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US 2022/0032626 A1Published application
Curved fluid ejection devices
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael W. Cumbie, Si-lam J. Choy
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Abstract
A curved fluid ejection device may include a plurality of fluid ejection dies overmolded with at least one layer of epoxy mold compound (EMC). Each of the fluid ejection dies and the EMC include a coefficient of thermal expansion (CTE). The combination of the CTE of the fluid ejection dies and the CTE of the at least one layer of EMC defines a curve within the curved fluid ejection device.
Claims15
A curved fluid ejection device, comprising:
- a plurality of fluid ejection dies overmolded with at least one layer of epoxy mold compound (EMC), each of the fluid ejection dies and the EMC comprising a coefficient of thermal expansion (CTE),
- wherein the combination of the CTE of the fluid ejection dies and the CTE of the at least one layer of EMC defines a curve within the curved fluid ejection device.
A printing system, comprising:
- a roller to convey a print medium;
- and
- a fluid ejection device to eject fluid onto the print medium, the fluid ejection device comprising:
- a plurality of fluid ejection dies;
- a first epoxy mold compound (EMC) layer overmolding the plurality of fluid ejection dies;
- and
- a second EMC layer applied adjacent to the first EMC layer opposite the plurality of fluid ejection dies,
- wherein the combination of a first CTE of the fluid ejection dies, a second CTE of the first EMC layer, and a third CTE of the second layer of EMC defines a curve in the fluid ejection device.
5 more elements
A method of manufacturing a fluid ejection device, comprising:
- overmolding a plurality of fluid ejection dies within at least a first epoxy mold compound (EMC);
- and
- curing the first EMC,
- wherein a coefficient of thermal expansion (CTE) of the at least first EMC defines a curve within the fluid ejection device.
1 more element
Dependencies are inferred from the claim text.