Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-11-24
2010-11-30
Luu, Matthew (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000, C347S062000, C347S054000, C347S056000
Reexamination Certificate
active
07841704
ABSTRACT:
An ink jet printhead with an array of nozzles unit cells1. Each of the unit cells having one or more heaters10configured to form a gas bubble12in ejectable liquid held in the nozzle chamber. 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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Legesse Henok
Luu Matthew
Silverbrook Research Pty Ltd
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