| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device and an image forming method by which the fatigue and the secular change of the respective parts of the device can be precisely grasped. SOLUTION: A fatigue evaluation value is obtained by integrating the rotating amount of an intermediate transfer belt 41 (counted value of rotation). Based on it, the fatigue and the secular change of the respective parts of the device are presumed. Therefore, the fatigue and the secular change of the respective parts of the device can be precisely presumed. Even when the printing processing of one sheet is performed, the rotating amount of the belt 4 is one round in the case of monochromatic printing. However, it becomes 4 rounds in the case of color printing and corresponds to the degree of the fatigue and the secular change of a photoreceptor 21, a developing part 23 and the like. Therefore, even when the color printing and the monochromatic printing coexist, the fatigue and the secular change of the respective parts of the device can be precisely presumed by using the fatigue evaluation value. |
