Toner tribocharging characteristics are affected by various factors : charging method, materials, environment and others. The toner charge stability is important for keeping a good image quality. Toner charge distribution is one of important factors in electrophotographic printing process. The toner charge distribution is changed by toner mixing conditions of toner weight % and toner mixing time. In this study, aerodynamic size and electrostatic charge distribution of the toner particles are measured individually by E-SPART (Electrical Single Particle Aerodynamic Relaxation Time) analyzer. It is found that two peaks in toner charge histogram arise in some conditions.
Disna Jayampathi Karunanayake, Lin Chun-Wei, Osamu Hoshino, Tetsuya Onoda, Yasushi Hoshino, "Toner Charge Distribution Change on Toner Mixing Time: Effect of carrier charging ability" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP24), 2008, pp 317 - 320, https://doi.org/10.2352/ISSN.2169-4451.2008.24.1.art00082_1