After posting low-ink warnings, those printers wouldn’t let us resume printing until we inserted a new cartridge. The quantity of unused ink ranged from about 8 percent in an Epson-brand cartridge to a whopping 45 percent in an aftermarket cartridge for a Canon printer.
(For the top-rated models, see our chart of top-rated multifunction printers.) PC World Test Center results show that models from Canon, Epson, and Kodak reported ink cartridges as being empty when in some cases the tanks had 40 percent of their black ink remaining. We tested using multifunction printers from four major manufacturers: Canon, Epson, Hewlett-Packard, and Kodak. In fact, some inkjet printers force users to replace black ink cartridges when the cartridge is nearly half full, PC World has found. PC World decided to do some real lab testing on this issue and the results confirm what you may have suspected: Many manufacturer-branded (OEM) and third-party (aftermarket) vendor cartridges leave a startling amount of ink unused when they read empty. Or perhaps your printer simply shuts down when it decides you’ve gone deep enough into its ink well, refusing to operate until you replace the cartridge, though you suspect there’s plenty of ink left.
Days or weeks later, you’re still using the same cartridge and thinking to yourself that rumors of its death were greatly exaggerated. You’ve probably had this experience: Your printer tells you it’s time to change the cartridge, but you dismiss the message and keep printing.
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