Abstract: Backlit messages guide the operator through the process of making duplex copies in either a simplex to duplex or duplex to duplex mode. The queing or sequence of the messages will adapt to the order of operator activity or performance to instruct the operator on the next operation to be performed. Once certain operations are performed, some backlit messages are turned off. In particular the messages instruct the operator to determine if specific paper trays are empty, to suitably load a recirculating document handler, to remove copies from one tray and place in a second tray, and to reposition documents in the document handler.

Abstract: Simplex to duplex copying, is simplified in particular, the requirements are to reverse order the documents for a first pass, place all the documents in a recirculating document handler, move half copies or one sided copies to an auxiliary feed tray, and finally reverse the order of the originals. In another feature, the blank sheets are automatically scheduled and not billed on a customer billing meter.