| 摘要 |
PROBLEM TO BE SOLVED: To provide the control method of an image forming device by which the quantity of developer attached to a latent image carrier is prevented from being reduced caused by the deterioration of the developer by simple constitution. SOLUTION: A latent image for detection is formed on a photoreceptor 1 and developed by a second developing device 7. Then, the quantity of the developer attached to the formed developed image is detected by a sensor 12. Based on the detected signal, the exposure of a second exposure action 6 is increased so as to make the attached quantity of the developer proper. When the increased exposure arrives at a value being equal to or over a prescribed value, the deteriorated developer is consumed by forming the latent image for comsuming developer and developing it by the developing device 7. |
