Patent ID: 7534376
Filing Date: 2009-05-19
Classification: H01B,Y10T

Abstract:
1. 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 diphosphonium bis(sulfoarylcarbonyloxy)glycol salt represented by the formula: where R comprises or an ester containing a divalent glycol radical; where m is 0 or 1; R R Ar comprises a divalent substituted or unsubstituted aryl group.