Polymer coated toner pigments for electrophotographic printing

摘要

Toner compositions for electrophotographic printing are disclosed, along with methods for making such toners, and printing systems utilizing them. The disclosed process imparts qualities to the toner making it more efficiently and effectively incorporated into printed images.

主权项

1. A method of making a toner for use in electrophotographic printing, comprising:
(a) dispersing pigment particles, acrylic monomer, acidic monomer, an initiator, and optionally a charge control agent together in a first solvent so as to create a dispersion; (b) activating the initiator; and (c) conducting polymerization of the acrylic monomer and the acidic monomer to form a polymer, where the polymer precipitates out of solution to create a polymer coating on the pigment particles, wherein each pigment particle is at least substantially covered by the polymer coating, the polymer coating is non-crosslinked and has a Tg of from about 20° C. to about 160° C., and each pigment particle is uniformly chargeable over its entire surface.