Toner adhesion: effects of electrostatic and van der waals interactions

摘要

The force needed to detach spherical toner particles having a number average radius of 7.1μm from an organic photoconductor was determined by ultracentrifugation. In the absence of any release agents applied to the photoconductor, it was found that only a small fraction of the toner particles could be removed from the photoconductor, even at the highest centrifugal accelerations(354,000 g). However, when the photoconductor was coated with a thin layer of zinc stearate, the release force was reduced substantially and detachment was readily achieved, the remaining release force varying with the square of the toner charge-to-mass ratio.