| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of performing stable transfer regardless of the change of the environment. SOLUTION: In the image forming device applying electrophotographic system, by forming plural toner pattern in the same density on a photoreceptor, and letting the transferring output successively changed for every toner pattern, the respective toner pattern is transferred on recording paper, transfer film or the like. Then, on detecting transfer efficiency of the respective toner pattern being transferred, based on such as the detected transfer efficiency of the respective toner pattern, transferring condition and the developing condition is severally controlled. |
