Fuser members overcoated with fluorocarbon elastomer containing zinc oxide and cupric oxide

A fuser member useful for heat-fixing an electrographic toner to a substrate, wherein the fuser member comprises a core, a base cushion layer overlying said core, and an outer layer superimposed on said base cushion, said outer layer comprising a cured fluorocarbon random copolymer comprising subunits having the general structures:

• --(CH.sub.2 CF.sub.2).sub.x --, --(CF.sub.2 CF.sub.2).sub.z --,
• and ##STR8## wherein x is from 10 to 90 mole percent,
• y is from 10 to 70 mole percent, and
• z is from 0 to 34 mole percent;
• said outer layer further comprising particulate filler, said particulate filler comprising zinc oxide and cupric oxide and a material selected from the group consisting of alkaline earth metal oxides, alkaline earth metal hydroxides, and combinations thereof;
• said particulate filler having a total concentration in said outer layer of 12 to 75 volume percent of the total volume of said outer layer, said zinc oxide and tin oxide having a concentration of 10 to 70 volume percent of the total volume of said outer layer.

A fuser member useful for heat-fixing an electrographic toner to a substrate, said fuser member comprising:

• a core, a base cushion superimposed on said core and an outer layer superimposed on said base cushion, said outer layer comprising a bisphenol cured fluorocarbon random copolymer comprising subunits having the general structures:
• ##STR9## wherein x, y, and z are selected such that fluorine atoms represent at least 70 percent of the total formula weight of said subunits;
• said outer layer having filler particles dispersed therein, said filler particles further comprising:
• particles selected from the group consisting of alkaline earth metal oxides, alkaline earth metal hydroxides, and combinations thereof in a concentration of from about 2 to 6 volume percent of the total volume of said outer layer;
• and
• zinc oxide and cupric oxide particles in a concentration of from 12 to 70 volume percent of the total volume of said outer layer.