Image forming apparatus that sorts sheets to one of two transport routes

An image forming apparatus comprising:

• an image forming device that forms an image on a sheet;
• a transport route extending to a predetermined position;
• a purge transport route extending to a downstream side in a sheet transport direction, from the predetermined position;
• an image forming transport route branched from the purge transport route at the predetermined position, and extending toward the image forming device;
• a transport roller that transports the sheet along the transport route, and along one of the purge transport route and the image forming transport route;
• a blowing machine that delivers the sheet to one of the purge transport route and the image forming transport route, by blowing air to the sheet being transported along the transport route;
• a control device including a processor, and configured to act, when the processor executes a control program, as an air volume controller that controls wind pressure of the blowing machine;
• and
• a reversing section being provided downstream of the image forming transport route in the sheet transport direction, and including a curved portion for reversing a face of the sheet,
• wherein the blowing machine is located in a proximity of a branch point of the transport route, and blows air from a side of the purge transport route to a side of the image forming transport route,
• wherein the air volume controller causes the blowing machine to blow air with the wind pressure corresponding to a bending stress exerted to the sheet in the reversing section.