These cartridges stand up to a steady diet of 1200 dpi at 12 16 18 or 24 ppm without missing a dot they print on everything from bond paper and card stock to transparencies and labels gray scale transitions are super smooth to ensure the best possible print qualityreturnprebate 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 empt