Developing unit and image forming apparatus having the same

摘要

A developing unit capable of dispersing a pressure of developer used therein includes a developer housing (120) to contain the developer and a blocking member (130) to divide the developer housing into a first section (121) and a second section (122), the second section including a developing member disposed therein to transfer the developer onto a photosensitive medium and to store the developer, the blocking member (130) being detachably mounted in the developing unit. When the blocking member (130) is detached from the developing unit, the first section is connected to the second section, so that the pressure of developer inside the developer housing can be spread evenly.