Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2007-01-30
2007-01-30
Shah, Manish S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000
Reexamination Certificate
active
10773204
ABSTRACT:
There is disclosed an ink jet printhead that has a plurality of nozzles unit cells1and one or more heater elements10corresponding to each nozzle 3. Each heater element10is configured to heat a bubble forming liquid11in the printhead to a temperature above its boiling point to form a gas bubble12therein. The generation of the bubble12causes the ejection of a drop16of an ejectable liquid (such as ink) through an ejection aperture5in each nozzle3, to effect printing. The nozzle unit cells1are manufactured using semiconductor and micro mechanical techniques such that the spacing between adjacent nozzle apertures5in the printhead is less than 100 microns.With the use of semiconductor and micro mechanical manufacturing techniques, the dimension of the nozzles structures can be kept relatively small without significant increases in manufacturing costs. Therefore, the nozzle density in the printhead can be increased for greater printing resolution.
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Choi Han Samuel
Shah Manish S.
Silverbrook Research Pty Ltd
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