Patent Document ID: 4569584
Application ID: 06679598
Patent Status: 1

Claim One:
1. The method of ensuring superimposed color component images on a section of recording medium in the production of individual color component images to form a multicolor composite image by a color electrographic recording apparatus comprising the steps of forming a series of tracking indicia on the medium adjacent at least one edge thereof, the indicia having a known spacing relationship and representative of a given value, observing the indicia as the medium is moved through the apparatus, determining whether the value obtained from the observed spacing between said indicia is the same or different from said given value, processing any difference in the values to form an error sample representative any such difference, and averaging a plurality of such error samples together, producing a correction signal based upon said averaging representative of an average in the shrinkage or expansion of said medium during medium transport, and applying the correction signal in the production of the color component images to prevent image misalignment due to medium shrinkage or expansion occurring during the production process.