Developing device, process cartridge and electrophotographic image forming apparatus

摘要

A developing device for developing an electrostatic latent image electrostatic latent image ed on an electrophotographic photosensitive member, the developing device is mountable to a main assembly of an electrophotographic image forming apparatus, the developing device includes a developing member for developing the electrostatic latent image formed on the electrophotographic photosensitive member; a first developer accommodation portion for accommodation a developer comprising toner and carrier to be used for developing the electrostatic latent image; a second developer accommodation portion for accommodating a developer comprising the toner and the carrier to be supplied to the first developer accommodation portion, wherein the second developer accommodation portion is provided with an openable discharging opening, and by opening the discharging opening, the developer accommodated in the second developer accommodation portion is supplied into the first developer accommodation portion; a supply opening for supplying the toner to the first developer accommodation portion.