| 摘要 |
A developing device includes a developer transport body that transports developer to develop an electrostatic latent image on an image carrier, a housing that holds the developer transport body and defines an exposed portion and an unexposed portion, the housing including a storage portion storing the developer, and a layer-thickness regulation member that regulates a layer thickness of the developer transported to the exposed portion and includes one side close to a surface of the developer transport body, a first portion, and a second portion. The housing includes first faces that define both ends of the storage portion in the rotation axis direction of the developer transport body, a second face, and a third face. The developing device further includes a closing member that closes a gap between the layer-thickness regulation member and the second and third faces, and a magnet provided between the second and third faces.
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