Arrayed electrohydrodynamic printhead without extraction electrodes

An arrayed electrohydrodynamic printhead without extraction electrodes, comprising an ink cartridge, a flow channel plate, and a nozzle plate, wherein

• the flow channel plate is disposed at a bottom portion of the ink cartridge, and a flow channel cavity thereof comprises a plurality of microfluidic channels communicating with the ink cartridge,
• the nozzle plate is disposed at a bottom portion of the flow channel plate, the nozzle plate comprises a plurality of nozzles and nozzle electrodes assembled therewith, the plurality of nozzles are correspondingly disposed and communicating with the plurality of microfluidic channels, and ink flows from the ink cartridge through the flow channel cavity and is ejected from the nozzles,
• the microfluidic channels between different nozzles and the ink in the microfluidic channels form a plurality of voltage division units, the triggered nozzles, the voltage division units, and the non-triggered nozzles form a voltage division circuit when a voltage is applied to the nozzles, and by adjusting a resistance value of the voltage division units or a grounding resistance value of the non-triggered nozzles, a potential difference between the triggered nozzles and the non-triggered nozzles is changed, so that a difference between the applied voltage and the potential difference is less than a onset threshold voltage, and that the nozzles are independently controlled,
• wherein the adjustment of the resistance of the voltage division units is implemented by adjusting an electrical resistivity of the ink and/or a geometric dimension of the microfluidic channels.