If the nozzle of uv roll to roll printer is used and maintained correctly, it can be used for a long time, but due to all incorrect operation methods, the service life of the nozzle is greatly reduced. After a long period of sorting, the 10 behaviors that may hurt the nozzle are summarized to remind customers to pay attention to daily maintenance.

1. Install and remove the circuit of the UV roll to roll printer at will without turning off the power switch and cutting off the total power supply. This behavior will damage the service life of each system and harm the nozzle.

2. Fill in different batches of ink at will, or use inks or cleaning fluids of unqualified quality. The mixing of two different configurations of ink will change the color and quality of the ink. Insufficient quality ink will affect the printing effect and block the print head. Unqualified cleaning fluid may corrode the print head.

3. Vigorously clean the nozzle with a high-pressure air gun. If the print head is slightly clogged, it is recommended to use a vacuum cleaner to wash out the dust and then carefully clean it. Do not use this method. 　　

4. Soak the nozzle in the cleaning solution. The cleaning fluid has a certain degree of corrosivity, so generally only appropriate amount is introduced into the nozzle for cleaning.

5. Leave the cleaning solution in the nozzle for more than 2 days and 2 nights. Long-term immersion of the cleaning fluid can effectively remove stains, but if the time exceeds 48 hours, it will affect the nozzle. 　
　
6. Use self-provided products without quality inspection to clean the nozzle. The nozzle is very easy to be contaminated and worn, so please use the product specified by the manufacturer and the product with the quality inspection clearance to clean the nozzle.

7. The position of the spray head is adjusted irregularly with external force. Regardless of whether to replace or fine-tune the nozzle, do not use brute force, please treat the nozzle carefully according to the specifications.
　　
8. When cleaning, do not pay attention to protect the circuit board and other internal systems. Please turn off the power when cleaning, and be careful not to let the water touch the circuit board and other internal systems.

9. Use an ultrasonic cleaner to clean the nozzle for a long time. In fact, if you usually pay attention to the maintenance of the nozzle, there is no need to perform ultrasonic cleaning at all. Ultrasonic waves can adversely affect the nozzle. However, if the blockage is serious and ultrasonic cleaning is required, the maximum cleaning time is 3 minutes. If it is not cleaned once, please wait for the nozzle to cool down to normal state before performing the second cleaning.

10. Do not pay attention to the safety of ground wire. The printing of uv roll to roll printer is greatly affected by static electricity, so it is necessary to connect the ground wire frequently, and regularly spray a little salt water around the ground wire.