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US 8,523,327 B2Granted
Printhead including port after filter
AssigneeEastman Kodak Company
InventorsKathleen M. Vaeth, John C. Brazas, David L. Jeanmaire
Life of this patent
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Abstract
A printhead includes a liquid source, a first substrate, a filter, and a liquid chamber. Portions of the first substrate define a nozzle adapted to emit liquid from the liquid source. The liquid chamber includes a port. The liquid chamber is in fluid communication with the nozzle and the filter and is positioned between the first substrate and the filter.
Claims16
A continuous liquid ejection printhead comprising:
- a liquid source;
- a first substrate, portions of the first substrate defining a plurality of nozzles that emit liquid jets from liquid provided under pressure from the liquid source;
- a filter;
- and
- a second substrate, portions of the second substrate defining a liquid chamber including a port, the liquid chamber being common to and in fluid communication with the plurality of nozzles and the filter, the first substrate and the filter being spaced apart from each other by the second substrate such that the liquid chamber is positioned between the first substrate and the filter, the filter spanning across the liquid chamber to define, along with the first substrate, portions of the liquid chamber, wherein the port is an outlet port through which liquid can flow out of the liquid chamber without passing through the plurality of nozzles.
2 more elements
Dependencies are inferred from the claim text.