Since I had been merely to replace the black cartridge, I can take even make reference in my review. After I used them (SX420W) appeared on the printer's display will indicate that the cartridge is not detected. I've then taken out twice and reseated. Only then will the printer no longer has bitched. I find this a little annoying! Especially, if one opts for the original cartridges.
In addition, I feel that the size L is again relatively quickly empty!
