Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2008-05-20
2008-05-20
Kiliman, Leszek B (Department: 1794)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C428S402000, C428S403000, C264S005000, C264S008000, C264S012000, C264S013000, C425S006000, C425S008000, C425S174400, C425S17480E
Reexamination Certificate
active
07374797
ABSTRACT:
A system and method for the continuous fabrication of bichromal spheres by introducing continuous streams of differently colored, pigmented polymer melts to substantially opposite sides of a plurality of spinning disks. The system comprises a first and second extruder which melts a raw polymer material and mixes the melted polymer with a pigment and optionally a charge control agent. The first and second extruders are connected to substantially opposite sides of a plurality of spinning disks with optionally interconnected gear pumps and mixing devices. The instant system and method is useful in fabricating large quantities of bichromal spheres in a continuous manner with a higher degree of uniformity in their physical characteristics.
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Kiliman Leszek B
Pillsbury Winthrop Shaw Pittmam LLP
Xerox Corporation
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