Registration Error Measurement and Compensation Method for Modular Printing Systems

摘要

A Modular Printing (MP) architecture can significantly reduce hardware cost and improve configurability of digital printing sptems. However, image-to-image misregistration as the result of paper handling and multiple imaging modules could introduce halo and halftone moire artifacts and thereby present a challenge for print quality control. In MP systems, paper passes multiple imaging, development and fusing stations. Differences among subsystems of the print engines contribute to misregistration on the prints. In this paper, we present a method to measure and characterize the image-to-image (I-to-I) misregistration in MP systems. Based on the misregistration measurements, we can parse the misregistration into four main types: translation, rotation, magnification, and residual deformation. A parameterized digital compensation method can reduce misregistration for different media types based on the measurement.