Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-11-05
2010-06-15
Luu, Matthew (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S042000
Reexamination Certificate
active
07735972
ABSTRACT:
A method of ejecting drops of an ejectable liquid from a printhead is provided. The printhead has nozzles, a bubble forming chambers and heater elements. Each heater element is an elongate strip suspended between corresponding electrodes on opposite sides of the chambers and having a cross-section with a lateral dimension different than that of each other strip of the corresponding chamber and at least triple the thickness of that strip. The thickness of each strip is less than 0.3 microns. The heater elements and associated electrodes are arranged so that the electrodes are non-coincident with the electrodes of the other heater elements. The method includes heating the heater elements above the boiling point of the bubble forming liquid to form a gas bubble that causes ejection of a drop of an ejectable liquid from the nozzle, and supplying a volume of the ejectable liquid equivalent to the ejected drop.
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Fidler Shelby
Luu Matthew
Silverbrook Research Pty Ltd
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