Canon imageClass D550 (4509B061) is a monochrome multi-function digital printer. It is specifically designed for home or small office placement and provides convenient access to the office functions you require. It features provides all mode duplex capabilities for printing, copying and scanning. The duplexing capability wil help customers be able to significantly reduce paper consumption by duplex printing documents from a PC. Through the device's 50 sheet duplex automatic document feeder, output is easily duplex printed for a more streamlined office workflow. Canon imageClass D550 uses Canon 128 black toner cartridge (3500B001AA), with a page yield of 2,100 at 5% coverage. Canon imageClass D550 boasts print and copy speeds of up to 26 pages per minute for letter sized output, and delivers quick first prints or copy pages in approximately 6 seconds. Load paper easily in the 250 sheet paper cassette and your black and white output comes out crisp and fast. Reduce and enlarge, collate or make draft copies from the easy to use control panel. The Canon imageClass D550 also incorporates the Canon single cartridge system, which combines the toner and drum in one easy to replace unit, resulting in excellent image quality retention and eliminating the complication and warehousing of separate toner and drum consumables.