Inkjet printhead with high nozzle density
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
An inkjet printhead is provided having an array of ink chambers each including a nozzle and an actuator for ejecting ink through the nozzle and being defined by sidewalls extending between a nozzle plate and underlying wafer substrate with one sidewall having an opening to allow ink to refill the chamber, an ink conduit between the nozzle plate and underlying substrate, and a plurality of ink inlets defined in the substrate. Each conduit is in fluid communication with the openings the chambers and with at least one of the inlets for receiving ink to supply to the chambers. The nozzles are arranged in rows such that the nozzle centres are collinear and the nozzle pitch along each row is greater than 1000 nozzles per inch.
Claims11
An inkjet printhead comprising:
- an array of ink chambers, each chamber including a nozzle and an actuator located in each chamber for ejecting ink through the nozzle, wherein the array of ink chambers is defined by sidewalls extending between a nozzle plate and the underlying wafer substrate, one of the sidewalls of each chamber having an opening to allow ink to refill the chamber;
- an ink conduit between the nozzle plate and underlying wafer, the ink conduit being in fluid communication with the openings of a plurality of the ink chambers;
- and
- a plurality of ink inlets defined in the wafer substrate, wherein each of the ink conduits is in fluid communication with at least one of the ink inlets for receiving ink to supply to the ink chambers,
- wherein the nozzles are arranged in rows such that the nozzle centres are collinear and the nozzle pitch along each row is greater than 1000 nozzles per inch.
Dependencies are inferred from the claim text.