US Patent 7754408 - CNT developer for laser printers

http://www.freepatentsonline.com/7754408.html

This patent from Xerox teaches using carbon nanotubes to enhance the conductivity and extend the lifetime of the developer used in laser printers. Claim 1 reads:

1. A carrier including carrier particles comprising

a binder,

at least one magnetic material and

at least one conductive material,

wherein the conductive material is substantially uniformly dispersed within the carrier particles and the conductive material includes at least one carbon nanotube.