Image forming apparatus having removable fixing portion and filter holder

An image forming apparatus comprising:

• an image forming portion configured to form a toner image on a sheet by using toner containing a parting agent;
• a fixing portion configured to thermally fix the toner image formed on the sheet by the image forming portion;
• a duct, including a suction port provided opposed to a sheet feeding path between the image forming portion and the fixing portion, configured to discharge air to outside of the image forming apparatus;
• a filter, provided at the suction port of the duct, configured to collect particles of a predetermined particle size resulting from the parting agent;
• a holder configured to hold the filter;
• and
• a door provided at a side surface of the image forming apparatus and movable between a first position at which the door is opened relative to a main assembly of the image forming apparatus and a second position at which the door is closed relative to the main assembly of the image forming apparatus, the door including a guide member for forming the sheet feeding path and for guiding the sheet,
• wherein, through a space formed in a state in which the door is positioned in the first position, the fixing portion and the holder are separately removable, and
• wherein the fixing portion is detachable from the main assembly of the image forming apparatus and the holder is detachable from the duct.