PRINTHEAD INCLUDING POLYMERIC FILTER

摘要

A printhead includes a substrate and a filter membrane structure in contact with the substrate. A first portion of the substrate defines a plurality of nozzles. A second portion of the substrate defines a plurality of liquid chambers. Each liquid chamber is in fluid communication with a nozzle. The filter membrane structure includes a polymeric material layer and a plurality of pores. The plurality of pores are positioned to filter liquid provided to the plurality of liquid chambers.