9.2 Buying a Printer
9.2.4 Cost of ownership
It is important to check the related costs such as cartridges, toner, replacement parts, printing paper, and printing paper. What is the frequency of replacement, and how much of each is required to run the printer yearly or per business cycle? These are issues that account for running cost and the Total Cost of Ownership (TCO).

Usually, to print true black, most inkjets need to have a separate black cartridge. Check for inkjet printers that have separate cartridges for each color. It is much cheaper to replace just the color that is needed than to replace the whole cartridge unit. Note that replacing a color laser toner cartridge is much more expensive than replacing an inkjet cartridge, but printing with a color laser typically costs less per page.