Process cartridge and electrophotographic image forming apparatus

摘要

The present invention provides a process cartridge comprising an electrophotographic photosensitive member, a developing means for developing a latent image formed on the electrophotographic photosensitive member, a developer remained amount detecting member for detecting a remained amount of developer in the developing means, and a nonvolatile memory means for memorizing information corresponding to at least the print number of sheets and the developer remained amount in such a manner that such information can be read out and re-written by an image forming apparatus. The present invention also provides an electrophotographic image forming apparatus to which such a process cartridge can detachably mounted. <IMAGE>