Printhead with nozzle face recess to contain ink floods

Details Printhead with nozzle face recess to contain ink floods Printhead with nozzle face recess to contain ink floods

2011-05-17

2011-05-17

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000, C347S065000

Reexamination Certificate

active

07942503

ABSTRACT:
An inkjet printhead that has a silicon wafer substrate that defines a plurality of ink inlet channels and a plurality of replicated nozzle arrangements positioned on the substrate to receive ink from the ink inlets and eject ink droplets onto a media substrate. Each of the nozzle arrangements has nozzle chamber walls, and a roof positioned on the nozzle chamber walls defining an ink ejection port. The roof defines a recess about the ink ejection port to inhibit ink spread from any nozzle face floods.

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