| 摘要 |
A color printer has imaging stations disposed along a photoreceptor belt for producing images on the belt, the belt passing around an idler roll. One or more of the imaging stations is disposed on one side of the idler roll and a plurality of the imaging stations is disposed on an opposite side of the idler roll. A belt driver drives the photoreceptor belt around the idler roll and past the imaging stations. The printer includes a system for compensating for eccentricity in the idler roll to preserve registration among the images of the respective imaging stations, the system including a particular spacing of the imaging stations, a sensor of an index of the idler roll, and a corrector responsive to a position of the index for outputting an eccentricity correction to the belt driver. The correction alters the location on the belt of the image of the one or more imaging stations on the one side of the idler roll to compensate for the eccentricity by altering the speed of the belt or timing of the image scanning within each of the one or more imaging stations. Values of the correction are synchronized with the location of an index on the idler wheel.
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