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 stirring member 22 that rotates to stir the developer stored in the storage part, and a plurality of piezoelectric elements 23a and 23b that are provided in the stirring member 22 and deformed to output voltage, the plurality of piezoelectric elements 23a and 23b having the magnitude of the output voltage value different from each other at the same amount of deformation.