Inkjet printhead having nozzle chambers with redundant ink inlets
AssigneeSilverbrook Research Pty Ltd
InventorsGregory John McAvoy, Matthew Taylor Worsman, Kia Silverbrook
Life of this patent
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Abstract
An inkjet printhead includes: a substrate; a row of nozzle chambers disposed on the substrate; an ink conduit extending longitudinally adjacent the row of nozzle chambers; and a nozzle plate spanning over the ink conduit and the row of nozzle chambers. Each nozzle chamber has a respective ink ejection opening defined in the nozzle plate; a first ink inlet defined in a sidewall of the nozzle chamber for receiving ink from the ink conduit; and a second ink inlet defined in a floor of the nozzle chamber. Each of the first and second ink inlets is in fluid communication with a common ink reservoir.
Claims8
An inkjet printhead comprising:
- a substrate;
- a row of nozzle chambers disposed on the substrate;
- an ink conduit extending longitudinally adjacent said row of nozzle chambers;
- and
- a nozzle plate spanning over the ink conduit and the row of nozzle chambers wherein each nozzle chamber has:
- a respective ink ejection opening defined in said nozzle plate;
- a first ink inlet defined in a sidewall of the nozzle chamber for receiving ink from the ink conduit;
- and
- a second ink inlet defined in a floor of the nozzle chamber, each of said first and second ink inlets being in fluid communication with a common ink reservoir.
A printhead integrated circuit comprising:
- a substrate;
- a row of nozzle chambers disposed on the substrate, each nozzle chamber comprising an actuator for ejection of ink;
- drive circuitry for supplying power to each of said actuators;
- an ink conduit extending longitudinally adjacent said row of nozzle chambers;
- and
- a nozzle plate spanning over the ink conduit and the row of nozzle chambers wherein each nozzle chamber has:
- a respective ink ejection opening defined in said nozzle plate;
- a first ink inlet defined in a sidewall of the nozzle chamber for receiving ink from the ink conduit;
- and
- a second ink inlet defined in a floor of the nozzle chamber, each of said first and second ink inlets being in fluid communication with a common ink reservoir.
Dependencies are inferred from the claim text.