Printed output is assembled as sets in sequential order.
Every other print set is rotated by 90 degrees.
When the two paper trays contain the same size paper and same paper type in different orientations, the output result will be always Rotating Collate.
An optional finisher is required for this function.
The finisher shift tray moves backward or forward when a job or set is output, causing the next to shift, so you can separate them.