Patent ID: 7620346

Claim:
An electrophotographic image forming device comprising: a main body; a belt unit that is detachably mounted at a first predetermined position in the main body, the belt unit having a belt that directly or indirectly conveys a developer image; and a photosensitive unit that is detachably mounted at a second predetermined position in the main body, the second predetermined position being in a mounting path through which the belt unit is detached from or mounted to the main body, the photosensitive unit having a photosensitive member, wherein: the belt unit is provided with a pressure-receiving part; the photosensitive unit is provided with a pressing part that contacts the pressure-receiving part and presses the belt unit toward the first predetermined position in a process of mounting the photosensitive unit to the main body; and the main body is provided with a guide unit that guides the photosensitive unit to the second predetermined position in the process of mounting the photosensitive unit.