METHOD OF PREPARING TONER

摘要

Provided is a method of preparing a toner, the method including: preparing a solvent emulsion by stirring a medium including a polar medium, an organic solvent, and a surfactant; adding toner components including a resin and a pigment to the solvent emulsion; removing the organic solvent from the solvent emulsion including the toner components; and collecting a toner particle from the solvent emulsion from which the organic solvent is removed. Unlike a conventional method of preparing a toner, wherein toner components are first dissolved in an organic solvent and then dispersed in an aqueous phase, the method prepares toner particles by forming a solvent emulsion and then adding toner components in the solvent emulsion and dissolving the toner components in the organic solvent dispersed in the solvent emulsion. By controlling an order of adding the toner components, it is easy to control a structure of the toner. Accordingly, a toner having a small volume average particle size, a narrow particle size distribution, an improved fixing property, and an improved storage stability at a high temperature is prepared. Also, it is easy to adjust toner surface charges by selectively using the pigment in a form of a master batch and encapsulating the pigment.