the present invention is concerned with a copying apparatus of the type which is provided with a reciprocal scanner , and in which copy operation is carried out not only during the forward movement of the scanner but also during the backward movement of the scanner . the copying apparatus herein disclosed has a movable reflector which is interposed in the optical path at the time of forward movement or at the time of backward movement , and stationary reflector for further reflecting the beam coming from the original once reflected by said movable reflector . said movable and stationary reflector cooperate with each other to invert the original image to be formed on a photosensitive medium at the time of backward movement or forward movement relative to the original image formed at the time of forward movement or backward movement .