| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for correcting non-uniform banding print quality defect in an image forming or printing process. <P>SOLUTION: A feedback control method for controlling an ununiform banding on a photoreceptor is disclosed that includes arranging optical sensors on the photoreceptor, transferring an amount of toner on a piece of paper, measuring the resulting amount of banding, and adjusting parameters to decrease the amount of banding. A method of measuring low deposited masses of a substrate is disclosed, using ETAC optical sensors or full width array sensors. Finally, a copying machine is disclosed including at least either an NC2 array sensor or an ETAC sensor, a developing unit roll voltage source, a ROS intensity source, an input device and a controller. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
