DROP-ON-DEMAND PRINTHEAD

摘要

Drop-on-Demand Printhead A drop-on-demand ink jet printhead comprises a body formed with a series of parallel ink channels with respective ink ejectors formed in a row at corresponding channel ends and having means for ejecting ink drops from the channels. A housekeeping manifold is fitted to the ejector ends of the channels and affords a trench extending parallel with the row of ejectors through which the ejectors discharge drops. Openings in the trench connect the trench with the manifold and duct means in the body serve for supplying environmental fluids to and exhausting such fluids from the region of the ejectors by way of the trench, the openings and the manifold.