2-COMPONENT DEVELOPING DEVICE OF IMAGE FORMING SYSTEM USING ELECTROPHOTOGRAPHY

摘要

PURPOSE: A 2-component developing device of an image forming system using electrophotography is provided to eliminate ununiformity of developing concentration due to short supply of developer. CONSTITUTION: A 2-component developing device of an image forming system using electrophotography includes a developer stopping member(9) for guiding a developer transferred by a developing magnet roller(7) to form a developer collecting part at an upper side of a developing blade(8). The developer stopping member includes a guide(9a) for guiding transfer of the developer mixed by a mixer(11) along the circumferential direction of the developing magnet roller, and a developer collection guide(9d) for keeping the developer between the developer stopping member and the developing blade. The developer stopping member is placed between the mixer and the developing blade.