Once a printer has been used for normal dye ink you should not switch ink types without flushing the system thoroughly by means of Cleaner / flushing cartridges. You should not switch between ink types without flushing,

In the event it is necessary to switch you should always flush the system fully with cleaner cartridges by using the head clean and nozzle check facility within your printer software, If the printer is not flushed fully and cleaned when switching brands of ink you will get poor quality results and waste valuable ink.

When using these cartridges you should use at least 50% of the contents continually cleaning, they are see- through so you can measure the content. These are prefilled with cleaning solution and are refillable auto reset so you can refill them countless times.