A original toner cartridge, also called laser toner. is the consumable component of a laser printer. Toner cartridge contain toner powder, a fine , dry mixture of plastic particles, carbon, and black or other coloring agents make that actual images on the paper. The toner is transferred to paper via an electrostatically charged drum unit, and fused on to the paper by heated rollers during the printer process. it will not stain like in cartridge, but it can messy if handled improperly.