For example, a single HP 934 black toner cartridge is priced at £46.49, far more expensive than the HP 305 ink cartridges, but it promises enough toner for around 1,000 printouts – which means ...

The black-and-white printer ... Because the Neverstop's toner cartridge can be refilled instead of needing to be replaced, HP said it has been able to reduce the environmental footprint associated ...