An image forming apparatus has plural process cartridges. Each process cartridge includes a photosensitive element; an electrification unit including a discharging unit and an electrification frame which contains the discharging unit and which has a first opening formed between the photosensitive element and the discharging unit and a second opening formed at a position opposite the first opening across the discharging unit; and a process frame including an exposure opening opposing the photosensitive element. The process cartridges are arranged such that one process cartridge of a pair of adjacent process cartridges opposes the second opening and the exposure aperture of the electrification unit of the other process cartridge. Also a regulation member configured to regulate airflow is provided between the pair of process cartridges. The regulation member has elasticity and is disposed in a position between the second opening and the exposure aperture of the electrification unit.