An image forming apparatus includes an access cover that opens/closes relative to an apparatus body, a carriage that includes an image forming device and moves in a moving area which is exposed when the cover is opened, a first detector that detects that the cover has been opened from a fully closed position to a first position, a second detector that detects that the cover has been opened to a second position at which the cover is more open than at the first position, a drive source that drives the carriage to move, and a controller that brakes the drive source while the drive source is supplied with power when the first detector detects that the cover has been opened to the first position, and cuts off power supply to the drive source when the second detector detects that the cover has been opened to the second position.