| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance the stability of image quality by estimating a point of time necessitating an image forming condition control taking into consideration of the consumption of developer and how to consume the developer, and then, deciding that it is the timing of performing the image forming condition control just when the estimated point of time comes. <P>SOLUTION: The number of pixels to which toner sticks among writing pixel data to be transmitted to a laser light source 51 so as to form an electrostatic latent image on a photoreceptor is counted by an on-dot counter 118. The counted number of pixels is integrated by a CPU 111, then, the integrated value is stored in the prescribed area of a RAM 113. When the integrated value reaches a previously set prescribed value, it is decided by the CPU 11 that it is the timing of performing the image forming condition control. <P>COPYRIGHT: (C)2004,JPO |
