Patent ID: 8708441

Claim:
A method of driving an inkjet module having a plurality of ink jets, the method comprising: applying a voltage waveform to the inkjet module in a jetting cycle, the voltage waveform comprising a first pulse that occurs at a first time during the jetting cycle and a second pulse that occurs at a second, different time during the jetting cycle, wherein within the jetting cycle the method comprises: using a first signal to activate a selected ink jet among the plurality of ink jets so that the selected ink jet: (1) accepts the first pulse of the voltage waveform at the first time; and (2) ejects a fluid droplet in response to accepting the first pulse; and using a second signal to activate all of the ink jets in the inkjet module to: (1) accept the second pulse of the voltage waveform at the second, different time; and (2) cause motion of a fluid meniscus without ejecting a droplet, wherein: for the selected ink jet, the jetting cycle includes only one first pulse; and for all of the ink jets in the ink jet module, the jetting cycle includes only one second pulse.