Abstract: A method of recovery from a machine paper jam with a plurality of sheets in a duplex tray of a machine operating in a pre-collation mode to provide multiple copy sets, including the steps of recycling the plurality of pre-collated or pre-ordered serial sheets in the duplex tray out of and back into the duplex tray to reorient the images on the sheets, reimaging the sheets that have exited the duplex tray but are still in process, stacking the reimaged sheets into the top of the duplex tray and recycling a second time the plurality of sheets originally in the duplex tray at time of jam into the duplex tray to reorient the images on the sheets for a second time.

Abstract: A method of automatically placing ordered paper stock (covers or inserts) from sets of paper stock, the sets of paper stock comprised of an arbitrary number of covers or inserts, into finished copy sets. In a reproduction job run, and with the method of automatic recovery from a machine paper jam in which the copy sheets or paper stock in process has become misoriented comprising the steps of selecting an automatic paper stock ordering option at the operator interface, programming the required order of the paper stock in a finished set of reproduced documents, determining the repetitive frequency of the insert sheets, and automatically selectively inserting or discarding insert sheets in order to provide sets of copy sheets with uniformly placed paper stock. Also, a method for automatically recovering after an operator jam clearance by selectively purging paper stock to maintain the continuity of the ordered paper stock in the completed copy sets.

Abstract: A method of providing a prominent time of completion display and percentage of completion display for a given job requirement and providing an indication of the amount of paper stock required from several sources of paper stock in a printing system including the steps of responding to entered job requirements to calculate a total time of completion for the given job and the paper stock required from each of the paper stock sources, displaying the total time of completion at the operator interface, displaying the amount of paper stock required from each of the paper stock sources, and initiating the job run and during the job run periodically determining the time to completion of the remaining portion of the job and displaying the time to completion in a prominent bar graph.

Abstract: A reproduction machine for making copies from original documents includes a diagnostic system for examining the operation of the transport devices moving paper sheets through the paper path. Paper path sensors are located along the paper paths for sensing the passage of paper sheets as they are moved therethrough. A device clock generates information regarding the times of sheet passage past sensors. Data representative of machine operating time and corresponding to paper sheet passage past the sensors is stored in an addressable memory for a number of paper sheet passages. Upon indication of a fault condition, such as a paper jam, the data stored in the addressable memory is moved to a non-volatile memory. A device control and display are provided to access and manipulate the stored data.