| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus and a method for compensating a development quantity. <P>SOLUTION: The image forming apparatus is provided with a photoreceptor 71 for forming an electrostatic latent image for an image, an electrifying roller 72 for electrifying the photoreceptor, a developing roller 74 for developing the electrostatic latent image formed on the photoreceptor, a measuring unit 79 for measuring the electrifying current flowing from the electrifying roller into the photoreceptor, a comparator 61 for comparing the electrifying current with a reference current, and a developing bias controller 67 for adjusting the control parameter of the developing unit so as to compensate the change in the film thickness of the photoreceptor based on the output of the comparator. Then, the information of a photoreceptor replacement time is given to the user, and the deterioration of the image quality due to the reduction of the film thickness of the photoreceptor is prevented by controlling a developing unit. <P>COPYRIGHT: (C)2003,JPO |
