DEVELOPER REMAINDER AMOUNT DETECTION SYSTEM AND IMAGE FORMING APPARATUS

A detecting system for detecting a developer remainder in a developer container includes first, second and third electrodes provided in the container; an AC voltage source for applying an AC voltage to the third electrode; a first electrostatic capacity detector for detecting a first electrostatic capacity between the first electrode and the third electrode; a second electrostatic capacity detector for detecting a second electrostatic capacity between the second electrode and the third electrode; and a developer remainder detector for correcting the first electrostatic capacity detected by the first electrostatic capacity detector on the basis of the second electrostatic capacity detected by the second electrostatic capacity detector, and for detecting a developer remainder of the developer