| 摘要 |
A developing apparatus includes a rotatable developer carrying that carries developer on its surface. A first screw conveys the developer in a developing chamber, a second screw conveys the developer in a collection chamber in a direction opposite to the first screw, and a third screw conveys the developer in the collection chamber in a direction opposite to the second screw. A rotation center of the third screw is disposed opposite to a rotation center of the second screw and in a projection area on which an area of the surface of the developer carrying member downstream of a first position in the rotation direction of the developer carrying member and upstream of a second position in the rotation direction of the developer carrying member is projected downward in a gravity direction in a cross section orthogonal to a rotation axis of the third screw. |
