While I am not a fan of the ink carrtridge, it will seem essential for a mobile MFC. The print cartridge will come for four colors with the black a little larger since it is used more often. The cartirdges will have a means of returning the expired cartridges back to Senitrus free of charge. One will just insert the cartridges into the bag, seal the bag, and drop off anywhere your mail carrier will collect the mail. This will go a long way to providing a positive contrirbution to the world by reusing, or recycling. International envelopes are more expensive, but still offer a contribution to the ink cartridge waste that is so common.