Image forming system and process cartridge mountable on same.

摘要

The present invention relates to an image forming system and a process cartridge mountable thereon. A developing device can be separated into a first portion including a developing roller and a second portion including a toner containing member, and the second portion can be removably mounted on the cartridge. Thereby, it is possible to utilize the toner containing containers effectively without repeating the positioning of the developing roller with respect to a photosensitive member.