Printhead assembly with ink leakage containment walls for nozzle groups
View Patent ↗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.
1. 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 surrounding a group of nozzle assemblies and defining a containment chamber to contain leakage ink from the group of nozzle assemblies therewithin.
2. A printhead assembly as claimed in claim 1 , wherein each pair of adjacent containment walls comprises a common wall portion.
3. A printhead assembly as claimed in claim 2 , wherein adjacent pairs of nozzle assemblies are staggered with respect to each other.
4. A printhead assembly as claimed in claim 2 , wherein the containment walls are of substantially the same material as the substrate.