Effect of micro- and nanomagnetite on printing toner properties

Abstract

Toner is a main component of electrophotographic printing and copying processes. One of the most important ingredients of toner is magnetite (Fe which provides the tribocharging property for toner particles. In this study, nano- and microparticles of Fewere synthesized using the coprecipitation method and different amounts of lauric acid as a surfactant. The synthesized nano and micro Fewas then used as the charge control agent to produce toner by emulsion aggregation. The Feand toner were characterized by X-ray powder diffraction (XRD), atomic gradient force magnetometry (AGFM), dynamic laser scattering (DLS), particle size analysis, differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). The results show that the optimum amount of surfactant not only reduced particle size but also reduced the magnetite properties of Fe It was found that the magnetite behavior of the toner is not similar to the Feused to produce it. Although small-sized Fecreated toner with a smaller size, toners made with micro Feshowed better magnetite properties than toner made with nano Fe © 2014 Maryam Ataeefard et al.