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US 2006/0125892 A1Published application
Inkjet printhead with bubble handling properties
AssigneeLexmark International, Inc.
InventorsJeffery Buchanan, Bruce Gibson, Steven Komplin
Life of this patent
Estimating the term…
Abstract
Some embodiments of the invention provide a printhead having a chip feed extending between an ink reservoir and printhead nozzles, wherein the chip feed has an inlet, and outlet, and one or more projections or recesses in a transition surface of the chip feed. The transition surface and the projection or recess can be inclined with respect to the outlet of the chip feed, and in some cases can be curved to present a concave or convex shape toward the outlet of the chip feed.
Claims23
An inkjet printhead comprising:
- a housing having an ink reservoir;
- an outer surface of the housing;
- an ink feed at least partially defining a fluid path extending from the ink reservoir toward the outer surface;
- a chip feed having an inlet in fluid communication with the ink feed and an outlet in fluid communication with the outer surface;
- a first plane at the inlet defining a first cross sectional area of the chip feed at the inlet, the first plane separating the ink feed from the chip feed;
- a second plane in which the outlet lies, the second plane defining a second cross sectional area of the chip feed at the outlet, the second cross sectional area being substantially greater than the first cross-sectional area;
- and
- at least one of a projection and a recess positioned along a transition surface of the chip feed between the inlet and the outlet.
5 more elements
An inkjet printhead comprising:
- a housing having an ink reservoir;
- an outer surface of the housing;
- an ink feed at least partially defining a fluid path extending from the ink reservoir toward the outer surface;
- an chip feed positioned to fluidly couple the ink feed and the outer surface, the chip feed defining a chamber having a roof elongated in a first direction and an outlet elongated substantially in the first direction;
- and
- at least one of a projection and a recess extending along at least part of the roof in the first direction.
3 more elements
An inkjet printhead comprising:
- a housing having an ink reservoir;
- an outer surface of the housing;
- an ink feed at least partially defining a fluid path extending from the ink reservoir toward the outer surface;
- an chip feed having an inlet in fluid communication with the ink feed and an outlet in fluid communication with the outer surface;
- a first plane at the inlet, the first plane defining a first cross sectional area of the chip feed at the inlet, the first cross-sectional area defined at least in part by a first width and a first length greater than the first width;
- a second plane in which the outlet lies, the second plane defining a second cross-sectional area of the chip feed at the outlet, the second cross-sectional area defined at least in part by a second width and a second length greater than the second width, the second length being substantially greater than the first length;
- and
- at least one of a projection and a recess extending along a transition surface of the chip feed between the inlet and the outlet.
5 more elements
Dependencies are inferred from the claim text.