Printing, Copying, Scanning and Faxing in one package from the fine people at Canon.  The Canon imageCLASSS 4150 offers a variety of office functions in one sleek, compact package.  Your prints and copies will be done as fast as 21 pages per minute and when faxing you'll be impressed with the speed of the integrated Super G3 modem.  Featuring Duplex Output! The imageCLASS MF4150 provides two-sided capabilities for printing, copying and receiving faxes, enabling customers to significantly reduce paper consumption. Simply use the 35-sheet automatic document feeder (ADF) or letter sized platen glass to print on both sides of a single sheet of paper. This compact desktop design also incorporates Canon's Single Cartridge System—The easy-to-replace cartridge that simplifies maintenance by combining the toner, drum and other moving parts into one unit resulting in excellent image quality retention and eliminating the complication of purchasing or storing separate toner and drum consumables.