The working principle of the nozzle of the connected inkjet digital printing machine

by:angelacrox     2021-08-18
The working principle of the nozzle of the digital printing machine, here is the working principle of the nozzle of the continuous inkjet digital printing machine, the continuous inkjet includes the deflection valve type continuous inkjet, the two-position continuous inkjet and the multi-position continuous inkjet. Today I will explain to you the principle of continuous inkjet technology. The principle of deflection valve type continuous inkjet is shown in the figure below. In this inkjet device, the ink is continuously ejected from nozzle holes with a diameter of 10μmd-100μm to form an ink stream, and then an air valve is used to selectively eject the ejected ink droplets onto the textile into a desired pattern. This type of digital printing machine nozzle is suitable for printing heavy fabrics such as carpets with large ink volume and high speed. The disadvantage is that the printing speed is faster, so the accuracy is lower, and the resolution is lower, which is limited in some precise printing patterns. The principle of two-position continuous inkjet is shown in the figure below. In this type of digital printing machine nozzles, generally 10^6Hz high-frequency piezoelectric crystals are used to form uniform and continuous ink droplets. After an electrostatic field, the ink droplets are selectively charged. These charged ink droplets The deflection occurs under the plate of the high-voltage deflection electrode, which is collected and reused. Uncharged ink droplets are sprayed onto the textile to form a pattern. The principle of multi-position continuous inkjet is shown in the figure below. The nozzle of this type of digital printing machine is different from the two-position continuous inkjet in that the ink droplets have different charges after passing through the electrostatic field. When these charged ink droplets are deflected differently under the high-voltage deflection electrode plate, the textile Patterns are formed on the surface, but the uncharged ink droplets are not deflected and are collected and reused
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