Abstract
Toner display based on an electrical movement of black and white charged toners has been investigated. Two types of black and white insulating toners charged in the different electric polarity are enclosed between a two transparent electrodes. The particle movement is controlled by the external electric field applied between two transparent electrodes. The black toner is attached on the cathode by an electrostatic force across the insulating layer to display a black image. The black toner can be put back to the counter electrode and white toner is attached on the anode by applying a reverse electric field to display a white image. The black and white solid images are displayed by the switch of polarity of applied voltage in the toner display cell.