This is the most common problem. Usually, this is caused by white ink precipitation, which is the main source of all problems. Here are the solutions:

1. Tank mixing: before performing any printing or maintenance operations, you should shake the tank to avoid sedimentation. This is a simple but effective method, which can prevent many problems. Some current printers already include this function.

2. Print head cleaning: before printing, clean the print head with simple operation. If you usually use a printer, this is enough. Go to print preferences, utilities, and select print head cleaning. Perform a nozzle check to ensure that all colors are correctly output.

3. Strong cleaning: if you don’t see any improvement after cleaning your head, you should perform strong cleaning. This cleaning will empty the circuit and damper. It will then refill them by releasing pressure and dredging the nozzles.

4. Shake or replace the damper: shake the damper at least every 15 days. Turn on the printer and unplug the power cord when the print head is unblocked. Tip! Please use the power board when pulling to avoid damaging the connection. Bring the print head to the working position. Remove the screws from the cover and loosen each damper with the help of a slotted screwdriver. Now shake them to prevent sediment. Make sure there is no air in it. If there is, you can suck it out with a syringe. If the dampers have a lot of deposits, you may need to replace them. Remove the hose and place it in a new hose. Reassemble everything, everything is ready.

5. Flushing: This includes flushing the cleaning solution through the nozzle of the print head. There are two kinds of flushing, one is not to disassemble the head, and the other is to disassemble it completely.

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