UV ink is the core consumable of UV printers, and the service life of equipment, printing stability and product quality are closely related to ink use and maintenance. Many equipment failures such as nozzle clogging, pattern chromatic aberration, ink layering and printing bubbles are caused by irregular ink use. This article summarizes the most common ink problems and scientific maintenance guidelines for users.
Ink stratification, precipitation and color difference are the most frequent problems in daily use. UV ink will produce component precipitation after long-term static placement, especially for white ink with heavy pigment particles. If used directly without shaking, it will lead to uneven color, light and dark stripes on the pattern, and even nozzle blockage. The correct operation is to shake the ink bottle fully for 3-5 minutes before each ink addition, and stir the ink in the ink tank regularly during long-term continuous printing to ensure uniform ink components.
Mixed ink failure and ink deterioration are also common misoperations. Different brands and different models of UV ink have different chemical formulas, and mixed use will cause chemical reactions such as ink agglomeration and precipitation, which will block the ink circuit and print heads in a short time. Users must follow the principle of dedicated ink for the machine, and it is forbidden to mix different inks arbitrarily. In addition, UV ink is sensitive to light and temperature. Long-term exposure to strong light or storage in high-temperature and humid environment will cause ink deterioration, failure and reduced curing performance. It is recommended to store ink in a cool, dry and dark environment, with the storage temperature controlled at 18-25℃.
Printing bubble and ink shrinkage problems are mostly related to ink quality and environmental humidity. Impure ink contains micro air bubbles, which will form hollow points on the printed pattern and affect the flatness. Excessively dry or humid working environment will also lead to ink shrinkage and uneven spreading. The solution is to use high-quality original ink, let the ink stand for a period of time after filling to eliminate air bubbles, and keep the workshop environment with constant temperature and humidity.
Regular ink system maintenance is also crucial. Users need to replace the ink filter element regularly, clean the ink tank and waste ink system periodically, and discharge deteriorated residual ink, so as to ensure the smoothness of the ink supply system and stable printing effect.
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