DEVELOPING DEVICE, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To securely perform an opening/closing of a drum shutter interlocking with an opening/closing of a main door and to reduce a space for storage of the drum shutter, thereby miniaturizing the image forming device main body. SOLUTION: A first support member 200 is connected to one end of the shutter 52 in the opening/closing direction. The first support member 200 swingably supports the shutter between a protecting position where a photoreceptor drum 4 is protected and a retracting position which is away from the protecting position. A second support member 201 is connected to the other end of the shutter 52. The second support member 201 is movable in a direction perpendicular to the longitudinal direction of the shutter 52. The rotation center of the second support member 201 is disposed opposite to the shutter 52 with the rotation center of the photoreceptor drum 4 between them. In the second support member 201, a portion connected to the shutter 52 has the form of a long hole 202.