Image forming apparatus sequentially outputting a sheet having been subjected to image formation processing to a paper output tray

An image forming apparatus configured to sequentially output a sheet having been subjected to image formation processing to a paper output tray, comprising:

• a sheet conveyance path formed between a paper feed tray and the paper output tray;
• a heat-treatment portion configured so as to heat-treat a sheet being conveyed along the sheet conveyance path;
• a pair of conveyance rollers disposed downstream of the heat-treatment portion in the sheet conveyance path and configured so as to convey the sheet having passed the heat-treatment portion in a direction of the paper output tray;
• an outer sheet guide and an inner sheet guide configured so as to define a downstream part of the heat-treatment portion in the sheet conveyance path;
• and
• a cooling device configured so as to cool down the sheet being conveyed between the outer sheet guide and the inner sheet guide by cooling air, wherein:
• the outer sheet guide includes a ventilation portion in a position corresponding to a position of the conveyance rollers, the ventilation portion being configured so as to make the cooling air from the cooling device pass through;
• and
• the inner sheet guide includes a ventilation portion in a position opposed to a position of the ventilation portion of the outer sheet guide, the ventilation portion being configured so as to make the cooling air from the cooling device pass through.