Image forming apparatus

An image forming apparatus, comprising:

• a feed tray configured to accommodate a medium;
• an image forming engine configured to form an image on the medium accommodated in the feed tray;
• a discharge tray configured to receive the medium on which the image has been formed by the image forming engine;
• a medium conveyer configured to convey the medium accommodated in the feed tray to the image forming engine along a conveying direction and conveying the medium on which the image has been formed by the image forming engine to the discharge tray;
• a medium holder configured to hold the medium discharged to the discharge tray in a stopped conveying state and hanged from the discharge tray;
• and
• a controller configured to:
• select a first discharge mode for causing the medium holder to continue to hold the medium discharged to the discharge tray when a holding condition is satisfied or a second discharge mode for causing the medium holder not to hold the medium discharged to the discharge tray or to hold the medium discharged to the discharge tray for a prescribed period and then release the medium;
• and
• control operations of the image forming engine, the medium conveyer and the medium holder based on the selected discharge mode,
• wherein the holding condition includes at least one of a first condition being that material of the medium does not correspond to specific material and a second condition being that a medium length of the medium in the conveying direction is less than a first threshold value.