Whats a great color laser printer without toner cartridges to match the black cartridge yields an average of 4 500 pages with consistently impeccable 600 dpi resolution the color cartridges produce 3 500 copies of dazzling permanent color output on plain paper card stock paper labels bond and transparencies the cartridges are easy to install and the level monitoring feature on your optra sc 1275 sends out an alert when supplies are low