Abstract: An ink drop printing system for use as part of a duplicator. Sheets which are to be printed by the printing system are fed from one or another of two separate paper supplies and delivered along downwardly converging delivery paths toward a common reception point on a printing transport. The printing transport carries the sheets along a printing path which is angled upwardly and folded back from the delivery paths toward the common reception point. While the sheets are carried upwardly by the printing transport, they are printed by a plurality of inclined, angularly extending, and cooperatively operated jet drop printing heads.