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US 2017/0361613 A1Published application
Fluid ejection device with ink feedhole bridge
AssigneeHewlett-Packard Development Company, L.P.
InventorsRio Rivas, Anthony M. Fuller, Ed Friesen
Life of this patent
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Abstract
In an embodiment, a fluid ejection device includes a substrate with a fluid slot formed therein, a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot, a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer, and a chamber layer extension that forms a bridge across the IFH between two chambers.
Claims18
A print cartridge comprising:
- a fluid source;
- and
- fluid ejection device, the fluid ejection device comprising:
- a substrate with a fluid slot formed therein;
- a chamber layer formed on the substrate defining a plurality of pairs of fluid chambers, each pair of fluid chambers comprising a first fluid chamber on a first side of the fluid slot and a second fluid chamber on a second side of the fluid slot;
- a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer;
- and
- a chamber layer extension comprising a number of discontinuous bridges across the IFH between each pair of fluid chambers,
- wherein the thin-film layer extends across an entirety of the IFH.
6 more elements
A fluid ejection system comprising:
- at least one print cartridge;
- at least one fluid source coupled to each print cartridge to supply fluid to the at least one print cartridge;
- and
- a fluid ejection device comprising:
- a thin-film layer on a substrate;
- a chamber layer that defines a plurality of chambers;
- a primer layer between the thin-film layer and the chamber layer;
- thermal resistors formed in the thin-film layer and positioned proximate the chambers of the chamber layer;
- a slot extending through the substrate and into the chamber layer through an ink feedhole (IFH) defined in the thin-film layer, wherein the plurality of chambers comprises a plurality of chamber pairs, each of the chamber pairs comprising a first chamber on a first side of the slot and a second chamber on a second side of the slot;
- and
- a plurality of IFH bridges comprising a discontinuous chamber layer extension across the IFH between each of the chamber pairs;
- wherein the thin-film layer extends across an entirety of the IFH.
9 more elements
A print cartridge comprising:
- at least one fluid ejection device, each fluid ejection device comprising:
- a substrate with a fluid slot formed therein;
- a chamber layer formed on the substrate defining fluid chambers on both sides of the fluid slot;
- a thin-film layer between the substrate and chamber layer that defines an ink feedhole (IFH) between the fluid slot and the chamber layer comprising a thin-film layer extension that extends across an entirety of the IFH;
- and
- a discontinuous chamber layer segment on the thin-film layer extension, the thin-film layer extension and discontinuous chamber layer segment forming an IFH bridge.
3 more elements
Dependencies are inferred from the claim text.