An electrohydrodynamic printing nozzle and device

Abstract

The invention belongs to the relative technical field of electrofluid power jet printing equipment and discloses an electrofluid power printing nozzle. The electrofluid power printing nozzle comprisesan integrated deflection electrode and an integrated spray head, wherein the integrated deflection electrode is connected to one end of the integrated spray head; the integrated spray head comprisesa spray head shell and four spray heads, and one ends of the spray heads are accommodated in the spray head shell; nozzles are formed at one ends, close to the integrated deflection electrode, of thespray heads; the integrated deflection electrode comprises an annular deflection electrode connecting block and four deflection electrodes; the deflection electrode connecting block is connected to the end, far from a spray head interface, of the spray head shell; the four deflection electrodes are connected to the deflection electrode connecting block; and the four deflection electrodes separately correspond to the four nozzles in position. The invention also relates to an electrofluid power printing device. According to the invention, the printing precision is improved, the printing color gamut is expanded, and the validity of printing color is improved.

Description

technical field [0001] The invention belongs to the technical field of electrohydrodynamic jet printing equipment, and more specifically relates to an electrohydrodynamic printing nozzle and a device. Background technique [0002] Electrohydrodynamic jet printing is to apply a high voltage between the nozzle and the substrate to form a strong electric field, and pull the solution out of the nozzle, which can realize spot spraying, spraying, spinning and other processes. In the process of electrohydrodynamic jet printing, it is the Taylor cone that actually generates the jet. The geometric size of the Taylor cone is much smaller than the size of the nozzle. During electrojet printing, the diameter of the ejected point can reach 1 / 10 of the diameter of the nozzle. [0003] Inkjet printing technology can be driven by hot air bubbles and piezoelectricity. At present, the most widely used in the market is to use piezoelectricity as a driver. The piezoelectric nozzle squeezes ink ...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the existing color inkjet printing technology: 1. There is a certain distance between the four nozzles that spray the four solutions of C, M, Y, and K. Below, the ink droplets ejected from the four nozzles are mixed on the printing substrate, and the mixed ink droplets will slip to a certain extent, resulting in low positioning accuracy; 2. The size of the ink droplets ejected from the nozzles can only be changed in stages , For example, the ink droplets ejected from the nozzle of the HP printer can only be 2pl, 6pl and 10pl, so the mixed ink droplets can only produce a limited color gamut, and cannot print out true natural colors; 3. Ink droplets ejected from the nozzle The largest diameter is much larger than the size of the nozzle, and the size of the four ink droplets mixed will further increase, so the resolution of the printed pattern is not high

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