An image processing apparatus includes: a storage that stores one or more files; a connector that connects the image processing apparatus to a portable terminal apparatus, the portable terminal apparatus including a display portion that remotely displays a screen of the image processing apparatus along with one or more application icons representing one or more applications installed on the portable terminal apparatus, the screen having: one or more file buttons and one or more file processing buttons; a receiver that receives display information from the portable terminal; a display data generator that generates remote screen display data on the basis of the display information, by moving the file processing button to a position at which the file processing button would be further away from the application icon; and a transmitter that transmits the remote screen display data to the portable terminal apparatus.