| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device or the like which can suppress generation of development density unevenness caused by deflection deformation of two cylindrical developer conveyance bodies, which are provided to rotate having a required gap with respect to a rotation direction of an outer periphery surface of a rotating latent image holder, and which rotate in the deformation state more deflecting from the latent image holder toward the center position in the shaft direction of the developer conveyance bodies.SOLUTION: In a developing device, from a plurality of magnetic poles in a first magnet member of a first developer conveyance body, and a plurality of magnetic poles in a second magnet member of a second developer conveyance body, magnetic poles respectively therefrom having different magnetism to be provided in the closest counter position are provided in an opposite area of an area where a latent image holder is present with respect to a virtual line connecting a center position of the first magnet member corresponding to a rotation center of the first developer conveyance body, and a center position of the second magnet member corresponding to a rotation center of the second developer conveyance body. |
