IBM 6400 Models i5P, i05, i1P, i10, i15, and i20 join the 6400 family in providing professional industrial impact line printers. The 6400 family has models with maximum print speeds from 500 to 2,000 lpm, and with an array of features that can be used to customize the printer for many applications and attachments. The breadth of the 6400 family offers common features across the range of printer speeds.