Surprisingly it was found that this printer does not print directly from the print cartridges themselves. Instead, the cartridges merely act as a reservoir to hold the ink before they are pumped up to the actual print head. More so, these pumps came pre-charged with ink. This means that to use this printer for printing circuits the reservoirs, tubes, and pumps must first be cleaned as to not contaminate the ink. It is recommended to find a printer that prints directly from the cartridges themselves so there is a less chance of contamination.