Image forming apparatus

An image forming apparatus comprising:

• an image forming unit having an image bearing member for bearing a toner image;
• a transfer unit which transfers a toner image on the image bearing member to a sheet;
• a fixing unit which fixes the toner image transferred by the transfer unit on the sheet by heat;
• a discharging member which discharges the sheet on which the toner image is fixed by the fixing unit;
• a stacking portion on which the sheets discharged by the discharge member are stacked;
• a reversing roller pair which is rotatable normally/reversibly and which conveys the sheet on which the toner image is fixed by the fixing unit in a first direction and thereafter conveys the sheet in a second direction that is an opposite direction of the first direction;
• a repeated feeding passage that conveys the sheet, which has been conveyed in the second direction by the reversing roller pair, to the image forming unit again;
• a plate-like tray that is disposed above the stacking portion and on a side of the first direction with respect to the reversing roller pair, and guides the sheet being conveyed by the reversing roller pair;
• an opening, through which an air passes, formed in the plate-like tray;
• and
• a fan which cools the sheet stacked on the stacking portion and the sheet being conveyed by the reversing roller pair while the sheet is being guided by the plate-like tray,
• wherein the fan is mounted on a bottom of the plate-like tray.