Nozzle assembly having a sprung electromagnetically operated...

Details Nozzle assembly having a sprung electromagnetically operated... Nozzle assembly having a sprung electromagnetically operated...

2008-03-19

2008-11-11

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

07448728

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.

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