| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoreceptor deterioration degree calculation method for predicting change in image density/reduction in resolution, as an abnormal image, during image formation, as well as the time when the change in image density/reduction in resolution occurs, and preventing them to recover a photoreceptor, thereby extending the service life, and to provide an image forming device.SOLUTION: A photoreceptor deterioration degree calculation method includes: (A) forming an electrostatic latent image on a surface of a photoreceptor not heated yet, developing the electrostatic latent image on the photoreceptor surface to form a toner image, and measuring image density of the toner image on the photoreceptor surface; (B) forming an electrostatic latent image on a surface of the heated photoreceptor, developing the electrostatic latent image on the photoreceptor surface to form the toner image, and measuring image density of the toner image on the photoreceptor surface; and calculating a degree of deterioration of the photoreceptor on the basis of a degree of change in image density between (A) and (B). |
