Abstract
In Electrophotographic copiers and printers, for high image quality it is important to reduce vibration which affects optical systems. To confirm the effect of vibration reduction measures without trial machines, we have developed a numerical analysis method which is coupled mechanism analysis, structural analysis and ray tracing analysis. Using this method, it has become possible to evaluate numerically the dynamic behavior of misregistrations caused by optical parts vibration by vibromotive forces in drive systems and vibration characteristics of main frame, several units and another parts. Experiments for validation of the analysis method also have been done and it is confirmed that the estimated amount of misregistrations were almost the same as that of the experimental results.