FLUID EJECTION HEAD HAVING FLUID VISCOSITY COMPENSATION

Abstract: a fluid ejection head that includes a semiconductor substrate containing a plurality of fluid ejectors thereon and a fluid supply via etched therethrough. a flow feature layer is attached to the semiconductor substrate. the flow feature layer has a plurality of fluid channels and fluid chambers for the plurality of fluid ejectors, wherein the fluid channels are configured to provide fluid from the fluid supply via through the fluid channels to the fluid chambers for ejection of fluid through fluid nozzles associated with the fluid chambers. the fluid channels further include inlet channels and expansion channels that are configured to compensate for fluid viscosity variations. a nozzle plate containing the fluid nozzles is attached to the flow feature layer.

Inventor(s): Bruce D. Gibson

CPC Classification: B41J2/1404 ({Geometrical characteristics})

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