US Patent 12078953 Image forming apparatus and fixing unit

An image forming apparatus includes an image forming portion configured to form a toner image on a sheet, a fixing portion configured to heat and pressurize the sheet bearing the toner image to fix the toner image to the sheet, a shutter provided to be movable to an open position at which the shutter opens an opening that the sheet being conveyed toward the fixing portion is able to pass through, and a closed position at which the shutter closes the opening, an urging portion configured to urge the shutter toward the open position, and an abutment portion that the shutter urged toward the open position by the urging portion abuts to be positioned at the open position.