Developing device and an image forming apparatus using the developing device

摘要

The developing device of the present invention includes a developing magnet roller to supply developer to images to be developed, a first conveying auger arranged with a specified gap provided between the developing magnet roller to convey developer while stirring in the first longitudinal direction and supply developer to the developing magnet roller and a second conveying auger provided below the first conveying auger to receive developer conveyed from the first conveying auger and convey this received developer while stirring in the second longitudinal direction that is reverse to the first longitudinal direction and convey developer by circulating between the first conveying auger. This developing device further includes a housing to house the first conveying auger and developer so as to uniformly supply it to the developing magnet roller along the longitudinal direction irrespective of the developer accumulate height along the longitudinal conveying direction by the first conveying auger.