Cartridge E40 Black is a Canon genuine toner cartridge for Canon PC copiers, and the higher-yield partner to the E20. Canon rates it at approximately 4,000 pages at 5% document coverage, twice the E20. It replaces the earlier E31 cartridge. The single-cartridge system combines toner and drum in one unit, so there is only one consumable to change. Genuine Canon supplies are built to the same specifications as the machines they go into.

• For use with Canon PC copiers
• Yields approximately 4,000 pages at 5% document coverage
• Genuine Canon toner cartridge — black
• Replaces the earlier E31 cartridge
• Single-cartridge system: toner and drum in one replaceable unit