Abstract
Relationship between composition of non-magnetic toners and charging properties and the electrophotographic developing characteristics were investigated by using a commercial laser printer. Several kinds of non-magnetic toners with various fractions of charge control agent (CCA) and carbon black were prepared by the conventional pulverzing method. The charging and developing characteristics were found to vary by the fractions of CCA and carbon black in the toners. It was shown that the charging and developing characteristics of the toners are altered by the addition of hydrophobic silica (SiO2) with different sizes.
