Two-input, two-output fuzzy logic print quality controller for an electrophotographic printer

摘要

A control system for optimizing print quality in an electrophotographic printer uses a fuzzy-logic technique with only solid- area and half-tone density as control inputs, and only scorotron voltage and ROS laser power as outputs. The measured errors in solid-area and half-tone density are assigned to respective fuzzy-logic error subsets. Joint memberships of the solid-area and half-tone density error subsets are then used to derive error subsets are then used to derive correction values for laser power and scorotron voltage.