Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-04-25
2006-04-25
Shah, Manish (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000
Reexamination Certificate
active
07032999
ABSTRACT:
A micro-electromechanical fluid ejection nozzle for a printhead is provided, comprising a nozzle chamber positioned on a substrate, and actuators and associated coupling structures for ejecting fluid from the chamber. The nozzle chamber has a static nozzle section and an active nozzle section. The static section has static walls extending from the substrate and the active section has a roof wall defining a fluid ejection port and an active wall depending from the roof wall about the static walls. The roof and active walls are displaceable relative to the static walls so as to change a volume of the chamber. This causes fluid in the chamber to be ejected from the port. The actuators are arranged to displace the roof and active walls with substantially rectilinear movement, via the coupling structures, on receipt of an actuating signal from drive circuitry on the substrate.
REFERENCES:
patent: 6364453 (2002-04-01), Silverbrook
patent: 6425651 (2002-07-01), Silverbrook
patent: 6536874 (2003-03-01), Silverbrook
patent: 2004/0100530 (2004-05-01), Silverbrook
patent: WO 00/23279 (2000-04-01), None
Mruk Geoffrey S.
Shah Manish
Silverbrook Research Pty Ltd
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