Patent ID: 7641819

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 formed from the transesterification of dialkyl phosphonium 5-sulfoisophthalate salts with poly(alkylene glycols) represented by the formula: where R comprises substituted or unsubstituted alkylene, R 1 , R 2 , R 3 and R 4 comprise substituted or unsubstituted alkyl or aryl groups which may be the same or different, R 5 comprises alkyl or where R is defined above and with the proviso that when m =0, at least one R 5 comprises m is an integer with a value of 0-10; and n is an integer with a value from 1 to 1,000.