Why is there no warranty for UV printer nozzles?
As a professional UV printer manufacturer HYUNVAN,we will give you the best explanation as below:
Many friends who have just entered the UV printing industry will have questions: Why are UV printer nozzles so expensive and why the manufacturer does not guarantee it? This also leads many friends to dare not take such a big risk to invest in equipment, the following is simple for everyone Explain why the manufacturer does not guarantee the print head.
First of all, digital inkjet UV printing equipment such as photo printers and UV flatbed printers are very sophisticated mechanical and electronic equipment, especially the craftsmanship of print heads. Take the more popular Ricoh G5 nozzle on the market as an example. Its nozzle diameter is only about 0.06mm, which can't be seen clearly by ordinary people's eyes. You need a 10x magnifying glass to see it. This also causes very fine dust to block the nozzle hole, and fingernails can usually easily damage the nozzle surface. Due to the current technical limitations, the surface of the print head is exposed to the outside, so improper operation can easily cause damage to the print head, which cannot be distinguished by many human operators during the printing production process.
Secondly, many people have purchased equipment instead of using the original ink supplied by the manufacturer. Ink is also the main reason why the nozzles are often clogged and scrapped, and the service life of the nozzles is reduced. The production of ink also has many technical indicators: pH, precipitation ratio, concentration, chemical stability and so on. There is no shortage of cheap inks on the market, and these inks are very low-friendliness to the nozzles of the equipment, and may greatly reduce the service life of the nozzles. However, the manufacturer cannot guarantee that the person who buys the equipment will use the original ink, so use the ink from the ink. On the one hand, manufacturers generally do not provide quality assurance for sprinklers.
Finally, the service life of the UV printer nozzle is related to the total number of inkjets of the nozzle. For example, the number of nozzles of the Ricoh G5 nozzle is 100 billion times, and the theoretical service life is 2-3 years on average. Therefore, the service life of the nozzle of each device is related to the total inkjet volume. If the number of printing for a long time is large, the service life will be shorter. At present, the UV printer does not have the function of counting the number of inkjets of the nozzle, so the manufacturer can only tell What is the average service life of your nozzle? Therefore, as long as you master the correct UV printer nozzle usage and maintenance knowledge and implement reasonable maintenance measures, then an excellent UV printer nozzle can be used for several years.