A printer equipped with a display panel and configured to perform printing on a label surface of a disc based on an image displayed on the display panel, including: a displaying portion configured to display, on the display panel, (a) a subject image that is based on stored image data and (b) a disc frame representing a printable region of the label surface of the disc, such that the disc frame is superimposed on the subject image; a modifying portion configured to modify the subject image on the basis of an input operation by a user, such that the subject image is moved, enlarged, or reduced relative to the disc frame; and a printing portion configured to print, on the label surface of the disc, a part of the subject image existing within the disc frame.