Patent ID: 8492064
Filing Date: 2013-07-23
Classification: G03G

Abstract:
1. A process comprising: (a) contacting a plurality of ferromagnetic particles with at least one encapsulating resin selected from the group consisting of amorphous resins, crystalline resins, and combinations thereof to form a plurality of encapsulated ferromagnetic particles; (b) contacting at least one amorphous resin with an optional crystalline resin and the plurality of encapsulated ferromagnetic particles to form a mixture; (c) aggregating the mixture at a pH from about 7 to about 9 under an inert gas to form particles; (d) adjusting the pH of the mixture to from about 7 to about 12 to stop growth of the particles; (e) coalescing the particles at a pH from about 8 to about 12 under an inert gas to form magnetic ink character recognition toner particles; and (f) recovering the magnetic ink character recognition toner particles.