The HP Neverstop Laser Printers are equipped with an innovative toner tank. The toner is supplied as part of the Toner Reload Kit (TRK), which allows the user to press the toner into the tank in a similar way to a syringe. The TRK is connected to the printer with a kind of bayonet lock. The user is guided step by step through the process and can perform this task quickly and conveniently. Waste, which is usually accrued when replacing toner cartridges, is avoided.