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US 10,479,080 B2Granted
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.
Claims15
A fluid ejection device comprising:
- a substrate with a fluid slot formed therein;
- a chamber layer formed on the substrate defining a plurality of fluid chamber pairs, each chamber pair comprising a first chamber on a first side of the fluid slot and a second chamber on a second side of the fluid slot;
- a thin-film layer between the substrate and chamber layer and extending across the fluid slot, the thin-film layer to define for each chamber pair, an ink feedhole (IFH) between the fluid slot and the chamber layer, each IFH being separate from each other IFH and distinctly defined by the thin-film layer;
- and,
- an IFH bridge that extends over the slot and runs along a side of the IFH from the first chamber to the second chamber of each chamber pair, the IFH bridge comprising an extension of the thin-film layer, an extension of a primer layer disposed between the thin-film layer and chamber layer, and an extension of the chamber layer.
2 more elements
A fluid cartridge comprising:
- a fluid ejection device that comprises:
- 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 chambers comprising a first chamber on a first side of the fluid slot and a second chamber on a second side of the fluid slot;
- a plurality of ink feedholes between the fluid slot and chamber layer, each ink feedhole (IFH) defined by a thin-film layer formed between the substrate and chamber layer and extending across the fluid slot, and each IFH associated with a particular pair of chambers;
- and,
- a pair of IFH bridges associated with each IFH, each IFH bridge in the pair of bridges extending over the slot and running opposite one another along either side of the IFH between the first and second chamber of a pair of chambers.
3 more elements
A fluid ejection system comprising:
- a fluid cartridge;
- a fluid source to supply fluid to the fluid cartridge;
- and
- a fluid ejection device comprising:
- a thin-film layer on a substrate;
- a slot extending through the substrate and into a chamber layer through a plurality of ink feedholes (IFH) defined in the thin-film layer, the thin-film layer extending across the slot;
- the chamber layer defining a plurality of chamber pairs, each chamber pair comprising a first chamber on a first side of the slot and a second chamber on a second side of the slot;
- a primer layer between the thin-film layer and the chamber layer;
- thermal resistors formed in the thin-film layer and positioned within each chamber;
- and
- a pair of IFH bridges associated with each IFH, each IFH bridge in the pair of bridges extending over the slot and running opposite one another along either side of the IFH between the first and second chamber of a pair of chambers.
8 more elements
Dependencies are inferred from the claim text.