Patent ID: 6541175
Filing Date: 2003-04-01
Classification: C08J,G03G

Abstract:
A process comprising:(i) providing or generating an emulsion latex comprised of sodio sulfonated polyester resin particles by heating said particles in water at a temperature of from about 65Â° C. to about 90Â° C.; (ii) adding with shearing to said latex (i) a colorant dispersion comprising from about 20 percent to about 50 percent of a predispersed colorant in water, followed by the addition of an organic or an inorganic acid; (iii) heating the resulting mixture at a temperature of from about 45Â° C. to about 65Â° C. followed by the addition of a water insoluble metal salt or a water insoluble metal oxide thereby releasing metal ions and permitting aggregation and coalescence, optionally resulting in toner particles of from about 2 to about 25 microns in volume average diameter; and optionally (iv) cooling the mixture and isolating the product.