Fluid ejection device with particle tolerant layer extension
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United States of America Patent
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Feb 20, 2018
Issued Date -
N/A
app pub date -
Jun 8, 2017
filing date -
Dec 20, 2012
priority date (Note) -
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Abstract
In an embodiment, a fluid ejection device includes a thin-film layer formed over a substrate. A primer layer is formed over the thin-film layer, and a chamber layer is formed over the primer layer that defines a fluidic channel leading to a firing chamber. The fluid ejection device includes a slot that extends through the substrate and into the chamber layer through an ink feed hole in the thin-film layer. The fluid ejection device also includes a particle tolerant extension of the primer layer that protrudes into the slot. In some implementations, the particle tolerant primer layer extension extends across a full width of the slot.
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