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US 7,465,037 B2Granted
Printhead with rectifying valve at ink chamber inlet
AssigneeKia Silverbrook
InventorsMehdi Azimi, Kia Silverbrook
Life of this patent
Estimating the term…
Abstract
An inkjet printhead that has an array of ink chambers, each having an ink refill aperture, a nozzle and an actuator for ejecting ink through the nozzle, and, a fluid flow rectifying valve at the ink refill aperture for providing less hydraulic resistance to ink flowing into the chamber than ink flowing out of the chamber.
Claims19
An inkjet printhead comprising:
- an array of ink chambers, each having an ink refill aperture, a nozzle and an actuator for ejecting ink through the nozzle;
- and,
- a Tesla valve at the ink refill aperture for providing less hydraulic resistance to ink flowing into the chamber than ink flowing out of the chamber, the Tesla valve having a main conduit and at least one secondary conduit;
- wherein during use, ink flow out of the chamber is split into a main flow and a secondary flow such that when ink flows out of the chamber the secondary flow is combined with the main flow so as to constrict the main flow.
1 more element
Dependencies are inferred from the claim text.