Control device, equipment and method for controlling electrohydrodynamics printing resolution

Abstract

The invention provides a control device, equipment and method for controlling the electrohydrodynamics printing resolution. The control device for controlling the electrohydrodynamics printing resolution comprises a magnetic field generation device used for generating centripetal Lorentz force and a controller connected with the magnetic field generation device. The controller is connected with two vision detection devices. A closed-loop control circuit is formed by the vision detection devices, the controller and the magnetic field generation device. An annular magnetic field is generated through an annular electromagnetic induction coil in a jetted liquid drop flying area, the movement of electrified liquid drops in the annular magnetic field is subjected to the effect of the centripetal Lorentz force, control parameters of the control device are adjusted in real time according to detection results of the vision detection devices so that the centripetal Lorentz force can be changed, the movement of the electrified liquid drops is effectively restrained, diffusion of the liquid drops to the periphery is restrained, the flying angle of the liquid drops is reduced, and therefore the electrohydrodynamics printing resolution is increased.

Description

technical field [0001] The invention relates to the technical field of electrohydrodynamic printing, in particular to a control device for controlling the resolution of electrohydrodynamic printing, printing equipment and a control method. Background technique [0002] Inkjet printing technology has received extensive attention in micro-nano processing technology, such as flexible electronic circuits, wearable electronic devices, solar cells, biological functional devices, microfluidic chips, etc. The traditional inkjet printing method usually adopts the thermal bubble type and the piezoelectric type driving method. They all adopt the push driving principle. The line width of inkjet printing is generally 20-50um. As the size of the nozzle decreases, it takes More pressure, and solution viscosity makes nozzles more likely to clog. For thermal bubble inkjet printing, heating is required, but high temperature will affect the performance of the ink; for piezoelectric inkjet pri...

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Problems solved by technology

[0004] To sum up, the existing electrohydrodynamic printing method is limited to high-resolution printing, and its resolution is difficult to be further improved. Device Printing Requirements

[0005] The Chinese invention patent with the application number CN201510966964.6 and the publication date of March 2, 2016 discloses a 3D metal printing system based on magnetic field regulation. By adjusting the deflection magnetic field strength of the printing positioning device in real time, the trajectory of the charged metal droplet can be changed. , to achieve accurate accumulation on the platform of the model placement device, this method does not involve controlling the resolution of electrohydrodynamic printing

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