printer toner magnetic powder and magnetic powder, according to sex and can be divided into electropositive powder and electronegative powder. Manufacture of printer toner additives within and outside the main additives: within additives including resins, dyes, charge regulator, paraffin, etc. , after melting, cooling, crushing made into fine powder, and then mixed with additives. Additives, main is to improve liquidity and adjust the charged amount of toner. Magnetic powder is usually made of fine iron oxide powder dye, non-magnetic powder with chemical dye. Each printer has its own design parameters, with matching printer toner. In order to ensure the printing quality and prolong the life of the printer, not quite professional personnel don't literally change the toner.