Instruct: Classify Amazon reviews into positive or negative sentiment
Query: can't print black only

After using this machine for several months, it flashed the need for all three color cartridges. It still had black ink, but (as I discovered at their website) this machine will not print if ANY one ink cartridge needs replacement. It appears that cartridges have a microchip that prevents refill and reuse, and "knows" when you re-insert old cartridge.