DEVELOPING CONTAINER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a technology that can improve the accuracy of detecting the amount of remaining developer.SOLUTION: A developing container includes a storage part that stores developer, a sheet-like stirring member 11 having flexibility that rotates to stir the developer stored in the storage part, a film-like piezoelectric element 12 that is attached to the stirring member 11 and deformed to output voltage, and a deflection forming part 9 that is brought into contact with the stirring member 11 when the rotating stirring member 11 is outside an accumulation area of the developer in the storage part to deflect the stirring member 11.