Toner composite is an important element in laser printing and copying processes which is included magnetite, carbon black and binder. The emulsion aggregation is a popular method for toner preparation that allows tight control on toner properties. This study was done to determine the effects of the basic ingredients (magnetite, carbon black, and styrene-acrylic copolymer) that affect the properties of toner composites. Particle size analysis (PSA), scanning electron microscopy (SEM), and field emission scanning electron microscopy (FE-SEM) were used to study particle size, shape, and morphology of the toner composites. It was found that using carbon black, magnetite and styrene-acrylic copolymer with small particle size produced toner composite with small particle size. It was also shown that using a styrene-acrylic copolymer with high viscosity resulted in smaller and narrower particle distribution in the resultant toner. The results determined by SEM confirmed that carbon black, magnetite and styrene-acrylic copolymer particle size did not affect the toner’s shape, and that it remained spherical.