An image input/output apparatus having a scanner unit disposed at an upper stage of an apparatus body and a liquid jet recording unit installed at a lower stage of the apparatus body includes a window which light passes through between the scanner unit and the liquid jet recording unit; an exposure controlling unit configured to control linear irradiation by a light source which illuminates an original platen when a maintenance mode of the recording unit is selected; and a luminous flux irradiation unit configured to irradiate a periphery of a liquid jet recording head in the above liquid jet recording unit with a luminous flux emitted from the light source passing through the window.