| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a charge removing device for reducing a factor affecting the short lifetime of a photoreceptor. <P>SOLUTION: A surface potential sensor movable linearly is arranged along a light source for charge removal where a plurality of LEDs allowing light quantity control are arranged in an array shape, the photoreceptor charged by a charger rotates, and the surface potential sensor measures the photoreceptor surface potential after light quantity smaller than a required light quantity for keeping a stable print quality, namely a predetermined light quantity for calculating the light quantity distribution, is radiated. As a result of the measurement, the light quantity of the light source for charge removal is determined to be smallest at the position having the highest potential, and the light quantity of the light source for charge removal is variably controlled so that the potential after charge removal of that part is a reference potential required for the stable print quality or lower. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
