| US 7,572,567 B2 | ||
| Processes for aggregating toner components | ||
| Joo T. Chung, Webster, N.Y. (US); Zhen Lai, Webster, N.Y. (US); Joseph Leonardo, Penfield, N.Y. (US); Derrick Black, Rochester, N.Y. (US); and Robert Heim, Webster, N.Y. (US) | ||
| Assigned to Xerox Corporation, Norwalk, Conn. (US) | ||
| Filed on Nov. 21, 2006, as Appl. No. 11/602,750. | ||
| Prior Publication US 2008/0138739 A1, Jun. 12, 2008 | ||
| Int. Cl. G03G 9/087 (2006.01) | ||
| U.S. Cl. 430—137.14 | 22 Claims |
| 1. A continuous toner aggregation process, comprising:
continuously feeding a mixture of chemical toner components of nanometer size into a feed section of a screw extruder at a
controlled rate;
continuously dispersing the mixture at a controlled rate;
continuously feeding an aggregation agent into the screw extruder downstream from the feed section at a controlled rate while
continuously dispersing the mixture with the aggregation agent to accelerate aggregation of the mixture;
aggregating the mixture;
continuously emulsifying and homogenizing the aggregated mixture; and
collecting the aggregated mixture from an exit section of the extruder.
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