Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2011-08-16
2011-08-16
Stephens, Juanita D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S065000
Reexamination Certificate
active
07997686
ABSTRACT:
A nozzle arrangement for an inkjet printhead includes a wafer substrate defining an inlet channel; a nozzle chamber wall and a roof wall positioned on the wafer substrate to define a nozzle chamber in fluid communication with the inlet channel, the roof wall defining an ink ejection port in fluid communication with the nozzle chamber; a paddle positioned in the nozzle chamber and reciprocally displaceable to eject ink from the ejection port; and an actuating arm extending through the nozzle chamber wall and connected to the paddle, the actuating arm comprising an actuating portion having a pair of actuating members, one of the actuating members including a heating circuit. On receipt of an electrical signal to the exclusion of the other actuating member, the actuating arm is displaced in a first direction. The actuating arm is comprised of a resiliently flexible material, whereby on cessation of the electrical signal, the actuating arm is displaced in a second direction opposite to the first direction.
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Silverbrook Research Pty Ltd
Stephens Juanita D
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