DEVELOPER SUPPLY MEANS, PROCESS CARTRIDGE, DEVELOPING DEVICE AND IMAGE FORMING DEVICE

摘要

PURPOSE: To provide a process cartridge excellent in sealing performance at the opening part of a developer supply container and capable of preventing toner from flying. CONSTITUTION: A shutter member 53 is turned at a curvature in which it is always prevented from coming into contact with a sealing member 58 when it is turned. The direction of force exerted on the sealing members 58 and 59 by the shutter member 53 at the time of closing the opening part 55 of the developer supply container 51 is set to a direction toward the inner part from the outer part in the radial direction of the cross section of the container main body 51. At this time, the shutter member 53 is elastically deformed.