Improved ultrasonic cleaning method in ink jet printing systems

Details Improved ultrasonic cleaning method in ink jet printing systems Improved ultrasonic cleaning method in ink jet printing systems

B - Operations, Transporting

41

J

B41J 2/165 (2006.01) B41J 2/17 (2006.01)

Patent

CA 2323820

The efficiency of ultrasonic cleaning of a printhead is improved by sweeping the stimulation drive frequency. The cleaning frequency is swept at a constant drive amplitude. The drive amplitude, lower frequency limit, and upper frequency limit are stored in the printhead memory. When the printhead is in an ultrasonic cleaning state, as determined by the state table, the print station varies the frequency at a fixed rate. The drive amplitude is kept constant during the ultrasonic cleaning state.

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