As a genuine Lexmark product, toner cartridges like the 78C0U40 offer a quality of print that is quite simply unobtainable by alternative products. The yellow toner powder that Lexmark have produced for the 78C0U40, fuses at the precise temperature produced by your printer, ensuring that each page looks fantastic.The high 7,000 page yield of the Lexmark 78C0U40 keeps the cost per page low and although it does not offer the same reduced cost of the Return Programme version, is still a cheap way of keeping your printer running with original cartridges. Lexmark guarantee the 78C0U40 for use in any of the colour laser printers we have listed on this page, including the CX622ade.