Causes and solutions of flying ink in UV printer

As soon as you stop to clean the print head during the UV printer's printing process, a wide strip of color will become lighter when you continue to print. This is especially true when spraying solid colors (two-color). Anyone who uses equipment that uses nozzles to arrange up and down should have encountered it more or less.

So what is the reason for this? First of all, let's analyze the structure of the device first. Obviously, this kind of situation mostly occurs on devices with four colors arranged on top of each other and the inkjet volume is relatively small. Ink is a volatile liquid. If the ink dries quickly and the cleaning time is relatively long, coupled with the permeability of some inkjet printing parts, the ink that is sprayed on first is dry, and the ink that is sprayed later is difficult With it, discoloration naturally occurs in this case.

The reason is found, what method do we use to solve it? The usual method is to check the state of the nozzle before spraying each picture, and clean it if necessary to avoid cleaning the nozzle during the printing process; During the process of cleaning the print head, try to clean it as soon as possible, or clean several print heads separately to avoid color difference. However, some chromatic aberration and discoloration will inevitably occur during the actual operation. There is another method that can be adopted, which is to maintain a high humidity in the room.

As mentioned earlier, ‘in the case of fast ink drying’ the above phenomenon occurs due to a long pause. In response to this problem, the ink manufacturers can completely solve the problem, that is, to find a way to slow down the ink volatilization rate is that the ink drying time becomes longer, but experience tells us that if the drying speed is slow, there will be ink layers when sticking pictures and screen splicing. The phenomenon of being stuck by glue, and in this case, an auxiliary agent for increasing the adhesion of the ink can be added to the ink, but the production cost of the ink will also increase accordingly.

In short, inkjet companies always want to be able to use cheap and easy-to-use inks. As an ink manufacturer, they are doing everything possible to improve the quality of their products while reducing their costs as much as possible. It can be said that as long as there is competition Contradictions will exist, and this has precisely promoted the development of the industry.