GENERATE NON-UNIFORM ELECTRIC FIELD TO MAINTAIN PIGMENTS IN INK VEHICLE OF PRINTING FLUID IN NOZZLE REGION OF PRINTHEAD

摘要

A printhead includes a plurality of firing chambers, a plurality of fluid ejectors, and at least one field generating member. Each one of the firing chambers includes a nozzle region to receive printing fluid. The printing fluid includes an ink vehicle having pigments disposed therein. At least one field generating member generates a non-uniform electric field to apply forces to maintain respective pigments in the ink vehicle of the printing fluid in the nozzle region.