Non-Electrostatic Adhesive Force between Photoreceptor and Toner Particles

—Effects of Toner Particles Size and Toner Surface Treatments—

Abstract

This paper describes adhesive force measurements using centrifuge method and effects of toner surface treatments in terms of non-electrostatic adhesive force (van der Waals force) between photoreceptor and toner particles in electrophotography.
Non-electrostatic adhesive force of toner is about 10-40 nN, and is proportional to toner particles size. It has been found that non-electrostatic adhesive force is reduced about 1/10 by treating the toner surface with fine particles, resulting in the force becoming almost independent of toner particles size.
Considering the experimental results based on Langbein equation, it has been clarified to reduce the adhesive force it is effective to use a slightly larger size additives so that the contact points on the photoreceptor can be reduced.