Effects of Environmental and Physical Parameters on the Electrostatic Charge Distributions of Toners

Abstract

Aerodynamic size (d_a) and electrostatic charge (q) distributions of black and color toners are influenced particularly by agitation time, toner-to-carrier mass ratio and relative humidity. An electrical single particle aerodynamic relaxation time (E-SPART) analyzer was used to measure the d_a and q/m distributions providing non-contact, real-time, single-particle measurements.
Experimental data show most toners acquire bipolar charge distribution, but reverse polarity charging is more significant in color toners.