Print data for display in which an operation screen of a multifunction periphery is described in a page-description language is created and outputted to an external memory medium. Specifically, the print data for display includes a screen description section 51 where an image is described by vector information and a function description section 52 where a function of the operation screen (operation when the operation button is pressed) is described by PJL. In another multifunction periphery, a bitmap image of an operation screen 60 is created and displayed by rasterizing the screen description section 51 of the print data for display read from the external memory medium, and the function of the operation screen is reproduced from information of the function description section 52.