Image forming apparatus having air cooling system

An image forming apparatus comprising:

• a sheet passage configured to guide a recording medium;
• an image forming device configured to form an image on the recording medium;
• a casing configured to accommodate the image forming device;
• a sheet discharging port through which the recording medium having the image formed by the image forming device is discharged from the casing;
• a discharging port interior space disposed inside the casing and including a part of the sheet passage and the sheet discharging port;
• an air guide passage that tapers toward the air exhauster and is configured to guide air in the discharging port interior space to an outside of the casing;
• and
• an air exhauster disposed in the air guide passage and configured to exhaust the air to the outside of the casing,
• wherein an air passage opening extends in a sheet width direction, and
• wherein the air exhauster is configured to exhaust air toward a side opposite to the sheet discharging port in the sheet conveying direction.

An image forming apparatus comprising:

• a sheet passage configured to guide a recording medium;
• an image forming device configured to form an image on the recording medium;
• a casing configured to accommodate the image forming device;
• a sheet discharging port through which the recording medium having the image formed by the image forming device is discharged from the casing;
• a discharging port interior space disposed inside the casing and including a part of the sheet passage and the sheet discharging port;
• an air guide passage that tapers toward the air exhauster and is configured to guide air in the discharging port interior space to an outside of the casing;
• and
• an air exhauster disposed in the air guide passage and configured to exhaust the air to the outside of the casing, wherein the air exhauster is disposed to cause the air to be exhausted toward an upstream side in a sheet conveying direction of the recording medium.