Image forming apparatus

An image forming apparatus comprising:

• a plurality of medium transport paths that branch at a predetermined branching position and along which a medium is transported in a curved state;
• a switching member disposed at the branching position and including a guide surface that allows the medium to be transported along one of the medium transport paths, the switching member switching between the medium transport paths;
• an output unit that outputs the medium toward a stacking portion, on which the medium is to be stacked, while corrugating the medium,
• wherein the output unit comprises a rotating member that rotates around a shaft;
• and
• a guide portion that guides the medium from the branching position toward the output unit in a region in which the medium is corrugated,
• wherein the guide portion is integrally connected to the guide surface of the switching member so as to extend toward a front side in a medium transporting direction to a position where the guide portion overlaps the rotating member when viewed in a direction of the shaft and the guide portion extends partially around the shaft.