A DEVELOPER DEVICE OF IMAGE FORMING APPARATUS

摘要

A developer device of an image forming apparatus is provided to maintain pressure of a developing room by not supplying developer any more if a certain quantity of developer is supplied to the developing room, thereby reducing stress applied to the developer and accordingly improving an existing problem such as deterioration of image quality. A developer device of an image forming apparatus comprises the followings: a developing unit which includes a developing roller(111) for conveying and attaching developer to a photosensitive medium, a developer supply roller(112) for covering the developing roller with the developer and a developing room(113) where the developing roller and the supply roller are placed; and a developer receiving unit(120) which is filled with developer and has at least one developer supply hole(121) for freely dropping the filled developer to the developing room.