Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2011-06-28
2011-06-28
Stephens, Juanita D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S062000
Reexamination Certificate
active
07967420
ABSTRACT:
An inkjet printhead nozzle arrangement includes side walls provided on a wafer substrate and a roof layer deposited on said side walls to define an ink chamber, the roof layer defining a nozzle aperture; an inlet defined in the substrate to supply the ink chamber with printing fluid; and at least one heater element having two opposite sides parallel to a plane of the ejection aperture, the heater element adapted to generate a gas bubble at both of said opposite sides. The heater elements and associated electrodes are arranged in the chamber to be non-coincident and have an annular shape facilitating a point of collapse of the bubble near a center thereof. The heater element has a mass of less than 10 nanograms.
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McAvoy Gregory John
North Angus John
Silverbrook Kia
Silverbrook Research Pty Ltd
Stephens Juanita D
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