| 摘要 |
A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field. <IMAGE> |
