Toner compositions with dispersed wax
AssigneeXerox Corporation
InventorJacques C. Bertrand
Life of this patent
Estimating the term…
Abstract
A process for minimizing the amount of wax that escapes from a toner which comprises melt mixing toner resin and pigment, and injecting a water emulsified wax composition therein, and wherein the generated wax domain size range is from about 50 to about 1,500 nanometers.
Claims21
A process for minimizing the amount of wax that escapes from a toner which consists essentially of melt mixing toner resin and pigment, and injecting a water emulsified wax composition therein, and wherein the generated wax domain size range is from about 50 to about 1,500 nanometers, and wherein said water emulsified wax is directly injected into said toner resin and pigment mixture subsequent to the injection of said resin and said pigment.
A process for the preparation of a toner composition consisting essentially of the generation of said toner by melt extrusion of toner resin, colorant, and charge additive;
- feeding the resulting components into a toner extruder;
- injecting into the resin, pigment and charge additive melt stream via liquid injection an emulsified wax/water/stabilizer solution subsequent to the melting of the resin, pigment and charge additive components;
- and removing water by vacuum extraction during the extrusion.
Dependencies are inferred from the claim text.