Patent ID: 8965252
Filing Date: 2015-02-24
Classification: G03G

Abstract:
1. A developing device comprising: a first developing roller including a substantially cylindrical first transport member that transports developer showing magnetism by rotating while being close to a latent-image carrier rotating in one direction, the first transport member moving in a direction opposite the one direction, and a first magnet member fixed to an inner side of the first transport member and including a plurality of magnetic poles; a second developing roller including a substantially cylindrical second transport member that transports the developer showing the magnetism by rotating while being close to the latent-image carrier at a position on a downstream side of the first developing roller in the one direction, the second transport member moving in the same direction as the one direction, and a second magnet member fixed to an inner side of the second transport member and including a plurality of magnetic poles; and a regulation member that distributes the developer to be supplied to the first developing roller and the second developing roller so as to regulate transport amounts of the developer on the first and second developing rollers to required transport amounts, the regulation member opposing the first and second developing rollers with predetermined distances therebetween in an axial direction of the first and second developing rollers, wherein the first developing roller and the second developing roller are spaced from each other in horizontal direction substantially orthogonal to a gravitational direction, and wherein the regulation member is movably supported in an area closer to the latent-image carrier than a position where the first developing roller and the second developing roller are closest to each other, and the regulation member is formed by one substantially bar-shaped member showing non-magnetism.