| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device forming a high-quality stable image, without causing changes in gradation (change of image density) by stably keeping the electrified amount of developer, even if image density, service environmental conditions and the number of using times are changed. SOLUTION: By applying regulating member bias, which gives the potential difference between a developer carrier and a developer regulating member and also providing a density detection means for detecting the density of the formed image, the value of the regulating member bias is changed, according to the transition of the image density detected by the density detection means in this image forming device. |
