| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of adjusting a transfer condition in accordance with the using condition of an individual user. SOLUTION: The electrophotographic image forming device is provided with a control means making a sensor for detecting a developed image on a photoreceptor detect the density of a developed image before transfer and that of a developed image left after transfer, measuring a transfer rate based on the detected density of both of them, and controlling to select and decide the proper transfer condition based on the measured transfer rate. |
