US Patent 7258066 Inking system for flexographic printing presses

An inking system of a flexographic printing press with an anilox roller and a printing plate roller involved in color transport is shown. The positions of these two rollers relative to each other and to the impression cylinder are set using positioning elements that include bearing blocks in which the axles of the two rollers are mounted and which are traversed by motors which turn respective spindles that engage through an inner thread mounted in or on the bearing blocks. The motors are mounted on the machine frame on sides of the two rollers turned toward or facing the impression cylinder.