Lexmark Optra C720 Series Toner 

Lexmark Ink and Toner

By M. Worcester Lexmark's printers are either laser printers, which use a powdered toner in a large cartridge, or inkjet printers, which use a water-based liquid ink in small inkjet cartridges. Of the two, toner cartridges cost more, but print more pages than the less-expensive inkjet cartridges. Both types come in color and black.New printers sometimes come with a starter cartridge, which contains less ink or toner than regular cartridges ... Read more