The size of a medium update program for adding a medium to a printer driver and printer is becoming larger due to an increasing number of available media, a larger-size profile used for image processing, and a variety of media lineups. A medium update program according to this invention searches for necessary medium integrated information based on an area and lineup information selected by a user. Then, the medium update program selects and inputs necessary medium integrated information, and shares information common to media, thereby creating all-media integrated information.