Patent ID: 7491435

Claim:
A fuser member comprising a substrate; an outer layer comprising a fluoroelastomer selected from the group consisting of a) copolymers of two of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene; b) terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene; and c) tetrapolymers of vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer; and a release agent material coating on the outer layer, wherein the release agent material coating comprises a perfluorinated polyether having a skeleton selected from the group consisting of Formulas I and II, and mixtures thereof: CF 3 —(CF 2 CF 2 ) m —O—(R 1 R 2 O)—(R 3 R 3 O) n —(R 3 O) p —(CF 2 ) q —CF 3 Formula I wherein R 1 is selected from the group consisting of CF 2 , CF—CF 3 and —NR 4 R 5 ; R 2 is selected from the group consisting of CF 2 , CF—CF 3 , and —NR 4 R 5 ; R 3 is selected from the group consisting of CF 2 and CF 3 ; R 4 is selected from the group consisting of hydrogen, alkyl group having from about 1 to about 18 carbon atoms, arylalkyl group having from about 7 to about 18 carbon atoms, mercapto, hydride and carbinol functional group; R 5 is selected from the group consisting of alkyl having from about 1 to about 20 carbons, and a fluoroalkyl having from about 2 to about 10 carbons; m is a number of 0 or 1; n is a number of from about 0 to about 500; p is a number of from about 0 to about 100; q is a number of 0 or 1, and p+n is from about 250 to about 425; and R 1 —(CF 2 CF 2 ) m —O—(R 2 R 2 O) n —(R 2 O) p —(CF 2 ) q —CF 2 —R 1 Formula II wherein R 1 is CF 3 ; R 2 is selected from the group consisting of CF 2 and CF—CF 3 ; m is a number of 0 or 1; n is a number of from about 0 to about 500; p is a number of from about 0 to about 100; q is a number of 0 or 1, and p+n is from about 250 to about 425.