Print speed black: Normal: Up to 20 ppm First page out (ready) Black: As fast as 8.5 sec Duty cycle (monthly, A4) Up to 10,000 […]

                          https://www.printertec.com.br/arquivos_download/samsung/scx4216.pdf    

              http://colour-laser-printers.co.uk/pdfs/SCX-4720-XEU.pdf                  

                    http://www.samsung.com/ie/business/b2b/pdfs/products/printers/multifunctional/scx-4321_and_scx-4521f.pdf    

                            http://www.multiscope1.com/wp-content/uploads/2015/11/SCX-3405FW.XAA_.pdf