An Arrayed Electrohydrodynamic Jet Printing Head

Abstract

The invention discloses an array electric fluid power printing head, which comprises an ink box, and a nozzle plate positioned at the middle part of the ink box and used for partitioning the cavity of the ink box into an upper cavity and a lower cavity; nozzle holes are distributed in the nozzle plate in an array mode, and the nozzle holes are communicated with the upper cavity and the lower cavity; the bottom of the lower part of the ink box is provided with ink outlets correspondingly arranged in an array; an upper electrode is arranged at the bottom of the nozzle plate, and a lower electrode is arranged at the bottom of the ink box, so that an electric field is formed in the lower cavity; and the ink in the upper cavity passes through the nozzle holes and enters the lower cavity, the ink forms jet under the action of the electric field of the lower cavity, and the ink is ejected for printing through the ink outlets. Because the electric fluid power printing principle is adopted in the array electric fluid power printing head, the jet diameter can reach 1 to 10 microns, and the jet is not affected by the diameter of a nozzle; and the array electric fluid power printing head has large jet dragging force, is suitable for high-viscosity solution, and does not destroy the material. The array electric fluid power printing head has the characteristics of simple structure, high printing precision and low cost, and has good industrial practicability.

Description

technical field [0001] The invention relates to the field of jet printing heads, in particular to an arrayed ink jet printing head. Background technique [0002] Inkjet printing equipment has been widely used in other fields in recent years due to its advantages of friendly manufacturing environment, saving printing materials, and simple operation. For example, using inkjet printing technology to manufacture flexible electronic transistors, biosensors, solar cells, microfluidic chips, etc. The traditional inkjet printing technology mainly adopts electrostatic continuous printing and on-demand printing, and on-demand printing includes piezoelectric inkjet and thermal bubble inkjet. The traditional electrostatic printing method, such as using the background electrode to charge the toner, the image information is converted into the pattern of the electrostatic control electric field by the control unit, and the electrode array with holes is opened and closed to selectively let...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an arrayed electrohydrodynamic jet printing head, which adopts the principle of electrohydrodynamic jet printing, and realizes the breakage of the jet by controlling the voltage, thereby generating ink droplets to form jets, flowing out from the nozzles, and realizing jet printing. Solve the current nozzle manufacturing process is complex, can not print sub-micron size patterns, high-viscosity ink can not be ejected and other problems, has the advantages of high resolution, high efficiency, adaptable to high-viscosity ink, etc.

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