| 摘要 |
A developing unit for an image forming apparatus including an agent carrying member, a supply compartment, a supply screw, a recovery compartment, a recovery screw, an agitation compartment, and an agitation screw. The agent carrying member carries and supplies developing agent to an image carrying member. The supply screw in the supply compartment supplies the developing agent to the agent carrying member. The recovery screw in the recovery compartment, provided under the agent carrying member, transports the developing agent dropped from the agent carrying member. The agitation screw in the agitation compartment receives the developing agent from the supply compartment and recovery compartment, and transports the developing agent to the supply compartment. The recovery compartment, supply compartment, and agitation compartment are provided side-by-side in a horizontal direction. A magnetic flux density in a given area of the agent carrying member is set to 10 mT or less.
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