Patent ID: 7569318

Claim:
A process for controlling the charge of an electrophotographic toner comprising the step of adding at least one charge control agent to the electrophotographic toner, wherein the at least one charge control agent is a layered double hydroxide salt and wherein the double hydroxide salt is selected from the group consisting of calcined hydrotalcites, uncalcined hydrotalcites, and mixtures thereof having metal cations comprising divalent metal cations and trivalent metal cations, and organic anions A of the formulae (XIII) wherein R 18 , R 19 and R 20 are identical or different and are hydrogen, C 1 -C 22 -alkyl, C 1 -C 18 -alkenyl, C 1 -C 18 -alkoxy, wherein R is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy or halogen.