Image forming apparatus

An image forming apparatus includes an exposure device configured to perform multiple exposure with a second light-emitting element array of a place exposed with a first light-emitting element array; and a controller configured to transmit a signal for controlling the exposure device. The exposure device sets a first pulse signal for light emission of the first light-emitting element array based on a first delay time and a first pulse width, sets a second pulse signal for light emission of the second light-emitting element array based on a second delay time, different from the first delay time, and a second pulse width, identical to the first pulse width, and starts and terminates light emission of each of the first light-emitting element array and the second light-emitting element array according to the set first pulse signal and second pulse signal.