Image forming apparatus

An image forming apparatus comprising:

• a storage unit configured to store recording sheets;
• an image forming unit configured to form an image on a recording sheet fed from the storage unit;
• an insertion unit, including an interleaving sheet tray on which an interleaving sheet is to be stacked, and configured to insert the interleaving sheet fed from the interleaving sheet tray between recording sheets conveyed from the image forming unit;
• a first detection unit configured to detect presence of the recording sheet in the storage unit;
• a second detection unit configured to detect a remaining amount of recording sheets in the storage unit;
• and
• a control unit configured to execute a mode selected from among a plurality of modes including a first mode and a second mode, based on the remaining amount detected by the second detection unit,
• wherein the first mode is a feeding mode for feeding the interleaving sheet, which is to be inserted by the insertion unit, from the interleaving sheet tray regardless of whether or not the first detection unit detects presence of the recording sheet in the storage unit, and
• wherein the second mode is a detection mode for feeding the interleaving sheet, which is to be inserted by the insertion unit, from the interleaving sheet tray based on that the first detection unit detects presence of the recording sheet in the storage unit.