It offers up to a 50 percent lower cost per pages compared to competitive color lasers, & saves you time, being faster than a laser on typical print jobs, with no warm-up period. The WF-4640DTWF uses up to 80 percent less power than competitive color lasers. Its high-yield cartridges are low maintenance & its 20ppm print speed in black & colors means you can print quickly with a print resolution of up to 4800x 1200 dpi. The paper capacity of up to 580 sheets means you wont need to spend time refilling. This inkjet printer has a monthly duty cycle of 30, 000 pages. Prints dry fast thanks to the DURABrite Ultra ink, meaning faster print speeds when printing double sided.