermining a number of de-inking sheets that can be imprinted with an ink image while the ink applicator rolls and damping solution applicator rolls are in a thrown off position without ink being supplied from the inking unit. The control device is carried out as a function of prepress data or inline measured data. The printing press may also include a lacquering unit which is operable in thrown on or off positions during passage of said predetermined number of de-inking sheets.