An image forming apparatus including a recording head to form an image on a recording medium, a carriage mounting the recording head and movable in a main scanning direction, a guide member extending in the main scanning direction to movably hold and guide the carriage, a stay member extending in the main scanning direction to hold the guide member, a frame member attached to the stay member to support the stay member, and an adjustment unit provided between and attached to a first end of the stay member and to the frame member to adjust an angle of the stay member with respect to the recording medium.