Toner cartridge, also known as a drum, usually made of aluminum substrate, consisting of photographic materials and substrates coated. Cartridges not only determines the print quality is good or bad, also decided to use the consumer needs to spend money in the process. In laser printers, 70% more imaging components concentrated in the toner cartridge, the print quality is good or bad in fact to a large extent, is decided by the cartridge.
Selenium is a nonmetallic chemical element, chemical symbol Se. Can be used as a photo-sensitive material, electrolytic manganese industry catalyst, animal body of essential nutrients and beneficial plant nutrients.