DEVELOPING MEANS, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent a detection error of a developer concentration detecting means by stabilizing developer concentration by limiting replenishing position of toner inside a developing container. SOLUTION: In the device, a guide member (29b) is provided in a lower part of a toner replenishing opening of a developing container (10a) and replenishing is carried out only to one row 10g between two rows of agitating screws 10g and 10h. The toner replenishing position is positioned on a downstream side of the carrying direction against the developer concentration detecting means 150.