How to refill your HP M452, M377, M377dw, M452dn, M452dw or M452nw laser printer cartridge

Toner and refilling technique also applies to HP M477fdn, M477fdw, M477fnw. Save at least two thirds the cost of an original cartridge and halve the CO2 footprint. Learn the simple approach we used to do ten successful refills without needing to change the chip. Follow in our footsteps and learn how we did it - working with the printer itself - and not just how we imagine it could be done. The following original HP part numbers can be refilled: CF410A, CF411A, CF412A, CF413A CF410X, CF411X, CF412X, CF413X Plus the "introductory cartridges" that arrived with your new printer. Get the refill products here: Get the fade out swatch here: U Refill Toner theme song "Microchip" by Jason Farnham, courtesy of YouTube.