| 摘要 |
An image forming apparatus includes an image bearing member, a developing device for developing an electrostatic latent image including a developer and a developer carrying member, a sensor for detecting information related to a toner charge amount of the developer, and a controller. An image forming period has a first period and a second period, during which different modes are executed by the controller to provide for a lower speed of the developer carrying member in the first period than in the second period. The controller is capable of executing an operation that lowers the potential difference between a non-image-forming portion of the image bearing member and the developing bias applied to the developer carrying member based on detection results of the sensor. |
