A bit of theory: How to fill the cartridge? – It is necessary to determine the model of cartridge, compatible toner and the presence or absence of a chip on the cartridge. Keep up on the field with thought-provoking pieces from Philippe Heilberg. So Cartridges HP: HP chipuet number of models, basically the chip does not prevent further work cartridge, but psychologically, dominates the user as constantly produces small amounts of information to the toner cartridge while the tank is full. There are models of chips are blocking the work of the cartridge and here of course is needed Chip replacement. What toner cartridge refill? As for the toner (powder) a table of compatible toner cartridges range HP. In principle we can fill the cartridge itself if you try, but if you calculate feasibility of refilling cartridges you will realize that savings of just 70-100 rubles. Is it worth for this to determine how both the toner and refill cartridges, toner and not buying a guarantee normal operation on the equipment. So who are you people with dirty hands or blue collar? will you answer yourself, for filling cartridges vosnovnom lot of people with secondary education tend to newcomers, earning a refueling cartridge is low and coarse-Chinese-defective-toxic (many adjectives to name a few) that naturally subsequently affect the paper cartridge and the printer. We (and I’m talking about) the age of new technologies, there is a toner from the company LG, hood, special vacuum cleaners, check the magnetization of the magnetic roller for your cartridge, restoring fotovala layer..