| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus configured to prevent wrong operation in attaching/detaching a unit without using an additional member.SOLUTION: In a copier P, each of a drum unit c3 having a photoreceptor drum 1 and a developing unit c2 having a developing roller 2 for developing a toner image to the photoreceptor drum 1 can be drawn from a device body 10. The photoreceptor drum 1 includes: a pressing unit 13 which allows the developing unit c2 to move between a press position for pressing the developing roller 2 to the photoreceptor drum 1 and a pressure release position for separating the developing roller 2 from the photoreceptor drum 1 to release the pressed state; and a projection 40 which is integrally formed in the developing unit c2, protrudes in a drawing path of the drum unit c3 when the developing unit c2 is positioned in the press position, and retracts from the drawing path of the drum unit c3 when the developing unit c2 is positioned in the pressure release position. |
