Printhead assembly with ink leakage containment walls for nozzle groups

摘要

A printhead assembly comprising a substrate defining a plurality of ink inlets; a plurality of nozzle assemblies positioned on the substrate, each nozzle assembly defining a nozzle chamber in fluid communication with a respective ink inlet and a nozzle opening from which ink is ejected; and a plurality of endless containment walls extending from the substrate. Each endless containment wall surrounds a group of nozzle assemblies and defines a containment chamber to contain leakage ink from the group of nozzle assemblies therewithin.