Image forming device and paper transporting method used in the same

摘要

Disclosed are an image forming device and a paper transporting method used in the same capable of improving a paper transporting path by arranging a transfer drum, a developing unit, an optical unit and a paper feeding unit in four quadrant directions centering around a photosensitive drum unit, thereby protecting the optical unit from mechanical shock or vibration, easily clearing paper jams of paper retained on the transfer drum and simplifying the overall structure of the device.