(with ink toners, up to 50 percent of the toner cartridge is often still full). This constitutes "programmed obsolescence", in that there is no random component contributing to the decline in function.

In the Jackie Blennis v. HP class action suit, it was claimed that Hewlett-Packard designed certain inkjet printers and cartridges to shut down on an undisclosed expiration date, and at this point customers were prevented from using the ink that remained in the expired cartridge. HP denied these