Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-02-28
2006-02-28
Meier, Stephen D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S074000, C347S075000, C347S076000, C347S077000
Reexamination Certificate
active
07004571
ABSTRACT:
A method, and apparatus for performing the method, are intended to prevent all of the ink discharged from a defective one of multiple nozzles in a continuous inkjet printhead from being used for printing on a print medium. This can be done by periodically heating the defective nozzle at a frequency that is greater than frequencies other nozzles which are not defective are periodically heated, to cause the defective nozzle to only discharge ink droplets that have a smaller volume than ink droplets discharged from the nozzles that are not defective. Then, the smaller volume droplets discharged from the defective nozzle are prevented from reaching a print medium, but the larger volume ink droplets discharged from the nozzles that are not defective are allowed to reach the print medium.
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Chwalek James M.
Garbacz Gregory J.
Bocchetti Mark G.
Eastman Kodak Company
Fields Rogers A.
Meier Stephen D.
Tran Ly T.
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