Fluid ejection polymeric recirculation channel
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael W. Cumbie, Si-Iam J. Choy
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Abstract
A fluid ejection assembly may include a fluid ejection die comprising a back face and a front face through which fluid is ejected. The fluid ejection die may further include a fan-out fluid passages converging towards the back face of the fluid ejection die, the fan-out fluid passages comprising a first fan-out fluid passage and a second fan-out fluid passage and a recirculation channel extending within a polymeric material from the first fan-out fluid passage to the second fan-out fluid passage adjacent the back face of the fluid ejection die.
Claims15
A fluid ejection assembly comprising:
- a fluid ejection die comprising a back face and a front face through which fluid is ejected;
- fan-out fluid passages converging towards the back face of the fluid ejection die, the fan-out fluid passages comprising a first fan-out fluid passage and a second fan-out fluid passage;
- and
- a recirculation channel extending within a polymeric material from the first fan-out fluid passage to the second fan-out fluid passage adjacent the back face of the fluid ejection die.
A method comprising:
- providing a fluid ejection die;
- molding a unitary polymeric body comprising:
- converging fan-out fluid passages;
- and
- a recirculation channel connecting the converging fan-out fluid passages;
- and
- joining the molded unitary polymeric body adjacent a back face of the fluid ejection die.
A fluid ejection assembly component for being joined to a fluid ejection die, the fluid ejection assembly component comprising:
- a unitary polymeric body comprising:
- fan-out fluid passages that converge, the fan-out fluid passages comprising a first fan-out fluid passage and a second fan-out fluid passage;
- and
- recirculation channels extending from the first fan-out fluid passage to the second fan-out fluid passage.
Dependencies are inferred from the claim text.