Influence of Electrostatic Properties of Development Roller Surface on Charging Characteristics of Mono-Component Toner

Abstract

In the mono-component non-magnetic toner system, proper toner charging and mass transfer are important factors to get fine quality images. In this report, we focus on the charging mechanism in the toner developing system. By using a microscopic current measurement technique, the dynamics of toner charging were investigated. It was found that a current was observed to flow through each part (i.e. the development roller, blade, and supply roller) during the roller rotation with toner attached on its surface. Development rollers that have various surface properties were prepared for this study. Toner charging has strong relationship to the magnitude of ionization potential of blade, toner and development roller. It was concluded that the microscopic current measurement technique is useful for discussing toner charging and toner transfer mechanism.