| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device capable of eliminating a failure associated with the deterioration of developer occurring because a developing device is driven in a state where toner consumption is low. SOLUTION: This image forming device where an electrostatic latent image is formed on an image carrier and is developed by the developing device using the developer is equipped with an image area rate detection means for detecting the area rate of the formed image and a developing-driving time detection means for detecting the developing-driving time of the developing device. In the device, the developer is forcibly consumed in accordance with the area rate of the image per unit developing-driving time. |
