Abstract
We have studied the conditions for eliminating background noise in the two-component conductive magnetic brush development process, both theoretically and experimentally.
A well-known maxim in this field is that a low-charged toner causes background noise. To confirm this maxim experimentally, we studied the relationship between background noise and development parameters, considering the electric and Van der Waals forces on the charged toner.
Our investigation produced the following results. First, extremely small or extremely large toner charges cause background noise, indicating that there is an optimum range for toner charge. Second, increasing the capacity of the photoconductor or decreasing the size of the toner particles expands the optimum range. The theoretical expression obtained agrees relatively well with the experimental data. Based on this expression, the suitable parameter values necessary for eliminating background noise and the required optical density were elucidated. These values included photoconductor capacity, reverse bias developing voltage, size of toner particles, and toner charge to mass ratio.
