An image forming apparatus includes a recording head including plural nozzles discharging liquid droplets, a head holder holding the recording head, a carriage holding the head holder, a guide member extending in a main scanning direction of the image forming apparatus, and a reference member extending in the direction substantially parallel to the direction of the guide member. Further, the carriage moves along the guide member, a part of the reference member is disposed in the carriage, and the head holder is attachably and detachably hooked on and held by the reference member.