Canon imageCLASS MF451dw Desktop Monochrome Laser Multifunction Office Printer1 Year Manufacturer Warranty. Canon imageCLASS MF451dw Desktop Monochrome Wireless Laser Multifunction Office Printer The Canon imageCLASS MF451dw models are intended for small and medium sized businesses and balance fast performance, low maintenance, and the ability to add an optional paper tray. A 5" color touchscreen provides an intuitive user experience and can be customized by a device administrator to assist in the simplification of many daily