Nozzle assembly having a sprung electromagnetically operated plunger
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
The invention provides for a nozzle assembly for a printer. The assembly includes a substrate and drive circuitry on the substrate. A plurality of layers is stacked on the substrate to define an ink chamber with an ink ejection port. A magnetic plunger is positioned within the ink chamber below the ejection port. Also included is a toroidal electromagnet device connected to the drive circuitry, positioned about the plunger and fast with the stack layer, and a number of springs connecting the electromagnet device and the plunger, to restrict movement of the plunger relative to the electromagnet device.
Claims7
A nozzle assembly for a printer, said assembly comprising:
- a substrate;
- drive circuitry on the substrate;
- a plurality of layers stacked on the substrate to define an ink chamber with an ink ejection port;
- a magnetic plunger positioned within the ink chamber between the substrate and the ejection port;
- a toroidal electromagnet device positioned about the plunger and fast with the stack layer to be connected to the drive circuitry;
- and
- a number of springs connecting the electromagnet device and the plunger, to restrict movement of the plunger relative to the electromagnet device.
Dependencies are inferred from the claim text.