1. A copying machine comprising: a discriminating section for discriminating on the basis of information of an image of an original a top-bottom direction of the image; a display section for displaying the image of the original when the discriminating section fails in discriminating the top-bottom direction of the image; an interface for receiving information that is inputted by an operator and is relevant to the top-bottom direction of the image of the original displayed in the display section; a rotation processing section that rotates or does not rotate the image of the original so that the top-bottom directions of images to be outputted become consistent according to a result of discrimination of the discriminating section and the information inputted via the interface; and an image forming section for forming on a sheet an image outputted from the rotation processing section.