Chemically Prepared Energy Efficient Toner Formulation and Method to Make the Same

摘要

The present invention relates generally to chemically prepared toner and method of making the toner for use in electrophotography and more particularly to chemically prepared toner that can simultaneously fix at an energy saving low temperature and also be resistant to hot offset. The chemically prepared toner includes a mixture of a low molecular weight styrene acrylic resin and a low melting polyester resin. The amount of the low melt polyester resin must not exceed 40% by weight of the energy efficient toner of the present invention.

主权项

1. A method of forming a chemically processed toner by aggregation in an aqueous medium, the method comprising:
forming a toner resin composition comprising a styrene acrylic emulsion and a polyester emulsion, the styrene acrylic emulsion being at least 60 percent by weight of the toner resin composition; and combining the toner resin composition with a pigment, fuser release agent and a surfactant to form the chemically processed toner having a particle size of about 3 to 9 microns and an average degree of circularity of about 0.95 or greater.