A new statistical method for analyzing corotron charging in a xerographic process has been
investigated. Four parameters of corotron charging and four settings of each parameter are selected
to analyze the effect of corotron charging. In the conventional method, if one parameter and one
setting are selected in one run, it needs 256 runs to complete the total experiment. If the L16
table of Taguchi method is used, it only needs 16 turns to complete the run test.