Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-04-11
2006-04-11
Gray, David (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S054000
Reexamination Certificate
active
07025436
ABSTRACT:
A method of detecting a blockage within an inkjet nozzle is provided. The inkjet nozzle comprises an ink chamber, an opening defined in a roof of the ink chamber, an actuating arm movable between a rest position and an operating position, and a movement sensor associated with the actuating arm. The movement sensor is activated by movement of the actuating arm to a predetermined position beyond the operating position. The detection method comprises the steps of: (a) passing a blockage-detecting current pulse having a predetermined duration tpthrough the actuating arm; (b) detecting for movement of the actuating arm to the predetermined position; and (c) comparing the detected movement with the movement in an unblocked condition. The movement of the actuating arm in a blocked condition is less than movement of the actuating arm in an unblocked condition.
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Design, Fabrication and Testing of a C-shape Actuator; G Lin, CJ Kim, S Konishi, H Fujita, IfM Lousiana Tech Univ., PO Box 10348, Rustom, LA 71272, USA; Mane Dept, UCLA, Los Angelees, CA 90095, USA; IIS, Univ of Tokyo, Roppongi, Minato-ku, Tokyo 106 Japan. *
No affiliations
Goldberg Brian J.
Gray David
Silverbrook Research Pty Ltd
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