Patent ID: 6208816
Filing Date: 2001-03-27
Classification: G03G

Abstract:
A developing device detachably mountable to a main body of an electrophotographic image forming apparatus and adapted to develop a latent image formed on an electrophotographic photosensitive member, comprising:a developing member for developing the latent image formed on said electrophotographic photosensitive member;a toner containing portion for containing toner to be used by said developing member to develop the latent image;an antenna member provided with electrodes and for detecting a remaining amount of the toner remaining in the developing device, said antenna member being movable within said developing device and said antenna member detecting the remaining amount of toner based on a change in electrostatic capacity between said electrodes; andan electrical contact for electrically transmitting information corresponding to the electrostatic capacity of said antenna member to said main body of said electrophotographic image forming apparatus.