Image forming apparatus

An image forming apparatus for forming an image on a recording material, comprising:

• a transfer portion configured to form a toner image on the recording material using toner containing release agent;
• a fixing portion configured to fix the toner image formed on the recording material by the transfer portion by nipping and conveying the recording material at a fixing nip portion formed with a pair of rotating members;
• a door configured to open a conveying path between the transfer portion and the fixing portion, the door being opposed to a surface of the recording material traveling through the conveying path;
• a duct provided on the door, the duct having an intake inlet for taking in air and an exhaust outlet for exhausting the air taken in from the intake inlet outside the image forming apparatus, the duct forming a closed space for an air flow travelling from the intake inlet to the exhaust outlet;
• a fan provided inside the duct, the fan being configured to generate the air flow travelling from the intake inlet to the exhaust outlet;
• and
• a filter provided detachably attachable to the duct, the filter being configured to collect particles with a predetermined particle diameter that are caused by the release agent,
• wherein the filter has a width that is equal to or greater than a recording material with a maximum width passing through the fixing nip portion in a widthwise direction perpendicular to a conveying direction of the recording material.