A method of increasing productivity in a reproduction apparatus wherein a first print engine and a second print engine are coupled by an inverter and synchronized. Each sheet of a plurality of receiver sheets is selectively printed in an invert mode or a non-invert mode. A difference of a travel time of a first receiver sheet in an invert path through the inverter in the invert mode as compared to a travel time of a second receiver sheet in a non-invert path through the inverter in the non-invert mode is adjusted so that the difference is an integral multiple of a period between the receiver sheets. Frames on a dielectric support member in the appropriate print engine are skipped when switching between invert mode and non-invert mode.