First, using low-quality ink or cleaning solution. If you use UV ink or cleaning solution that hasn't been certified by the manufacturer, they often have high volatility and strong corrosiveness. Long-term use can cause irreversible damage to the printhead, and in severe cases, can render the printhead completely unusable.
Second, printing on highly reflective materials. For materials with strong reflectivity, such as glass, mirrors, and thick acrylic, light can easily reflect back and damage the printhead. To address this, apply some black tape to the edges of the material, appropriately increase the distance of the UV lamp, or adjust the UV lamp's irradiation angle to minimize reflection as much as possible.
Third, printing on high-drop or white three-dimensional objects. For products with a certain height that are also white in color, such as helmets, gift boxes, toys, and shoes, this can also easily cause light reflection. When printing these products, be sure to create dedicated fixtures and fill the gaps between the products with black light-blocking material.
Fourth, issues with the equipment's electrical circuit or grounding. If the workshop's ground wire is not properly connected, the voltage is unstable, or there are frequent power trips, this can also easily burn out the printhead control board or even the printhead itself.
Fifth, issues with the workshop environment. If the workshop environment is dusty, the temperature is too high or too low, and daily maintenance is inadequate, this will accelerate printhead damage.
The printhead being scraped by the material is one of the most common situations. When printing materials like leather or soft TPU, the UV lamp's irradiation can cause the material to deform or warp. The raised parts can easily scrape the bottom of the printhead, leading to direct failure of the printhead.