Abstract: An electronic copying machine according to the present invention has a copying unit for forming images on paper sheets and then discharging them, and a resupply unit for resupplying the same paper sheets to the copying unit, for other images to be formed on the sheets. The resupply unit has a pull-out unit which can readily removed therefrom, and the copying unit has a jam sensor for detecting that a paper sheet is jammed between the copying unit and the pull-out unit. When the jam sensor detects the jamming of a paper sheet when the copying machine is in overlap copying mode, the jammed paper sheet is forcedly discharged from the resupply unit. Alternatively, when the jam sensor detects the jamming of a paper sheet when the copying machine is in double-sided copying mode, the jammed paper sheet is forcedly pulled into the resupply unit.

Abstract: An electronic copying machine of the shell-type with a main body having an upper unit and a lower unit. The upper unit is provided with an original tray on which originals to be copied after being automatically fed to an exposure table are disposed. The upper unit is connected to the lower unit by a connecting part, in such a way that the upper unit can be swung by a predetermined angle in relation to the lower unit. The original tray is slanted, with its front end being made lower than its back end, to thereby form an elevation angle equal to or larger than the predetermined angle, in relation to the horizontal face. Even if the upper unit is swung by the predetermined angle, in relation to the lower unit, to expose the inside of the copying machine when a paper jamming trouble occurs the original tray is not slanted until its back end is made lower than the horizontal face, thus preventing the originals from sliding down from the back end of said original tray.