I manage 4x Epson wf7620 and 1x Epson wf3620 inkjet printers.
They all use the same ink cartridges, we use non OEM cartridges through amazon, we always buy the non OEM cartridges from a reputable brand with good reviews.
The print volume on these machines is pretty low, c. 2500 prints per machine per year.
When the print heads are clean the printers work fine, but after a while the print heads get dirty and require cleaning, cleaning isnt a one off task, but instead requires 5-10 cleans back to back to get them working again.
Any reason why this would be and is there anything that can be done to prevent it ? Or is this just how inkjet printers are ?