PRINT FLUID PASSAGEWAY THIN FILM PASSIVATION LAYER
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United States of America Patent
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Issued Date -
Mar 16, 2017
app pub date -
Mar 25, 2014
filing date -
Mar 25, 2014
priority date (Note) -
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Abstract
In an example, a printhead includes a die stack having a plurality of dies and a nozzle plate bonded together. A fluid passageway extends throughout the die stack to enable fluid to flow into a bottom die in the die stack, through the die stack, and out through a nozzle in the nozzle plate. The printhead includes a thin film passivation layer that coats all surfaces of the fluid passageway.
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