Patent ID: 6721528
Filing Date: 2004-04-13
Classification: G03G

Abstract:
A method for regulating a lateral position of a band-shaped intermediate image carrier in an electrographic device that is moved along a transport direction from an image-generating position at which an image is generated on the intermediate image carrier to a transfer printing position at which the intermediate image carrier outputs information corresponding to the image, comprising the steps of:acquiring a mark on the intermediate image carrier regularly with a device-fixed sensor; acquiring a position of the intermediate image carrier transversely relative to the transport direction time-correlated with said step of acquiring the mark; implementing intermediate measurements of the position of the intermediate image carrier time-controlled between the regular acquisitions of the mark; comparing the acquired position values of the intermediate image carrier respectively to stored or calculated rated position values; and utilizing the comparison values for driving a position correction apparatus with which the position of intermediate image carrier can be changed transversely relative to the transport direction; wherein a plurality of position values of a lateral band edge are registered for determining the rated position values in a measurement event over a complete band revolution, wherein the first position is acquired a first time at the beginning of the band revolution and a second time at the end of the band revolution, the difference between the two position values of the first position is formed and correction values are formed therefrom for determining the actual course of the band edge, and wherein the correction values for the remaining positions of the band edge are determined by linear regression from the difference between the two measured values of the first position and from the spacings of the positions in band transport direction.