With an ink capacity of 11,000 pages, the Epson EcoTank M1140 Mono Ink Tank System Printer Duplex USB UP TO 20 ppm: Technology for Printing: Printing Technique: Accuracy Fundamental Heat-Free Technology Maximum Print Resolution (using Variable-Sized Droplet Technology): 1200 x 2400 dpi 2.8 pl is the minimum ink droplet volume. Automated Duplex Printing: Indeed Direction of Printing: Bidirectional Printing Speeds: A4 (black) draft text for a memo: up to three