| 摘要 |
A developing apparatus for developing an latent image formed on an electrophotographic photosensitive member with a developer in an electrophotographic image forming apparatus, the developing device includes a developer accommodating portion for accommodating the developer to be supplied to the developing member; a developer stirring member for stirring the developer in the developer accommodating portion, the developer stirring member including a rotatable member rotatably provided in the developer accommodating portion, a first stirring rotatable portion provided on the rotatable member, a first movable stirring portion movably provided on the first stirring rotatable portion, a second stirring rotatable portion provided on the rotatable member, and a second movable stirring portion movably provided on the second stirring rotatable portion, and wherein a radius of rotation of the first stirring rotatable portion and a radius of rotation of the second stirring rotatable portion are different from each other, and a part of a stirring region in which the first stirring rotatable portion and the first movable stirring portion stirs the developer and a part of a stirring region in which the second stirring rotatable portion and the second movable stirring portion stir the developer, are overlapped.
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