Patent attributes
A developing apparatus includes a developer bearing member and a developer container having a first chamber and a second chamber. A first conveyance screw in the first chamber conveys developer in a first direction, and a second conveyance screw in the second chamber includes a first rotation shaft portion and a first blade portion to convey the developer in a second direction. The second conveyance screw also includes a second rotation shaft portion formed coaxially with the first rotation shaft portion and a second blade portion disposed downstream of the first blade portion to convey the developer in the first direction. Each of the first blade portion and the second blade portion are disposed in the second direction to face a first communicating portion. In addition, a developer discharging portion disposed downstream of the second blade portion in the second direction discharges a part of the developer from the developing apparatus.
