Image forming apparatus

An image forming apparatus comprising:

• a tray;
• a casing having a first outlet, a second outlet, a first path, and a second path, the second path communicating with the second outlet such that a sheet conveyed along the second path is partially discharged from the second outlet and is reversed along the second path, the first outlet communicating with the first path such that the sheet conveyed along the first path is discharged from the first outlet onto the tray, the second outlet being above the first outlet;
• a stack lever supported by the casing and disposed downstream of the first outlet and the second outlet in a sheet discharge direction, the stack lever being movable between a first position where the stack lever presses a sheet on the tray and a second position higher than the first position;
• a drive source configured to cause the stack lever to move between the first position and the second position;
• and
• a controller configured to control the drive source such that, when the sheet is discharged from the second outlet, the stack lever is at the second position.