title: 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 (Fe3O4) which provides the tribocharging property for toner particles. In this study, nano- and microparticles of Fe3O4 were synthesized using the coprecipitation method and different amounts of lauric acid as a surfactant. The synthesized nano and micro Fe3O4 was then used as the charge control agent to produce toner by emulsion aggregation. The Fe3O4 and 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 Fe3O4. It was found that the magnetite behavior of the toner is not similar to the Fe3O4 used to produce it. Although small-sized Fe3O4 created toner with a smaller size, toners made with micro Fe3O4 showed better magnetite properties than toner made with nano Fe3O4.
authors.affiliation: Department of Printing Science and Technology, Institute for Color Science and Technology, P.O. Box 16765-654, 1668814811 Tehran, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Ataeefard
authors.affiliation: Department of Inorganic Pigment and Glazes, Institute for Color Science and Technology, 1668814811 Tehran, Iran.
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Ghasemi
authors.affiliation: Department of Chemistry, Islamic Azad University, East Tehran Campus, Tehran, Iran.
authors.forename: Mona
authors.initials: M
authors.lastname: Ebadi
mesh_terms: D005290:Ferric Compounds / Q000032:analysis*; D058185:Magnetite Nanoparticles / Q000032:analysis*; D008863:Microspheres; D010316:Particle Size; D033362:Powder Diffraction / Q000379:methods; D011327:Printing; D014961:X-Ray Diffraction / Q000379:methods
chemical_list: D005290:Ferric Compounds; D058185:Magnetite Nanoparticles; C000499:ferric oxide