Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buyer Beware: Cartridge scam

Seriously: watch out. This monster has proprietary cartridges that are verified via microchip. Fine. But the bigger problem is that the microchips tend to malfunction. When they do, and the printer can't recognize its cartridges, it shuts down completely--no printing, but also no scanning!!! Just appalling. I'm sending mine back asap. Do a google search to confirm this is a widespread problem, if you're skeptical.