| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of preventing paper sheets different in size from coexting in the same paper discharging tray by changing a paper discharging destination in accordance with the change of a sheet size when the discharging destination is unspecified. SOLUTION: This image forming device having plural paper feeding trays A to D, and plural paper discharging bins H to N is provided with a paper feeding tray storage means for storing the last paper feeding tray in use, a paper feeding tray change detecting means for detecting that the paper feeding tray is changed from the tray which is stored by the paper feeding tray storage means to another one, and a paper discharging destination changing means for changing the paper discharging tray from the last paper discharging tray in use to another one, in the case the paper discharging tray being the discharging destination is unspecified when the paper feeding tray change detecting means detects that the paper feeding tray is changed. |
