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US 9,844,946 B2Granted
Molded printhead
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael W Cumbie
Life of this patent
Estimating the term…
Abstract
In one example, a molded printhead includes a printhead die in a molding having a channel therein through which fluid may pass directly to a back part of the die. The front part of the die is exposed outside the molding surrounding the die. Electrical connections are made between terminals at the front part of the die and contacts to connect to circuitry external to the printhead.
Claims20
A liquid ejection device:
- a plurality of liquid ejection dies;
- a molded panel of molded material in which the liquid ejection dies are embedded, wherein the liquid ejection dies are arranged end to end along a length of the panel, with ejection orifices of each liquid ejection die being exposed at a first surface of the panel;
- and
- a fluid channel fluidly connected to the liquid ejection dies for delivering liquid to the liquid ejection dies.
1 more element
A print bar comprising:
- a plurality of printhead dies;
- a molded panel of molded material in which the printhead dies are embedded, wherein the printhead dies are arranged end to end along a length of the panel, with ejection orifices of each printhead die being exposed at a first surface of the panel;
- a fluid channel fluidly connected to the printhead dies for delivering printing fluid to the printhead dies;
- and
- an electrical connection, comprising a bond wire, between a printed circuit board and a terminal on at least one of the die, wherein the bond wire is covered by an encapsulant which is covered by a flat cap.
2 more elements
A printing fluid cartridge comprising:
- a plurality of printhead dies;
- a molded panel of molded material in which the printhead dies are embedded, wherein the printhead dies are arranged end to end along a length of the panel, with ejection orifices of each printhead die being exposed at a first surface of the panel;
- and
- a fluid channel formed at least partially in the molded material of the panel, the fluid channel fluidly connected to the printhead dies for delivering printing fluid from a supply chamber of the cartridge to the printhead dies.
1 more element
Dependencies are inferred from the claim text.