the class action lawsuit states that consumers had been deceived into buying a product that was designed to artificially and unethically introduce functional bottlenecks by tying them to ink levels, even if there's no practical link between them.
"As opposed to the "single function" printers it sells, Canon calls these multifunction devices a "3-in-1" or "4-in-1" for the fact they purportedly provide three or four functions," reads the class action complaint against Canon USA.
"In truth, the All-in-One Printers do not scan or fax documents when the devices have low or empty ink cartridges (the "Design Issue"), and Canon's advertising claims are false, misleading, and reasonably likely to deceive the public."
According to the lawsuit, Canon is only doing this to increase its profits by selling replacement ink cartridges, hence the accusations for unjust enrichment.