Contact pressure adjusting method and contact pressure adjusting apparatus for printing press

摘要

A contact pressure adjusting apparatus for a printing press, which can adjust a contact pressure automatically and always highly accurately without the influence of mechanical oscillations (disturbance such as noise), is provided. For this purpose, the contact pressure (load) of a wiping roll (20) on an intaglio cylinder (17) is converted into the torque value (electric current value) of a wiping roll drive motor (40) , and given as feedback to a wiping roll contact pressure adjusting motor (30).