PROTECTION OF NOZZLE STRUCTURES IN AN INK JET PRINTHEAD

摘要

A printhead chip includes a substrate that defines a plurality of ink inlet conduits. A plurality of nozzle assemblies is positioned on the substrate and defines nozzle chambers in fluid communication with respective ink inlet conduits and nozzle openings in fluid communication with respective nozzle chambers. A nozzle guard is positioned on the substrate, is spaced from the nozzle assemblies and defines a plurality of apertures in alignment with respective nozzle openings. A plurality of containment walls is interposed between the substrate and the guard member to define a plurality of containment chambers with at least one nozzle assembly being positioned in each containment chamber.