Patent ID: 7666329

Claim:
A member for electrically cooperating with a conductive support surface to attract charged toner particles from the support surface towards the member which comprises a conductive substrate for supporting a uniform potential thereon and at least one layer which comprises a polymeric material having incorporated therein in an amount sufficient to provide the polymeric material with a resistivity of from about 10 6 to about 5.0×10 11 ohm cm a conductivity control agent from 0.001 to 5.000 weight percent, based on the total weight of the polymeric material, the conductivity control agent comprising a hydroxyalkyiphosphonium (2-hydoxyethoxycarbonyl) arylsulfonate salt represented by the formula: where Ar comprises a divalent substituted or unsubstituted aryl group; R 1 , R 2 and R 3 comprise substituted or unsubstituted alkyl or aryl groups which may be the same or different; R 4 comprises a substituted or unsubstituted divalent alkylene moiety; R 5 and R 6 comprise hydrogen or substituted or unsubstituted alkyl or aryl which may be the same or different.