Electrohydrodynamics high-resolution ink jet printing control method

Abstract

The invention discloses an electrohydrodynamics high-resolution ink jet printing control method. The control method comprises multi-physical field parameter coupling model modeling of electrohydrodynamics ink jet printing and real-time high-resolution ink jet printing; the multi-physical field parameter coupling model modeling of the electrohydrodynamics ink jet printing comprises two aspects of conduction current multi-physical field parameter coupling model modeling of electrohydrodynamics spraying solution and building of a mapping relation between an electrohydrodynamics jet diameter and conduction current of the spraying solution; through real-time detection of magnitude of the conduction current, the jet diameter is effectively monitored in real time; through real-time detection of a conduction current value of the electrohydrodynamics spraying solution, such parameter values as voltage applied by the electrohydrodynamics ink jet printing, a spraying distance and the inlet pressure of an injection pump are adjusted in real time; and the jet diameter of the electrohydrodynamics ink jet printing is controlled to effectively improve the resolution of electrohydrodynamics ink jet printing patterns.

Description

technical field [0001] The invention relates to the technical field of electrohydrodynamic inkjet printing, in particular to a control method for electrohydrodynamic high-resolution inkjet printing. Background technique [0002] Electrohydrodynamic inkjet printing technology is to apply a voltage between the substrate and the nozzle. Under the action of the induced electric field force, the charges in the printing solution accumulate on the surface of the liquid, and the Coulomb force between the charges causes a tangential stress on the liquid surface. Under the action of tangential stress, the liquid forms a conical liquid surface at the top of the nozzle, usually called Taylor cone. As the electric field strength increases, when the electric field force overcomes the surface tension of the liquid, a jet is generated at the top of the Taylor cone. Because the liquid rheologically deforms into a conical structure before spraying, the jet is generated from the top of the con...

AI Technical Summary

Problems solved by technology

Therefore, these factors have an impact on the jet diameter of EHDJ printing, which affects the resolution of EHDJ printed patterns.

[0004] In order to ensure the resolution of the electrohydrodynamic inkjet printing pattern, the jet flow diameter of the electrohydrodynamic inkjet printing is detected in real time during the electrohydrodynamic inkjet printing process, and the electrofluid is adjusted in real time according to the detected jet diameter. Kinetic inkjet printing applied voltage, injection distance and inlet pressure of the syringe pump and other parameter values, however, using machine vision to detect the jet diameter of electrohydrodynamic inkjet printing, processing the image of the jet diameter during the detection process requires It takes a long time and it is difficult to meet the real-time requirements of control

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