After using the UV tablet for a period of time, the printed pattern will have the problem of color strips. In fact, these problems are basically caused by the "nozzle blockage", which is also the main factor affecting the print quality and yield of the UV flatbed. Today, Le Cai UV tablet manufacturers and everyone analyze the reasons for the nozzle blockage, in order to better improve the picture quality and service life of the print later.
1: The ink is clogged on the outside after the nozzle has accumulated to a certain extent; it is the most common way of blocking, because the solvent in the ink must be volatilized into the air to make the picture dry, so the ink is a volatile liquid. It is volatile in the air and clears solids. When the nozzle is sprayed on the cloth, a part of the ink will remain in the surrounding area. This part of the ink will dry in the air and slowly make the nozzle hole smaller or even block the nozzle hole, but it is easy to be outside the nozzle hole. Clean up, which is why we often clean the nozzles.
2: The piezoelectric crystal is damaged; the nozzle can not be sprayed with ink. The general piezoelectric nozzle can be used for about one year. It is normal for the factory with a lot of printing work to be used for less than one year.
3: The filter inside the nozzle is blocked, so that the nozzle does not emit ink; the nozzle is used for a long time, especially in the factory where the inkjet task is not full and often stops at night, the ink does not flow in the nozzle for a long time, and it is easy to adsorb in the internal filter. On the wall of the net or the ink path, the cross-sectional area of the ink flow is reduced, which also causes the ink to be discharged from the nozzle. Now the special equipment can help you solve the problem of the nozzle.
4: Frequent ink replacement; in many cases, there is a possibility that the nozzle will not be protected and the inkjet state of the nozzle will be affected.
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