Image forming apparatus that allows wind blown from air blowing port to be prevented from being ununiform in wind speed without increasing housing in size

An image forming apparatus comprising:

• an image forming portion configured to form an image on a conveyed sheet;
• a housing configured to store the image forming portion;
• an air intake fan configured to be provided at a side of the housing in a first direction along a width direction orthogonal to a conveyance direction of the sheet;
• a duct including an air blowing port, an extending portion, and a connecting portion, the air blowing port opening toward the image forming portion in the first direction and spaced apart from the air intake fan in a direction orthogonal to the first direction, the extending portion extending from the air intake fan to the air blowing port along a side wall portion of the housing in the first direction, the connecting portion connecting an extending end of the extending portion and the air blowing port, the duct being configured to guide air drawn in from outside of the housing by the air intake fan to the image forming portion;
• and
• a guide portion configured to be provided in the connecting portion and guide part of airflow into the connecting portion to an upstream side of the air blowing port in an extending direction of the extending portion.