If you?re looking to improve the productivity and lower the operating costs of your business, the B411/B431 Series offers all of that and more. For starters, select series models deliver up to 40 ppm, with the first page printing in less than 5 seconds.1 They produce output in black & white that?s clear and crisp, at up to 1200 x 1200 dpi resolution2, using a two-piece consumables system for long-lasting performance and a low cost of operation.