A copying apparatus includes an automatic document feeding unit for sequentially circulating and feeding documents to be copied, an image forming unit for forming images on the documents on both surfaces of each copying paper sheet by an electrophotographic process, a punching/binding unit for punching or binding a plurality of copying paper sheets subjected to image formation, an image shift unit for controlling a paper feed timing of a copying paper sheet with respect to a formation position of a document image, and a control unit for causing the image shift unit to perform image shift when even-numbered pages of documents are copied.