Dual mode set stacking tamper and sheet feeder offset system

In an output system for handling the printed sheets sequentially outputted by a reproduction apparatus, including at least one output stacking tray, and at least one exit rollers sheet ejection system for ejecting said printed sheets into said output stacking tray, and further including an intermediate compiler tray with an edge tamping system including a tamper drive for moving said edge tamping system, in which compiler tray a set of said printed sheets may be compiled and aligned by edge tamping the sheets with said edge tamping system before being fully ejected into said output stacking tray, the improvement comprising a selectable mechanical interconnection system between said tamper drive and said exit rollers sheet ejection system for selectably laterally offsetting said exit rollers sheet ejection system with said tamper drive for selected said printed sheets in said exit rollers sheet ejection system so that said selected printed sheets may be stacked partially laterally offset from other said printed sheets in a stack of said printed sheets in said output stacking tray.