In recent years, with the rapid development of social economy, UV inkjet printers have become more and more common in people's daily lives. As we all know, the nozzle is one of the important parts of the inkjet printer, and it is also one of the very delicate parts of the inkjet printer. The use of nozzles is focused on maintenance and upkeep. The quality of maintenance directly determines the effectiveness and duration of the nozzle. Therefore, how do general printer manufacturers extend the service life of print heads? First of all, in the environment, if the working environment of the indoor equipment is not very good, dust will easily enter the main ink cartridge, then into the secondary ink cartridge, and finally into the nozzle and affect the coding effect of the print head. Secondly, careful use in operation will increase the life of the nozzle. The surface of the nozzle must not be in frictional contact with any objects. Because there will be fine bristles hanging on the nozzle surface, causing blockage and ink dripping, which affects the coding effect. The last is the maintenance of the nozzle. The printer must clean the nozzle before shutting down and power off, and place the nozzle on the nozzle cover with a humidifying sponge pad to ensure the condition of the nozzle and the quality of spray paint, and to extend the service life of the nozzle to a certain extent. We all know that the nozzle of the printer is a relatively fragile part, but also a very core component. Because the maintenance of the nozzle requires careful maintenance. So as not to cause damage. This will make the printer unusable. This resulted in the loss of equipment for enterprises. Therefore, Guangzhou Jiangwei recommends that every person who operates the UV inkjet printer should carefully protect the nozzle and operate it carefully. Only in this way can the life of the printer be extended.