A fax/copy key (61) is positioned in the center of a cover (130) of a control panel (60). When the cover (130) is closed, a plurality of one-touch speed dial keys (62) are arranged under the fax/copy key (61). In other words, the fax/copy key (61) and the one-touch keys (62) are superposed. At a pivot of the cover (130) is positioned a cover sensor (65) to detect the open/close status of the cover (130). When the fax/copy key (61) is depressed while the cover (130) is closed, several one-touch keys (62) are depressed via a plurality of protrusions (61b) of the fax/copy key (61). Because the cover (130) is closed, the depression of the one-touch keys (62) is interpreted as the depression of the fax/copy key (61). This contributes to miniaturization of the operational input unit (60).