A connector includes a plug and a receptacle. The process cartridge includes an image bearing member, a cleaning member for removing a developer from the image bearing member, a frame provided with an opening, and a developer accommodating portion for accommodating the developer which was removed by the cleaning member and passed through the opening. The roof flanges 14, 15, a lateral peripheral portion of the transparent roof panel 4, and the shade support member 6, are disposed within a given positioning zone where they overlap each other in top plan view.