Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-01-21
2009-08-04
Do, An H (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S054000, C347S065000
Reexamination Certificate
active
07568791
ABSTRACT:
The current invention provides for a nozzle arrangement for an inkjet printer. The nozzle arrangement includes a wafer substrate defining an ink supply channel therethrough, with side wall portions and a top wall portion arranged on the wafer substrate to define a nozzle chamber for operatively receiving ink, said top wall portion defining an ink ejection port and a plurality of etchant holes therein of sufficient diameter such that surface tension effects restrict ink being ejected from the chamber via the etchant holes. The nozzle arrangement also includes a thermal actuator cantilevered on the wafer substrate so that the actuator partitions the nozzle chamber, the actuator having a heater layer which produces thermal expansion of said actuator upon activation, thereby ejecting ink from the nozzle chamber via the ejection port.
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Do An H
Silverbrook Research Pty Ltd
LandOfFree
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