Lexmark has engineered its optra t print cartridges as an integral component of the optra t family of laser printers they are designed and manufactured to meet the extraordinary demands of the optra t laser printers with a superior yield of 10 000 pagesreturnprebate cartridges are sold at a discounted price vs the price of regular cartridges in exchange for the customers agreement to use the cartridge only once and return the cartridge to lexmark for recycling once its empty all toner bo