Paper output tray and image forming apparatus

A paper output tray holding sheets, which are discharged, the paper output tray comprising:

• a tray main body having an upper surface and a lower surface side opposite to the upper surface, the upper surface being a sheet holding surface;
• a first extension tray configured to be (i) housed on the lower surface side of the tray main body and (ii) pulled out from the tray main body in a sheet discharge direction;
• and
• a second extension tray which is rotatably supported by the first extension tray and which is rotatable to be in a closed state in which the second extension tray is folded with respect to the first extension tray and an open state in which the second extension tray is open with respect to the first extension tray so that a sheet holding region is wider than that in the closed state,
• wherein the first extension tray has a support portion extending downward from a virtual surface obtained by extending the upper surface, the second extension tray is rotatably supported by the support portion, and a rotational axis of the second extension tray is located below the virtual surface obtained by extending the upper surface of the tray main body.