Image forming apparatus

An image forming apparatus comprising:

• an apparatus body;
• a first station in the apparatus body;
• second multiple stations in the apparatus body;
• a first image former detachably attachable to the first station;
• second multiple image formers detachably attachable to the second multiple stations, respectively;
• a first air supply port to supply air to the first station;
• second multiple air supply ports to supply the air to the second multiple stations;
• first exhaust port to exhaust the air from the first station;
• second multiple exhaust ports to exhaust the air from the second multiple stations;
• an exhaust duct communicating with each of first exhaust port and the second multiple exhaust ports to exhaust the air outside the apparatus body;
• and
• a sealer to seal the second multiple exhaust ports when the second multiple image formers are detached from the second multiple stations, respectively,
• wherein the sealer includes a restrictor to restrict an attachment of the second multiple image formers to the second multiple stations, respectively.