Under the concept of original cartridge (OEM cartridge) we understand brand-name cartridge made by the OEM printer manufacturer.
Powder (Developer)
From the moment it appeared on the market it had been used in the printers. Special separate containers for the toner and for the Developer were installed in these devices. The amount of the powder was sufficient for the specific number of copies.
In the a laser printers Developer has been used as a "refining" supplement to a original toner. Both substances are mixed with eachother.
Original black carrier (developer) Lexmark 700D1 [70C0D10]