METHODS, APPARATUS AND CONTROLLER FOR A DROPLET EJECTION APPARATUS
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Jun 3, 2021
filing date -
Jun 4, 2020
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Abstract
A method for providing a drive waveform for a droplet ejection apparatus. The method includes the steps of receiving a nominal drive waveform including a droplet ejection pulse having a nominal maximum amplitude Vmax(nominal) and for achieving a nominal droplet velocity vel(nominal) and further including a nominal non-ejecting pulse, ahead of the droplet ejection pulse, wherein the nominal non-ejecting pulse is spaced apart from the droplet ejection pulse by a first delay d1; receiving a target droplet velocity vel(target) and/or a target maximum amplitude of the droplet ejection pulse Vmax(target); adjusting one or more waveform parameters on the basis of the received vel(target) and/or Vmax(target) to provide an adjusted drive waveform to achieve at least one of vel(target) and Vmax(target); and outputting the adjusted drive waveform. A method is also provided for operating a droplet ejection apparatus.
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