a copying apparatus equipped with an automatic duplexed original document feeding device , which is so arranged that , in the course of operation for an original document in an original document feeding path , after suspension of the operation , any remaining operation with respect to said original document can be rapidly and correctly resumed . the status of the copying operation is monitored and stored , and upon restoration of the copying cycle the document can be correctly positioned to continue the copying cycle as if the copying operation had never been interrupted .