Printhead with nozzle face recess to contain ink floods
First Claim
Patent Images
1. An inkjet printhead comprising:
- a silicon wafer substrate that defines a plurality of ink inlet channels;
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 nozzle arrangement having nozzle chamber walls, a roof positioned on the nozzle chamber walls defining an ink ejection port;
wherein,the roof defines a recess about the ink ejection port to inhibit ink spread.
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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.
41 Citations
7 Claims
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1. An inkjet printhead comprising:
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a silicon wafer substrate that defines a plurality of ink inlet channels; 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 nozzle arrangement having nozzle chamber walls, a roof positioned on the nozzle chamber walls defining an ink ejection port;
wherein,the roof defines a recess about the ink ejection port to inhibit ink spread. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification